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Yang M, Chen S, Lim SL, Yang L, Zhong JY, Chan KC, Zhao Z, Wong KB, Wang J, Lim BL. A converged ubiquitin-proteasome pathway for the degradation of TOC and TOM tail-anchored receptors. J Integr Plant Biol 2024. [PMID: 38501483 DOI: 10.1111/jipb.13645] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/06/2023] [Accepted: 02/27/2024] [Indexed: 03/20/2024]
Abstract
In plants, thousands of nucleus-encoded proteins translated in the cytosol are sorted to chloroplasts and mitochondria by binding to specific receptors of the TOC (translocon on the outer chloroplast membrane) and the TOM (translocon on the outer mitochondrial membrane) complexes for import into those organelles. The degradation pathways for these receptors are unclear. Here, we discovered a converged ubiquitin-proteasome pathway for the degradation of Arabidopsis thaliana TOC and TOM tail-anchored receptors. The receptors are ubiquitinated by E3 ligase(s) and pulled from the outer membranes by the AAA+ adenosine triphosphatase CDC48, after which a previously uncharacterized cytosolic protein, transmembrane domain (TMD)-binding protein for tail-anchored outer membrane proteins (TTOP), binds to the exposed TMDs at the C termini of the receptors and CDC48, and delivers these complexes to the 26S proteasome.
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Affiliation(s)
- Meijing Yang
- School of Biological Sciences, University of Hong Kong, Pokfulam, 999077, Hong Kong, China
- Department of Biology, Southern University of Science and Technology, Shenzhen, 518055, China
| | - Shuai Chen
- School of Biomedical Engineering, Shenzhen University, Shenzhen, 518060, China
- School of Life Sciences, The Chinese University of Hong Kong, Shatin, 999077, Hong Kong, China
| | - Shey-Li Lim
- School of Biological Sciences, University of Hong Kong, Pokfulam, 999077, Hong Kong, China
| | - Lang Yang
- School of Biological Sciences, University of Hong Kong, Pokfulam, 999077, Hong Kong, China
- Department of Biology, Southern University of Science and Technology, Shenzhen, 518055, China
| | - Jia Yi Zhong
- School of Biological Sciences, University of Hong Kong, Pokfulam, 999077, Hong Kong, China
| | - Koon Chuen Chan
- School of Biological Sciences, University of Hong Kong, Pokfulam, 999077, Hong Kong, China
| | - Zhizhu Zhao
- School of Biological Sciences, University of Hong Kong, Pokfulam, 999077, Hong Kong, China
| | - Kam-Bo Wong
- School of Life Sciences, The Chinese University of Hong Kong, Shatin, 999077, Hong Kong, China
- State Key Laboratory of Agrobiotechnology, The Chinese University of Hong Kong, Shatin, 999077, Hong Kong, China
| | - Junqi Wang
- Department of Biology, Southern University of Science and Technology, Shenzhen, 518055, China
| | - Boon Leong Lim
- School of Biological Sciences, University of Hong Kong, Pokfulam, 999077, Hong Kong, China
- State Key Laboratory of Agrobiotechnology, The Chinese University of Hong Kong, Shatin, 999077, Hong Kong, China
- HKU Shenzhen Institute of Research and Innovation, Shenzhen, 518052, China
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Dulloo I, Tellier M, Levet C, Chikh A, Zhang B, Blaydon DC, Webb CM, Kelsell DP, Freeman M. Cleavage of the pseudoprotease iRhom2 by the signal peptidase complex reveals an ER-to-nucleus signaling pathway. Mol Cell 2024; 84:277-292.e9. [PMID: 38183983 DOI: 10.1016/j.molcel.2023.12.012] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2022] [Revised: 09/18/2023] [Accepted: 12/08/2023] [Indexed: 01/08/2024]
Abstract
iRhoms are pseudoprotease members of the rhomboid-like superfamily and are cardinal regulators of inflammatory and growth factor signaling; they function primarily by recognizing transmembrane domains of their clients. Here, we report a mechanistically distinct nuclear function of iRhoms, showing that both human and mouse iRhom2 are non-canonical substrates of signal peptidase complex (SPC), the protease that removes signal peptides from secreted proteins. Cleavage of iRhom2 generates an N-terminal fragment that enters the nucleus and modifies the transcriptome, in part by binding C-terminal binding proteins (CtBPs). The biological significance of nuclear iRhom2 is indicated by elevated levels in skin biopsies of patients with psoriasis, tylosis with oesophageal cancer (TOC), and non-epidermolytic palmoplantar keratoderma (NEPPK); increased iRhom2 cleavage in a keratinocyte model of psoriasis; and nuclear iRhom2 promoting proliferation of keratinocytes. Overall, this work identifies an unexpected SPC-dependent ER-to-nucleus signaling pathway and demonstrates that iRhoms can mediate nuclear signaling.
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Affiliation(s)
- Iqbal Dulloo
- Dunn School of Pathology, University of Oxford, South Parks Road, Oxford OX1 3RE, UK.
| | - Michael Tellier
- Dunn School of Pathology, University of Oxford, South Parks Road, Oxford OX1 3RE, UK
| | - Clémence Levet
- Dunn School of Pathology, University of Oxford, South Parks Road, Oxford OX1 3RE, UK
| | - Anissa Chikh
- Blizard Institute, Faculty of Medicine and Dentistry, Queen Mary University of London, Newark Street, London E1 2AT, UK
| | - Boyan Zhang
- Dunn School of Pathology, University of Oxford, South Parks Road, Oxford OX1 3RE, UK
| | - Diana C Blaydon
- Blizard Institute, Faculty of Medicine and Dentistry, Queen Mary University of London, Newark Street, London E1 2AT, UK
| | - Catherine M Webb
- Blizard Institute, Faculty of Medicine and Dentistry, Queen Mary University of London, Newark Street, London E1 2AT, UK
| | - David P Kelsell
- Blizard Institute, Faculty of Medicine and Dentistry, Queen Mary University of London, Newark Street, London E1 2AT, UK
| | - Matthew Freeman
- Dunn School of Pathology, University of Oxford, South Parks Road, Oxford OX1 3RE, UK.
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3
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Kang J, Choi J, Lee D, Son Y. UV/persulfate processes for the removal of total organic carbon from coagulation-treated industrial wastewaters. Chemosphere 2024; 346:140609. [PMID: 37926165 DOI: 10.1016/j.chemosphere.2023.140609] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/19/2023] [Revised: 10/24/2023] [Accepted: 11/01/2023] [Indexed: 11/07/2023]
Abstract
Sulfate radical-based oxidation processes were investigated to understand the relationship between persulfate (PS) consumption and total organic carbon (TOC) removal from industrial wastewater under various PS concentrations. First, the degradation and mineralization of Bisphenol A (BPA) (initial concentration: 11 mg/L) were investigated in ultraviolet (UV)/PS systems. Complete degradation was achieved within 30 min of UV irradiation, and 41%-72% TOC removal was achieved at PS concentrations of 200 and 400 mg/L. The consumed concentration of S2O82- and generated concentration of SO42- increased gradually to similar levels. The ratio of the PS consumption to TOC removal based on the mass concentration (mg/L) was 14.5 and 23.2 at 180 min for 200 and 400 mg/L of S2O82-, respectively. Three types of coagulation-treated industrial wastewater from metal-processing, food-processing, and adhesive-producing plants were obtained, and TOC removal was analyzed using the same UV/PS systems (initial TOC concentration: 100 mg/L). The TOC removal rates ranged from 16.9% to 94.4% after 180 min of UV irradiation at PS concentrations of 1,000, 2,000, 4,000, and 8,000 mg S2O82-/L. Despite the higher TOC removal at higher PS concentrations, the PS activation efficiency decreased significantly as the PS concentration increased. Only approximately 30%-40% activation efficiency was achieved at a PS concentration of 8,000 mg/L. In this study, the ratio of PS consumption to TOC removal ranged from 20.6 to 43.9.
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Affiliation(s)
- Jumin Kang
- Department of Environmental Engineering, Kumoh National Institute of Technology, Gumi, 39177, Republic of Korea; Department of Energy Engineering Convergence, Kumoh National Institute of Technology, Gumi, 39177, Republic of Korea
| | - Jongbok Choi
- Department of Environmental Engineering, Kumoh National Institute of Technology, Gumi, 39177, Republic of Korea
| | - Dukyoung Lee
- Department of Environmental Engineering, Kumoh National Institute of Technology, Gumi, 39177, Republic of Korea
| | - Younggyu Son
- Department of Environmental Engineering, Kumoh National Institute of Technology, Gumi, 39177, Republic of Korea; Department of Energy Engineering Convergence, Kumoh National Institute of Technology, Gumi, 39177, Republic of Korea.
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Sarinho L, Carvalho P, Patoilo D, Ribeiro JP, Baião da Cruz J, Gaião J, Marques C, Nunes MI. Treatment of salt from hides curing stage by electrocoagulation for use in the pickling stage of the tanning industry. Environ Res 2023; 237:117095. [PMID: 37683784 DOI: 10.1016/j.envres.2023.117095] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/02/2023] [Revised: 09/04/2023] [Accepted: 09/05/2023] [Indexed: 09/10/2023]
Abstract
The raw materials for the tanning industry, namely hides and skins, are preserved (curing stage) and carried with common salt, i.e., sodium chloride (NaCl). Proceeding to conversion into leather, pickling is a key stage of the tannery process, which entails high demand of water and salt. In this work, the salt-derived brine (SdB) generated from the curing of hides was treated by iron-driven electrocoagulation (EC), aiming at its later application in the pickling stage of the tanning industry, promoting a transition to zero waste emission policy. Focusing on reducing the brine's total organic carbon (TOC), central composite rotational design and response surface methodology were adopted to study the effect of electrolysis time (6.2-14.2 min) and current density (74-431 A·m-2) on the treatment of the SdB (≅ 7.5 % wt. NaCl). The quality of the treated brines was then assessed in pickling trials and compared with virgin brine. 68-83 % removal of TOC from the SdB were achieved under electrolysis time ranging 6.2-14.2 min and current density ranging 126-252 A·m-2. Under these operating ranges the quality of the wet-blue leathers was guaranteed. Lowest power consumption (0.44 kWh·m-3) was achieved under electrolysis time of 6 min and current density of 126 A·m-2, yielding 68 % removal of TOC. Moreover, the shrinkage temperature of the hides was improved with treated brine (103.5 °C-110.5 °C) compared to virgin brine (103.0 °C). The present study provides strong evidence that contaminated salt from the curing stage can be valorised within the tanning industry through electrocoagulation treatment and then used in another production stage, instead of being landfilled.
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Affiliation(s)
- Luana Sarinho
- CESAM - Centre for Environmental and Marine Studies, Department of Environment and Planning, University of Aveiro, 3810-193, Aveiro, Portugal; CICECO - Aveiro Institute of Materials, Department of Chemistry, University of Aveiro, 3810-193, Aveiro, Portugal; DAO - Department of Environment and Planning, University of Aveiro, 3810-193, Aveiro, Portugal
| | - Pedro Carvalho
- CICECO - Aveiro Institute of Materials, Department of Chemistry, University of Aveiro, 3810-193, Aveiro, Portugal
| | - Diana Patoilo
- DAO - Department of Environment and Planning, University of Aveiro, 3810-193, Aveiro, Portugal
| | - João Peres Ribeiro
- CESAM - Centre for Environmental and Marine Studies, Department of Environment and Planning, University of Aveiro, 3810-193, Aveiro, Portugal; DAO - Department of Environment and Planning, University of Aveiro, 3810-193, Aveiro, Portugal
| | - José Baião da Cruz
- CTIC - Centro Tecnológico das Indústrias do Couro, Apartado 158, São Pedro, 2384-909, Alcanena, Portugal
| | - Joaquim Gaião
- CTIC - Centro Tecnológico das Indústrias do Couro, Apartado 158, São Pedro, 2384-909, Alcanena, Portugal
| | - Catarina Marques
- CESAM - Centre for Environmental and Marine Studies, Department of Environment and Planning, University of Aveiro, 3810-193, Aveiro, Portugal; DAO - Department of Environment and Planning, University of Aveiro, 3810-193, Aveiro, Portugal
| | - Maria Isabel Nunes
- CESAM - Centre for Environmental and Marine Studies, Department of Environment and Planning, University of Aveiro, 3810-193, Aveiro, Portugal; DAO - Department of Environment and Planning, University of Aveiro, 3810-193, Aveiro, Portugal.
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Pretze M, Michler E, Runge R, Wetzig K, Tietze K, Brandt F, Schultz MK, Kotzerke J. Influence of the Molar Activity of 203/212Pb-PSC-PEG 2- TOC on Somatostatin Receptor Type 2-Binding and Cell Uptake. Pharmaceuticals (Basel) 2023; 16:1605. [PMID: 38004470 PMCID: PMC10675797 DOI: 10.3390/ph16111605] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2023] [Revised: 11/06/2023] [Accepted: 11/10/2023] [Indexed: 11/26/2023] Open
Abstract
(1) Background: In neuroendocrine tumors (NETs), somatostatin receptor subtype 2 is highly expressed, which can be targeted by a radioactive ligand such as [177Lu]Lu-1,4,7,10-tetraazacyclododecane-N,N',N″,N‴,-tetraacetic acid-[Tyr3,Thr8]-octreotide (177Lu-DOTA-TOC) and, more recently, by a lead specific chelator (PSC) containing 203/212Pb-PSC-PEG2-TOC (PSC-TOC). The molar activity (AM) can play a crucial role in tumor uptake, especially in receptor-mediated uptake, such as in NETs. Therefore, an investigation of the influence of different molar activities of 203/212Pb-PSC-TOC on cell uptake was investigated. (2) Methods: Optimized radiolabeling of 203/212Pb-PSC-TOC was performed with 50 µg of precursor in a NaAc/AcOH buffer at pH 5.3-5.5 within 15-45 min at 95° C. Cell uptake was studied in AR42 J, HEK293 sst2, and ZR75-1 cells. (3) Results: 203/212Pb-PSC-TOC was radiolabeled with high radiochemical purity >95% and high radiochemical yield >95%, with AM ranging from 0.2 to 61.6 MBq/nmol. The cell uptake of 203Pb-PSC-TOC (AM = 38 MBq/nmol) was highest in AR42 J (17.9%), moderate in HEK293 sstr (9.1%) and lowest in ZR75-1 (0.6%). Cell uptake increased with the level of AM. (4) Conclusions: A moderate AM of 15-40 MBq/nmol showed the highest cell uptake. No uptake limitation was found in the first 24-48 h. Further escalation experiments with even higher AM should be performed in the future. It was shown that AM plays an important role because of its direct dependence on the cellular uptake levels, possibly due to less receptor saturation with non-radioactive ligands at higher AM.
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Affiliation(s)
- Marc Pretze
- Department of Nuclear Medicine, University Hospital Carl Gustav Carus, Technical University Dresden, Fetscherstr. 74, 01307 Dresden, Germany; (E.M.); (R.R.); (K.W.); (K.T.); (F.B.); (J.K.)
| | - Enrico Michler
- Department of Nuclear Medicine, University Hospital Carl Gustav Carus, Technical University Dresden, Fetscherstr. 74, 01307 Dresden, Germany; (E.M.); (R.R.); (K.W.); (K.T.); (F.B.); (J.K.)
| | - Roswitha Runge
- Department of Nuclear Medicine, University Hospital Carl Gustav Carus, Technical University Dresden, Fetscherstr. 74, 01307 Dresden, Germany; (E.M.); (R.R.); (K.W.); (K.T.); (F.B.); (J.K.)
| | - Kerstin Wetzig
- Department of Nuclear Medicine, University Hospital Carl Gustav Carus, Technical University Dresden, Fetscherstr. 74, 01307 Dresden, Germany; (E.M.); (R.R.); (K.W.); (K.T.); (F.B.); (J.K.)
| | - Katja Tietze
- Department of Nuclear Medicine, University Hospital Carl Gustav Carus, Technical University Dresden, Fetscherstr. 74, 01307 Dresden, Germany; (E.M.); (R.R.); (K.W.); (K.T.); (F.B.); (J.K.)
| | - Florian Brandt
- Department of Nuclear Medicine, University Hospital Carl Gustav Carus, Technical University Dresden, Fetscherstr. 74, 01307 Dresden, Germany; (E.M.); (R.R.); (K.W.); (K.T.); (F.B.); (J.K.)
| | - Michael K. Schultz
- Department of Radiology, University of Iowa, Iowa City, IA 52240, USA;
- Viewpoint Molecular Targeting, Inc. (DBA Perspective Therapeutics), Coralville, IA 52241, USA
- Department of Chemistry, University of Iowa, Iowa City, IA 52241, USA
- Department of Radiation Oncology, University of Iowa, Iowa City, IA 52242, USA
| | - Jörg Kotzerke
- Department of Nuclear Medicine, University Hospital Carl Gustav Carus, Technical University Dresden, Fetscherstr. 74, 01307 Dresden, Germany; (E.M.); (R.R.); (K.W.); (K.T.); (F.B.); (J.K.)
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6
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Shao K, Qin B, Chao J, Gao G. Sediment Bacteria in the Alpine Lake Sayram: Vertical Patterns in Community Composition. Microorganisms 2023; 11:2669. [PMID: 38004681 PMCID: PMC10673033 DOI: 10.3390/microorganisms11112669] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2023] [Revised: 10/16/2023] [Accepted: 10/17/2023] [Indexed: 11/26/2023] Open
Abstract
Bacterial communities inhabiting alpine lakes are essential to our understanding of ecosystem processes in a changing climate, but little has been reported about the vertical patterns of sediment bacterial communities in alpine lakes. To address this knowledge gap, we collected the 100 cm long sediment core from the center of Lake Sayram, the largest alpine lake in Xinjiang Uygur autonomous area, China, and used 16S rRNA gene-targeted amplicon sequencing to examine the bacterial populations. The results showed that bacterial diversity, as estimated by the Shannon index, was highest at the surface (6.9849 at 0-4 cm) and gradually decreased with depth up to 3.9983 at 68-72 cm, and then increased to 5.0927 at 96-100 cm. A total of 56 different phyla and 1204 distinct genera were observed in the sediment core of Lake Sayram. The bacterial community structure in the sediment samples from the various layers was dissimilar. The most abundant phyla in alpine Lake Sayram were Proteobacteria, Firmicutes, and Planctomycetes, accounting for 73%, 6%, and 4% of the total reads, respectively; the most abundant genera were Acinetobacter, Hydrogenophaga, and Pseudomonas, accounting for 18%, 12%, and 8% of the total reads, respectively. Furthermore, the relative abundance of Acinetobacter increased with sediment depth, while the relative abundance of Hydrogenophaga and Pseudomonas decreased with sediment depth. Our findings indicated that the nitrate-reducing bacteria (Acinetobacter, Hydrogenophaga, and Pseudomonas) may be prevalent in the sediment core of Lake Sayram. Canonical correspondence analysis showed that carbonate and total organic carbon (TOC) may be the main environmental factors affecting the vertical patterns of bacterial community composition (BCC) in the sediment of Lake Sayram. This work significantly contributes to our understanding of the BCC of sediments from alpine lakes in arid and semiarid regions.
