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El Zokm GM, El Saharty AA, El-Said GF, Hussein MMA, Ghazal MA, Nasra AES, Okbah MA. A comparative study of surfactant distribution and fate (western and eastern) Egyptian Mediterranean coasts focusing on its environmental toxicity. MARINE ENVIRONMENTAL RESEARCH 2024; 198:106535. [PMID: 38704932 DOI: 10.1016/j.marenvres.2024.106535] [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: 12/16/2023] [Revised: 04/23/2024] [Accepted: 04/29/2024] [Indexed: 05/07/2024]
Abstract
One of the most difficult-to-manage new contaminants constantly released into the environment is linear alkylbenzene sulphonate (LAS), an anionic surfactant. Significant volumes of LAS are received by the Mediterranean coast of Egypt. The current study is a comprehensive assessment of the environmental fate of the LAS 1505 km off the Mediterranean coast of Egypt in the fall of 2023 in order to track its geographic spread and eventual demise in the water column. Critical analysis of LAS revealed that it is vertically distributed in various ways according to sources, uses, production amounts, and salinity levels. The vertical variation of LAS can be explained by its amphiphilic structure. A significant increase in surfactant concentration (>300 μg/L) was recorded in 66% and 43% of the total samples, ranging from 301.128 to 455.36 and from 304.556 to 486.135 for the western and eastern sides along the Egyptian Mediterranean coast, respectively. Evaluation of the average acute and chronic risk quotient (RQ) along the investigated locations revealed that fish were the most susceptible to LAS in both long and short exposure periods. The presented results also indicated significant LAS toxicity to three trophic levels (RQ values > 1). LAS toxicity to marine organisms was greater in the western than in eastern coastal regions according to acute and chronic mixture risk characterization ratios (RCRmix). The three trophic levels in the study area had the following order of acute relative contribution (RC) to LAS toxicity: fish > invertebrates > algae. The ANOVA test results showed that in both the western and eastern regions, LAS varied significantly (p < 0.05) with salinity (1.04E-60 and 5.44E-42) and depth (6.02E-65 and 1.59E-47), respectively. In addition, a significant difference was observed using the ANOVA test between the eastern and western regions of the Egyptian Mediterranean coast.
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Affiliation(s)
- Gehan M El Zokm
- National Institute of Oceanography and Fisheries, NIOF, Egypt
| | | | - Ghada F El-Said
- National Institute of Oceanography and Fisheries, NIOF, Egypt.
| | | | | | | | - Mohamed A Okbah
- National Institute of Oceanography and Fisheries, NIOF, Egypt
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El Zokm GM, El-Said GF, Okbah MA. Impact of land development along the western Mediterranean coast of Egypt regarding surfactant sources, interfering elements and ecotoxicity. MARINE POLLUTION BULLETIN 2024; 203:116372. [PMID: 38688238 DOI: 10.1016/j.marpolbul.2024.116372] [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: 02/07/2024] [Revised: 04/07/2024] [Accepted: 04/09/2024] [Indexed: 05/02/2024]
Abstract
The effect of recent land development of the western side of the Egyptian Mediterranean coast on the fates, behaviors, interactions, and ecotoxicology of surfactant (LAS), F, Br, B, Ca, Mg, and P was studied. Samples of seawater and sediments were collected from 15 stations at different depths representing, 5 perpendicular sectors. Elevated levels of LAS were identified in seawater columns in the El-Hamam (467.3 ± 220.8 μg/L) and El-Dabaa (480.0 ± 314.1 μg/L) stations. LAS homologue in sediment was in the range of 0.013-0.024, 0.042-0.184, 0.086-0.402, and 0.025-0.058 μg/g for C10, C11, C12, and C13, respectively. Studied parameters showed mixture risk characterization ratios RCRmix > 1 for algae, invertebrates, and fish in seawater and sediments, except for P, which showed low risk (RCRmix ≤ 1) in sediment. Acute relative contribution (RC) of LAS reflected that fish were the most sensitive species (RCFish = 48.5), followed by algae (RCAlgae = 44.4) and invertebrates (RCInvert = 7.1).
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Affiliation(s)
- Gehan M El Zokm
- National Institute of Oceanography and Fisheries, NIOF, Egypt.
