1
|
Chang X, Duan T, Feng J, Li YX. Contrasting fate and binding behavior of Mn and Cu with dissolved organic matter during in situ remediation using multicomponent capping in malodorous black water. WATER RESEARCH 2024; 253:121288. [PMID: 38359596 DOI: 10.1016/j.watres.2024.121288] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/10/2023] [Revised: 01/18/2024] [Accepted: 02/07/2024] [Indexed: 02/17/2024]
Abstract
The common use of peroxides in the remediation of malodorous black water may lead to the activation of heavy metals in sediment when eliminating black and odorous substances. The mechanisms of heavy metal interactions with dissolved organic matter (DOM) in response to in situ capping have not been elucidated, but this information could guide the optimization of capping materials. We developed a capping material consisting of hydrothermally carbonized sediment (HCS), hydrated magnesium carbonate (HMC) and sodium percarbonate (SPC) and used microcosm experiments to investigate the dynamics of Mn and Cu at the sediment-water interface in malodorous black water. The results showed that HCS, HMC and SPC contributed multiple functions of mechanical protection, chemical isolation and oxygen provision to the new caps. HMC promoted the conversion of Mn/Cu into carbonate minerals. The optimal mass proportions were 25 % HCS, 60 % HMC and 15 % SPC based on the mixture design. In situ capping altered the fate and transformation of metals in the sediment-overlying water profile in the short term through Mn immobilization and Cu activation. The complexation of Cu(II) ions was significantly stronger than that of Mn(II) ions. In situ capping had a significant effect on the order of complexation of different fluorescent DOM molecules with Mn(II)/Cu(II) ions: microbial byproducts and fulvic acid-like components were preferentially complexed with Cu(II) ions after capping, while phenolic and humic acid-like components preferentially interacted with Mn(II) ions. Humic-like components bound to Cu were affected the most by capping treatment, whereas protein-like components were relatively weakly affected. Our study provides valuable knowledge on the impact of in situ capping on DOM-metal complexes.
Collapse
Affiliation(s)
- Xuan Chang
- State Key Laboratory of Water Environment Simulation, School of Environment, Beijing Normal University, Beijing 100875, China
| | - Tingting Duan
- State Key Laboratory of Water Environment Simulation, School of Environment, Beijing Normal University, Beijing 100875, China
| | - Jiashen Feng
- State Key Laboratory of Water Environment Simulation, School of Environment, Beijing Normal University, Beijing 100875, China
| | - Ying-Xia Li
- State Key Laboratory of Water Environment Simulation, School of Environment, Beijing Normal University, Beijing 100875, China.
| |
Collapse
|
2
|
Sun N, Wang T, Qi B, Yu S, Yao Z, Zhu G, Fu Q, Li C. Inhibiting release of phenanthrene from rice-crab coculture sediments to overlying water with rice stalk biochar: Performance and mechanisms. THE SCIENCE OF THE TOTAL ENVIRONMENT 2024; 908:168385. [PMID: 37952670 DOI: 10.1016/j.scitotenv.2023.168385] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/10/2023] [Revised: 11/04/2023] [Accepted: 11/05/2023] [Indexed: 11/14/2023]
Abstract
Rice crab coculture is a new ecological agriculture model combining rice cultivation and crab farming. Current research related to rice crab coculture only focuses on production theory and technical system establishment, while ignoring the potential ecological risk of Polycyclic aromatic hydrocarbon(PAHs) in rice crab coculture sediment. In this study, rice straw was used to make rice straw biochar to explore the performance and mechanism of inhibiting release of phenanthrene(PHE) from rice-crab coculture sediments to overlying water with rice stalk biochar. The kinetic and isotherm adsorption data were best represented by the Langmuir model and pseudo-second-order model with a maximum adsorption capacity of 53.35 mg/g at 12 h contact time. The results showed that PHE was released from the rice-crab substrate to the overlying water in dissolved and particle forms as a result of bioturbation, and the PHE concentrations in dissolved and particle forms were 20.9 μg/L and 14.22 μg/L, respectively. This leads to secondary ecological risks in rice-crab co-culture systems. This is related to dissolved organic carbon(DOC) carrying the dissolved PHE and total suspended solids(TSS) carrying the particle PHE in the overlying water. Due to its large specific surface area, rice straw biochar is rich in functional groups, providing multiple hydrophobic adsorption sites. After adding rice straw biochar at 0.5 % w/w (dry weight) dose, the removal efficiency of dissolved and particulate PHE in the overlying water were 78.99 % and 42.11 %, respectively. Rice straw biochar is more competitively adsorbed PHE in the overlying water than TSS and DOC. The removal efficiency of PHE from the sediment was 52.75 %. This study confirmed that rice stalk biochar could effectively inhibit PHE migration and release in paddy sediment. It provides an environment- friendly in situ remediation method for the management of PAHs pollution from crab crops in rice fields.