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Affiliation(s)
- Keqiang Shao
- State Key Laboratory of Lake Science and Environment, Nanjing Institute of Geography and Limnology, Chinese Academy of Sciences, Nanjing 210008, China; (K.S.); (B.Q.)
| | - Boqiang Qin
- State Key Laboratory of Lake Science and Environment, Nanjing Institute of Geography and Limnology, Chinese Academy of Sciences, Nanjing 210008, China; (K.S.); (B.Q.)
| | - Jianying Chao
- Ministry of Environmental Protection, Nanjing Institute of Environmental Sciences, Nanjing 210042, China
| | - Guang Gao
- State Key Laboratory of Lake Science and Environment, Nanjing Institute of Geography and Limnology, Chinese Academy of Sciences, Nanjing 210008, China; (K.S.); (B.Q.)
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Chen J, Yu R, Li N, Deng Z, Zhang X, Zhao Y, Qu C, Yuan Y, Pan Z, Zhou Y, Li K, Wang J, Chen Z, Wang X, Wang X, He SN, Dong J, Deng XW, Chen H. Amyloplast sedimentation repolarizes LAZYs to achieve gravity sensing in plants. Cell 2023; 186:4788-4802.e15. [PMID: 37741279 PMCID: PMC10615846 DOI: 10.1016/j.cell.2023.09.014] [Citation(s) in RCA: 11] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2023] [Revised: 08/04/2023] [Accepted: 09/14/2023] [Indexed: 09/25/2023]
Abstract
Gravity controls directional growth of plants, and the classical starch-statolith hypothesis proposed more than a century ago postulates that amyloplast sedimentation in specialized cells initiates gravity sensing, but the molecular mechanism remains uncharacterized. The LAZY proteins are known as key regulators of gravitropism, and lazy mutants show striking gravitropic defects. Here, we report that gravistimulation by reorientation triggers mitogen-activated protein kinase (MAPK) signaling-mediated phosphorylation of Arabidopsis LAZY proteins basally polarized in root columella cells. Phosphorylation of LAZY increases its interaction with several translocons at the outer envelope membrane of chloroplasts (TOC) proteins on the surface of amyloplasts, facilitating enrichment of LAZY proteins on amyloplasts. Amyloplast sedimentation subsequently guides LAZY to relocate to the new lower side of the plasma membrane in columella cells, where LAZY induces asymmetrical auxin distribution and root differential growth. Together, this study provides a molecular interpretation for the starch-statolith hypothesis: the organelle-movement-triggered molecular polarity formation.
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Affiliation(s)
- Jiayue Chen
- Center for Plant Biology, School of Life Sciences, Tsinghua University, Beijing 100084, China; State Key Laboratory of Protein and Plant Gene Research, School of Advanced Agricultural Sciences and School of Life Sciences, Peking-Tsinghua Center for Life Sciences, Peking University, Beijing 100871, China; Tsinghua-Peking Center for Life Sciences, Beijing 100084, China
| | - Renbo Yu
- State Key Laboratory of Protein and Plant Gene Research, School of Advanced Agricultural Sciences and School of Life Sciences, Peking-Tsinghua Center for Life Sciences, Peking University, Beijing 100871, China; Key Laboratory of Vegetable Research Center, Tropical Crops Genetic Resources Institute, Chinese Academy of Tropical Agricultural Sciences, Haikou 571101, China
| | - Na Li
- Center for Plant Biology, School of Life Sciences, Tsinghua University, Beijing 100084, China; Tsinghua-Peking Center for Life Sciences, Beijing 100084, China
| | - Zhaoguo Deng
- Center for Plant Biology, School of Life Sciences, Tsinghua University, Beijing 100084, China; Tsinghua-Peking Center for Life Sciences, Beijing 100084, China
| | - Xinxin Zhang
- State Key Laboratory of Protein and Plant Gene Research, School of Advanced Agricultural Sciences and School of Life Sciences, Peking-Tsinghua Center for Life Sciences, Peking University, Beijing 100871, China
| | - Yaran Zhao
- Center for Plant Biology, School of Life Sciences, Tsinghua University, Beijing 100084, China; State Key Laboratory of Protein and Plant Gene Research, School of Advanced Agricultural Sciences and School of Life Sciences, Peking-Tsinghua Center for Life Sciences, Peking University, Beijing 100871, China; Tsinghua-Peking Center for Life Sciences, Beijing 100084, China
| | - Chengfu Qu
- Center for Plant Biology, School of Life Sciences, Tsinghua University, Beijing 100084, China; Tsinghua-Peking Center for Life Sciences, Beijing 100084, China
| | - Yanfang Yuan
- State Key Laboratory of Protein and Plant Gene Research, School of Advanced Agricultural Sciences and School of Life Sciences, Peking-Tsinghua Center for Life Sciences, Peking University, Beijing 100871, China
| | - Zhexian Pan
- Center for Plant Biology, School of Life Sciences, Tsinghua University, Beijing 100084, China; Tsinghua-Peking Center for Life Sciences, Beijing 100084, China
| | - Yangyang Zhou
- State Key Laboratory of Protein and Plant Gene Research, School of Advanced Agricultural Sciences and School of Life Sciences, Peking-Tsinghua Center for Life Sciences, Peking University, Beijing 100871, China
| | - Kunlun Li
- State Key Laboratory of Protein and Plant Gene Research, School of Advanced Agricultural Sciences and School of Life Sciences, Peking-Tsinghua Center for Life Sciences, Peking University, Beijing 100871, China
| | - Jiajun Wang
- State Key Laboratory of Protein and Plant Gene Research, School of Advanced Agricultural Sciences and School of Life Sciences, Peking-Tsinghua Center for Life Sciences, Peking University, Beijing 100871, China
| | - Zhiren Chen
- Center for Plant Biology, School of Life Sciences, Tsinghua University, Beijing 100084, China; Tsinghua-Peking Center for Life Sciences, Beijing 100084, China
| | - Xiaoyi Wang
- State Key Laboratory of Protein and Plant Gene Research, School of Advanced Agricultural Sciences and School of Life Sciences, Peking-Tsinghua Center for Life Sciences, Peking University, Beijing 100871, China
| | - Xiaolian Wang
- Center for Plant Biology, School of Life Sciences, Tsinghua University, Beijing 100084, China; Tsinghua-Peking Center for Life Sciences, Beijing 100084, China
| | - Shu-Nan He
- Center for Plant Biology, School of Life Sciences, Tsinghua University, Beijing 100084, China; Tsinghua-Peking Center for Life Sciences, Beijing 100084, China
| | - Juan Dong
- The Waksman Institute of Microbiology, Rutgers, the State University of New Jersey, Piscataway, NJ 08854, USA; Department of Plant Biology, Rutgers, the State University of New Jersey, New Brunswick, NJ 08901, USA
| | - Xing Wang Deng
- State Key Laboratory of Protein and Plant Gene Research, School of Advanced Agricultural Sciences and School of Life Sciences, Peking-Tsinghua Center for Life Sciences, Peking University, Beijing 100871, China
| | - Haodong Chen
- Center for Plant Biology, School of Life Sciences, Tsinghua University, Beijing 100084, China; State Key Laboratory of Protein and Plant Gene Research, School of Advanced Agricultural Sciences and School of Life Sciences, Peking-Tsinghua Center for Life Sciences, Peking University, Beijing 100871, China; Tsinghua-Peking Center for Life Sciences, Beijing 100084, China.
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8
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Zhang H, Chen Y, Liu Y, Bowden JA, Tolaymat TM, Townsend TG, Solo-Gabriele HM. Relationships between per- and polyfluoroalkyl substances (PFAS) and physical-chemical parameters in aqueous landfill samples. Chemosphere 2023; 329:138541. [PMID: 36996915 PMCID: PMC10680781 DOI: 10.1016/j.chemosphere.2023.138541] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/17/2022] [Revised: 03/26/2023] [Accepted: 03/27/2023] [Indexed: 05/03/2023]
Abstract
Variable chemistries of liquids from landfills can potentially impact levels of per- and polyfluoroalkyl substances (PFAS). The objective of the current study was to evaluate relationships between physical-chemical properties (bulk measurements, oxygen demand components, and metals) and PFAS concentrations in different types of aqueous landfill samples. Aqueous landfill samples were collected from 39 landfill facilities in Florida, United States. These samples included leachates from landfills that receive different waste types, such as municipal solid waste incineration ash (MSWA), construction and demolition debris (C&D), and municipal solid waste (MSW). Additional aqueous landfill samples were sourced from treated landfill leachate, gas condensate, stormwater, and groundwater from within and near the landfill boundaries. Results showed significant correlations (p < 0.05) between ∑26PFAS and alkalinity (rs = 0.83), total organic carbon (TOC) (rs = 0.84), and ammonia (rs = 0.79) for all leachate types. Other physical-chemical parameters that were significantly correlated (rs > 0.60, p < 0.05) with PFAS included specific conductivity, chemical oxygen demand (COD), and to a lesser extent, total dissolved solids (TDS) and total solids (TS). For gas condensates, PFAS was significantly correlated with TOC. Stormwater and groundwater, within and near the landfill boundaries, had considerably lower levels of PFAS and had a minimal correlation between PFAS and physical-chemical parameters. Although PFAS concentrations and physical-chemical parameters and their correlations varied between different types of aqueous landfill samples, results suggest that physical-chemical properties can be useful indicators of relative PFAS concentrations within a leachate type. More research is needed to validate the mechanisms that relate physical-chemical parameters to PFAS concentrations in landfill leachates.
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Affiliation(s)
- Hekai Zhang
- Department of Civil, Architectural, and Environmental Engineering, College of Engineering, University of Miami, Coral Gables, Florida, 33146, United States
| | - Yutao Chen
- Department of Civil, Architectural, and Environmental Engineering, College of Engineering, University of Miami, Coral Gables, Florida, 33146, United States
| | - Yalan Liu
- Department of Environmental Engineering Sciences, College of Engineering, University of Florida, Gainesville, FL, 32611, United States
| | - John A Bowden
- Department of Environmental Engineering Sciences, College of Engineering, University of Florida, Gainesville, FL, 32611, United States; Center for Environmental and Human Toxicology & Department of Physiological Sciences, College of Veterinary Medicine, University of Florida, Gainesville, FL, 32611, United States
| | - Thabet M Tolaymat
- Center for Environmental Solutions and Emergency Response, Office of Research and Development, U.S. Environmental Protection Agency, Cincinnati, OH, 45268, United States
| | - Timothy G Townsend
- Department of Environmental Engineering Sciences, College of Engineering, University of Florida, Gainesville, FL, 32611, United States
| | - Helena M Solo-Gabriele
- Department of Civil, Architectural, and Environmental Engineering, College of Engineering, University of Miami, Coral Gables, Florida, 33146, United States.
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9
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Wellmitz J, Bandow N, Koschorreck J. Long-term trend data for PFAS in soils from German ecosystems, including TOP assay. Sci Total Environ 2023:164586. [PMID: 37271402 DOI: 10.1016/j.scitotenv.2023.164586] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/27/2023] [Revised: 05/22/2023] [Accepted: 05/29/2023] [Indexed: 06/06/2023]
Abstract
In this study, soil top layers from the German Environmental Specimen Bank (ESB) covering a period from 2002 to 2018 and 11 sampling sites representing four ecosystem types were analysed for 24 PFAS (11 PFCA, 7 PFSA, and 6 precursors), including the total oxidizable precursor (TOP) assay. Median ΣPFAS levels before and after TOP assay ranged from 0.31 to 19.7 μg/kg dry weight (dw) and 0.32 to 20.4 μg/kg dw, respectively. The most frequently measured PFAS above LOQ were PFOS and PFOA, which were present at concentrations above 0.1 μg/kg dw in each sample. Both accounted, on average, for half to two-thirds of the total identified PFAS load at most sites. The investigated samples from the near-natural and forestry ecosystem types each had significantly higher PFAS levels than those from the urban-industrial ecosystem type, while samples from the agricultural ecosystem type did not differ distinctly from the others. Increases of median ΣPFAS levels after TOP assay ranged up to slightly >20 %, indicating that precursor compounds do not play a major role in the substance spectrum of German ESB soil samples from different ecosystem types. Total organic carbon (TOC) content in analysed samples ranged from about 1 % in sandy soil to >40 % in litter layer and showed a strong positive correlation with PFAS concentrations. It is therefore highly recommended that TOC content is reported along with PFAS levels in soils. PFAS trend analysis for nine sampling sites before and after TOP assay showed that concentration levels at most sites have remained more or less stable for the sampled period of almost two decades. The constant PFAS levels in soil samples indicate that PFOS and PFOA regulations have not yet had a positive effect on the exposure situation in this environmental compartment.
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Affiliation(s)
- Jörg Wellmitz
- German Environment Agency, Colditzstr. 34, D-12099 Berlin, Germany.
| | - Nicole Bandow
- German Environment Agency, Colditzstr. 34, D-12099 Berlin, Germany
| | - Jan Koschorreck
- German Environment Agency, Colditzstr. 34, D-12099 Berlin, Germany
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10
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Tao F, Tan Y, Dai J, Lu C, Sha Y, Liu Y, Zhou X, Hasi Q, Shen Z, Ma Y. Occurrence of halogenated methanesulfonic acids in water and sediment from the Hangzhou Bay, China. Environ Res 2023; 224:115463. [PMID: 36791841 DOI: 10.1016/j.envres.2023.115463] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/09/2022] [Revised: 02/05/2023] [Accepted: 02/08/2023] [Indexed: 06/18/2023]
Abstract
Halogenated methanesulfonic acids (HMSAs) are an important new class of organic compounds as they were universal in the water cycle and drinking water sources. However, no study has investigated the presence of HMSAs in surface water and sediment from China. The present study reports the occurrence and spatiotemporal distribution of seven HMSAs in water and sediment samples from Hangzhou Bay, China. Trifluoromethanesulfonic acid (TFMSA) was the main contributor to the concentrations of HMSAs in water and sediment samples from spring, summer, autumn and winter which were 30.8-541 ng/L, n. d.-86.6 ng/L, 4.22-70.9 ng/L and 8.86-192 ng/L, separately, while in sediment samples were n. d.-11.1 ng/g, n. d.-12.9 ng/g, n. d.-22.5 ng/g, n. d.-4.60 ng/g, respectively. The levels of HMSAs in water from winter and spring were higher than those in summer and autumn, and the concentrations of the target HMSAs in water presents a seasonal pattern affected by the temperature, the precipitation and river flow variations. Nevertheless, the levels of HMSAs in sediment were highest in the area near the industrial area and the confluences of rivers. Correlation analysis revealed that the concentrations of TFMSA were significantly positively correlated with total organic carbon (TOC) in water samples. Although TFMSA is regarded as low toxic based on the EC50 value of acute toxicity, the potential risks to aquatic ecology should be paid more attention due to its high concentrations in the aquatic system and the environmental persistency.
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Affiliation(s)
- Fang Tao
- Institute of Environmental and Health Sciences, China Jiliang University, Hangzhou, 310018, People's Republic of China; College of Quality and Safety Engineering, China Jiliang University, Hangzhou, 310018, People's Republic of China
| | - Yujia Tan
- School of Environmental Science and Engineering, Shanghai Jiao Tong University, 800 Dongchuan Road, Shanghai, 200240, China
| | - Junwei Dai
- Focused Photonics (Hangzhou), Inc., Hangzhou, Zhejiang, 310052, China
| | - Congrui Lu
- School of Environmental Science and Engineering, Shanghai Jiao Tong University, 800 Dongchuan Road, Shanghai, 200240, China; Shanghai Jianke Environmental Technology Co., Ltd, Shanghai, 200032, China
| | - Yadong Sha
- School of Environmental Science and Engineering, Shanghai Jiao Tong University, 800 Dongchuan Road, Shanghai, 200240, China
| | - Yi Liu
- Center of Environmental Science and Engineering, University of Connecticut, Storrs, CT, 06269, USA
| | - Xinxing Zhou
- Focused Photonics (Hangzhou), Inc., Hangzhou, Zhejiang, 310052, China
| | - Qingele Hasi
- Xinjiang Bole Environmental Monitoring Centre, Bole, Xinjiang, 833400, China
| | - Zhemin Shen
- School of Environmental Science and Engineering, Shanghai Jiao Tong University, 800 Dongchuan Road, Shanghai, 200240, China; Shanghai Institute of Pollution Control and Ecological Security, Shanghai, 200092, China; Shanghai Engineering Research Center of Solid Waste Treatment and Resource Recovery, Shanghai, 200240, China
| | - Yuning Ma
- School of Environmental Science and Engineering, Shanghai Jiao Tong University, 800 Dongchuan Road, Shanghai, 200240, China; Focused Photonics (Hangzhou), Inc., Hangzhou, Zhejiang, 310052, China.
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11
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Riddell JL, Downey AR, Vesper DJ, Padilla IY. Total organic carbon concentrations in clastic cave sediments from Butler Cave, Virginia, USA: implications for contaminant fate and transport. Environ Earth Sci 2023; 82:231. [PMID: 38078192 PMCID: PMC10705820 DOI: 10.1007/s12665-023-10893-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/06/2022] [Accepted: 04/06/2023] [Indexed: 04/29/2024]
Abstract
Clastic cave deposits are representative of sediments throughout the karst aquifer and thus are an abundant and accessible resource through which to study the chemistry of karst aquifer. Clastic cave sediments are attributed to depositional facies based on cave location, sorting, and particle size. These facies settings may influence different chemical parameters of the sediments, like concentrations of total organic carbon (TOC). The TOC concentrations in clastic cave sediments have not been well constrained nor has the role of clastic sediments in contaminant fate and transport through karst systems been well described. In this study, particle size, TOC, and total nitrogen were measured in sediments representing different facies in Butler Cave, Virginia, USA. TOC concentrations ranged from 0.08 - 0.87 weight percent and C:N molar ratio ranged from 3 - 15, indicating a possible terrestrial source of organic carbon in these sediments. The diamicton facies was sandier and but had similar TOC concentrations compared to the channel facies. TOC concentrations measured in Butler Cave were within the same range as those observed in above water, eogenetic clastic cave sediments from two caves in Puerto Rico. Estimated retardation factors calculated based on the TOC concentrations in the Butler Cave sediments indicate the range of TOC in this cave could be responsible for 39 - 987% increase in retardation of selected contaminants. This study highlights the importance of measuring the ranges of TOC in clastic cave sediments across different facies and their role in contaminant fate and transport.