| | - Ghada F El-Said
- National Institute of Oceanography and Fisheries, NIOF, Egypt
| | - Mohamed A Okbah
- National Institute of Oceanography and Fisheries, NIOF, Egypt
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Gaur S, Jujaru M, Vennu R, Gupta S, Jain A. Valorization of waste engine oil to mono- and di-rhamnolipid in a sustainable approach to circular bioeconomy. Biodegradation 2024:10.1007/s10532-024-10081-6. [PMID: 38662141 DOI: 10.1007/s10532-024-10081-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2023] [Accepted: 03/18/2024] [Indexed: 04/26/2024]
Abstract
This study aims to valorize waste engine oil (WEO) for synthesizing economically viable biosurfactants (rhamnolipids) to strengthen the circular bioeconomy concept. It specifically focuses on investigating the influence of key bioprocess parameters, viz. agitation and aeration rates, on enhancing rhamnolipid yield in a fed-batch fermentation mode. The methodology involves conducting experiments in a stirred tank bioreactor (3 L) using Pseudomonas aeruginosa gi |KP 163922| as the test organism. Central composite design and response surface methodology (CCD-RSM) are employed to design the experiments and analyze the effects of agitation and aeration rates on various parameters, including dry cell biomass (DCBM), surface tension, tensoactivity, and rhamnolipid yield. It is also essential to determine the mechanistic pathway of biosurfactant production followed by the strain using complex hydrophobic substrates such as WEO. The study reveals that optimal agitation and aeration rates of 200 rpm and 1 Lpm result in the highest biosurfactant yield of 29.76 g/L with minimal surface tension (28 mN/m). Biosurfactant characterization using FTIR, 1H NMR, and UPLC-MS/MS confirm the presence of dominant molecular ion peaks m/z 543.9 and 675.1. This suggests that the biosurfactant is a mixture of mono- and di-rhamnolipids (RhaC10C10, RhaRhaC10C12:1, RhaRhaC12:1C10). The findings present a sustainable approach for biosurfactant production in a fed-batch bioreactor. This research opens the possibility of exploring the use of pilot or large-scale bioreactors for biosurfactant production in future investigations.
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Affiliation(s)
- Shailee Gaur
- Department of Chemical Engineering, Birla Institute of Technology and Science, Pilani, Pilani Campus, Pilani, Rajasthan, 333031, India
| | - Mohan Jujaru
- Department of Chemical Engineering, Birla Institute of Technology and Science, Pilani, Pilani Campus, Pilani, Rajasthan, 333031, India
| | - Revanth Vennu
- Department of Chemical Engineering, Birla Institute of Technology and Science, Pilani, Pilani Campus, Pilani, Rajasthan, 333031, India
| | - Suresh Gupta
- Department of Chemical Engineering, Birla Institute of Technology and Science, Pilani, Pilani Campus, Pilani, Rajasthan, 333031, India
| | - Amit Jain
- Department of Chemical Engineering, Birla Institute of Technology and Science, Pilani, Pilani Campus, Pilani, Rajasthan, 333031, India.
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Wang C, Xu C, Liu D, Yang Z, Yang S, Feng Z, Xu J, Li Y. The effect of Tween 80 on monochlorobenzene migration in bentonite. JOURNAL OF HAZARDOUS MATERIALS 2024; 468:133781. [PMID: 38401220 DOI: 10.1016/j.jhazmat.2024.133781] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/24/2023] [Revised: 02/09/2024] [Accepted: 02/12/2024] [Indexed: 02/26/2024]
Abstract
Several studies conducted at industrial sites have documented the infiltration of dense non-aqueous phase liquids (DNAPLs) into clay layers, a phenomenon potentially influenced by the coexistence of chemicals like surfactants in some common pollutants. Bentonite (Ben), monochlorobenzene (MCB), and Tween 80 (T80) were selected as reference components to investigate the influences of nonionic surfactants on DNAPLs migration in clays. Results showed that T80 promotes MCB dissolution and encourages MCB adsorption on Ben. This process reduces the hydrophilicity of Ben, resulting in water loss and shrinkage, which creates cracks and facilitates the migration of MCB within the clay. Tw80 notably enhances MCB solubility, as indicated by a molar solubilization ratio of 7.80. The MCB adsorption on Ben (QMCB) displays a linear increase with raising the T80 adsorption on Ben (QT80), especially when QT80 are below the thresholds, e.g., 408.4 mg/g at pH 3 and 339.3 mg/g at pH 7; however, QMCB is decreased with increasing adsorbed T80 further. The average fracture ratio, crack length, and crack width of cracked samples in the cracking experiments were 0.794%, 11.29 mm, and 0.209 mm, respectively. The findings here contribute to understanding the role of surfactants in VOC transport in contaminated sites.
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Affiliation(s)
- Changxiang Wang
- School of Environmental Studies, China University of Geosciences, Wuhan, Hubei 430078, China
| | - Changzhong Xu
- School of Environmental Studies, China University of Geosciences, Wuhan, Hubei 430078, China
| | - Danqing Liu
- School of Environmental Studies, China University of Geosciences, Wuhan, Hubei 430078, China
| | - Zhe Yang
- School of Environmental Science & Engineering, Huazhong University of Science and Technology, Wuhan, Hubei 430070, China
| | - Sen Yang
- School of Environmental Studies, China University of Geosciences, Wuhan, Hubei 430078, China
| | - Zhi Feng
- School of Environmental Studies, China University of Geosciences, Wuhan, Hubei 430078, China
| | - Jiali Xu
- School of Environmental Studies, China University of Geosciences, Wuhan, Hubei 430078, China
| | - Yilian Li
- School of Environmental Studies, China University of Geosciences, Wuhan, Hubei 430078, China.