Collapse
Affiliation(s)
- Nan Sun
- School of Water Conservancy and Civil Engineering, Northeast Agricultural University, Harbin 150030, China; Research Center for Ecological Agriculture and Soil-Water Environment Restoration, Northeast Agricultural University, Harbin, Heilongjiang 150030, China; Heilongjiang Academy of Environmental Sciences Postdoctoral Joint Scientific Research Station, Harbin 150030, China
| | - Tianyi Wang
- School of Water Conservancy and Civil Engineering, Northeast Agricultural University, Harbin 150030, China; Research Center for Ecological Agriculture and Soil-Water Environment Restoration, Northeast Agricultural University, Harbin, Heilongjiang 150030, China
| | - Bowei Qi
- School of Water Conservancy and Civil Engineering, Northeast Agricultural University, Harbin 150030, China; Research Center for Ecological Agriculture and Soil-Water Environment Restoration, Northeast Agricultural University, Harbin, Heilongjiang 150030, China
| | - Shijie Yu
- School of Water Conservancy and Civil Engineering, Northeast Agricultural University, Harbin 150030, China; Research Center for Ecological Agriculture and Soil-Water Environment Restoration, Northeast Agricultural University, Harbin, Heilongjiang 150030, China; Smart Home Business Group, Midea Group, Wuxi 214000, China
| | - Zhongbao Yao
- School of Water Conservancy and Civil Engineering, Northeast Agricultural University, Harbin 150030, China; Research Center for Ecological Agriculture and Soil-Water Environment Restoration, Northeast Agricultural University, Harbin, Heilongjiang 150030, China
| | - Guanglei Zhu
- School of Water Conservancy and Civil Engineering, Northeast Agricultural University, Harbin 150030, China; Research Center for Ecological Agriculture and Soil-Water Environment Restoration, Northeast Agricultural University, Harbin, Heilongjiang 150030, China
| | - Qiang Fu
- School of Water Conservancy and Civil Engineering, Northeast Agricultural University, Harbin 150030, China.
| | - Chenyang Li
- School of Water Conservancy and Civil Engineering, Northeast Agricultural University, Harbin 150030, China; Research Center for Ecological Agriculture and Soil-Water Environment Restoration, Northeast Agricultural University, Harbin, Heilongjiang 150030, China.
| |
Collapse
|
3
|
Alishirazi M, Salmak S, Gitipour S. A comprehensive assessment to offer optimized remediation method for mercury contamination in Musa Bay by using hybrid Fuzzy AHP-VIKOR approach. ENVIRONMENTAL GEOCHEMISTRY AND HEALTH 2023; 45:8685-8707. [PMID: 37702854 DOI: 10.1007/s10653-023-01745-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/03/2023] [Accepted: 08/24/2023] [Indexed: 09/14/2023]
Abstract
Musa Bay, the largest wetland in Iran and one of the most important Hg-polluted media, plays a significant role in the ecosystem of the area and supports many forms of life. Mercury pollution has detrimental effects on the human body and at high levels leads to the loss of microorganisms in marine ecosystems. Hence, a comprehensive assessment for selecting an effective and sustainable remediation method is crucial to restoring the ecosystem promptly. The determination of a proper and practical treatment method not only is a case-based approach, but could be challenging due to its multi-criteria decision-making nature. Considering preferred crucial factors involved in the effectiveness of remedial actions, in this study a questionnaire is designed to assess the opinion of environmental experts, stakeholders, and some occupants of the area on remedial actions based on the importance weights of criteria. Subsequently, practical remediation and management strategies ranked by hybrid FVIKOR as a multi-criteria decision making (MCDM) method. Ranking results show that dredging and stabilization could offer a promising solution for the remediation of the case study. The results of the study demonstrate that the development of MCDM methods along with effective criteria and considering the analysis of the questionnaires, could offer the best remediation strategy for a specific contaminated site.