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Affiliation(s)
- Jill L. Riddell
- West Virginia University Department of Geology and Geography 98 Beechurst Avenue, Morgantown WV 26508
| | - Autum R. Downey
- University of Washington Department of Earth and Space Sciences 4000 15 Avenue NE, Seattle WA 98195
| | - Dorothy J. Vesper
- West Virginia University Department of Geology and Geography 98 Beechurst Avenue, Morgantown WV 26508
| | - Ingrid Y. Padilla
- University of Puerto Rico Mayagüez, Department of Civil Engineering and Surveying, PO Box 9000, Mayagüez, PR 00681
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12
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Bottemanne H, Arnould A, Najar A, Delaigue F, Serresse L, Joly L, Mouchabac S. [Combination of ketamine and esketamine with Exposure and Response Prevention (ERP) therapy for Obsessive-Compulsive Disorder]. Encephale 2023; 49:304-311. [PMID: 37095049 DOI: 10.1016/j.encep.2022.08.011] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/30/2021] [Revised: 07/24/2022] [Accepted: 08/04/2022] [Indexed: 04/26/2023]
Abstract
Obsessive-Compulsive Disorder (OCD), characterized by the combination of obsession and compulsion, is a clinical and therapeutic challenge. Many patients with OCD do not respond to first-line treatments such as serotonin selective reuptake inhibitors (SSRIs) and exposure and response prevention psychotherapy (ERP). For these resistant patients, some preliminary studies have shown that ketamine, a non-selective glutamatergic NMDA receptors antagonist, could improve the obsessive symptoms. A number of these studies have also suggested that the combination of ketamine with ERP psychotherapy may jointly potentiate the effectiveness of ketamine and ERP. In this paper, we present the existing data on the combined use of ketamine with ERP psychotherapy for OCD. We suggest that modulation of NMDA receptor activity and glutamatergic signaling by ketamine may promote the therapeutic mechanisms involved in ERP such as fear extinction and brain plasticity mechanisms. Finally, we propose a ketamine-augmented ERP psychotherapy (KAP-ERP) protocol in OCD, and we present the limitations associated with its application in clinical practice.
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Affiliation(s)
- Hugo Bottemanne
- Paris Brain Institute - Institut du Cerveau (ICM), UMR 7225/UMRS 1127, Sorbonne University/CNRS/Inserm, Paris, France; Sorbonne University, Department of Philosophy, SND Research Unit, UMR 8011, CNRS, Paris, France; Department of Psychiatry, Pitié-Salpêtrière Hospital, Sorbonne University, DMU Neuroscience, Assistance Publique-Hôpitaux de Paris (AP-HP), Paris, France.
| | - Alice Arnould
- Department of Psychiatry, Pitié-Salpêtrière Hospital, Sorbonne University, DMU Neuroscience, Assistance Publique-Hôpitaux de Paris (AP-HP), Paris, France
| | - Amaury Najar
- Department of Psychiatry, Pitié-Salpêtrière Hospital, Sorbonne University, DMU Neuroscience, Assistance Publique-Hôpitaux de Paris (AP-HP), Paris, France
| | - Fanny Delaigue
- Department of Psychiatry, Pitié-Salpêtrière Hospital, Sorbonne University, DMU Neuroscience, Assistance Publique-Hôpitaux de Paris (AP-HP), Paris, France
| | - Laure Serresse
- Sorbonne University, Unité Mobile d'Accompagnement et de Soins Palliatifs, Pitié-Salpêtrière Hospital, AP-HP, Paris, France
| | - Lucie Joly
- Paris Brain Institute - Institut du Cerveau (ICM), UMR 7225/UMRS 1127, Sorbonne University/CNRS/Inserm, Paris, France; Department of Psychiatry, Saint Antoine Hospital, Sorbonne University, DMU Neuroscience, Assistance Publique-Hôpitaux de Paris (AP-HP), Paris, France
| | - Stéphane Mouchabac
- Paris Brain Institute - Institut du Cerveau (ICM), UMR 7225/UMRS 1127, Sorbonne University/CNRS/Inserm, Paris, France; Department of Psychiatry, Saint Antoine Hospital, Sorbonne University, DMU Neuroscience, Assistance Publique-Hôpitaux de Paris (AP-HP), Paris, France
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13
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Crapart C, Finstad AG, Hessen DO, Vogt RD, Andersen T. Spatial predictors and temporal forecast of total organic carbon levels in boreal lakes. Sci Total Environ 2023; 870:161676. [PMID: 36731567 DOI: 10.1016/j.scitotenv.2023.161676] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/16/2022] [Revised: 12/21/2022] [Accepted: 01/13/2023] [Indexed: 06/18/2023]
Abstract
Browning of Fennoscandian boreal lakes is raising concerns for negative ecosystem impacts as well as reduced drinking water quality. Declined sulfur deposition and warmer climate, along with afforestation, other climate impacts and less outfield grazing, have resulted in increased fluxes of Total Organic Carbon (TOC) from catchments to freshwater, and subsequently to coastal waters. This study assesses the major governing factors for increased TOC levels among several catchment characteristics in almost 5000 Fennoscandian lakes and catchments. Normalized Difference Vegetation Index (NDVI), a proxy for plant biomass, and the proportions of peatland in the catchment, along with surface runoff intensity and nitrogen deposition loading, were identified as the main spatial predictors for lake TOC concentrations. A multiple linear model, based on these explanatory variables, was used to simulate future TOC concentration in surface runoff from coastal drainage basins in 2050 and 2100, using the forecasts of climatic variables in two of the Shared Socio-economic Pathways (SSP): 1-2.6 (+2 °C) and 3-7.0 (+4,5 °C). These scenarios yield contrasting effects. SSP 1-2.6 predicts an overall decrease of TOC export to coastal waters, while SSP 3-7.0 in contrast leads to an increase in TOC export.
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Affiliation(s)
- Camille Crapart
- Department of Chemistry and Centre for Biogeochemistry in the Anthropocene, University of Oslo, P.O. Box 1033, 0315 Oslo, Norway.
| | - Anders G Finstad
- Department of Natural History, Centre for Biodiversity Dynamics, Norwegian University of Science and Technology, 7491 Trondheim, Norway
| | - Dag O Hessen
- Department of Biosciences and Centre for Biogeochemistry in the Anthropocene, University of Oslo, P.O. Box 1066, 0316 Oslo, Norway
| | - Rolf D Vogt
- Norwegian Institute for Water Research, Økernveien 94, 0579 Oslo, Norway
| | - Tom Andersen
- Department of Biosciences and Centre for Biogeochemistry in the Anthropocene, University of Oslo, P.O. Box 1066, 0316 Oslo, Norway
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14
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Schwarze M, Borchardt S, Frisch ML, Collis J, Walter C, Menezes PW, Strasser P, Driess M, Tasbihi M. Degradation of Phenol via an Advanced Oxidation Process (AOP) with Immobilized Commercial Titanium Dioxide (TiO 2) Pho tocatalysts. Nanomaterials (Basel) 2023; 13:1249. [PMID: 37049342 PMCID: PMC10097325 DOI: 10.3390/nano13071249] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 03/06/2023] [Revised: 03/22/2023] [Accepted: 03/24/2023] [Indexed: 06/19/2023]
Abstract
Four commercial titanium dioxide (TiO2) photocatalysts, namely P25, P90, PC105, and PC500, were immobilized onto steel plates using a sol-gel binder and investigated for phenol degradation under 365 nm UV-LED irradiation. High-performance liquid chromatography (HPLC) and total organic carbon (TOC) analyses were performed to study the impact of three types of oxygen sources (air, dispersed synthetic air, and hydrogen peroxide) on the photocatalytic performance. The photocatalyst films were stable and there were significant differences in their performance. The best result was obtained with the P90/UV/H2O2 system with 100% degradation and about 70% mineralization within 3 h of irradiation. The operating conditions varied, showing that water quality is crucial for the performance. A wastewater treatment plant was developed based on the lab-scale results and water treatment costs were estimated for two cases of irradiation: UV-LED (about 600 EUR/m3) and sunlight (about 60 EUR/m3). The data show the high potential of immobilized photocatalysts for pollutant degradation under advanced oxidation process (AOP) conditions, but there is still a need for optimization to further reduce treatment costs.
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Affiliation(s)
- Michael Schwarze
- Department of Chemistry, Technische Universität Berlin, Straße des 17. Juni 124, 10623 Berlin, Germany
| | - Steffen Borchardt
- Department of Chemistry, Technische Universität Berlin, Straße des 17. Juni 124, 10623 Berlin, Germany
| | - Marvin L. Frisch
- Department of Chemistry, Technische Universität Berlin, Straße des 17. Juni 124, 10623 Berlin, Germany
| | - Jason Collis
- Department of Chemistry, Technische Universität Berlin, Straße des 17. Juni 124, 10623 Berlin, Germany
| | - Carsten Walter
- Department of Chemistry, Technische Universität Berlin, Straße des 17. Juni 124, 10623 Berlin, Germany
| | - Prashanth W. Menezes
- Department of Chemistry, Technische Universität Berlin, Straße des 17. Juni 124, 10623 Berlin, Germany
- Materials Chemistry Group for Thin Film Catalysis—CatLab, Helmholtz-Zentrum Berlin für Materialien und Energie, Albert-Einstein-Str. 15, 12489 Berlin, Germany
| | - Peter Strasser
- Department of Chemistry, Technische Universität Berlin, Straße des 17. Juni 124, 10623 Berlin, Germany
| | - Matthias Driess
- Department of Chemistry, Technische Universität Berlin, Straße des 17. Juni 124, 10623 Berlin, Germany
| | - Minoo Tasbihi
- Department of Chemistry, Technische Universität Berlin, Straße des 17. Juni 124, 10623 Berlin, Germany
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15
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Wang X, Zhang Y, Zhang C, Wei H, Jin H, Mu Z, Chen X, Chen X, Wang P, Guo X, Ding F, Liu X, Ma L. Artificial intelligence-aided preparation of perovskite SrFe xZr 1-xO 3-δ catalysts for ozonation degradation of organic pollutant concentrated water after membrane treatment. Chemosphere 2023; 318:137825. [PMID: 36681194 DOI: 10.1016/j.chemosphere.2023.137825] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/24/2022] [Revised: 12/20/2022] [Accepted: 01/10/2023] [Indexed: 06/17/2023]
Abstract
Membrane technology has been widely used to treat wastewater from a variety of industries, but it also results in a large amount of concentrated wastewater containing organic pollutants after membrane treatment, which is challenging to decompose. Here in this work, a series of perovskite SrFexZr1-xO3-δ catalysts were prepared via a modified co-precipitation method and evaluated for catalytic ozone oxidative degradation of m-cresol. An artificial neural intelligence networks (ANN) model was employed to train the experimental data to optimize the preparation parameters of catalysts, with SrFe0.13Zr0.87O3-δ being the optimal catalysts. The resultant catalysts before and after reduction were then thoroughly characterized and tested for m-cresol degradation. It was found that the co-doping of Fe and Zr at the B-site and the improvement of oxygen vacancies and oxygen active species by reduction dramatically increased TOC removal rates up to 5 times compared with ozone alone, with the conversion rate of m-cresol reaching 100%. We also proposed a possible mechanism for m-cresol degradation via investigating the intermediates using GC-MS, and confirmed the good versatility of the reduced SrFe0.13Zr0.87O3-δ catalyst to remove other common organic pollutants in concentrated wastewater. This work demonstrates new prospects for the use of perovskite materials in wastewater treatment.
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Affiliation(s)
- Xu Wang
- Beijing Key Laboratory of Fuels Cleaning and Advanced Catalytic Emission Reduction Technology/College of Chemical Engineering, Beijing Institute of Petrochemical Technology, Beijing 102617, Beijing, PR China
| | - Yanan Zhang
- Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, PR China
| | - Cheng Zhang
- Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, PR China
| | - Huangzhao Wei
- Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, PR China
| | - Haibo Jin
- Beijing Key Laboratory of Fuels Cleaning and Advanced Catalytic Emission Reduction Technology/College of Chemical Engineering, Beijing Institute of Petrochemical Technology, Beijing 102617, Beijing, PR China
| | - Zhao Mu
- Institute of Applied Chemical Technology for Oilfield/ College of New Chemical Engineering, Beijing Institute of Petrochemical Technology, Beijing 102617, Beijing, PR China
| | - Xiaofei Chen
- Chen Ping Laboratory of TIANS Engineering Technology Group Co. Ltd., Shijiazhuang 050000, Hebei, PR China
| | - Xinru Chen
- Beijing Key Laboratory of Fuels Cleaning and Advanced Catalytic Emission Reduction Technology/College of Chemical Engineering, Beijing Institute of Petrochemical Technology, Beijing 102617, Beijing, PR China
| | - Ping Wang
- Beijing Key Laboratory of Fuels Cleaning and Advanced Catalytic Emission Reduction Technology/College of Chemical Engineering, Beijing Institute of Petrochemical Technology, Beijing 102617, Beijing, PR China
| | - Xiaoyan Guo
- Beijing Key Laboratory of Fuels Cleaning and Advanced Catalytic Emission Reduction Technology/College of Chemical Engineering, Beijing Institute of Petrochemical Technology, Beijing 102617, Beijing, PR China
| | - Fuchen Ding
- Beijing Key Laboratory of Fuels Cleaning and Advanced Catalytic Emission Reduction Technology/College of Chemical Engineering, Beijing Institute of Petrochemical Technology, Beijing 102617, Beijing, PR China.
| | - Xiaowei Liu
- Advanced Membranes and Porous Materials Center, Division of Physical Sciences and Engineering, King Abdullah University of Science and Technology, Thuwal 23955-6900, Saudi Arabia.
| | - Lei Ma
- Beijing Key Laboratory of Fuels Cleaning and Advanced Catalytic Emission Reduction Technology/College of Chemical Engineering, Beijing Institute of Petrochemical Technology, Beijing 102617, Beijing, PR China.
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16
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Li F, He S, Liu B, Yang J, Wang X, Liang X. Biochar-blended manure modified by polyacrylamide to reduce soil colloidal phosphorus leaching loss. Environ Sci Pollut Res Int 2023; 30:38592-38604. [PMID: 36585585 DOI: 10.1007/s11356-022-24948-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/20/2022] [Accepted: 12/20/2022] [Indexed: 06/17/2023]
Abstract
Combined application of biochar and organic fertilizer improves soil structure and crop yield but may lead to increased loss of phosphorus (P). To reduce the P loss risk in this case, rice straw biochar (BC) and sheep manure (SM) were modified using polyacrylamide (PAM). The effects of using organic amendments (BC, SM, and PAM-modified organic mixtures) and no amendments (CK) on soil total and colloidal P leaching loss from paddy soils were evaluated through soil column leaching experiments. The soil leachate volume was increased by 8.91% with BC treatment and reduced by 15.3% with SM treatment. The total P leaching loss (973.9 μg kg-1) from the BC-treated soil was higher than that from other treatments (541.4-963.5 μg kg-1). However, there was much more colloidal P loss (480.0 μg kg-1) from SM treatment. The optimal conditions for the preparation of BC and SM modified using polyacrylamide (PSB) for reducing P leaching loss were SM/BC = 4:1, 1% PAM, and 100 °C. Molybdate-unreactive P accounts for 58.61-86.89% of the colloidal P in the soil leachate with organic amendments. PSB reduced colloidal P loss (particularly in 10-220 nm range) by ~ 50% compared with BC and SM treatments. The colloidal P concentration in the leaching solutions was significantly correlated with TOC and susceptible to Fe and Al concentrations. Using PAM-modified mixture instead of manure and biochar as a soil amendment can effectively control P leaching from fields.
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Affiliation(s)
- Fayong Li
- College of Water Resources and Architectural Engineering, Tarim University, Alar, 843300, Xinjiang, China
| | - Shuang He
- Key Laboratory of Environment Remediation and Ecological Health, Ministry of Education, College of Environmental and Resources Sciences, Zhejiang University, Hangzhou, 310058, China
| | - Boyi Liu
- Key Laboratory of Environment Remediation and Ecological Health, Ministry of Education, College of Environmental and Resources Sciences, Zhejiang University, Hangzhou, 310058, China
| | - Jiao Yang
- Key Laboratory of Environment Remediation and Ecological Health, Ministry of Education, College of Environmental and Resources Sciences, Zhejiang University, Hangzhou, 310058, China
| | - Xiaochun Wang
- Key Laboratory of Environment Remediation and Ecological Health, Ministry of Education, College of Environmental and Resources Sciences, Zhejiang University, Hangzhou, 310058, China
| | - Xinqiang Liang
- Key Laboratory of Environment Remediation and Ecological Health, Ministry of Education, College of Environmental and Resources Sciences, Zhejiang University, Hangzhou, 310058, China.
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17
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Norabadi E, Jahantiq A, Kamani H. Synthesis of Fe-TiO 2@Fe 3O 4 magnetic nanoparticles as a recyclable sonocatalyst for the degradation of 2, 4-dichlorophenol. Environ Sci Pollut Res Int 2023; 30:31446-31460. [PMID: 36449236 DOI: 10.1007/s11356-022-24345-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/18/2022] [Accepted: 11/16/2022] [Indexed: 06/17/2023]
Abstract
2, 4-Dichlorophenol is a type of chlorophenol that, even at low concentrations, causes adverse effects such as anemia, coma, weakening of the nervous system, and cancer in humans and other organisms. Therefore, the aim of this study was to synthesize the Fe-TiO2@Fe3O4 sonocatalyst and to assess the removal efficiency of 2, 4-dichlorophenol using this sonocatalyst. Scanning electron microscopy (SEM), energy dispersive X-ray spectroscopy (EDX), Fourier transform infrared spectroscopy (FT-IR), X-ray diffraction (XRD), value-stream mapping (VSM), Brunauer Emmett Teller (BET), and diffuse reflectance spectroscopy (DRS) analyses were performed for characterizing the synthesized nanoparticles. The effect of different factors, such as pH (3-9), initial concentration 2, 4-dichlorophenol (20-80 mg/L), and level of nanoparticles (200-600 mg/L) at different time points (15-90 min), was assessed on sonocatalytic removal of 2, 4-dichlorophenol, and then the reaction kinetics, process mechanism, and stability of the synthesized nanoparticles were determined under optimal conditions. The highest removal efficiency of 2, 4-dichlorophenol and constant reaction rate was obtained at pH of 5, the initial concentration of 20 mg/L, and the nanoparticles dose of 400 mg/L under ultrasound with a frequency of 35 kHz following the reaction time of 90 min. The maximum mineralization efficiency (total organic carbon TOC) under optimal conditions was 81%. Analysis of the degradation kinetics indicated that the 2, 4-dichlorophenol degradation can follow a first-order reaction. The stability of the synthesized sonocatalyst decreased by 91% after 5 re-uses. This study confirmed the efficiency of the Fe-TiO2@Fe3O4 sonocatalytic process in the degradation and mineralization of 2, 4-dichlorophenol.