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Garcia VSG, Tominaga FK, Rosa JM, Borrely SI. Emerging pollutants in textile wastewater: an ecotoxicological assessment focusing on surfactants. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2024; 31:27817-27828. [PMID: 38517631 DOI: 10.1007/s11356-024-32963-1] [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: 05/01/2023] [Accepted: 03/13/2024] [Indexed: 03/24/2024]
Abstract
Water and several chemicals, including dyestuffs, surfactants, acids, and salts, are required during textile dyeing processes. Surfactants are harmful to the aquatic environment and induce several negative biological effects in exposed biota. In this context, the present study aimed to assess acute effects of five surfactants, comprising anionic and nonionic classes, and other auxiliary products used in fiber dyeing processes to aquatic organisms Vibrio fischeri (bacteria) and Daphnia similis (cladocerans). The toxicities of binary surfactant mixtures containing the anionic surfactant dodecylbenzene sulfonate + nonionic fatty alcohol ethoxylate and dodecylbenzene sulfonate + nonionic alkylene oxide were also evaluated. Nonionic surfactants were more toxic than anionic compounds for both organisms. Acute nonionic toxicity ranged from 1.3 mg/L (fatty alcohol ethoxylate surfactant) to 2.6 mg/L (ethoxylate surfactant) for V. fischeri and from 1.9 mg/L (alkylene oxide surfactant) to 12.5 mg/L (alkyl aryl ethoxylated and aromatic sulfonate surfactant) for D. similis, while the anionic dodecylbenzene sulfonate EC50s were determined as 66.2 mg/L and 19.7 mg/L, respectively. Both mixtures were very toxic for the exposed organisms: the EC50 average in the anionic + fatty alcohol ethoxylate mixture was of 1.0 mg/L ± 0.11 for V. fischeri and 4.09 mg/L ± 0.69 for D. similis. While the anionic + alkylene oxide mixture, EC50 of 3.34 mg/L for D. similis and 3.60 mg/L for V. fischeri. These toxicity data suggested that the concentration addition was the best model to explain the action that is more likely to occur for mixture for the dodecylbenzene sulfonate and alkylene oxide mixtures in both organisms. Our findings also suggest that textile wastewater surfactants may interact and produce different responses in aquatic organisms, such as synergism and antagonism. Ecotoxicological assays provide relevant information concerning hazardous pollutants, which may then be adequately treated and suitably managed to reduce toxic loads, associated to suitable management plans.
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Affiliation(s)
| | - Flávio Kiyoshi Tominaga
- Instituto de Pesquisas Energéticas E Nucleares, Centro de Tecnologia das Radiações, IPEN/CNEN, São Paulo, Brazil
| | | | - Sueli Ivone Borrely
- Instituto de Pesquisas Energéticas E Nucleares, Centro de Tecnologia das Radiações, IPEN/CNEN, São Paulo, Brazil
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Ahmad A, Priyadarshini M, Yadav S, Ghangrekar MM, Surampalli RY. 3D electro-Fenton augmented with iron-biochar particle electrodes derived from waste iron bottle caps and sugarcane bagasse for the remediation of sodium dodecyl sulphate. ENVIRONMENTAL RESEARCH 2024; 245:117998. [PMID: 38145735 DOI: 10.1016/j.envres.2023.117998] [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: 11/04/2023] [Revised: 12/04/2023] [Accepted: 12/19/2023] [Indexed: 12/27/2023]
Abstract
The present work demonstrates a novel strategy of synthesizing iron-biochar (Fe@BCSB) composite made with the waste iron bottle cap and sugar cane bagasse for implementation in the three-dimensional electro-Fenton (3DEF) process. The catalytic ability of the Fe@BCSB composite was explored to remediate the sodium dodecyl sulphate (SDS) surfactant from wastewater at neutral pH. At the optimum operating condition of Fe@BCSB dose of 1.0 g L-1, current density of 4.66 mA cm-2, and Na2SO4 dose of 50 mM, nearly 92.7 ± 3.1% of 20 mg L-1 of SDS abatement was attained during 120 min of electrolysis time. Moreover, the Fe@BCSB showed significant recyclability up to six cycles. Besides, other organics were successfully treated with more than 85% abatement efficiency in the proposed Fe@BCSB-supported 3DEF process. The total operating cost obtained during SDS treatment was around 0.31 US$ m-3 of wastewater. The phytotoxicity test revealed the positive impact of the 3DEF-treated effluent on the germination of the Vigna radiata. The electron paramagnetic resonance conveyed •OH as the prevailing reactive species for the oxidation of SDS in the 3DEF process. Further, about 81.3 ± 3.8% of SDS and 53.7 ± 4.1% of mineralization efficacy were acquired from the real institutional sewage.
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Affiliation(s)
- Azhan Ahmad
- Department of Civil Engineering, Indian Institute of Technology Kharagpur, Kharagpur, 721302, India
| | - Monali Priyadarshini
- School of Environmental Science and Engineering, Indian Institute of Technology Kharagpur, Kharagpur, 721302, India
| | - Shraddha Yadav
- School of Environmental Science and Engineering, Indian Institute of Technology Kharagpur, Kharagpur, 721302, India
| | - Makarand M Ghangrekar
- Department of Civil Engineering, Indian Institute of Technology Kharagpur, Kharagpur, 721302, India; School of Environmental Science and Engineering, Indian Institute of Technology Kharagpur, Kharagpur, 721302, India.