Collapse
Affiliation(s)
| | - Saba Salmak
- Department of Environmental Engineering, University of Tehran, Tehran, Iran.
| | - Saeid Gitipour
- Department of Environmental Engineering, University of Tehran, Tehran, Iran
| |
Collapse
|
4
|
Dahlberg AK, Wiberg K, Snowball I, Lehoux AP. Capping fiberbank sediments to reduce persistent organic pollutants (POPs) fluxes: A large-scale laboratory column experiment. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2023; 333:122019. [PMID: 37315886 DOI: 10.1016/j.envpol.2023.122019] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/06/2023] [Revised: 06/09/2023] [Accepted: 06/10/2023] [Indexed: 06/16/2023]
Abstract
Deposits of contaminated wood fiber waste (fiberbanks), originating from sawmills and pulp and paper industries, have been found in the aquatic environment in boreal countries. In-situ isolation capping has been proposed as a remediation solution because it has the potential to prevent dispersal of persistent organic pollutants (POPs) from this type of sediment. However, knowledge about the performance of such caps when placed on very soft (unconsolidated), gaseous organic rich sediment is scarce. We investigated the effectiveness of conventional in-situ capping to limit POPs fluxes to the water column from contaminated fibrous sediments that produce gas. A controlled, large-scale laboratory column (40 cm diameter, 2 m height) experiment was performed over 8 months to study changes in sediment-to-water fluxes of POPs and particle resuspension before and after capping the sediment with crushed stones (≥4 mm grain size). Two different cap thicknesses were tested (20 and 45 cm) on two types of fiberbank sediment with different fiber type composition. Results showed that capping fiberbank sediment with a 45 cm gravel cap reduced the sediment-to-water flux by 91-95% for p,p'-DDD, o,p'-DDD, by 39-82% for CB-101, CB-118, CB-138, CB-153, CB-180 and by 12-18% for HCB, whereas for less hydrophobic PCBs, capping was largely ineffective (i.e. CB-28 and CB-52). Although cap application caused particle resuspension, the long-term effect of the cap was reduced particle resuspension. On the other hand, substantial sediment consolidation released large volumes of contaminated pore water into the overlying water body. Importantly, both sediment types produced large amount of gas, observed as gas voids forming inside the sediment and gas ebullition events, which increased pore water advection and affected the structural integrity of the cap. This may limit the practical applicability of this method on fiberbank sediments.
Collapse
Affiliation(s)
- Anna-Karin Dahlberg
- Department of Aquatic Sciences and Assessment, Swedish University of Agricultural Sciences (SLU), Box 7050, SE-750 07, Uppsala, Sweden.
| | - Karin Wiberg
- Department of Aquatic Sciences and Assessment, Swedish University of Agricultural Sciences (SLU), Box 7050, SE-750 07, Uppsala, Sweden
| | - Ian Snowball
- Department of Earth Sciences, Uppsala University, Box 256, SE-751 05, Uppsala, Sweden
| | - Alizée P Lehoux
- Department of Earth Sciences, Uppsala University, Box 256, SE-751 05, Uppsala, Sweden
| |
Collapse
|
5
|
Duan P, Ding S, Jiao L, Wang M, Zhang Y, Qian C. Simultaneous immobilization of ammonia and phosphorous by thermally treated sediment co-modified with hydrophilic organic matter and zeolite. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2023; 339:117800. [PMID: 37030239 DOI: 10.1016/j.jenvman.2023.117800] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/25/2022] [Revised: 03/20/2023] [Accepted: 03/22/2023] [Indexed: 05/03/2023]
Abstract
The use of calcined sediments (CS) for thin-layer capping is an environment-friendly technology for controlling nitrogen (N) or phosphorus (P) release. However, the effects of CS derived materials and efficiency in controlling the sedimentary N/P ratio have not been thoroughly investigated. While zeolite-based materials have been proven efficient to remove ammonia, it is limited by the low adsorption capacity of PO43-. Herein, CS co-modified with zeolite and hydrophilic organic matter (HIM) was synthesized to simultaneously immobilize ammonium-N (NH4+-N) and remove P, due to the superior ecological security of natural HIM. Studies on the influences of calcination temperature and composition ratio indicated that 600 °C and 40% zeolite were the optimal parameters leading to the highest adsorption capacity and lowest equilibrium concentration. Compared with doping with polyaluminum chloride, doping with HIM not only enhanced P removal but also achieved higher NH4+-N immobilization efficacy. The efficiency of zeolite/CS/HIM capping and amendment in prohibiting the discharge of N/P from sediments was assessed via simulation experiments, and the relevant control mechanism was studied at the molecular level. The results indicated that zeolite/CS/HIM can reduce 49.98% and 72.27% of the N flux and 32.10% and 76.47% of the P flux in slightly and highly polluted sediments, respectively. Capping and incubation with zeolite/CS/HIM simultaneously resulted in substantial reductions in NH4+-N and dissolved total P in overlying water and pore water. Chemical state analysis indicated that HIM enhanced the NH4+-N adsorption ability of CS owing to its abundant carbonyl groups and indirectly increased P adsorption by protonating mineral surface groups. This research provides a novel strategy to control sedimentary nutrient release by adopting an efficient and ecologically secure remediation method to rehabilitate eutrophic lake systems.