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Affiliation(s)
- Elham Norabadi
- Student Research Committee, Zahedan University of Medical Sciences, Zahedan, Iran
| | - Anis Jahantiq
- Student Research Committee, Zahedan University of Medical Sciences, Zahedan, Iran
| | - Hossein Kamani
- Health Promotion Research Center, Zahedan University of Medical Sciences, Zahedan, Iran.
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18
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Shao K, Zhang L, Ba T, Chao J, Gao G. Bacterial community composition of the sediment in Sayram Lake, an alpine lake in the arid northwest of China. BMC Microbiol 2023; 23:47. [PMID: 36823577 DOI: 10.1186/s12866-023-02793-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2023] [Accepted: 02/13/2023] [Indexed: 02/25/2023] Open
Abstract
Sediment bacterial communities play a critical role in biogeochemical cycling in alpine lake ecosystems. However, little is known about the sediment microbial communities in these lakes. In this study, the bacterial community composition (BCC) and their relationships with environmental factors of the sediment in Sayram Lake, the largest alpine and cold-water inland lake, China was analyzed using Illumina MiSeq sequencing. In total, we obtained 618,271 high quality sequences. The results showed that the bacterial communities with 30 phyla and 546 genera, were spread out among the 5 furface sediment samples, respectively. The communities were dominated by Proteobacteria, Acidobacteria, Planctomycetes, Gemmatimonadetes, Chloroflexi, Actinobacteria, Verrucomicrobia and Bacteroidetes, accounting for 48.15 ± 8.10%, 11.23 ± 3.10%, 8.42 ± 2.15%, 8.37 ± 2.26%, 7.40 ± 3.05%, 5.62 ± 1.25%, 4.18 ± 2.12% and 2.24 ± 1.10% of the total reads, respectively. At the genus level, the communities were dominated by Aquabacterium, Pseudomonas, Woeseia, MND1, Ignavibacterium and Truepera, accounting for 7.89% ± 8.24%, 2.32% ± 1.05%, 2.14% ± 0.94%, 2% ± 1.22%, 0.94% ± 0.14% and 0.80% ± 0.14% of the total reads, respectively. Statistical analyses showed the similarity of the sediment bacterial communities at our field sites was considerably low, far below 35%, and total organic carbon (TOC) was the dominant environmental factor affecting the spatial changes of BCC in the sediment. Thus, this study greatly improving our understanding of the microbial ecology of alpine lake in the arid and semi-arid ecosystems today so seriously threatened.
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Ambade B, Sethi SS, Chintalacheruvu MR. Distribution, risk assessment, and source apportionment of polycyclic aromatic hydrocarbons (PAHs) using positive matrix factorization (PMF) in urban soils of East India. Environ Geochem Health 2023; 45:491-505. [PMID: 35201547 DOI: 10.1007/s10653-022-01223-x] [Citation(s) in RCA: 44] [Impact Index Per Article: 44.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/04/2021] [Accepted: 02/04/2022] [Indexed: 06/14/2023]
Abstract
This study investigated 16 United States environmental protection agency priority PAHs profiles and their sources in 40 urban soils collected from two industrialised cities, Jamshedpur and Bokaro, in east India and assessed their health risk to humans. The results showed the predominance of high molecular weight (HMW) PAHs (4-5 rings). The total PAHs concentration in surface soils ranged from 2223 to 11,266 ng/g and 729 to 5359 ng/g (dw), respectively, for Jamshedpur and Bokaro. Higher concentrations of PAHs were recorded at the selected industrial areas and heavy traffic zones of both cities. In JSR city 4-ring PAHs contributed 43% of total PAHs trailed by 5-ring PAHs 27.2%. Similarly, in BKR city 4-ring PAHs contributed 34% of the total PAHs, followed by 3-ring PAHs 28.9% and 5-ring PAHs 22.9%. Total organic carbon in surface soils exhibited moderate correlation with the low molecular weight (ΣLMW) PAHs (R2 = 0.69) and a comparatively strong correlation with the ΣHMW PAHs (R2 = 0.89), suggesting strong adsorption of HMW PAHs to urban soils. The Diagnostic and PMF modelling analysis indicated that the major sources of PAHs contamination in soils were petroleum combustion, vehicular emissions, biomass, and coal combustion. The health risk assessment shows that the cumulative probability of carcinogenic risks was under the acceptable limits of 10-4 to 10-6. At some sampling areas in both cities, the maximum value of total exposure cancer risk slightly exceeded the acceptable limits indicating some carcinogenic risk for adults.
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Affiliation(s)
- Balram Ambade
- Department of Chemistry, National Institute of Technology, Jamshedpur, Jharkhand, 831014, India.
| | - Shrikanta Shankar Sethi
- Department of Chemistry, National Institute of Technology, Jamshedpur, Jharkhand, 831014, India
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Skic K, Boguta P, Klimkowicz-Pawlas A, Ukalska-Jaruga A, Baran A. Effect of sorption properties on the content, ecotoxicity, and bioaccumulation of polycyclic aromatic hydrocarbons (PAHs) in bottom sediments. J Hazard Mater 2023; 442:130073. [PMID: 36209611 DOI: 10.1016/j.jhazmat.2022.130073] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/14/2022] [Revised: 09/15/2022] [Accepted: 09/25/2022] [Indexed: 06/16/2023]
Abstract
Polycyclic aromatic hydrocarbons (PAHs) tend to accumulate in the sediment due to their high hydrophobicity. Despite PAHs have been the subject of several reviews, PAH sorption processes in bottom sediments has not been comprehensively discucorrelation coefficients between sorption parameters and contessed. Understanding the dependencies governing PAH sorption processes will allow to predict, monitor, and mitigate the ecological effects of PAH contamination and the associated risks to humans or wildlife. The objectives of the study were to assess the relationship between the sorption properties and the content of PAHs in bottom sediments and mussels. The PAH profile was dominated by higher-molecular hydrocarbons, which accounted for 73% of the total concentration of PAHs. Potentiometric studies revealed the steric-based PAH sorption mechanism that strongly depended on the presence of negatively dissociating structures such as carboxylic or phenolic functional groups. Based on the changes in Q8 values, the size-exclusion effect was more likely for 5- and 6-ring compounds. Pores < 5 µm, which had the largest share in the specific surface area, were the preferred sites for PAH sequestration and stabilization in bottom sediments. The availability of PAHs was reduced in sediments with high organic matter content. The PAH bioaccumulation factor significantly decreased with increasing TOC content in sediments. Higher mortality and growth inhibition of H. incongruens were observed in samples with high and medium TOC contents than in those with low TOC content.
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Affiliation(s)
- Kamil Skic
- Institute of Agrophysics, Polish Academy of Sciences, Doświadczalna 4, Lublin 20-290, Poland.
| | - Patrycja Boguta
- Institute of Agrophysics, Polish Academy of Sciences, Doświadczalna 4, Lublin 20-290, Poland.
| | - Agnieszka Klimkowicz-Pawlas
- Institute of Soil Science and Plant Cultivation - State Research Institute, Department of Soil Science Erosion and Land Protection, Czartoryskich 8, Puławy 24-100, Poland.
| | - Aleksandra Ukalska-Jaruga
- Institute of Soil Science and Plant Cultivation - State Research Institute, Department of Soil Science Erosion and Land Protection, Czartoryskich 8, Puławy 24-100, Poland.
| | - Agnieszka Baran
- Department of Agricultural and Environmental Chemistry, University of Agriculture in Krakow, al. Mickiewicza 21, Krakow, Poland.
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Sonko A, Copin D, Brehmer P, Diop C, Constantin De Magny G, Fall M, Kande Y, Moulin P, Faye NS, Faye S, Linossier I, Le Pennec G. Assessment of the global toxicity of marine sediments from the Dakar peninsula (Senegal, West Africa). Environ Monit Assess 2022; 195:185. [PMID: 36482211 DOI: 10.1007/s10661-022-10635-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/09/2021] [Accepted: 10/07/2022] [Indexed: 06/17/2023]
Abstract
Marine pollution in West Africa is major threat particularly around coastal megacities. We assess the chemical and ecotoxicological quality of the marine sediments in various submerged sampling sites of Dakar. Analysis revealed that sediments were slightly basic in which fine and coarse sands predominated. High percentages of total organic carbon were found sometime above 6%. Higher levels of heavy metal were reported than in previous studies. Chromium and nickel were above the Probable Effect Concentration. Low trophic level appeared not affected by the overall toxicity, while medium trophic level was more affected. Indeed, the vast majority (91%) of sites studied revealed a net percentage of Magallana gigas embryolarval developmental abnormality over 20%. The assessment of the global toxicity of marine sediments from the Dakar sites Studied (n = 11) seemed, almost, as a whole, to be in a poor ecotoxicological state calling to take measures to improve the sanitary condition of this marine feature.
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Affiliation(s)
- Amidou Sonko
- Institut Sénégalais de Recherches Agricoles, ISRA, CRODT, Dakar, Senegal.
- Laboratory of Marine Biotechnology and Chemistry (LBCM), University of Southern Brittany (UBS), BP 56100, Lorient, France.
- Laboratoire de Toxicologie et d'Hydrologie, Université Cheikh Anta Diop de Dakar (UCAD), BP 5246, Dakar-Fann, Senegal.
- IRD, Univ Brest, CNRS, Ifremer, BP 1386, Dakar, Senegal.
| | - Dalyal Copin
- Laboratory of Marine Biotechnology and Chemistry (LBCM), University of Southern Brittany (UBS), BP 56100, Lorient, France
| | | | - Cheikh Diop
- Laboratoire de Toxicologie et d'Hydrologie, Université Cheikh Anta Diop de Dakar (UCAD), BP 5246, Dakar-Fann, Senegal
| | - Guillaume Constantin De Magny
- MIVEGEC, Univ. Montpellier, CNRS, Montpellier, IRD, France
- Montpellier Ecology and Evolution of Disease Network (MEEDiN), Montpellier, France
| | - Mamadou Fall
- Laboratoire de Toxicologie et d'Hydrologie, Université Cheikh Anta Diop de Dakar (UCAD), BP 5246, Dakar-Fann, Senegal
| | - Yoba Kande
- Institut Sénégalais de Recherches Agricoles, ISRA, CRODT, Dakar, Senegal
- IRD, Univ Brest, CNRS, Ifremer, BP 1386, Dakar, Senegal
- Mathematics Department, University Alioune Diop of Bambey, UADB, Bambey, Senegal
| | | | - Naby Souleymane Faye
- Institut Sénégalais de Recherches Agricoles, ISRA, CRODT, Dakar, Senegal
- IRD, Univ Brest, CNRS, Ifremer, BP 1386, Dakar, Senegal
| | - Saliou Faye
- Institut Sénégalais de Recherches Agricoles, ISRA, CRODT, Dakar, Senegal
| | - Isabelle Linossier
- Laboratory of Marine Biotechnology and Chemistry (LBCM), University of Southern Brittany (UBS), BP 56100, Lorient, France
| | - Gaël Le Pennec
- Laboratory of Marine Biotechnology and Chemistry (LBCM), University of Southern Brittany (UBS), BP 56100, Lorient, France
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Yang J, Jin X, Fu L, Wu C, Wang Q. Effect of extrusion-spheronization granulation and manganese loading on catalytic ozonation of petrochemical wastewater. Environ Sci Pollut Res Int 2022; 29:84861-84872. [PMID: 35788489 DOI: 10.1007/s11356-022-21760-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/12/2022] [Accepted: 06/27/2022] [Indexed: 06/15/2023]
Abstract
The petrochemical secondary effluent (PSE) is typical refractory wastewater derived from the petrochemical industries, which requires advanced treatment due to the strict environmental protection policies. Catalytic ozonation is one of the most widely used advanced oxidation technologies in wastewater treatment because of its high mineralization rate, in which the alumina-based catalyst usually plays an important role. Extrusion-spheronization is a promising technique for the preparation of alumina spheres because the synthesized alumina particles have high sphericity, high specific surface aera and narrow particle size distribution. In this paper, two kinds of alumina-based catalysts (catalyst A: manganese nitrate added after alumina granulation and catalyst B: manganese nitrate added into alumina powder before granulation) were prepared by the extrusion-spheronization method and used for PSE treatment by catalytic ozonation. The prepared alumina samples were characterized by Brunauer-Emmett-Teller (BET) method, X-ray photoelectron spectroscopy (XPS), X-ray diffraction (XRD) and scanning electron microscopy (SEM), while the wastewater samples were analyzed for Total organic carbon (TOC), UV254 and fluorescence spectroscopy. Results showed that manganese was uniformly distributed in both catalysts, and the specific surface area of two catalysts was 318.36 m2/g and 354.95 m2/g, respectively. Catalytic ozonation experiments were repeated nine times with each catalyst under the same conditions. The TOC removal rates for catalysts A and B in the first run were 48.88% and 49.06%, respectively, then it dropped to 28.05% for catalyst A but remained 47.81% for catalyst B after using for nine times. This implied that the long-term performance of catalyst B would be more stable than catalyst A. Similar result were found in three-dimensional fluorescence analysis. UV254 results indicated that the removal efficiency of aromatic and unsaturated substances by catalyst B was higher than catalyst A. A possible explanation is that the active component manganese oxide formed a catalyst skeleton in catalyst B, which makes it hard to dissolve. Effect of extrusion-spheronization granulation and manganese loading on advanced oxidant treatment of petrochemical wastewater.
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Affiliation(s)
- Jin Yang
- School of Chemical & Environmental Engineering, China University of Mining and Technology (Beijing), Beijing, 100083, China
- Research Center of Environmental Pollution Control Engineering Technology, Chinese Research Academy of Environment Sciences, Beijing, 100012, China
| | - Xiaoguang Jin
- Research Center of Environmental Pollution Control Engineering Technology, Chinese Research Academy of Environment Sciences, Beijing, 100012, China
- School of Environment, Tsinghua University, Beijing, 100083, China
| | - Liya Fu
- Research Center of Environmental Pollution Control Engineering Technology, Chinese Research Academy of Environment Sciences, Beijing, 100012, China
| | - Changyong Wu
- Research Center of Environmental Pollution Control Engineering Technology, Chinese Research Academy of Environment Sciences, Beijing, 100012, China.
- State Key Laboratory of Environmental Criteria and Risk Assessment, Chinese Research Academy of Environmental Sciences, Beijing, 100012, China.
| | - Qibao Wang
- School of Chemical & Environmental Engineering, China University of Mining and Technology (Beijing), Beijing, 100083, China
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O'Keeffe J, Akunna J. Assessment of leachable and persistent dissolved organic carbon in sludges and biosolids from municipal wastewater treatment plants. J Environ Manage 2022; 307:114565. [PMID: 35066192 DOI: 10.1016/j.jenvman.2022.114565] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/29/2021] [Revised: 01/16/2022] [Accepted: 01/17/2022] [Indexed: 06/14/2023]
Abstract
Environmental regulation of organic pollutants has not kept pace with the growth in the number and diversity of legacy and emerging organic substances now in use. Simpler and cheaper tools and methodologies are needed to quickly assess the organic pollutant risks in waste materials applied to land such as municipal wastewater treatment sludges and biosolids. This study attempts to provide these, using an approach that consists of chemical leaching and analysis of dissolved organic carbon and determination of its biodegradability by measuring persistent dissolved organic carbon. Primary and secondary sludges, dewatered sludge cake, and anaerobically and thermally treated biosolids obtained from various types of municipal wastewater treatment plants were used in the study. The study found little variability in the levels of dissolved organic carbon leached from primary sludges obtained from different municipal wastewater treatment plants but found significant differences for secondary sludges based on levels of nitrification at the municipal wastewater treatment plants. As predicted treated biosolids leached less dissolved organic carbon than untreated dry sludges but had relatively higher proportions of persistent or poorly biodegradable dissolved organic carbon. Across all tested sludges and biosolids persistent dissolved organic carbon ranged from 14 to 39%, with biosolids that have undergone anaerobic digestion and thermal treatment more likely to contain greater relative proportion of persistent dissolved organic carbon than untreated sludges. The approach presented in this study will be useful in assessing the effectiveness of current and widely employed sludge treatment methods in reducing persistent organic pollutants in biosolids disposed on land.
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Affiliation(s)
- Juliette O'Keeffe
- School of Applied Science, Division of Engineering and Food Sciences University of Abertay, Bell Street, Dundee, Scotland, DD1 1HG, UK.
| | - Joseph Akunna
- School of Applied Science, Division of Engineering and Food Sciences University of Abertay, Bell Street, Dundee, Scotland, DD1 1HG, UK.
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Kodamatani H, Shigetomi A, Akama J, Kanzaki R, Tomiyasu T. Distribution, alkylation, and migration of mercury in soil discharged from the Itomuka mercury mine. Sci Total Environ 2022; 815:152492. [PMID: 34958844 DOI: 10.1016/j.scitotenv.2021.152492] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/24/2021] [Revised: 12/05/2021] [Accepted: 12/13/2021] [Indexed: 06/14/2023]
Abstract
The purpose of this study was to investigate the behavior of previously discharged mercury (Hg) released from the Itomuka Hg mine into the surrounding environment, especially into soil. Total-Hg (T-Hg), methylmercury (MeHg), and ethylmercury (EtHg) concentrations in the surface soil at eight sample sites around the mine were 3.8-64.2 mg/kg, 6.0-54.7 μg/kg, and undetected to 4.5 μg/kg, respectively. Core samples collected from seven of the eight sample sites showed that the vertical distribution of T-Hg was the highest in the surface soil layer and decreased rapidly in the lower layers. A strong positive correlation was observed between T-Hg and MeHg concentrations in the core samples; however, the slope of the regression line varied considerably for each core. This suggests that Hg and MeHg were not supplied from the atmosphere simultaneously, but rather that MeHg was produced on-site. Further, the formation of MeHg and EtHg in soil was considered in terms of the total organic carbon/total nitrogen ratio, which is a decomposition index of soil organic matter. The strong positive correlation between T-Hg and MeHg can be attributed to the migration of organic matter containing Hg species to the lower layers. There was no relationship between T-Hg and MeHg at the riverbed sample site because of the high T-Hg in the lower soil layers, suggesting that Hg was supplied by ore at this sample site. These assumptions of the formation change and migration of Hg in soil were supported by the results of the fractionation experiment and the elution test. To understand the current conditions in this area, measurements of Hg in the water, sediment, atmosphere, and plants were also conducted.