| | - Rao Y Surampalli
- Global Institute for Energy, Environment and Sustainability, Kansas, USA
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7
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Bendjeffal H, Mamine H, Boukachabia M, Aloui A, Metidji T, Djebli A, Bouhedja Y. A Box-Behnken design-based chemometric approach to optimize the sono-photodegradation of hydroxychloroquine in water media using the Fe(0)/S 2O 82-/UV system. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2024; 31:22453-22470. [PMID: 38407707 DOI: 10.1007/s11356-024-32596-4] [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: 01/18/2023] [Accepted: 02/19/2024] [Indexed: 02/27/2024]
Abstract
The huge utilization of hydroxychloroquine in autoimmune infections led to an abnormal increment in its concentration in wastewater, which can pose a real risk to the environment, necessitating the development of a pretreatment technique. To do this, we are interested in researching how hydroxychloroquine degrades in contaminated water. The main goal of this investigation is to optimize the operating conditions for the sono-photodegradation of hydroxychloroquine in water using an ultrasound-assisted Fe(0)/S 2 O 8 2 - /UV system. To get adequate removal of HCQ, a chemometric method based on the Box-Behnken design was applied to optimize the influence of the empirical parameters selected, including Fe(0) dose,S 2 O 8 2 - concentration, pH, and initial HCQ concentration. The quadratic regression model representing the HCQ removal rate (η(%)) was evolved and validated by ANOVA. The optimal conditions as a result of the above-mentioned trade-off between the four input variables, with η(%) as the dependent output variable, were captured using RSM methodology and the composite desirability function approach. For HCQ full decomposition, the optimal values of the operating factors are as follows:S 2 O 8 2 - dose, 194.309 mg/L; Fe(0) quantity, 198.83 mg/L; pH = 2.017, and HCQ initial dose of 296.406 mg/L. Under these conditions, the HCQ removal rate, achieved after 60 min of reaction, attained 98.95%.
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Affiliation(s)
- Hacene Bendjeffal
- Laboratory of Physical Chemistry and Biology of Materials, Ecole Normale Superieure d'Enseignement Technologique de Skikda, Azzaba, Algeria.
| | - Hadjer Mamine
- Laboratory of Physical Chemistry and Biology of Materials, Ecole Normale Superieure d'Enseignement Technologique de Skikda, Azzaba, Algeria
| | - Mourad Boukachabia
- Ecocompatible Asymmetric Catalysis Laboratory, Badji Mokhtar-Annaba University, Annaba, Algeria
| | - Amel Aloui
- Laboratory of Physical Chemistry and Biology of Materials, Ecole Normale Superieure d'Enseignement Technologique de Skikda, Azzaba, Algeria
| | - Toufek Metidji
- LTEVI Laboratry, Badji Mokhtar-Annaba University, Annaba, Algeria
| | | | - Yacine Bouhedja
- Ecocompatible Asymmetric Catalysis Laboratory, Badji Mokhtar-Annaba University, Annaba, Algeria
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8
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Lei J, Qi R, Tumrani SH, Dong L, Jia H, Lei P, Yang Y, Feng C. Selective stepwise adsorption for enhanced removal of multi-component dissolved organic chemicals from petrochemical wastewater. THE SCIENCE OF THE TOTAL ENVIRONMENT 2024; 912:169600. [PMID: 38151126 DOI: 10.1016/j.scitotenv.2023.169600] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/21/2023] [Revised: 11/28/2023] [Accepted: 12/20/2023] [Indexed: 12/29/2023]
Abstract
The coexistence of multi-component dissolved organic chemicals causes tremendous challenge in purifying petrochemical wastewater, and stepwise selective adsorption holds the most promise for enhanced treatments. This study is designed to enhance the removal of multiple dissolved organic chemicals by stepwise adsorption. Special attention is given to the selective removal mechanisms for the major pollutant N,N-dimethylformamide (DMF), the sensitive pollutant fluorescent dissolved organic matter (FDOM) and other components. The results indicated that the combination of coal activated carbon and aluminum silica gel produced a synergistic effect and broke the limitation of removing only certain pollutants. Combined removal rates of 80.5 % for the dissolved organic carbon and 86.7 % for the biotoxicity in petrochemical wastewater were obtained with the enhanced two-step adsorption. The adsorption performance of both adsorbents remained stable even after five cycles. The selective adsorption mechanism revealed that hydrophobic organics such as DMF was adsorbed by the macropores of coal activated carbon, while the FDOM was eliminated by π-π stacking, electrostatic interaction and hydrophobic interaction. The hydrophilic organics were removed by the mesopores of aluminum silica gel, the silica hydroxyl groups and hydrophilic interaction. This study provides a comprehensive understanding of the selective adsorption mechanism and enhanced stepwise removal of multiple pollutants in petrochemical wastewater, which will guide the deep treatment of complex wastewater.