Collapse
Affiliation(s)
- Pingzhou Duan
- State Key Laboratory of Environmental Criteria and Risk Assessment, Chinese Research Academy of Environmental Sciences, Beijing, 100012, People's Republic of China; Institute of Water Environment Research, Chinese Research Academy of Environmental Sciences, Beijing, 100012, People's Republic of China
| | - Shuai Ding
- State Key Laboratory of Environmental Criteria and Risk Assessment, Chinese Research Academy of Environmental Sciences, Beijing, 100012, People's Republic of China; Environmental Standard Institute, Ministry of Ecology and Environment of the People's Republic of China, Beijing, 100012, People's Republic of China
| | - Lixin Jiao
- State Key Laboratory of Environmental Criteria and Risk Assessment, Chinese Research Academy of Environmental Sciences, Beijing, 100012, People's Republic of China; Institute of Water Environment Research, Chinese Research Academy of Environmental Sciences, Beijing, 100012, People's Republic of China.
| | - Miao Wang
- Leping Branch of Jingdezhen Ecological Environment Bureau, Jiangxi, Leping, 333300, People's Republic of China
| | - Yun Zhang
- Coal Mining Geological Engineering Consulting and Geological Environment Monitoring Center, Guizhou, 550002, People's Republic of China
| | - Chang Qian
- State Key Laboratory of Environmental Criteria and Risk Assessment, Chinese Research Academy of Environmental Sciences, Beijing, 100012, People's Republic of China; Institute of Water Environment Research, Chinese Research Academy of Environmental Sciences, Beijing, 100012, People's Republic of China
| |
Collapse
|
6
|
Bianco F, Race M, Papirio S, Esposito G. Phenanthrene removal from a spent sediment washing solution in a continuous-flow stirred-tank reactor. ENVIRONMENTAL RESEARCH 2023; 228:115889. [PMID: 37054831 DOI: 10.1016/j.envres.2023.115889] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/01/2023] [Revised: 04/05/2023] [Accepted: 04/11/2023] [Indexed: 05/16/2023]
Abstract
The issue of polycyclic aromatic hydrocarbons (PAHs) is widespread in marine sediments involving ecological systems and human health. Sediment washing (SW) has proven to be the most effective remediation approach for sediments polluted by PAHs, such as phenanthrene (PHE). However, SW still raises waste handling concerns due to a considerable amount of effluents generated downstream. In this context, the biological treatment of a PHE- and ethanol-containing spent SW solution can represent a highly efficient and environmentally-friendly strategy, but its knowledge is still scarce in scientific literature and no studies have so far been conducted in continuous mode. Therefore, a synthetic PHE-polluted SW solution was biologically treated in a 1 L aerated continuous-flow stirred-tank reactor for 129 days by evaluating the effect of different pH values, aeration flowrates and hydraulic retention times as operating parameters over five successive phases. A PHE removal efficiency of up to 75-94% was achieved by an acclimated PHE-degrading consortium mainly composed of Proteobacteria, Bacteroidota and Firmicutes phyla through biodegradation following the adsorption mechanism. PHE biodegradation, mainly occurring via the benzoate route due to the presence of PAH-related-degrading functional genes and a phthalate accumulation up to 46 mg/L, was also accompanied by a reduction of dissolved organic carbon and ammonia nitrogen above 99% in the treated SW solution.