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Affiliation(s)
- Hitoshi Kodamatani
- Division of Earth and Environmental Science, Graduate School of Science and Engineering, Kagoshima University, 1-21-35 Korimoto, Kagoshima 890-0065, Japan.
| | - Azusa Shigetomi
- Division of Earth and Environmental Science, Graduate School of Science and Engineering, Kagoshima University, 1-21-35 Korimoto, Kagoshima 890-0065, Japan
| | - Junna Akama
- Division of Earth and Environmental Science, Graduate School of Science and Engineering, Kagoshima University, 1-21-35 Korimoto, Kagoshima 890-0065, Japan
| | - Ryo Kanzaki
- Division of Earth and Environmental Science, Graduate School of Science and Engineering, Kagoshima University, 1-21-35 Korimoto, Kagoshima 890-0065, Japan
| | - Takashi Tomiyasu
- Division of Earth and Environmental Science, Graduate School of Science and Engineering, Kagoshima University, 1-21-35 Korimoto, Kagoshima 890-0065, Japan
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Kisała J, Tomaszewska A, Barylyak A, Bobitski Y, Balawejder M. Photocatalytic Degradation of 4,4'-Isopropylidenebis(2,6-dibromophenol) on Magnetite Catalysts vs. Ozonolysis Method: Process Efficiency and Toxicity Assessment of Disinfection By-Products. Int J Mol Sci 2022; 23:3438. [PMID: 35408795 DOI: 10.3390/ijms23073438] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2022] [Revised: 03/13/2022] [Accepted: 03/20/2022] [Indexed: 01/27/2023] Open
Abstract
Flame retardants have attracted growing environmental concern. Recently, an increasing number of studies have been conducted worldwide to investigate flame-retardant sources, environmental distribution, living organisms’ exposure, and toxicity. The presented studies include the degradation of 4,4′-isopropylidenebis(2,6-dibromophenol) (TBBPA) by ozonolysis and photocatalysis. In the photocatalytic process, nano- and micro-magnetite (n-Fe3O4 and μ-Fe3O4) are used as a catalyst. Monitoring of TBBPA decay in the photocatalysis and ozonolysis showed photocatalysis to be more effective. Significant removal of TBBPA was achieved within 10 min in photocatalysis (ca. 90%), while for ozonation, a comparable effect was observed within 70 min. To determine the best method of TBBPA degradation concentration on COD and TOC, the removals were examined. The highest oxidation state was obtained for photocatalysis on μ-Fe3O4, whereas for n-Fe3O4 and ozonolysis, the COD/TOC ratio was lower. Acute toxicity results show noticeable differences in the toxicity of TBBPA and its degradation products to Artemia franciscana and Thamnocephalus platyurus. The EC50 values indicate that TBBPA degradation products were toxic to harmful, whereas the TBPPA and post-reaction mixtures were toxic to the invertebrate species tested. The best efficiency in the removal and degradation of TBBPA was in the photocatalysis process on μ-Fe3O4 (reaction system 1). The examined crustaceans can be used as a sensitive test for acute toxicity evaluation.
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Muskus AM, Miltner A, Hamer U, Nowak KM. Microbial community composition and glyphosate degraders of two soils under the influence of temperature, total organic carbon and pH. Environ Pollut 2022; 297:118790. [PMID: 35016983 DOI: 10.1016/j.envpol.2022.118790] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/23/2021] [Revised: 12/15/2021] [Accepted: 01/03/2022] [Indexed: 06/14/2023]
Abstract
Glyphosate can be degraded by soil microorganisms rapidly and is impacted by temperature and soil properties. Enhanced temperature and total organic carbon (TOC) as well as reduced pH increased the rate of 13C315N-glyphosate conversion to CO2 and biogenic non-extractable residues (bioNERs) in a Haplic Chernozem (Muskus et al., 2019) and in a Humic Cambisol (Muskus et al., 2020). To date; however, the combined effect of temperature and TOC or pH on microbial community composition and glyphosate degraders in these two soils has not been investigated. Phospholipid fatty acid [PLFA] biomarker analysis combined with 13C labeling was employed to investigate the effect of two soil properties (pH, TOC) and of three temperatures (10 °C, 20 °C, 30 °C) on soil microorganisms. Before incubation, the properties of a Haplic Chernozem and a Humic Cambisol were adjusted to obtain five treatments: (a) Control (Haplic Chernozem: 2.1% TOC and pH 6.6; Humic Cambisol: 3% TOC and pH 7.0), (b) 3% TOC (Haplic Chernozem) or 4% TOC (Humic Cambisol), (c) 4% TOC (Haplic Chernozem) or 5% TOC (Humic Cambisol), (d) pH 6.0 (Haplic Chernozem) or pH 6.5 (Humic Cambisol), and (e) pH 5.5 for both soils. All treatments were amended with 50 mg kg-1 glyphosate and incubated at 10 °C, 20 °C or 30 °C. We observed an increase in respiration, microbial biomass and glyphosate mineralization with incubation temperature. Although respiration and microbial biomass in the Humic Cambisol was higher, the microorganisms in the Haplic Chernozem were more active in glyphosate degradation. Increased TOC shifted the microbiome and the 13C-glyphosate degraders towards Gram-positive bacteria in both soils. However, the abundance of 13C-PLFAs indicative for the starvation of Gram-negative bacteria increased with increasing TOC or decreasing pH at higher temperatures. Gram-negative bacteria thus may have been involved in earlier stages of glyphosate degradation.
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Affiliation(s)
- Angelica M Muskus
- UFZ - Helmholtz-Centre for Environmental Research, Department of Environmental Biotechnology, Permoserstr. 15, 04318, Leipzig, Germany; Institute of Landscape Ecology, University of Münster, Heisenbergstr. 2, 48149, Münster, Germany; Pontifical Bolivarian University, Environmental Engineering Faculty, Km 7 Vía Piedecuesta, Bucaramanga, Colombia
| | - Anja Miltner
- UFZ - Helmholtz-Centre for Environmental Research, Department of Environmental Biotechnology, Permoserstr. 15, 04318, Leipzig, Germany
| | - Ute Hamer
- Institute of Landscape Ecology, University of Münster, Heisenbergstr. 2, 48149, Münster, Germany
| | - Karolina M Nowak
- UFZ - Helmholtz-Centre for Environmental Research, Department of Environmental Biotechnology, Permoserstr. 15, 04318, Leipzig, Germany.
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Orozco A, Cardoner N, Aragón CF, Ruiz-Murugarren S, Vicens M, Álvarez-Mon MÁ, Lahera G. Obsessive-compulsive symptoms in anxiety and depressive disorders: Influence of recent and/or traumatic life events. Rev Psiquiatr Salud Ment (Engl Ed) 2021; 14:218-226. [PMID: 34861930 DOI: 10.1016/j.rpsmen.2020.12.002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/30/2020] [Accepted: 12/03/2020] [Indexed: 11/30/2022]
Abstract
INTRODUCTION A high prevalence of obsessive-compulsive symptoms (OCSs) in anxiety-depressive disorders ranging from 30 to 67% has been described. OBJECTIVE This study aims to assess the presence and persistence of OCSs in an outpatient sample of subjects with anxiety and depressive disorders, as well as its relationship with recent life events (RLEs) and/or traumatic experiences (TEs). METHOD We conducted a prospective, observational, analytical study of 200 subjects with DSM-5 diagnoses of anxiety and/or depression. Participants were included by consecutive sampling and were evaluated at baseline and after 6-12 months (mean 8.5 months) of follow-up. The severity of the symptoms was assessed through the Hamilton Anxiety Scale (HARS) and Hamilton Scale for the evaluation of depression (HRSD-17), and comorbidity was assessed through the International Neuropsychiatric Interview (MINI). The Revised Inventory of Obsessions and Compulsions (OCI-R), the Recent Vital Changes Questionnaire (CVSV), and the Diagnostic Scale for Post-Traumatic Stress (PDS) were also administered. RESULTS 54% of the sample presented OCSs, and 30.5% presented one or more TEs throughout life. At the baseline visit, the presence of OCSs was associated with the severity of depressive symptoms (p=0.028), the presence of TEs (p<0.01), symptoms of post-traumatic stress disorder (p<0.01) and the number of RLEs (p<0.01). Response rate at follow-up was 38%, and persistence of OCSs was found in 60.5% of patients, independent of depressive or anxious symptoms, but was associated with the number of RLEs (p<0.01). CONCLUSION The presence of OCSs in patients with anxiety and depressive disorders is frequent and persistent. Anxious-depressive patients with a history of TEs and RLEs had higher OCS levels. These findings highlight the importance of early detection and the use of therapeutic strategies focused on resilience to stress and trauma.
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Affiliation(s)
- Arantxa Orozco
- Príncipe de Asturias University Hospital, Alcalá, Madrid, Spain
| | - Narcís Cardoner
- Hospital Universitario Parc Taulí Sabadell, Barcelone, Spain
| | | | | | - María Vicens
- Príncipe de Asturias University Hospital, Alcalá, Madrid, Spain
| | - Miguel Ángel Álvarez-Mon
- Faculty of Medicine, University of Alcalá, Madrid, Spain; Infanta Leonor Hospital, Madrid, Spain
| | - Guillermo Lahera
- Príncipe de Asturias University Hospital, Alcalá, Madrid, Spain; Faculty of Medicine, University of Alcalá, Madrid, Spain; Centre for Biomedical Research in Mental Health (CIBERSAM), Madrid, Spain.
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Wang Q, Huang Q, Wang J, Khan MA, Guo G, Liu Y, Hu S, Jin F, Wang J, Yu Y. Dissolved organic carbon drives nutrient cycling via microbial community in paddy soil. Chemosphere 2021; 285:131472. [PMID: 34265723 DOI: 10.1016/j.chemosphere.2021.131472] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/07/2021] [Revised: 07/01/2021] [Accepted: 07/06/2021] [Indexed: 06/13/2023]
Abstract
Microbial mediated iron cycling drives the biogeochemical cycling of carbon, nitrogen, sulfur, and phosphorus. However, the fate of the microbial community and the relative metabolic pathways in paddy soil after the addition of biogas slurry are poorly understood. In this study, the response of functional genes was investigated by growing one-season rice in paddy soils in a pot experiment. Seven treatments were prepared: 1) control (CK); 2) organic carbon (OC); 3) fertilizer (F); 4) 5% of biogas slurry (B05); 5) 10% of biogas slurry (B10); 6) 15% of biogas slurry (B15); 7) 20% of biogas slurry (B20). In the biogas slurry treatments, Geobacter increased more than in the other treatments during rice growth, which were structured by TOC. Particularly, in the B10 treatment, the relative abundance of Geobacter was 1.6 and 14.8 times higher than that of CK at the heading and mature stages, respectively. At the heading stage, the addition of biogas slurry and OC shifted the microbial phosphorus-transformation communities differently. There were no significant differences in the carbon, nitrogen, and sulfur metabolic pathways between the two treatments. At the mature stage, the carbon: nitrogen: phosphorus balance was significantly influenced by the regulation of functional gene expression and metabolic activities. These findings provide insight into the key factors affecting carbon, nitrogen, sulfur, phosphorus, and iron during rice growth after carbon inputs.
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Affiliation(s)
- Qingqing Wang
- Key Laboratory of Agro-Forestry Environmental Processes and Ecological Regulation of Hainan Province, Haikou, 570228, China; Center for Eco-Environmental Restoration Engineering of Hainan Province, Haikou, 570228, China; State Key Laboratory of Marine Resource Utilization in South China Sea, Hainan University, Haikou, Hainan, 570228, China; Key Laboratory for Environmental Toxicology of Haikou, Hainan University, Haikou, Hainan, 570228, China
| | - Qing Huang
- Key Laboratory of Agro-Forestry Environmental Processes and Ecological Regulation of Hainan Province, Haikou, 570228, China; Center for Eco-Environmental Restoration Engineering of Hainan Province, Haikou, 570228, China; State Key Laboratory of Marine Resource Utilization in South China Sea, Hainan University, Haikou, Hainan, 570228, China; Key Laboratory for Environmental Toxicology of Haikou, Hainan University, Haikou, Hainan, 570228, China; Key Laboratory of Urban Environment and Health, Institute of Urban Environment, Chinese Academy of Sciences, Xiamen, 361021, China.
| | - Jiaxin Wang
- Key Laboratory of Agro-Forestry Environmental Processes and Ecological Regulation of Hainan Province, Haikou, 570228, China; Center for Eco-Environmental Restoration Engineering of Hainan Province, Haikou, 570228, China; State Key Laboratory of Marine Resource Utilization in South China Sea, Hainan University, Haikou, Hainan, 570228, China; Key Laboratory for Environmental Toxicology of Haikou, Hainan University, Haikou, Hainan, 570228, China
| | - Muhammad Amjad Khan
- Key Laboratory of Agro-Forestry Environmental Processes and Ecological Regulation of Hainan Province, Haikou, 570228, China; Center for Eco-Environmental Restoration Engineering of Hainan Province, Haikou, 570228, China; State Key Laboratory of Marine Resource Utilization in South China Sea, Hainan University, Haikou, Hainan, 570228, China; Key Laboratory for Environmental Toxicology of Haikou, Hainan University, Haikou, Hainan, 570228, China
| | - Genmao Guo
- Key Laboratory of Agro-Forestry Environmental Processes and Ecological Regulation of Hainan Province, Haikou, 570228, China; Center for Eco-Environmental Restoration Engineering of Hainan Province, Haikou, 570228, China; State Key Laboratory of Marine Resource Utilization in South China Sea, Hainan University, Haikou, Hainan, 570228, China; Key Laboratory for Environmental Toxicology of Haikou, Hainan University, Haikou, Hainan, 570228, China
| | - Yin Liu
- Key Laboratory of Agro-Forestry Environmental Processes and Ecological Regulation of Hainan Province, Haikou, 570228, China; Center for Eco-Environmental Restoration Engineering of Hainan Province, Haikou, 570228, China; State Key Laboratory of Marine Resource Utilization in South China Sea, Hainan University, Haikou, Hainan, 570228, China; Key Laboratory for Environmental Toxicology of Haikou, Hainan University, Haikou, Hainan, 570228, China
| | - Shan Hu
- Key Laboratory of Agro-Forestry Environmental Processes and Ecological Regulation of Hainan Province, Haikou, 570228, China; Center for Eco-Environmental Restoration Engineering of Hainan Province, Haikou, 570228, China; State Key Laboratory of Marine Resource Utilization in South China Sea, Hainan University, Haikou, Hainan, 570228, China; Key Laboratory for Environmental Toxicology of Haikou, Hainan University, Haikou, Hainan, 570228, China
| | - Fangming Jin
- Key Laboratory of Agro-Forestry Environmental Processes and Ecological Regulation of Hainan Province, Haikou, 570228, China; Center for Eco-Environmental Restoration Engineering of Hainan Province, Haikou, 570228, China; State Key Laboratory of Marine Resource Utilization in South China Sea, Hainan University, Haikou, Hainan, 570228, China; Key Laboratory for Environmental Toxicology of Haikou, Hainan University, Haikou, Hainan, 570228, China
| | - Junfeng Wang
- Key Laboratory of Agro-Forestry Environmental Processes and Ecological Regulation of Hainan Province, Haikou, 570228, China; Center for Eco-Environmental Restoration Engineering of Hainan Province, Haikou, 570228, China; State Key Laboratory of Marine Resource Utilization in South China Sea, Hainan University, Haikou, Hainan, 570228, China; Key Laboratory for Environmental Toxicology of Haikou, Hainan University, Haikou, Hainan, 570228, China; College of Civil and Transportation Engineering, Shenzhen University, Shenzhen, Guangdong, 518061, China
| | - Yunbo Yu
- Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing, 10085, China
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Uddin S, Fowler SW, Saeed T, Jupp B, Faizuddin M. Petroleum hydrocarbon pollution in sediments from the Gulf and Omani waters: Status and review. Mar Pollut Bull 2021; 173:112913. [PMID: 34534928 DOI: 10.1016/j.marpolbul.2021.112913] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/19/2021] [Revised: 07/12/2021] [Accepted: 08/24/2021] [Indexed: 06/13/2023]
Abstract
This review presents the spatio-temporal distribution of petroleum hydrocarbons including total petroleum hydrocarbon (TPH), total organic carbon (TOC), total aliphatics, unresolved complex mixture (UCM), polycyclic aromatic hydrocarbons (PAHs), and total aromatic hydrocarbons in marine sediments of the Gulf (Iraq, Iran, Kuwait, Saudi Arabia, Bahrain, Qatar, United Arab Emirates and Oman). The TPH ranged between 0.134 and 48,018 μg g-1 dw where 10-15 μg g-1 dw was considered as a background concentration. The TOC levels were between 0.04 and 14.96% with a mean concentration of 1.154 ± 0.523%. Total aliphatic hydrocarbon levels were reported between 0.1 and 76 μg g-1, the 2005 levels that had the largest spatial coverage were between 0.1 and 4.4 μg g-1. The unresolved complex mixture was very variable post Gulf War but by 2005 most of the Gulf War artifacts had decreased and the levels were between 1.5 and 73.5 μg g-1. The ƩPAHs in bottom sediments by 2005 were between 0.3 and 3450 ng g-1. The total aromatics were limited in spatial extent and varied between 1.0 and 14,000 μg g-1. Most of the locations with elevated contamination levels were near point sources, e.g. oil facilities and ports, and these sites could be categorized as chronically contaminated by oil. This review highlights the paucity of the data both in terms of the spatial extent and temporal coverage, and with several Gulf states undergoing large-scale coastal developments and offshore oil exploration, it will be prudent to undertake regular monitoring of the petroleum hydrocarbons to ensure effective ecosystem functioning as well as seafood and drinking water safety in the Gulf region. The spatial distribution also highlights the lack of uniformity in assessments and the need to support marine pollution assessments in the Gulf countries.