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Affiliation(s)
- Jinming Lei
- State Key Laboratory of Water Environment Simulation, School of Environment, Beijing Normal University, Beijing, 100875, PR China; The Key Laboratory of Water and Sediment Sciences, Ministry of Education, School of Environment, Beijing Normal University, Beijing 100875, PR China
| | - Ruifang Qi
- State Key Laboratory of Water Environment Simulation, School of Environment, Beijing Normal University, Beijing, 100875, PR China; College of Chemistry and Chemical Engineering, Xingtai University, Xingtai 054001, PR China
| | - Sadam Hussain Tumrani
- State Key Laboratory of Water Environment Simulation, School of Environment, Beijing Normal University, Beijing, 100875, PR China
| | - Lili Dong
- College of Chemistry and Chemical Engineering, Xingtai University, Xingtai 054001, PR China
| | - Huixian Jia
- Shanxi Xinhua Chemical Defense Equipment Research Institute Co., Ltd., Taiyuan 030008, PR China
| | - Peng Lei
- Shanxi Xinhua Chemical Defense Equipment Research Institute Co., Ltd., Taiyuan 030008, PR China
| | - Yu Yang
- State Key Laboratory of Water Environment Simulation, School of Environment, Beijing Normal University, Beijing, 100875, PR China
| | - Chenghong Feng
- State Key Laboratory of Water Environment Simulation, School of Environment, Beijing Normal University, Beijing, 100875, PR China; The Key Laboratory of Water and Sediment Sciences, Ministry of Education, School of Environment, Beijing Normal University, Beijing 100875, PR China.
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9
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Zhang L, Tang CY, Tang C, Wang H, Wang J, Li R, Feng H, Yue D. Superhydrophobic Nanoparticles: An Efficiently Selective Adsorbent for Surfactant-Like Contaminants from Complex Wastewater Matrices. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2024; 20:e2305807. [PMID: 37731008 DOI: 10.1002/smll.202305807] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/13/2023] [Revised: 08/31/2023] [Indexed: 09/22/2023]
Abstract
Surfactant-like contaminants (SLCs) with distinctive amphiphilic structures have become a global concern in wastewater due to their toxicity and persistency. Despite extensive efforts, achieving efficient and selective SLCs removal remains challenging because of their wide range of molecular weights and complex functional group compositions. Superhydrophobic nanoparticles can potentially tackle this challenge by targeting the long oleophilic chains of SLCs. However, conventional contact angle measurements hinder hydrophobicity characterization and corresponding selectivity research because of the powder morphology of nanoparticles. Herein, the authors offered information regarding the distribution of water molecular probes in surfaces and proposed a quantitative characterization approach based on low-field nuclear magnetic resonance. Through synthesizing superhydrophobic and hydrophilic polydopamine nanospheres with similar morphologies, the selective adsorption potential of superhydrophobic nanoparticles for SLCs is systematically demonstrated. As revealed by the interaction mechanisms, the superhydrophobic surface of nanospheres increased its affinity and selectivity for SLCs adsorption by enhancing hydrophobic interactions. Superhydrophobic modification achieved ten times the adsorption capacity of sodium dodecyl benzene sulfonate, an exemplified surfactant, compared with pristine nanoparticles. By regulated self-polymerization, the superhydrophobic nanospheres are coated onto the surface of a 3D sponge and enable efficient selective SLCs adsorption from highly polluted leachate matrices with long-term stability and reusability.
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Affiliation(s)
- Lingyue Zhang
- School of Environment, Tsinghua University, Beijing, 100084, China
- Department of Civil Engineering, The University of Hong Kong, Pokfulam, Hong Kong, SAR, 999077, China
| | - Chuyang Y Tang
- Department of Civil Engineering, The University of Hong Kong, Pokfulam, Hong Kong, SAR, 999077, China
| | - Chu Tang
- School of Environment, Tsinghua University, Beijing, 100084, China
| | - Huijing Wang
- School of Environment, Tsinghua University, Beijing, 100084, China
| | - Jianchao Wang
- School of Chemical and Environmental Engineering, China University of Mining and Technology (Beijing), Beijing, 100083, China
| | - Ruiying Li
- Department of Civil Engineering, The University of Hong Kong, Pokfulam, Hong Kong, SAR, 999077, China
| | - Haopeng Feng
- Department of Civil Engineering, The University of Hong Kong, Pokfulam, Hong Kong, SAR, 999077, China
| | - Dongbei Yue
- School of Environment, Tsinghua University, Beijing, 100084, China
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10
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Francisco Fukumoto AA, Alves Pimenta JA, Hirooka EY, Kuroda EK. Pesticides removal from water using activated carbons and carbon nanotubes. ENVIRONMENTAL TECHNOLOGY 2024; 45:431-453. [PMID: 35959785 DOI: 10.1080/09593330.2022.2112979] [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: 04/24/2022] [Accepted: 07/12/2022] [Indexed: 06/15/2023]
Abstract
The conventional water treatment technique (CT) widely applied cannot alone remove pesticides efficiently from water. Therefore, this work aimed to provide technical and scientific support for the association of pulverized activated carbon (PACs), granular activated carbon (GACs), and carbon nanotubes (CNT) with CT concerning atrazine (ATZ), simazine (SMZ), and diuron (DIU) removal. Actual conditions of pre/during, and post-treatment points of application, within water production process line, in water treatment plants (WTPs), using the pesticides in two forms, commercial product (CP) and analytical standard (SD). It was possible to demonstrate significant differences regarding the removal of ATZ, SMZ, and DIU in their SD and CP forms for the PACs, GACs, and CNTs. The minimum dosage of CNT required for adequate adsorption of all pesticides was superior to 160 mg. L-1; is 400% higher than the minimum dosage of 40 mg. L-1 is required for PAC application. ATZ, SMZ, and DIU in the SD form were more efficiently removed with percentages superior to 96.4% for ATZ, 98.2% for SMZ, and 99.1% for DIU. The characteristics of the adsorptive materials did not guide the adsorption efficacy. Instead, chemical interaction, contact time, and point application were critical factors. The pre-treatment and post-treatment applications were the most efficient, with removals oscillating from 97.7% to 100% for ATZ, 97.7% to 100% for SMZ, and 99.1 to 100% for DIU PAC and GAC, respectively.Highlights The pesticides forms of application, SD and CP, affect adsorption efficiency.Adsorbent point of application, in WTPLS, and contact time are key factors for pesticide removal.The primary adsorption mechanism in all the materials tested was chemical.The pre-treatment and post-treatment were the most efficient PACs and GACs application forms, respectively.