Collapse
Affiliation(s)
- Francesco Bianco
- Department of Civil and Mechanical Engineering, University of Cassino and Southern Lazio, Via Di Biasio 43, 03043, Cassino, Italy.
| | - Marco Race
- Department of Civil and Mechanical Engineering, University of Cassino and Southern Lazio, Via Di Biasio 43, 03043, Cassino, Italy
| | - Stefano Papirio
- Department of Civil, Architectural and Environmental Engineering, University of Napoli Federico II, Via Claudio 21, 80125, Napoli, Italy
| | - Giovanni Esposito
- Department of Civil, Architectural and Environmental Engineering, University of Napoli Federico II, Via Claudio 21, 80125, Napoli, Italy
| |
Collapse
|
7
|
Nathani NM, Mootapally C, Sharma P, Solomon S, Kumar R, Fulke AB, Kumar M. Microbial machinery dealing diverse aromatic compounds: Decoded from pelagic sediment ecogenomics in the gulfs of Kathiawar Peninsula and Arabian Sea. ENVIRONMENTAL RESEARCH 2023; 225:115603. [PMID: 36863652 DOI: 10.1016/j.envres.2023.115603] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/15/2023] [Revised: 02/16/2023] [Accepted: 02/28/2023] [Indexed: 05/25/2023]
Abstract
Aromatic hydrocarbons are persistent pollutants in aquatic systems as endocrine disruptors, significantly impacting natural ecosystems and human health. Microbes perform as natural bioremediators to remove and regulate aromatic hydrocarbons in the marine ecosystem. The present study focuses upon the comparative diversity and abundance of various hydrocarbon-degrading enzymes and their pathways from deep sediments along the Gulf of Kathiawar Peninsula and Arabian Sea, India. The elucidation of large number of degradation pathways in the study area under the presence of a wide range of pollutants whose fate needs to be addressed. Sediment core samples were collected, and the whole microbiome was sequenced. Analysis of the predicted ORFs (open reading frames) against the AromaDeg database revealed 2946 aromatic hydrocarbon-degrading enzyme sequences. Statistical analysis portrayed that the Gulfs were more diverse in degradation pathways compared to the open sea, with the Gulf of Kutch being more prosperous and more diverse than the Gulf of Cambay. The vast majority of the annotated ORFs belonged to groups of dioxygenases that included catechol, gentisate, and benzene dioxygenases, along with Rieske (2Fe-2S) and vicinal oxygen chelate (VOC) family proteins. From the sampling sites, only 960 of the total predicted genes were given taxonomic annotations, which mention the presence of many under-explored marine microorganism-derived hydrocarbon degrading genes and pathways. Through the present study, we tried to unveil the array of catabolic pathways of aromatic hydrocarbon degradation and genes from a marine ecosystem that upholds economic and ecological significance in India. Thus, this study provides vast opportunities and strategies for microbial resource recovery in marine ecosystems, which can be investigated to explore aromatic hydrocarbon degradation and their potential mechanisms under various oxic or anoxic environments. Future studies should focus on aromatic hydrocarbon degradation by considering degradation pathways, biochemical analysis, enzymatic, metabolic, and genetic systems, and regulations.
Collapse
Affiliation(s)
- Neelam M Nathani
- School of Applied Sciences & Technology (SAST-GTU), Gujarat Technological University, Ahmedabad, 382424, Gujarat, India; Department of Life Sciences, Maharaja Krishnakumarsinhji Bhavnagar University, Bhavnagar, 364001, Gujarat, India
| | - Chandrashekar Mootapally
- School of Applied Sciences & Technology (SAST-GTU), Gujarat Technological University, Ahmedabad, 382424, Gujarat, India; Department of Marine Science, Maharaja Krishnakumarsinhji Bhavnagar University, Bhavnagar, 364001, Gujarat, India
| | - Parth Sharma
- School of Applied Sciences & Technology (SAST-GTU), Gujarat Technological University, Ahmedabad, 382424, Gujarat, India
| | - Solly Solomon
- Department of Marine Biology, Microbiology and Biochemistry, School of Marine Sciences, Cochin University of Science & Technology, Kochi, 682022, Kerala, India; Cochin Base of Fishery Survey of India, Post Box 853 Kochangady, Cochin, 682005, Kerala, India
| | - Rakesh Kumar
- School of Ecology and Environment Studies, Nalanda University, Rajgir, 803116, Bihar, India
| | - Abhay B Fulke
- Microbiology Division, CSIR - National Institute of Oceanography (CSIR-NIO), Regional Centre, Andheri (West), Maharashtra, 400053, India
| | - Manish Kumar
- Sustainability Cluster, University of Petroleum & Energy Studies, Dehradun, Uttarakhand, 248007, India; Escuela de Ingeniería y Ciencias, Tecnologico de Monterrey, Campus Monterey, Monterrey, 64849, Nuevo Leon, Mexico.