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Affiliation(s)
- Saif Uddin
- Environment and Life Sciences Research Center, Kuwait Institute for Scientific Research, Kuwait.
| | - Scott W Fowler
- School of Marine and Atmospheric Sciences, Stony Brook University, Stony Brook, NY 11794-5000, USA
| | - Talat Saeed
- Environment and Life Sciences Research Center, Kuwait Institute for Scientific Research, Kuwait
| | - Barry Jupp
- P.O. Box 389, Puerto Princesa, Palawan 5300, Philippines
| | - Mohd Faizuddin
- Gulf Geoinformation Solutions, Sharjah, United Arab Emirates
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Rüger N, Sid H, Meens J, Szostak MP, Baumgärtner W, Bexter F, Rautenschlein S. New Insights into the Host-Pathogen Interaction of Mycoplasma gallisepticum and Avian Metapneumovirus in Tracheal Organ Cultures of Chicken. Microorganisms 2021; 9:microorganisms9112407. [PMID: 34835532 PMCID: PMC8618481 DOI: 10.3390/microorganisms9112407] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2021] [Revised: 11/10/2021] [Accepted: 11/16/2021] [Indexed: 01/04/2023] Open
Abstract
Respiratory pathogens are a health threat for poultry. Co-infections lead to the exacerbation of clinical symptoms and lesions. Mycoplasma gallisepticum (M. gallispeticum) and Avian Metapneumovirus (AMPV) are two avian respiratory pathogens that co-circulate worldwide. The knowledge about the host-pathogen interaction of M. gallispeticum and AMPV in the chicken respiratory tract is limited. We aimed to investigate how co-infections affect the pathogenesis of the respiratory disease and whether the order of invading pathogens leads to changes in host-pathogen interaction. We used chicken tracheal organ cultures (TOC) to investigate pathogen invasion and replication, lesion development, and selected innate immune responses, such as interferon (IFN) α, inducible nitric oxide synthase (iNOS) and IFNλ mRNA expression levels. We performed mono-inoculations (AMPV or M. gallispeticum) or dual-inoculations in two orders with a 24-h interval between the first and second pathogen. Dual-inoculations compared to mono-inoculations resulted in more severe host reactions. Pre-infection with AMPV followed by M. gallispeticum resulted in prolonged viral replication, more significant innate immune responses, and lesions (p < 0.05). AMPV as the secondary pathogen impaired the bacterial attachment process. Consequently, the M. gallispeticum replication was delayed, the innate immune response was less pronounced, and lesions appeared later. Our results suggest a competing process in co-infections and offer new insights in disease processes.
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Affiliation(s)
- Nancy Rüger
- Clinic for Poultry, University of Veterinary Medicine Hannover, 30559 Hannover, Germany; (N.R.); (F.B.)
| | - Hicham Sid
- Reproductive Biotechnology, TUM School of Life Sciences Weihenstephan, Technical University of Munich, 85354 Munich, Germany;
| | - Jochen Meens
- Institute for Microbiology, Centre for Infection Medicine, University of Veterinary Medicine Hannover, 30559 Hannover, Germany;
| | - Michael P. Szostak
- Institute of Microbiology, Department of Pathobiology, University of Veterinary Medicine Vienna, 1210 Vienna, Austria;
| | - Wolfgang Baumgärtner
- Department of Pathology, University of Veterinary Medicine Hannover, 30559 Hannover, Germany;
| | - Frederik Bexter
- Clinic for Poultry, University of Veterinary Medicine Hannover, 30559 Hannover, Germany; (N.R.); (F.B.)
| | - Silke Rautenschlein
- Clinic for Poultry, University of Veterinary Medicine Hannover, 30559 Hannover, Germany; (N.R.); (F.B.)
- Correspondence: ; Tel.: +49-511-953-8779
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Vaezzadeh V, Yi X, Rais FR, Bong CW, Thomes MW, Lee CW, Zakaria MP, Wang AJ, Zhong G, Zhang G. Distribution of black carbon and PAHs in sediments of Peninsular Malaysia. Mar Pollut Bull 2021; 172:112871. [PMID: 34428623 DOI: 10.1016/j.marpolbul.2021.112871] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/06/2021] [Revised: 08/08/2021] [Accepted: 08/13/2021] [Indexed: 06/13/2023]
Abstract
Concentrations, sources and interactions between black carbon (BC) and polycyclic aromatic hydrocarbons (PAHs) were investigated in 42 sediment samples collected from riverine, coastal and shelf areas in Peninsular Malaysia. The concentrations of BC measured by benzene polycarboxylic acid (BPCA) method and PAHs showed broad spatial variations between the relatively pristine environment of the East coast and developed environment of the West and South coast ranging from 0.02 to 0.36% dw and 57.7 ng g-1 dw to 19,300 ng g-1 dw, respectively. Among diagnostic ratios of PAHs, the ratios of Ant/(Ant+Phe) and LMW/HMW drew the clearest distinctions between the East coast versus the West and South coast sediments indicating the predominance of petrogenic sources in the former versus pyrogenic sources in the latter. PAHs significantly correlated with BC and total organic carbon (TOC) in the sediments (p < 0.05) having similar correlation coefficients. BC accounted for 6.06 to 30.6% of TOC in sediments.
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Affiliation(s)
- Vahab Vaezzadeh
- State Key Laboratory of Organic Geochemistry and Guangdong-Hong Kong-Macao Joint Laboratory for Environmental Pollution and Control, Guangzhou Institute of Geochemistry, Chinese Academy of Sciences, Guangzhou 510640, China; CAS Center for Excellence in Deep Earth Science, Guangzhou 510640, China; Institute of Ocean and Earth Sciences, University of Malaya, 50603 Kuala Lumpur, Malaysia
| | - Xin Yi
- State Key Laboratory of Organic Geochemistry and Guangdong-Hong Kong-Macao Joint Laboratory for Environmental Pollution and Control, Guangzhou Institute of Geochemistry, Chinese Academy of Sciences, Guangzhou 510640, China
| | - Farah Rasyidah Rais
- Institute of Ocean and Earth Sciences, University of Malaya, 50603 Kuala Lumpur, Malaysia; Institute for Advanced Studies, University of Malaya, 50603 Kuala Lumpur, Malaysia
| | - Chui Wei Bong
- Institute of Ocean and Earth Sciences, University of Malaya, 50603 Kuala Lumpur, Malaysia; Laboratory of Microbial Ecology, Institute of Biological Sciences, Faculty of Science, University of Malaya, 50603 Kuala Lumpur, Malaysia.
| | - Margaret William Thomes
- Institute of Ocean and Earth Sciences, University of Malaya, 50603 Kuala Lumpur, Malaysia; Institute for Advanced Studies, University of Malaya, 50603 Kuala Lumpur, Malaysia
| | - Choon Weng Lee
- Institute of Ocean and Earth Sciences, University of Malaya, 50603 Kuala Lumpur, Malaysia; Laboratory of Microbial Ecology, Institute of Biological Sciences, Faculty of Science, University of Malaya, 50603 Kuala Lumpur, Malaysia
| | - Mohamad Pauzi Zakaria
- Institute of Ocean and Earth Sciences, University of Malaya, 50603 Kuala Lumpur, Malaysia
| | - Ai Jun Wang
- Laboratory for Coast and Ocean Geology, Third Institute of Oceanography (TIO), Ministry of Natural Resources, Xiamen 361005, China
| | - Guangcai Zhong
- State Key Laboratory of Organic Geochemistry and Guangdong-Hong Kong-Macao Joint Laboratory for Environmental Pollution and Control, Guangzhou Institute of Geochemistry, Chinese Academy of Sciences, Guangzhou 510640, China; CAS Center for Excellence in Deep Earth Science, Guangzhou 510640, China.
| | - Gan Zhang
- State Key Laboratory of Organic Geochemistry and Guangdong-Hong Kong-Macao Joint Laboratory for Environmental Pollution and Control, Guangzhou Institute of Geochemistry, Chinese Academy of Sciences, Guangzhou 510640, China; CAS Center for Excellence in Deep Earth Science, Guangzhou 510640, China
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Otim O, Beck MW. Multivariate Analysis of Sediment Toxicity in an Ocean Ecosystem: A Southern California Bight Case Study. Environ Sci Technol 2021; 55:12116-12125. [PMID: 34383475 DOI: 10.1021/acs.est.1c03032] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
Contaminated sediments can negatively affect aquatic organisms and beneficial uses of coastal regions. Monitoring programs typically collect many indicators of sediment toxicity, yet multivariate approaches that comprehensively evaluate data across heterogeneous spatial environments are frequently not performed. In this paper, we explore a multivariate approach to show that a list of suspected drivers of sediment toxicity to native Mytilus galloprovincialis (mussel) and Eohaustorius estuarius (a marine amphipod) population can be narrowed down without excluding samples, and that redundancies in sampling sites can be identified and isolated. Using a 153 × 28 data matrix assembled from a southern California-wide bight monitoring program, we demonstrate by this approach that Port of Los Angeles (PLA) and San Diego Bay (SDB) contained the most toxic sediments in the bight in 2008, the nature of which was unique to each locality. (Note: Little toxicity was observed here in 2013 and 2018.) In PLA sediments, mussels were more affected than amphipods, with higher survivability associated with low Hg and Sn levels. Conversely, amphipods had higher mortality than mussel embryos in SDB sediments, with higher survivability associated with low Be and Co levels. Nitrogen, organic content, and finer sediment particles were not related to the survivability of these organisms.
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Affiliation(s)
- Ochan Otim
- Environmental Monitoring Division, City of Los Angeles, Playa Del Rey, California 90293, United States
| | - Marcus W Beck
- Tampa Bay Estuary Program, St. Petersburg, Florida 33701, United States
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Lepistö A, Räike A, Sallantaus T, Finér L. Increases in organic carbon and nitrogen concentrations in boreal forested catchments - Changes driven by climate and deposition. Sci Total Environ 2021; 780:146627. [PMID: 34030343 DOI: 10.1016/j.scitotenv.2021.146627] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/04/2021] [Revised: 02/26/2021] [Accepted: 03/16/2021] [Indexed: 06/12/2023]
Abstract
Brownification, caused by increasing dissolved organic carbon (DOC) concentrations is a threat to aquatic ecosystems over large areas in Europe. The increasing concentrations of DOC in northern boreal streams and lakes have attracted considerable attention with proposed important drivers such as climate, deposition and land-use, and complex interactions between them. Changes in total organic N (TON) concentrations have received less attention, even though carbon and nitrogen losses are highly related to each other. We used long-term (1990-2019) monitoring records of 12 small data-rich headwater forested catchments in a large gradient of climate and deposition. We found that total organic carbon (TOC) concentrations were significantly increasing in almost all study catchments. The mean air temperature and change in sulphate concentrations had a strong, significant correlation to TOC change-%. Both explained, alone, more than 65% of the change in TOC concentrations, and, together, up to 83% of the variation. Sulphur deposition has already decreased to low levels, our results indicate that its importance as a driver of TOC leaching has decreased but is still clearly detected, while the impact of climate warming as a driver of TOC leaching will be even more pronounced in the future. A positive correlation was found between drainage-% and increases in TON, suggesting also importance of land management. TON trends were tightly connected to changes in TOC, but not directly linked to decreasing S deposition.
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Affiliation(s)
- Ahti Lepistö
- Finnish Environment Institute SYKE, Latokartanonkaari 11, FI-00790 Helsinki, Finland.
| | - Antti Räike
- Finnish Environment Institute SYKE, Latokartanonkaari 11, FI-00790 Helsinki, Finland
| | - Tapani Sallantaus
- Finnish Environment Institute SYKE, Latokartanonkaari 11, FI-00790 Helsinki, Finland
| | - Leena Finér
- Natural Resources Institute Finland, Yliopistokatu 6b, FI 80 100 Joensuu, Finland
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Babel S, Sekartaji PA, Sudrajat H. ZnO nanoparticles for photodegradation of humic acid in water. Environ Sci Pollut Res Int 2021; 28:31163-31173. [PMID: 33595799 DOI: 10.1007/s11356-021-12977-9] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/18/2020] [Accepted: 02/10/2021] [Indexed: 06/12/2023]
Abstract
Humic acid (HA) is the most important precursor of toxic disinfection byproducts upon chlorination. Removing HA from water body is therefore critical in drinking water acquisition. In this research, ZnO nanoparticles are employed for photocatalysis under UV light at neutral pH to remove HA from a water environment. Almost 100% degradation of HA was achieved using 0.3 g/L of ZnO in 180 min with UV-A and UV-C light. Under identical experimental conditions, total organic carbon (TOC) removals reach 67% and 21% with UV-A and UV-C light, respectively. A higher degree of mineralization of HA is achieved with UV-A light although the degradation of HA is slightly better with UV-C light. This indicates that ZnO/UV-A has relatively low selectivity to degrade different compounds, including various intermediates from HA degradation. The use of UV-A light is therefore recommended for ZnO as it possesses higher mineralization ability. Negligible TOC is observed on the ZnO surface after photocatalytic reactions. In contrast, the adsorption of HA in dark conditions reaches 42% in 180 min. This strongly indicates that the adsorption of HA plays an important role in the photocatalytic degradation of HA, but it is not the main process for HA removal.
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Affiliation(s)
- Sandhya Babel
- School of Biochemical Engineering and Technology, Sirindhorn International Institute of Technology, Thammasat University, P.O. Box 22, Pathum Thani, 12121, Thailand.
| | - Putri A Sekartaji
- School of Biochemical Engineering and Technology, Sirindhorn International Institute of Technology, Thammasat University, P.O. Box 22, Pathum Thani, 12121, Thailand
| | - Hanggara Sudrajat
- PhotoCAT - The Center of Excellence on Heterogeneous Photocatalysis, Department of Chemical Engineering, Faculty of Engineering, Universitas Jember, Jember, 68121, Indonesia
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35
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Yang H, Graham NJD, Wang W, Liu M, Yu W. Evaluating and improving the reliability of the UV-persulfate method for the determination of TOC/DOC in surface waters. Water Res 2021; 196:116918. [PMID: 33765497 DOI: 10.1016/j.watres.2021.116918] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/06/2020] [Revised: 02/04/2021] [Accepted: 02/07/2021] [Indexed: 06/12/2023]
Abstract
The UV-persulfate oxidation method is widely used for determining the total organic carbon concentration of aqueous samples (denoted for convenience as UVP-TOC). However, for some surface water samples, the measurement of TOC by this method can be unreliable, deviating significantly from the true carbon content. In this study, the performance of the UVP-TOC method has been investigated by comparing the results from the analysis of a variety of aqueous samples that included two kinds of surface water samples and related surface water model substances: bovine serum albumin (BSA), sodium alginate (SA), humic acid (HA), tannic acid (TA), benzoic acid (BA) and citric acid (CA), with those from a high-temperature combustion method (elemental analysis); the latter providing the true carbon content value. By comparing the above data, it was found that the UVP-TOC method significantly underestimated the TOC value of the surface water samples, and it was also found that the model components BSA (protein) and HA (humic substances, HS) had a substantial influence on the TOC underestimation, while the SA (polysaccharide), TA (complex organic molecule) and CA/BA (small molecules) had little effect. The results showed that the agglomeration within and between BSA and HA molecules was an important reason for the inaccurate UVP-TOC values of BSA and HA. A further limitation was that for BSA, surfactants (e.g. sodium dodecylbenzene sulfonate, SDBS) and other surfactant-like substances, foam was formed during the CO2 removal purging process by N2 that seriously interfered with the determination of TOC. The study provides new information and insight into the causes of inaccuracies in the UVP-TOC analysis of surface waters and possible approaches to improve the accuracy.
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Affiliation(s)
- Hankun Yang
- State Key Laboratory of Environmental Aquatic Chemistry, Key Laboratory of Drinking Water Science and Technology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China
| | - Nigel J D Graham
- Department of Civil and Environmental Engineering, Imperial College London, South Kensington Campus, London SW7 2AZ, United Kingdom
| | - Wenyu Wang
- State Key Laboratory of Environmental Aquatic Chemistry, Key Laboratory of Drinking Water Science and Technology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China; State Key Laboratory of Separation Membrane and Membrane Processes, School of Environmental Science and Engineering, Tiangong University, Tianjin 300387, China
| | - Mengjie Liu
- State Key Laboratory of Environmental Aquatic Chemistry, Key Laboratory of Drinking Water Science and Technology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China
| | - Wenzheng Yu
- State Key Laboratory of Environmental Aquatic Chemistry, Key Laboratory of Drinking Water Science and Technology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China.
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36
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Adeogun AI, Bhagawati PB, Shivayogimath CB. Pollutants removals and energy consumption in electrochemical cell for pulping processes wastewater treatment: Artificial neural network, response surface methodology and kinetic studies. J Environ Manage 2021; 281:111897. [PMID: 33385904 DOI: 10.1016/j.jenvman.2020.111897] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/25/2020] [Revised: 12/20/2020] [Accepted: 12/21/2020] [Indexed: 06/12/2023]
Abstract
Response surface methodology (RSM) and artificial neural network (ANN) were used for modelling the electrocoagulation removal of pollutants from wastewater from pulping processes. The Design of Experiment based on central composite design was used to investigate the combine effects of pH (5.4-9.0), time (10-45 min) and current density (j) (9-39 mA/m2), on the removal efficiency of the Chemical Oxygen Demand (COD), Total Dissolve Solids (TDS) as well as Turbidity while Energy consumption (EC) was estimated per kg [COD] removed. The kinetics of the process was modelled with pseudo first and second order models. The removability of the COD, TDS and Turbidity were found to be 76.4, 57.0 and 97.13% with Energy consumption of 2.72 kWh/kg[COD] at optimal pH 6.83, current density of 22.06 mA/m2, and reaction time of 45 min. The ANN model gave a better fitting of the electrocoagulation process than the RSM, considering the R2 of 0.999 and MSE of 0.00753 obtained for the former. The pseudo first order model gave a better analysis of the kinetic data. The characterization of the sludge produced showed the potential of its use as adsorbent for organic or mineral contaminants and recovery of aluminium and other metals. Thus, electrocoagulation with monopolar aluminium electrodes displayed effective and a viable alternative for the pollutants removal from pulp processing wastewater.