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Affiliation(s)
| | - José Augusto Alves Pimenta
- Technology and Urbanism Center, Civil Construction Department, State University of Londrina, Londrina, Brazil
| | - Elisa Yoko Hirooka
- Food and Drug Technology Department, State University of Londrina, Londrina, Brazil
| | - Emília Kiyomi Kuroda
- Technology and Urbanism Center, Civil Construction Department, State University of Londrina, Londrina, Brazil
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11
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Zhu S, Li Z, Yu M, Wang Q, Chen C, Ma J. Efficient removal of naphthenic acids from real petroleum wastewater by natural pyrite activated persulfate system. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2023; 348:119239. [PMID: 37827079 DOI: 10.1016/j.jenvman.2023.119239] [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: 06/01/2023] [Revised: 08/30/2023] [Accepted: 10/02/2023] [Indexed: 10/14/2023]
Abstract
The petroleum wastewater (PWW) contains a diverse range of recalcitrant organic contaminants. Of particular concern is the removal of naphthenic acids (NAs) due to the high toxicity and persistence. Persulfate (PS) based oxidation processes have shown promising in treating refractory wastewater, while the high costs of prepared catalysts limited their widespread implementation. This study aims to develop a cost-effective natural pyrite activated PS system for PWW treatment. The removal of NAs by pyrite/PS system was initially investigated. More than 90% of cyclohexanoic acid (CHA), a model NA, was removed in pyrite/PS system (2.0 g/L pyrite, 4.0 mM PS) at initial pH of 3-11. Scavenging experiments revealed that Fe(II) on pyrite surface was the reactive site for PS activation to generate reactive species, including sulfate radical (SO4·-), Fe(IV) and hydroxyl radical (·OH) for CHA degradation. Reactions of Fe(III) with S helped restore Fe(II) and enhance PS activation, resulting in the sustained catalytic activity of pyrites over five cycles. Cl-, SO42- and NO3- below 10 mM had minimal impact on CHA degradation in pyrite/PS system. However, over 1 mM of HCO3- inhibited 80% of CHA removal due to the buffer effect to maintain the high solution pH. Removing HCO3- from real PWW restored the removal of CHA and of total organic carbon (TOC) to over 90% and 71.3% in pyrite/PS system, respectively. Fourier transform ion cyclotron resonance mass spectrometry (FT-ICR MS) results indicated that O2‒6 species including NAs were primarily eliminated through mineralization and oxygen addition. Besides, O3-5S, NO3-5S and N3O2‒4 species were the most susceptible to oxidation in PWW, resulting in the increase of the oxidation level (i.e., O/Cwa) from 0.41 to 0.56 after treatment. This study provides valuable insights into the treatment of NAs in real PWW, and potential application of natural minerals in the treatment of industrial wastewater.
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Affiliation(s)
- Shuai Zhu
- State Key Laboratory of Heavy Oil Processing, China University of Petroleum-Beijing, Beijing, 102249, PR China
| | - Zhuoyu Li
- State Key Laboratory of Heavy Oil Processing, China University of Petroleum-Beijing, Beijing, 102249, PR China.
| | - Meiqi Yu
- State Key Laboratory of Heavy Oil Processing, China University of Petroleum-Beijing, Beijing, 102249, PR China
| | - Qinghong Wang
- State Key Laboratory of Heavy Oil Processing, China University of Petroleum-Beijing, Beijing, 102249, PR China
| | - Chunmao Chen
- State Key Laboratory of Heavy Oil Processing, China University of Petroleum-Beijing, Beijing, 102249, PR China
| | - Jun Ma
- State Key Laboratory of Urban Water Resource and Environment, School of Environment, Harbin Institute of Technology, Harbin, 150090, PR China
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12
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Lian X, Wang Y. Fast Interfacial Polymerization for Stabilizing Emulsion Droplets with Polymer Films beyond Emulsifiers. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2023; 39:16986-16993. [PMID: 37982603 DOI: 10.1021/acs.langmuir.3c02806] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/21/2023]
Abstract
Stabilizing emulsion droplets with amphiphilic emulsifiers are the current prevailing method, but the extensive use of such amphiphilic substances has caused widespread concerns. In this Perspective, three traditional methods for the stabilization of emulsion droplets according to the type of emulsifiers used are outlined, and the emphasis is placed on the mechanism of steric hindrance for emulsion stabilization. Then, we provide a concise introduction and discussion of the fast interfacial polymerization method as a new strategy for preparing stable emulsifier-free emulsion droplets with a polymer film, including its research background, current progress, and possible development directions. It is anticipated that this paper will promote the development of emulsifier-free emulsion production via fast interfacial polymerization and other related methods.