| |
Collapse
|
8
|
Garza-Rubalcava U, Smith AV, Thomas C, Mills MA, Jackson WA, Reible DD. Long-term monitoring and modeling of PAHs in capped sediments at the Grand Calumet River. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2023; 328:121633. [PMID: 37075922 DOI: 10.1016/j.envpol.2023.121633] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/15/2023] [Revised: 04/10/2023] [Accepted: 04/11/2023] [Indexed: 05/03/2023]
Abstract
The assessment of a cap for remediation of sediments requires long-term monitoring because of the slow migration of contaminants in porous media. In this study, coring and passive sampling tools were used to assess the transport and degradation of polycyclic aromatic hydrocarbons (PAHs) in an amended cap (sand + Organoclay® PM-199) in the Grand Calumet River (Indiana, USA) during four sampling events from 2012 to 2019. Measurements of three PAHs (phenanthrene (Phe), pyrene (Pyr) and benzo[a]pyrene (BaP), representing low, medium, and high molecular weight compounds, respectively) showed a difference of at least two orders of magnitude between bulk concentrations in the native sediments and the remediation cap. Averages of pore water measurements also showed lower levels in the cap respective to the native sediments by a factor of at least 7 for Phe and 3 for Pyr. In addition, between the baseline (BL), which corresponds to observations from 2012 to 2014, and the measurements in 2019, there was a decrease in depth-averaged pore water concentrations of Phe (C2019/CBL=0.20-0.07+0.12 in sediments and 0.27-0.10+0.15 in cap) and Pyr (C2019/CBL=0.47-0.12+0.16 in sediments and 0.71-0.20+0.28 in the cap). In the case of BaP in pore water, no change was observed in native sediments (C2019/CBL=1.0-0.24+0.32) and there was an increase in the cap (C2019/CBL=2.0-0.54+0.72). Inorganic anions and estimates of pore water velocity along with measurements of PAHs were used to model the fate and transport of contaminants. The modeling suggested that degradation of Phe (t1/2=1.12-0.11+0.16 years) and Pyr (t1/2=5.34-1.8+5.3 years) in the cap is faster than migration, thus the cap is expected to be protective of the sediment-water interface indefinitely for these constituents. No degradation was noted in BaP and the contaminant is expected to reach equilibrium in the capping layer over approximately 100 years if there exists sufficient mass of BaP in the sediments and there is no deposition of clean sediment at the surface.
Collapse
Affiliation(s)
| | - Alex V Smith
- Department of Civil, Environmental and Construction Engineering, Texas Tech University, USA
| | | | | | - W Andrew Jackson
- Department of Civil, Environmental and Construction Engineering, Texas Tech University, USA
| | - Danny D Reible
- Department of Chemical Engineering, Texas Tech University, USA; Department of Civil, Environmental and Construction Engineering, Texas Tech University, USA.
| |
Collapse
|
9
|
Lu H, Gao W, Deng C, Liu X, Li W, Yu Z, Ding H, Zhang L. Degradation of atrazine in river sediment by dielectric barrier discharge plasma (DBDP) combined with a persulfate (PS) oxidation system: response surface methodology, degradation mechanisms, and pathways. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2023; 30:51303-51313. [PMID: 36809616 DOI: 10.1007/s11356-022-24927-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/24/2022] [Accepted: 12/19/2022] [Indexed: 04/16/2023]
Abstract
Single degradation systems based on dielectric barrier discharge plasma (DBDP) or persulfate (PS) oxidation cannot achieve the desired goals (high degradation efficiency, high mineralization rate, and low product toxicity) of degrading atrazine (ATZ) in river sediment. In this study, DBDP was combined with a PS oxidation system (DBDP/PS synergistic system) to degrade ATZ in river sediment. A Box-Behnken design (BBD) including five factors (discharge voltage, air flow, initial concentration, oxidizer dose, and activator dose) and three levels (- 1, 0, and 1) was established to test a mathematical model by response surface methodology (RSM). The results confirmed that the degradation efficiency of ATZ in river sediment was 96.5% in the DBDP/PS synergistic system after 10 min of degradation. The experimental total organic carbon (TOC) removal efficiency results indicated that 85.3% of ATZ is mineralized into CO2, H2O, and NH4+, which effectively reduces the possible biological toxicity of the intermediate products. Active species (sulfate (SO4•-), hydroxy (•OH), and superoxide (•O2-) radicals) were found to exert positive effects in the DBDP/PS synergistic system and illustrated the degradation mechanism of ATZ. The ATZ degradation pathway, composed of 7 main intermediates, was clarified by Fourier transform infrared spectroscopy (FTIR) and gas chromatography-mass spectrometry (GC-MS). This study indicates that the DBDP/PS synergistic system is a highly efficient, environmentally friendly, novel method for the remediation of river sediment containing ATZ pollution.