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Affiliation(s)
- Abideen Idowu Adeogun
- Chemistry Department, Federal University of Agriculture, PMB 2240, Abeokuta, Nigeria
| | - P B Bhagawati
- Civil Engineering Departments, Annasaheb Dange College of Engineering and Technology, Ashta, Maharashtra, 416301, India.
| | - C B Shivayogimath
- Civil Engineering Department, Basaveshwar Engineering College, Bagalkot, Karnataka, 587102, India
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37
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Vasu D, Navaneetha Pandiyaraj K, Padmanabhan PVA, Pichumani M, Deshmukh RR, Jaganathan SK. Degradation of simulated Direct Orange-S (DO-S) textile effluent using nonthermal atmospheric pressure plasma jet. Environ Geochem Health 2021; 43:649-662. [PMID: 31679080 DOI: 10.1007/s10653-019-00446-9] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/02/2019] [Accepted: 10/09/2019] [Indexed: 06/10/2023]
Abstract
One of the major environmental issues of textile industries is the discharge of large quantities of textile effluents, which are source of contamination of water bodies on surface of earth and quality of groundwater. The effluents are toxic, non-biodegradable, carcinogenic and prodigious threats to human and aquatic creatures. Since textile effluents can be treated efficiently and effectively by various advanced oxidation processes (AOPs). Among the various AOPs, cold atmospheric pressure plasma is a promising method among many prominent techniques available to treat the effluents. In this paper, we report about the degradation of simulated effluent, namely Direct Orange-S (DO-S) aqueous solution, using nonthermal atmospheric pressure plasma jet. The plasma treatment of DO-S aqueous solution was carried out as a function of various operating parameters such as potential and treatment time. The change in properties of treated DO-S dye was investigated by means of various analytical techniques such as high-performance liquid chromatography, UV-visible (UV-Vis) spectroscopy and determination of total organic content (TOC). The reactive species present in the samples were identified using optical emission spectrometry (OES). OES results confirmed that the formation of reactive oxygen and nitrogen species during the plasma treatment in the liquid surface was responsible for dye oxidation and degradation. Degradation efficiency, as monitored by color removal efficiency, of 96% could be achieved after 1 h of treatment. Concurrently, the TOC values were found to decrease with plasma treatment, implying that the plasma treatment process enhanced the non-toxicity nature of DO-S aqueous solution. Toxicity of the untreated and plasma-treated dye solution samples was studied using Escherichia coli (E. coli) and Staphylococcus (S. aureus) organisms, which demonstrated that the plasma-treated dye solution was non-toxic in nature compared with untreated one.
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Affiliation(s)
- D Vasu
- Research Division of Plasma Processing (RDPP), Department of Physics, Sri Shakthi Institute of Engineering and Technology, L&T Bypass, Chinniyam Palayam (Post), Coimbatore, 641062, India
| | - K Navaneetha Pandiyaraj
- Research Division of Plasma Processing (RDPP), Department of Physics, Sri Shakthi Institute of Engineering and Technology, L&T Bypass, Chinniyam Palayam (Post), Coimbatore, 641062, India.
| | - P V A Padmanabhan
- Research Division of Plasma Processing (RDPP), Department of Physics, Sri Shakthi Institute of Engineering and Technology, L&T Bypass, Chinniyam Palayam (Post), Coimbatore, 641062, India
| | - M Pichumani
- Department of Nanoscience and Nanotechnology, Sri Ramakrishna Engineering College, Coimbatore, 641022, India
| | - R R Deshmukh
- Department of Physics, Institute of Chemical Technology, Matunga, Mumbai, 400019, India
| | - S K Jaganathan
- Department of Engineering, Faculty of Science and Engineering, University of Hull, Hull, HU6 7RX, UK
- IJNUTM Cardiovascular Engineering Centre, School of Biomedical Engineering and Health Science, Faculty of Engineering, Universiti Teknologi Malaysia, Skudai, 81310, Malaysia
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Adewoye T, Ogunleye O, Abdulkareem A, Salawudeen T, Tijani J. Optimization of the adsorption of total organic carbon from produced water using functionalized multi-walled carbon nanotubes. Heliyon 2021; 7:e05866. [PMID: 33458443 PMCID: PMC7797377 DOI: 10.1016/j.heliyon.2020.e05866] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2020] [Revised: 10/23/2020] [Accepted: 12/23/2020] [Indexed: 01/18/2023] Open
Abstract
This study investigated the removal of Total Organic Carbon (TOC) from produced water by batch adsorption process using adsorbents developed from Multi-Walled Carbon Nanotubes (MWCNTs). The MWCNTs, synthesized by catalytic chemical vapour deposition method using kaolin-supported tri-metallic (iron-cobalt-nickel) catalyst were purified by H2SO4/HNO3 and then functionalized with 1-pyrenebutanoic acid N-hydroxyl succinimidyl ester (PSE). The raw, purified and functionalized MWCNTs were characterized by High Resolution Scanning Electron Microscopy (HRSEM), High Resolution Transmission Electron Microscopy (HRTEM), Brunauer-Emmett-Teller (BET) and Fourier Transform Infrared Spectroscopy (FTIR). In the results, HRSEM/HRTEM revealed the structure, purity and also confirmed the attachment of the PSE molecule onto the nano-adsorbent(s). The BET surface areas of MWCNTs, PMWCNTs and FMWCNTs were 970.17, 869.25 and 831.80 m2/g, respectively while the FTIR established the existence of surface functional groups. The functionalized MWCNTs (FMWCNTs) nano-adsorbent showed superior performance efficiency (93.6%) than the purified MWCNTs (PMWCNTs) (79.2%) as examined under the same batch adsorption condition: 0.02 g adsorbent dosage, 10-90 min contact time and 30 °C solution temperature probably, due the improved wettability resulted from incorporation of PSE. Subsequently, Central Composite Design (CCD) was applied to optimize the process parameters for the sorption of TOC onto FMWCNTs. The CCD in the response surface methodology predicted 260 mg/g adsorption capacity of FMWCNTs in the removal of TOC at the optimum condition of 49.70 min contact time, 34.81 °C solution temperature, and 0.02 g adsorbent dosage. The kinetics data were best described by pseudo-second-order model and thermodynamic parameters suggested that the process was feasible, spontaneous and exothermic. It can be inferred from the various analysis conducted that the developed FMWCNTs nano-adsorbent is effective for removal of TOC from oil-produced water and may be explored for removal of organic contaminants from other industrial wastewater.
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Affiliation(s)
- T.L. Adewoye
- Department of Chemical Engineering, University of Ilorin, PMB 1515 Ilorin, Kwara State, Nigeria
- Nanotechnology Research Group, Africa Centre of Excellence for Mycotoxin & Food Safety, Federal University of Technology, PMB 65 Minna, Niger State, Nigeria
| | - O.O. Ogunleye
- Department of Chemical Engineering, Ladoke Akintola University of Technology, PMB 4000, Ogbomoso, Oyo State, Nigeria
| | - A.S. Abdulkareem
- Department of Chemical Engineering, Federal University of Technology, PMB 65 Minna, Niger State, Nigeria
- Nanotechnology Research Group, Africa Centre of Excellence for Mycotoxin & Food Safety, Federal University of Technology, PMB 65 Minna, Niger State, Nigeria
| | - T.O. Salawudeen
- Department of Chemical Engineering, Ladoke Akintola University of Technology, PMB 4000, Ogbomoso, Oyo State, Nigeria
| | - J.O. Tijani
- Department of Chemistry, Federal University of Technology, PMB 65 Minna, Niger State, Nigeria
- Nanotechnology Research Group, Africa Centre of Excellence for Mycotoxin & Food Safety, Federal University of Technology, PMB 65 Minna, Niger State, Nigeria
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Orozco A, Cardoner N, Aragón CF, Ruiz-Murugarren S, Vicens M, Álvarez-Mon MÁ, Lahera G. Obsessive-compulsive symptoms in anxiety and depressive disorders: Influence of recent and/or traumatic life events. Rev Psiquiatr Salud Ment (Engl Ed) 2020; 14:S1888-9891(20)30129-4. [PMID: 33359119 DOI: 10.1016/j.rpsm.2020.12.002] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/30/2020] [Revised: 12/02/2020] [Accepted: 12/03/2020] [Indexed: 11/22/2022]
Abstract
INTRODUCTION A high prevalence of obsessive-compulsive symptoms (OCSs) in anxiety-depressive disorders ranging from 30 to 67% has been described. OBJECTIVE This study aims to assess the presence and persistence of OCSs in an outpatient sample of subjects with anxiety and depressive disorders, as well as its relationship with recent life events (RLEs) and/or traumatic experiences (TEs). METHOD We conducted a prospective, observational, analytical study of 200 subjects with DSM-5 diagnoses of anxiety and/or depression. Participants were included by consecutive sampling and were evaluated at baseline and after 6-12 months (mean 8.5 months) of follow-up. The severity of the symptoms was assessed through the Hamilton Anxiety Scale (HARS) and Hamilton Scale for the evaluation of depression (HRSD-17), and comorbidity was assessed through the International Neuropsychiatric Interview (MINI). The Revised Inventory of Obsessions and Compulsions (OCI-R), the Recent Vital Changes Questionnaire (CVSV), and the Diagnostic Scale for Post-Traumatic Stress (PDS) were also administered. RESULTS 54% of the sample presented OCSs, and 30.5% presented one or more TEs throughout life. At the baseline visit, the presence of OCSs was associated with the severity of depressive symptoms (p=0.028), the presence of TEs (p<0.01), symptoms of post-traumatic stress disorder (p<0.01) and the number of RLEs (p<0.01). Response rate at follow-up was 38%, and persistence of OCSs was found in 60.5% of patients, independent of depressive or anxious symptoms, but was associated with the number of RLEs (p<0.01). CONCLUSION The presence of OCSs in patients with anxiety and depressive disorders is frequent and persistent. Anxious-depressive patients with a history of TEs and RLEs had higher OCS levels. These findings highlight the importance of early detection and the use of therapeutic strategies focused on resilience to stress and trauma.
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Affiliation(s)
- Arantxa Orozco
- Príncipe de Asturias University Hospital, Alcalá, Madrid, Spain
| | - Narcís Cardoner
- Hospital Universitario Parc Taulí Sabadell, Barcelone, Spain
| | | | | | - María Vicens
- Príncipe de Asturias University Hospital, Alcalá, Madrid, Spain
| | - Miguel Ángel Álvarez-Mon
- Faculty of Medicine, University of Alcalá, Madrid, Spain; Infanta Leonor Hospital, Madrid, Spain
| | - Guillermo Lahera
- Príncipe de Asturias University Hospital, Alcalá, Madrid, Spain; Faculty of Medicine, University of Alcalá, Madrid, Spain; Centre for Biomedical Research in Mental Health (CIBERSAM), Madrid, Spain.
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Gomes RM, Baptista RDO, de Almeida EL, Batista ACG, de Souza EC. Yield loss during bleaching of pulp of Pinus radiata previously delignified with oxygen. Environ Sci Pollut Res Int 2020; 27:43403-43411. [PMID: 33011942 DOI: 10.1007/s11356-020-11030-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/22/2020] [Accepted: 09/27/2020] [Indexed: 06/11/2023]
Abstract
The pulp bleaching process removes or transforms the chromophore groups in the pulp, so that the final product reaches a desired brightness. However, this chemical treatment inevitably results in yield loss. Therefore, the objective of this work was to quantify the yield loss caused during the bleaching of kraft pulp of Pinus radiata delignified with oxygen. The material was submitted to three distinct ECF sequences (D0(EPO)D1D2, D0(EPO)D1P, and Z/EDP). At the end of each bleaching stage, the pulp brightness and the loss of gravimetric yield of the process were determined, and the generated filtrates were collected. From these filtrates, the pollutant load of the effluent was determined by measuring the content of total dissolved solids, the chemical oxygen demand, the concentration of total organic carbon carbon, and the adsorbable organic halogens. Among the whole sequences, the Z/EDP sequence had the lowest gravimetric yield, the highest pollutant load in the collected filtrate, and lowest potential for adsorbable organic halogens generation. There was good correlation between the loss of yield from the bleaching process and the organic load of the generated effluent; and among the techniques studied, the quantification of total organic carbon was the most appropriate method for the indirect quantification of the yield loss during the bleaching process of the studied material.
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Affiliation(s)
- Regina Maria Gomes
- Forest Sciences Department, "Luiz de Queiroz" College of Agriculture, University of São Paulo (ESALQ/USP), Avenida Pádua Dias, 11 Cx. P. 9 13, Piracicaba, SP, 418-900, Brazil
| | - Renato de Oliveira Baptista
- Forest Sciences Department, "Luiz de Queiroz" College of Agriculture, University of São Paulo (ESALQ/USP), Avenida Pádua Dias, 11 Cx. P. 9 13, Piracicaba, SP, 418-900, Brazil
| | - Eduardo Leite de Almeida
- Forest Sciences Department, "Luiz de Queiroz" College of Agriculture, University of São Paulo (ESALQ/USP), Avenida Pádua Dias, 11 Cx. P. 9 13, Piracicaba, SP, 418-900, Brazil
| | - Ana Claudia Gama Batista
- Forest Sciences Department, "Luiz de Queiroz" College of Agriculture, University of São Paulo (ESALQ/USP), Avenida Pádua Dias, 11 Cx. P. 9 13, Piracicaba, SP, 418-900, Brazil
| | - Elias Costa de Souza
- Forest Sciences Department, "Luiz de Queiroz" College of Agriculture, University of São Paulo (ESALQ/USP), Avenida Pádua Dias, 11 Cx. P. 9 13, Piracicaba, SP, 418-900, Brazil.
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Glauser A, Morf LS, Weibel G, Eggenberger U. Ten-years monitoring of MSWI bottom ashes with focus on TOC development and leaching behaviour. Waste Manag 2020; 117:104-113. [PMID: 32829004 DOI: 10.1016/j.wasman.2020.07.038] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/19/2019] [Revised: 06/13/2020] [Accepted: 07/28/2020] [Indexed: 06/11/2023]
Abstract
In Switzerland MSWI bottom ash has to comply with the legal threshold value for TOC of < 2 wt-% in order to be landfilled. However, TOC contents of this magnitude lead to elevated DOC emissions and associated emissions of ammonium and Cu (aq). Since 2008 the Canton of Zürich therefore pursues a strategy to lower TOC contents in bottom ash by 2020 to 0.5 wt-%. To observe the development of TOC and other constituents, bottom ash has been monitored from 2008 to 2018. Monitoring results indicate that TOC contents < 0.5 wt-% in bottom ash lead to DOC eluate concentrations < 20 mg/l. DOC concentrations of this magnitude are close to Swiss legal criteria for discharge of landfill leachate into surface waters (10 mg/l). The emission results have been obtained by batch eluate tests according to Swiss Waste Legislation. Such laboratory tests only partially simulate real conditions occurring on landfills. To approximate landfill conditions, column tests with recent bottom ashes combined with tests on simple emission forecasting complete the study. The comparison of results from batch and column tests shows similar cumulative concentrations, indicating that batch tests are suitable to evaluate bottom ash quality. The tested modelling approach, based on constant conditions and exponential decrease in concentration, proved adequate to simulate column progressions. The modelled emission forecasts for DOC lies within 33% of column test results. Further, the model demonstrates the differences in flow regime between eluate tests and landfills and promotes better understanding of temporal aspects and the influence of landfill relevant parameters on pollutant mobilisation.
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Affiliation(s)
| | - Leo S Morf
- Baudirektion Kanton Zürich, Amt für Abfall, Wasser, Energie und Luft, Zürich, Switzerland
| | - Gisela Weibel
- Institut für Geologie, Universität Bern, Switzerland; Zentrum für nachhaltige Abfall-und Ressourcennutzung ZAR, Hinwil, Switzerland
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Salinas ER, Bozich JS, Kolbenschlag S, Kary-Heinrich M, Hopp PW, Lukas R, Zok S, Hidding B. Aquatic testing guidelines insufficiently control the influence of dilution water toc and hardness on cationic polymer toxicity - A proposal to improve standardized test procedures. Chemosphere 2020; 259:127473. [PMID: 32622247 DOI: 10.1016/j.chemosphere.2020.127473] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/07/2020] [Revised: 06/10/2020] [Accepted: 06/16/2020] [Indexed: 06/11/2023]
Abstract
Cationic polymers (CPs) are widely used chemicals for wastewater treatment applications and in various "down-the-drain" household products. The aquatic toxicity of CPs results from an electrostatic interaction with negatively charged cell surfaces. These effects are greatly mitigated by the binding affinity of CPs to total organic carbon (TOC) in surface water. Consequently, baseline aquatic toxicity tests of CPs using clean lab water (TOC < 2 mg/L) typically overestimate toxicity and risk which is greatly mitigated at higher environmentally relevant OC levels. However, the point at which mitigation begins is not well defined and low-level TOC in lab water may influence the baseline toxicity outcome. Similarly, divalent cations, quantified as water hardness, may modulate the electrostatic binding between OC and CP. Although standard guidelines define limits for lab water hardness and TOC, the consequences of variability within those limits on test outcome is unknown. We investigated the impact of part-per-billion (ppb) additions of TOC to lab water at different hardness levels on CP acute toxicity to Daphnia magna and Raphidocelis subcapitata. In both species, the acute toxicities of CPs with different molecular weight and charge density varied by > 10-fold in response to slight changes in TOC and water hardness, although parameters were maintained within guideline limits. When determining the baseline aquatic toxicity of CPs, the lab water should be standardized at the lowest biologically tolerable hardness and TOC at a reliably measurable level (>1 - < 2 mg/L) to reduce variability and increase the reliability of the toxicity estimate.