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Affiliation(s)
- Xiaodong Lian
- Department of Chemistry, Renmin University of China, Beijing 100872, P. R. China
| | - Yapei Wang
- Department of Chemistry, Renmin University of China, Beijing 100872, P. R. China
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13
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Davies K, Allan MG, Nagarajan S, Townsend R, Asokan V, Watson T, Godfrey AR, Maroto-Valer MM, Kuehnel MF, Pitchaimuthu S. Photoelectrocatalytic Surfactant Pollutant Degradation and Simultaneous Green Hydrogen Generation. Ind Eng Chem Res 2023; 62:19084-19094. [PMID: 38020790 PMCID: PMC10655085 DOI: 10.1021/acs.iecr.3c00840] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2023] [Revised: 05/12/2023] [Accepted: 05/14/2023] [Indexed: 12/01/2023]
Abstract
For the first time, we demonstrate a photoelectrocatalysis technique for simultaneous surfactant pollutant degradation and green hydrogen generation using mesoporous WO3/BiVO4 photoanode under simulated sunlight irradiation. The materials properties such as morphology, crystallite structure, chemical environment, optical absorbance, and bandgap energy of the WO3/BiVO4 films are examined and discussed. We have tested the anionic type (sodium 2-naphthalenesulfonate (S2NS)) and cationic type surfactants (benzyl alkyl dimethylammonium compounds (BAC-C12)) as model pollutants. A complete removal of S2NS and BAC-C12 surfactants at 60 and 90 min, respectively, by applying 1.75 V applied potential vs RHE to the circuit, under 1 sun was achieved. An interesting competitive phenomenon for photohole utilization was observed between surfactants and adsorbed water. This led to the formation of H2O2 from water alongside surfactant degradation (anode) and hydrogen evolution (cathode). No byproducts were observed after the direct photohole mediated degradation of surfactants, implying its advantage over other AOPs and biological processes. In the cathode compartment, 82.51 μmol/cm2 and 71.81 μmol/cm2 of hydrogen gas were generated during the BAC-C12 and S2NS surfactant degradation process, respectively, at 1.75 V RHE applied potential.
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Affiliation(s)
| | - Michael G. Allan
- Department
of Chemistry, Faculty of Science and Engineering, Swansea University, Singleton Park, SA2 8PP Swansea, Wales
| | - Sanjay Nagarajan
- Department
of Chemical Engineering, University of Bath, Bath BA2 7AY, U.K.
| | - Rachel Townsend
- Swansea
University Medical School, Faculty of Medicine, Health and Life Science,
Singleton Park, Swansea University, Swansea SA2 8PP, U.K.
| | - Vijayshankar Asokan
- Environmental
Inorganic Chemistry, Department of Chemistry and Chemical Engineering, Chalmers University of Technology, Kemivägen 10, S-412 96 Göthenburg, Sweden
| | - Trystan Watson
- SPECIFIC,
Faculty of Science and Engineering, Swansea
University, Swansea SA2 8PP, Wales
| | - A. Ruth Godfrey
- Swansea
University Medical School, Faculty of Medicine, Health and Life Science,
Singleton Park, Swansea University, Swansea SA2 8PP, U.K.
| | - M. Mercedes Maroto-Valer
- Research
Centre for Carbon Solutions (RCCS), Institute of Mechanical, Processing
and Energy Engineering, School of Engineering and Physical Sciences, Heriot-Watt University, Edinburgh EH14 4AS, U.K.
| | - Moritz F. Kuehnel
- Department
of Chemistry, Faculty of Science and Engineering, Swansea University, Singleton Park, SA2 8PP Swansea, Wales
- Fraunhofer
Institute for Wind Energy Systems IWES, Am Haupttor 4310, 06237 Leuna, Germany
| | - Sudhagar Pitchaimuthu
- SPECIFIC,
Faculty of Science and Engineering, Swansea
University, Swansea SA2 8PP, Wales
- Research
Centre for Carbon Solutions (RCCS), Institute of Mechanical, Processing
and Energy Engineering, School of Engineering and Physical Sciences, Heriot-Watt University, Edinburgh EH14 4AS, U.K.