Collapse
Affiliation(s)
- Hongyu Lu
- School of Biology, Food, and Environment, Hefei University, No. 99 Jinxiu Road, Hefei, 230601, China
- Heifei Engineering Research Center for Soil and Groundwater Remediation, Hefei, 230088, China
| | - Wei Gao
- School of Biology, Food, and Environment, Hefei University, No. 99 Jinxiu Road, Hefei, 230601, China
| | - Chengxun Deng
- School of Biology, Food, and Environment, Hefei University, No. 99 Jinxiu Road, Hefei, 230601, China.
- Heifei Engineering Research Center for Soil and Groundwater Remediation, Hefei, 230088, China.
| | - Xiaowei Liu
- School of Biology, Food, and Environment, Hefei University, No. 99 Jinxiu Road, Hefei, 230601, China
- Heifei Engineering Research Center for Soil and Groundwater Remediation, Hefei, 230088, China
| | - Weiping Li
- Heifei Engineering Research Center for Soil and Groundwater Remediation, Hefei, 230088, China
- Anhui Guozhen Environmental Remediation Co., Ltd, Hefei, 230088, China
| | - Zhimin Yu
- School of Biology, Food, and Environment, Hefei University, No. 99 Jinxiu Road, Hefei, 230601, China
- Heifei Engineering Research Center for Soil and Groundwater Remediation, Hefei, 230088, China
| | - Haitao Ding
- School of Biology, Food, and Environment, Hefei University, No. 99 Jinxiu Road, Hefei, 230601, China
| | - Ling Zhang
- School of Biology, Food, and Environment, Hefei University, No. 99 Jinxiu Road, Hefei, 230601, China
- Heifei Engineering Research Center for Soil and Groundwater Remediation, Hefei, 230088, China
| |
Collapse
|
10
|
Xia R, Duan P, Li R, Jiao L, He J, Ding S, Wu X. Effects of calcination on the environmental behavior of sediments by phosphorus speciation and interface characterization. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2023; 330:117103. [PMID: 36603249 DOI: 10.1016/j.jenvman.2022.117103] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/21/2022] [Revised: 11/27/2022] [Accepted: 12/19/2022] [Indexed: 06/17/2023]
Abstract
Dredged sediments derived from eutrophicated lakes poses hardness of sludge disposal and ecological risks. The proper pretreatment and utilization of dredged sediments presented a challenge. In this study, Dianchi Lake sediments were dredged, thermally treated and utilized as particle capping material in batch experiments. The effects of calcination on phosphorus speciation and sediment-water interface environment as well as P immobility mechanism were predominantly explored. The microstructures and chemical compositions of calcined sediments were investigated, indicating the porosity and mineralization components were greatly enhanced. The fractional analysis of phosphorus revealed that the calcination process reduced the percentage of unsteady phosphorus, transforming into stable inert phosphorus fractions (Al-P, Ca-P and Res-P), respectively, thereby minimized its mobility and eutrophication risk. Interestingly, calcination temperatures of 700 °C and 800 °C resulted in smaller releasing potentials and equilibrium phosphorus concentrations, despite having lower adsorption capacities than 550 °C. Furthermore, the results of redox potential monitoring showed that the thermally treated Dianchi Lake sediments could enhance the redox potential and dissolved oxygen in the surface sediment, indicating the amelioration of interfacial environment. The practical monitoring experiments confirmed the capping depressed the DTP to 0.031 mg L-1. The investigation of this study provided explicit evidence of Ca coupled P and aerobic Fe bound P strengthened the immobilization effects, and the development of sediment calcination demonstrates a promising strategy for alleviating the burden of endogenous pollution and improving aerobic environment, which are of great significance for lake ecological remediation.