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Affiliation(s)
- Edward R Salinas
- Experimental Ecotoxicology, BASF SE, Carl-Bosch-Strasse 38, 67056, Ludwigshafen, Germany.
| | - Jared S Bozich
- Experimental Ecotoxicology, BASF SE, Carl-Bosch-Strasse 38, 67056, Ludwigshafen, Germany
| | - Sara Kolbenschlag
- Experimental Ecotoxicology, BASF SE, Carl-Bosch-Strasse 38, 67056, Ludwigshafen, Germany
| | - Miriam Kary-Heinrich
- Experimental Ecotoxicology, BASF SE, Carl-Bosch-Strasse 38, 67056, Ludwigshafen, Germany
| | - Philipp W Hopp
- Regulatory Ecotoxicology, BASF Personal Care and Nutrition GmbH, Henkelstrasse 67, 40589, Düsseldorf, Germany
| | - Rüdiger Lukas
- Product Stewardship, BASF SE, Carl-Bosch-Strasse 38, 67056, Ludwigshafen, Germany
| | - Sabine Zok
- Experimental Ecotoxicology, BASF SE, Carl-Bosch-Strasse 38, 67056, Ludwigshafen, Germany
| | - Björn Hidding
- Experimental Ecotoxicology, BASF SE, Carl-Bosch-Strasse 38, 67056, Ludwigshafen, Germany
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Mukherjee A, Mullick A, Teja R, Vadthya P, Roy A, Moulik S. Performance and energetic analysis of hydrodynamic cavitation and potential integration with existing advanced oxidation processes: A case study for real life greywater treatment. Ultrason Sonochem 2020; 66:105116. [PMID: 32252011 DOI: 10.1016/j.ultsonch.2020.105116] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/21/2019] [Revised: 03/29/2020] [Accepted: 03/29/2020] [Indexed: 05/27/2023]
Abstract
The current work is a "first of a kind" report on the feasibility and efficacy of hydrodynamic cavitation integrated Advanced Oxidation Processes (AOP's) towards treatment of a real life greywater stream in form of kitchen wastewater. The work has been carried out in a sequential manner starting with geometry optimization of orifice plate (cavitating device) followed by studying the effects of inlet pressure, pH, effluent dilution ratio on degradation of TOC and COD. Under optimized conditions of pH 3, 4 bar pressure, TOC and COD reduction of 18.23 and 25% were obtained using HC for a period of 120 min. To improve the performance of HC, further studies were carried out by integrating H2O2and O3with HC. Using 5 g/h optimum dosage of H2O2, 87.5% reduction in COD was obtained beyond which it started decreasing. Moreover, integrating O3(57.5% reduction in COD) increased the treatment cost. However, a hybrid process (HC + H2O2 + O3) yielded 76.26 and 98.25% reductions in TOC and COD within60 min.The energetics of all the processes and the treatment costs were studied in detail and it was concluded that combined process of HC + H2O2 + O3surpassed by far the performances of HC + H2O2and HC + O3.
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Affiliation(s)
- Anupam Mukherjee
- Centre of Excellence in Process Engineering & Intensification (COE-PE&I), Department of Chemical Engineering Goa, BITS Pilani, Goa 403726, India
| | - Aditi Mullick
- Cavitation and Dynamics Lab, Department of Process Engineering & Technology Transfer, CSIR-Indian Institute of Chemical Technology, Hyderabad 500007, India
| | - Ravi Teja
- Cavitation and Dynamics Lab, Department of Process Engineering & Technology Transfer, CSIR-Indian Institute of Chemical Technology, Hyderabad 500007, India
| | - Pavani Vadthya
- Cavitation and Dynamics Lab, Department of Process Engineering & Technology Transfer, CSIR-Indian Institute of Chemical Technology, Hyderabad 500007, India
| | - Anirban Roy
- Centre of Excellence in Process Engineering & Intensification (COE-PE&I), Department of Chemical Engineering Goa, BITS Pilani, Goa 403726, India.
| | - Siddhartha Moulik
- Cavitation and Dynamics Lab, Department of Process Engineering & Technology Transfer, CSIR-Indian Institute of Chemical Technology, Hyderabad 500007, India.
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Liu H, Fang L, Wang J, Lin C. Supercritical water oxidation of p-aminonaphthalenesulfonic acid and enhancement by Fenton agent. Environ Technol 2020; 41:2494-2499. [PMID: 30653403 DOI: 10.1080/09593330.2019.1571115] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/02/2018] [Accepted: 01/13/2019] [Indexed: 06/09/2023]
Abstract
The introduction of Fe2+ into supercritical water oxidation (SCWO) and the formation of Fenton reagent with oxidant H2O2 form a new environment, namely, supercritical Fenton oxidation (SCFO) environment. p-Aminonaphthalenesulfonic acid was selected as the typical organic pollutant to explore the effects of temperature, oxidant multiple, reaction time and Fenton conditions on the TOC removal rate. SCFO showed the superiority in the degradation of organic matter compared with the SCWO. The oxidative degradation kinetics of p-aminonaphthalenesulfonic acid in SCFO environment was further explored. Under SCFO condition, the oxidative degradation of p-aminonaphthalene sulfonic acid was consistent with first-order reaction kinetics. The results showed that the activation energy Ea and pre exponential factor k 0 were 39.937 kJ·mol-1 and 1.94 × 104 s-1 respectively.
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Affiliation(s)
- Huan Liu
- College of Environment, Zhejiang University of Technology, Hangzhou, People's Republic of China
| | - Lin Fang
- College of Environment, Zhejiang University of Technology, Hangzhou, People's Republic of China
| | - Junliang Wang
- College of Environment, Zhejiang University of Technology, Hangzhou, People's Republic of China
| | - Chunmian Lin
- College of Environment, Zhejiang University of Technology, Hangzhou, People's Republic of China
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Khabouchi I, Khadhar S, Driouich Chaouachi R, Chekirbene A, Asia L, Doumenq P. Study of organic pollution in superficial sediments of Meliane river catchment area: aliphatic and polycyclic aromatic hydrocarbons. Environ Monit Assess 2020; 192:283. [PMID: 32285216 DOI: 10.1007/s10661-020-8213-6] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/10/2019] [Accepted: 03/16/2020] [Indexed: 06/11/2023]
Abstract
Organic contaminants can be accumulated in aquatic systems even at trace concentrations with potential threats to the environment and human health. The present study has been performed to evaluate the effects of organochlorines and polyaromatic hydrocarbons on surface sediments of the Meliane river catchment. Their determination provides an essential scientific approach for a better understanding of the expected sources and the processes of bioaccumulation. The concentrations of saturated hydrocarbons in extractable organic matter of the dry sediment were found ranging from 0.58 to 3 83 μg kg-1 and PAHs content ranged from 63 to 131 μg kg-1. These results indicated the adherence of Oued Meliane to the pollution of the Tunis Gulf. The fraction of saturated hydrocarbons extracted from the sediments of Oued Meliane included a majority of organic compounds of biogenic nature with a small oil input. In addition, characterization with the TAR index and the LMW/HMW index confirmed that terrigenous inputs in this fraction are more abundant than aquatic inputs. The characterization of PAHs fraction has shown its pyrolitic origin with a predominance of high molecular weight PAHs.
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Affiliation(s)
- Imen Khabouchi
- LR Environmental Chemistry, Campus Arbois: Europole de l'Arbois Aix en Provence, Aix Marseille University, Marseille, France
- LR Biotechnology and Bio-Geo Resources Valorization (LR11ES31), Higher Institute for Biotechnology - University of Manouba-Biotechpole of Sidi Thabet, Sidi Thabet, 2020, Ariana, Tunisia
| | - Samia Khadhar
- LR Water Researches and Technologies Center, Borj-Cedria, TechnoPark, 273-8020, Soliman, Tunisia.
| | - Rim Driouich Chaouachi
- LR Environmental Chemistry, Campus Arbois: Europole de l'Arbois Aix en Provence, Aix Marseille University, Marseille, France
- LR Biotechnology and Bio-Geo Resources Valorization (LR11ES31), Higher Institute for Biotechnology - University of Manouba-Biotechpole of Sidi Thabet, Sidi Thabet, 2020, Ariana, Tunisia
| | - Anis Chekirbene
- LR Water Researches and Technologies Center, Borj-Cedria, TechnoPark, 273-8020, Soliman, Tunisia
| | - Laurence Asia
- LR Biotechnology and Bio-Geo Resources Valorization (LR11ES31), Higher Institute for Biotechnology - University of Manouba-Biotechpole of Sidi Thabet, Sidi Thabet, 2020, Ariana, Tunisia
| | - Pierre Doumenq
- LR Biotechnology and Bio-Geo Resources Valorization (LR11ES31), Higher Institute for Biotechnology - University of Manouba-Biotechpole of Sidi Thabet, Sidi Thabet, 2020, Ariana, Tunisia
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Cheng Z, Tang Y, Li E, Wu Q, Wang L, Liu K, Wang S, Huang Y, Duan L. Mercury accumulation in soil from atmospheric deposition in temperate steppe of Inner Mongolia, China. Environ Pollut 2020; 258:113692. [PMID: 31818621 DOI: 10.1016/j.envpol.2019.113692] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/27/2019] [Revised: 11/25/2019] [Accepted: 11/28/2019] [Indexed: 06/10/2023]
Abstract
Mercury (Hg) is a toxic and persistent pollutant and has long-term impacts on ecological systems and human health. Coal-fired power plants (CFPPs) are the main source of anthropogenic Hg emission, and the emitted atmospheric Hg is deposited to the surrounding environments which causes soil pollution. To assess the effects of atmospheric Hg from CFPPs in China on the temperate steppe, Hg contents in the topsoil and subsoil were analyzed for samples collected from 80 sites in central Inner Mongolia during 2012-2015. The average content of Hg in topsoil and subsoil were 14.9 ± 10.4 μg kg-1 and 8.9 ± 5.8 μg kg-1, respectively. The principal components analysis (PCA) indicated that the soil organic matter content and atmospheric deposition were the main factors determining soil Hg content in Inner Mongolia. We used the power plant impact factor (PPIF) to evaluate the impacts of the surrounding CFPPs. The PPIF results showed the most positive correlation with Hg content in topsoil at more than 400 km distances, indicating that the contribution of the long-range transport of Hg emitted from CFPPs is regional in scale. Considering the potential of Hg accumulation in soil, long-term and regional measurements of soil Hg and stricter emission-limit standards for power plants should be implemented to control soil Hg pollution in China.
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Affiliation(s)
- Zhenglin Cheng
- State Key Laboratory of Environmental Simulation and Pollution Control, School of Environment, Tsinghua University, Beijing 100084, China
| | - Yi Tang
- State Key Laboratory of Environmental Simulation and Pollution Control, School of Environment, Tsinghua University, Beijing 100084, China
| | - Engui Li
- College of Resources Science and Technology, Beijing Normal University, Beijing 100875, China
| | - Qingru Wu
- State Key Laboratory of Environmental Simulation and Pollution Control, School of Environment, Tsinghua University, Beijing 100084, China
| | - Long Wang
- School of Environmental and Energy, South China University of Technology, Guangzhou 510006, China
| | - Kaiyun Liu
- State Key Laboratory of Environmental Simulation and Pollution Control, School of Environment, Tsinghua University, Beijing 100084, China
| | - Shuxiao Wang
- State Key Laboratory of Environmental Simulation and Pollution Control, School of Environment, Tsinghua University, Beijing 100084, China
| | - Yongmei Huang
- College of Resources Science and Technology, Beijing Normal University, Beijing 100875, China
| | - Lei Duan
- State Key Laboratory of Environmental Simulation and Pollution Control, School of Environment, Tsinghua University, Beijing 100084, China.
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Mathew J, Gopinath A. Spatial and Temporal Variations of Arsenic Distribution in a Tropical Estuary Along the West Coast of India. Mar Pollut Bull 2019; 149:110567. [PMID: 31548170 DOI: 10.1016/j.marpolbul.2019.110567] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/13/2019] [Revised: 08/27/2019] [Accepted: 09/02/2019] [Indexed: 06/10/2023]
Abstract
Arsenic (As) contamination was studied and reported for the first time in the sediments of the Cochin estuary. Surface sediment samples were collected from twenty-seven stations encompassing the entire estuary constituting south, central and north estuary. The total As concentration varied from 0.01 mg/kg to 9.28 mg/kg and undetected to 23.37 mg/kg during the pre and post-monsoon. The degree of contamination assessed in terms of geochemical indices such as contamination factor (CF), geoaccumulation index (Igeo) and enrichment factor (EF) unraveled the As contamination to be meager. The application of risk index factor and sediment quality guidelines showed that the As concentration in the estuary is below the background concentration. Pearson correlation analysis of As with iron and TOC exhibited significant weak and poor correlations with these variables.
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Affiliation(s)
- Jose Mathew
- Department of Chemistry, St Albert's College, Kochi, India
| | - Anu Gopinath
- Kerala University of Fisheries and Ocean Studies, Kochi, India.
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48
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Lee JW, Lee HK, Moon HB. Contamination and spatial distribution of parabens, their metabolites and antimicrobials in sediment from Korean coastal waters. Ecotoxicol Environ Saf 2019; 180:185-191. [PMID: 31082583 DOI: 10.1016/j.ecoenv.2019.05.012] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/27/2019] [Revised: 05/01/2019] [Accepted: 05/05/2019] [Indexed: 06/09/2023]
Abstract
Synthetic antimicrobials known as parabens, triclosan (TCS), and triclocarban (TCC) are emerging environmental contaminants. Limited studies on these contaminants have been conducted in coastal environments. In our study, parabens, their metabolites, TCS, and TCC were measured in sediment collected along the Korean coast, to investigate contamination status, spatial distribution, and potential health risks to coastal environments. Methyl paraben and 4-hydroxybenzoic acid were detected in all sediment samples, suggesting widespread contamination. Total concentrations of parent parabens, their metabolites, TCS, and TCC ranged from 0.19 to 11.2 (mean: 2.40) ng/g dry weight, 9.65 to 480 (mean: 120) ng/g dry weight, and < limit of quantification (LOQ)-6.10 (mean: 0.41) ng/g dry weight, and from < LOQ-41.0 (mean: 2.78) ng/g dry weight, respectively. The overall contamination of parabens and antimicrobials in sediment was different from that reported for persistent organic pollutants due to different contamination sources among chemical groups. Significant correlation was found among target contaminants in sediment, suggesting the existence of a common source. Total organic carbon (TOC) was significantly correlated with the concentrations of target contaminants, implying a major factor for coastal distribution of parabens and antimicrobials. The concentrations of parabens and TCS measured in sediment did not exceed a hazard quotient (HQ), implying low potential health risks associated with exposure to these contaminants. This is the first study to report the nationwide distribution of parabens, their metabolites, and antimicrobials in the coastal environments of Korea.
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Affiliation(s)
- Jae-Won Lee
- Department of Marine Sciences and Convergent Technology, College of Science and Convergence Technology, Hanyang University, Ansan, 15588, Republic of Korea
| | - Hyun-Kyung Lee
- Department of Marine Sciences and Convergent Technology, College of Science and Convergence Technology, Hanyang University, Ansan, 15588, Republic of Korea
| | - Hyo-Bang Moon
- Department of Marine Sciences and Convergent Technology, College of Science and Convergence Technology, Hanyang University, Ansan, 15588, Republic of Korea.
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49
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Pan XY, Qiao XC. Influences of nitrite on paracetamol degradation in dielectric barrier discharge reactor. Ecotoxicol Environ Saf 2019; 180:610-615. [PMID: 31132556 DOI: 10.1016/j.ecoenv.2019.04.037] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/09/2019] [Revised: 04/07/2019] [Accepted: 04/11/2019] [Indexed: 06/09/2023]
Abstract
The frequent detection of paracetamol in natural water increased environmental concerns. The dielectric barrier discharge (DBD) technology is an effective paracetamol removing method, however, this research showed that the removal of paracetamol using DBD technology at 30 min dropped from 100% to 53.3% as the initial paracetamol concentration increased from 10 mg/L to 100 mg/L, due to the formation of more competitive intermediate products at higher paracetamol concentration. The removal of TOC was found to be much slower than that of paracetamol, as paracetamol was removed completely after 5 min treatment, the removal rate of TOC was 46.3% after 20 min treatment under 500 W discharge power and 50 mL/min air flow rate. The orthogonal experiment showed that the removal of TOC was significantly influenced by the treatment time, discharge power and recirculating flow rate, while less influenced by the discharge frequency. In the removal process of paracetamol, nitrite ion that generated during DBD treatment reacted with paracetamol to form an intermediate product of 3-nitro-4-acetamidophenol. The presence of nitrite ion retarded the removal of 3-nitro-4-acetamidophenol and thus the TOC, however, the nitrate ion did not. The degradation of paracetamol followed a sequence of 3-nitro-4-acetamidophenol, nitrosophenol/acetamide, N-methylacetamide, acetamide and small molecule organic acids in the DBD reactor, and these intermediates were finally oxidized to CO2, H2O and NO3-.
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Affiliation(s)
- Xiao-Yi Pan
- Resources and Environmental Engineering, East China University of Science and Technology, Shanghai, 200237, China
| | - Xiu-Chen Qiao
- Resources and Environmental Engineering, East China University of Science and Technology, Shanghai, 200237, China.
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50
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Xu H, Demetriades A, Reimann C, Jiménez JJ, Filser J, Zhang C. Identification of the co-existence of low total organic carbon contents and low pH values in agricultural soil in north-central Europe using hot spot analysis based on GEMAS project data. Sci Total Environ 2019; 678:94-104. [PMID: 31075607 DOI: 10.1016/j.scitotenv.2019.04.382] [Citation(s) in RCA: 25] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/22/2019] [Revised: 04/24/2019] [Accepted: 04/26/2019] [Indexed: 06/09/2023]
Abstract
Total organic carbon (TOC) contents in agricultural soil are presently receiving increased attention, not only because of their relationship to soil fertility, but also due to the sequestration of organic carbon in soil to reduce carbon dioxide emissions. In this research, the spatial patterns of TOC and its relationship with pH at the European scale were studied using hot spot analysis based on the agricultural soil results of the Geochemical Mapping of Agricultural Soil (GEMAS) project. The hot and cold spot maps revealed the overall spatial patterns showing a negative correlation between TOC contents and pH values in European agricultural soil. High TOC contents accompanying low pH values in the north-eastern part of Europe (e.g., Fennoscandia), and low TOC with high pH values in the southern part (e.g., Spain, Italy, Balkan countries). A special feature of co-existence of comparatively low TOC contents and low pH values in north-central Europe was also identified on hot and cold spot analysis maps. It has been found that these patterns are strongly related to the high concentration of SiO2 (quartz) in the coarse-textured glacial sediments in north-central Europe. The hot spot analysis was effective, therefore, in highlighting the spatial patterns of TOC in European agricultural soil and helpful to identify hidden patterns.
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Affiliation(s)
- Haofan Xu
- International Network for Environment and Health (INEH), School of Geography and Archaeology & Ryan Institute, National University of Ireland, Galway, Ireland.
| | | | - Clemens Reimann
- Geological Survey of Norway, P.O. Box 6315, Torgarden, N-7491 Trondheim, Norway.
| | - Juan J Jiménez
- ARAID Researcher, Pyrenean Institute of Ecology-National Spanish Research Council, IPE-CSIC, Av. Nuestra Señora de la Victoria 16, 22700 Jaca, (Huesca), Spain.
| | - Juliane Filser
- University of Bremen, UFT, Department of General and Theoretical Ecology, Leobener Str. 6, D - 28359 Bremen, Germany.
| | - Chaosheng Zhang
- International Network for Environment and Health (INEH), School of Geography and Archaeology & Ryan Institute, National University of Ireland, Galway, Ireland.
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