Collapse
Affiliation(s)
- Rui Xia
- State Key Laboratory of Environmental Criteria and Risk Assessment, Chinese Research Academy of Environmental Sciences, Beijing, 100012, People's Republic of China; Institute of Water Environment Research, Chinese Research Academy of Environmental Sciences, Beijing, 100012, People's Republic of China
| | - Pingzhou Duan
- State Key Laboratory of Environmental Criteria and Risk Assessment, Chinese Research Academy of Environmental Sciences, Beijing, 100012, People's Republic of China; Institute of Water Environment Research, Chinese Research Academy of Environmental Sciences, Beijing, 100012, People's Republic of China
| | - Rui Li
- Basin Water Environmental Research Department, Changjiang River Scientific Research Institute, Wuhan, 430010, People's Republic of China
| | - Lixin Jiao
- State Key Laboratory of Environmental Criteria and Risk Assessment, Chinese Research Academy of Environmental Sciences, Beijing, 100012, People's Republic of China; Institute of Water Environment Research, Chinese Research Academy of Environmental Sciences, Beijing, 100012, People's Republic of China.
| | - Jia He
- Kunming Institute of Eco-Environmental Sciences, Yunnan, Kunming, 650032, People's Republic of China
| | - Shuai Ding
- State Key Laboratory of Environmental Criteria and Risk Assessment, Chinese Research Academy of Environmental Sciences, Beijing, 100012, People's Republic of China
| | - Xue Wu
- Kunming Institute of Eco-Environmental Sciences, Yunnan, Kunming, 650032, People's Republic of China
| |
Collapse
|
11
|
Aoudjit L, Salazar H, Zioui D, Sebti A, Martins PM, Lanceros-Méndez S. Solar Photocatalytic Membranes: An Experimental and Artificial Neural Network Modeling Approach for Niflumic Acid Degradation. MEMBRANES 2022; 12:membranes12090849. [PMID: 36135867 PMCID: PMC9504027 DOI: 10.3390/membranes12090849] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/02/2022] [Revised: 08/18/2022] [Accepted: 08/22/2022] [Indexed: 05/26/2023]
Abstract
The presence of contaminants of emerging concern (CEC), such as pharmaceuticals, in water sources is one of the main concerns nowadays due to their hazardous properties causing severe effects on human health and ecosystem biodiversity. Niflumic acid (NFA) is a widely used anti-inflammatory drug, and it is known for its non-biodegradability and resistance to chemical and biological degradation processes. In this work, a 10 wt.% TiO2/PVDF-TrFE nanocomposite membrane (NCM) was prepared by the solvent casting technique, fully characterized, and implemented on an up-scaled photocatalytic membrane reactor (PMR). The photocatalytic activity of the NCM was evaluated on NFA degradation under different experimental conditions, including NFA concentration, pH of the media, irradiation time and intensity. The NCM demonstrated a remarkable photocatalytic efficiency on NFA degradation, as efficiency of 91% was achieved after 6 h under solar irradiation at neutral pH. The NCM proved effective in long-term use, with maximum efficiency losses of 7%. An artificial neural network (ANN) model was designed to model NFA's photocatalytic degradation behavior, demonstrating a good agreement between experimental and predicted data, with an R2 of 0.98. The relative significance of each experimental condition was evaluated, and the irradiation time proved to be the most significant parameter affecting the NFA degradation efficiency. The designed ANN model provides a reliable framework l for modeling the photocatalytic activity of TiO2/PVDF-TrFE and related NCM.
Collapse
Affiliation(s)
- Lamine Aoudjit
- Unité de Développement des Équipements Solaires, UDES/Centre de Développement des Energies Renouvelables, CDER, Bou Ismail 42415, Algeria
| | - Hugo Salazar
- Physics Centre of Minho and Porto Universities (CF-UM-UP), University of Minho, Campus de Gualtar, 4710-057 Braga, Portugal
- LaPMET—Laboratory of Physics for Materials and Emergent Technologies, University of Minho, Campus de Gualtar, 4710-057 Braga, Portugal
- Centre/Department of Chemistry, University of Minho, Campus de Gualtar, 4710-057 Braga, Portugal
| | - Djamila Zioui
- Unité de Développement des Équipements Solaires, UDES/Centre de Développement des Energies Renouvelables, CDER, Bou Ismail 42415, Algeria
| | - Aicha Sebti
- Unité de Développement des Équipements Solaires, UDES/Centre de Développement des Energies Renouvelables, CDER, Bou Ismail 42415, Algeria
| | - Pedro Manuel Martins
- Centre of Molecular and Environmental Biology, University of Minho, Campus de Gualtar, 4710-057 Braga, Portugal
- Institute of Science and Innovation on Bio-Sustainability (IB-S), University of Minho, 4710-057 Braga, Portugal
| | - Senentxu Lanceros-Méndez
- BCMaterials, Basque Centre for Materials, Applications and Nanostructures, UPV/EHU Science Park, 48940 Leioa, Spain
- IKERBASQUE, Basque Foundation for Science, 48013 Bilbao, Spain
| |
Collapse
|