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14
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Wei T, Zhu XS, Wang QX, Xu KK, Tang FK, Zhang MZ, Lv SW, Ge F. Prussian blue analogues-derived zero valent iron to efficiently activate peroxymonosulfate for phenol degradation triggered via reactive oxygen species and high-valent iron-oxo complexes. ENVIRONMENTAL RESEARCH 2023; 237:116962. [PMID: 37619634 DOI: 10.1016/j.envres.2023.116962] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/06/2023] [Revised: 08/18/2023] [Accepted: 08/22/2023] [Indexed: 08/26/2023]
Abstract
It is of great significance to develop the effective technique to treat phenol-containing wastewater. Herein, Fe-based prussian blue analogues-derived zero valent iron (ZVI) was successfully synthesized by one-step calcination method. Owing to high specific surface area and rich active sites, ZVI-2 possessed excellent performance in charge transfer. Notably, in comparison with conventional ZVI and Fe2+, ZVI-2 can effectively activate peroxymonosulfate (PMS) for achieving rapid degradation of phenol, and the highest removal efficiency of phenol reached 94.9% within 24 min. More importantly, developed ZVI-2/PMS oxidation system with good stability displayed strong anti-interference capability. Interestingly, Fe0 loaded on the surface of ZVI-2 can efficiently break the O-O bond of PMS to generate reactive oxygen species (i.e., SO4•-, OH•, O2•- and 1O2). As main adsorption sites of PMS, the existence of oxygen vacancy promote the formation of high-valent transition metal complexes (namely ZVI-2≡Fe4+=O). Under the combined action of reactive oxygen species and ZVI-2≡Fe4+=O, phenol can be eventually degraded into CO2 and H2O. The possible degradation pathways of phenol were also investigated. Furthermore, proposed ZVI-2/PMS oxidation system displayed great potential for application in the field of wastewater treatment. All in all, current work provided a valuable reference for design and application of Fe-based catalysts in PS-AOPs.
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Affiliation(s)
- Tong Wei
- Nanjing Institute of Environmental Science, MEE, Nanjing, 210042, China; Nanjing Guohuan Institute of Environmental Research CO. LTD, Nanjing, 210042, China
| | - Xin-Sheng Zhu
- Nanjing Institute of Environmental Science, MEE, Nanjing, 210042, China
| | - Qi-Xue Wang
- Everbright Environmental Remediation (Jiangsu) Limited, Nanjing, 210042, China
| | - Ke-Ke Xu
- Nanjing Institute of Environmental Science, MEE, Nanjing, 210042, China
| | - Fu-Kai Tang
- Nanjing Institute of Environmental Science, MEE, Nanjing, 210042, China
| | - Ming-Zhu Zhang
- Nanjing Institute of Environmental Science, MEE, Nanjing, 210042, China; Nanjing Guohuan Institute of Environmental Research CO. LTD, Nanjing, 210042, China
| | - Shi-Wen Lv
- School of Environmental Science and Engineering, Zhejiang Gongshang University, Hangzhou, 310018, China.
| | - Feng Ge
- Nanjing Institute of Environmental Science, MEE, Nanjing, 210042, China.
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15
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Zhang T, Xue Y, Xu M, Zhu Z, Zhang Q, Hong J. Efficient degradation of benzalkonium chloride by FeMn-CA300 catalyst activated persulfate process: Surface hydroxyl potentiation mechanism and degradation pathway. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2023; 333:121986. [PMID: 37315885 DOI: 10.1016/j.envpol.2023.121986] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/20/2023] [Revised: 06/03/2023] [Accepted: 06/07/2023] [Indexed: 06/16/2023]
Abstract
The consumption of disinfectants increased dramatically with the outbreak of the COVID-19 epidemic. Benzalkonium chloride (DDBAC), a cationic surfactant disinfectant for import and export cargoes, is used for effective degradation method. For DDBAC effective degradation, polyhedral Fe-Mn bimetallic catalyst of Prussian blue analogue (FeMn-CA300) was novelty developed for rapid peroxymonosulfate (PMS) activation. Results showed that the Fe/Mn redox and surface hydroxyl groups in the catalyst played an important role in the DDBAC-enhanced degradation. The removal effectiveness of 10 mg L-1 DDBAC was up to 99.4% in 80 min under the initial pH = 7, catalyst dosage of 0.4 g L-1, and PMS concentration of 15 mmol L-1. In addition, FeMn-CA300 had a wide pH applicability range. The results indicated that hydroxyls, sulfate radicals, and singlet oxygen could effectively improve the degradation efficiency, where sulfate radicals played a crucial role. Finally, the corresponding degradation path of DDBAC was further provided according to GC-MS results. The results of this study provide new insights into the degradation of DDBAC, thereby highlighting the great potential of FeMnca300/PMS to control refractory organic compounds in the aqueous phase.
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Affiliation(s)
- Ting Zhang
- College of Chemical Engineering, Huaqiao University, Xiamen, 361021, China; Xiamen Engineering Research Center of Industrial Wastewater Biochemical Treatment, Xiamen, 361021, China; Fujian Provincial Research Center of Industrial Wastewater Biochemical Treatment (Huaqiao University), Xiamen, 361021, China
| | - Yuwei Xue
- College of Chemical Engineering, Huaqiao University, Xiamen, 361021, China; Xiamen Engineering Research Center of Industrial Wastewater Biochemical Treatment, Xiamen, 361021, China; Fujian Provincial Research Center of Industrial Wastewater Biochemical Treatment (Huaqiao University), Xiamen, 361021, China
| | - Mingjun Xu
- College of Chemical Engineering, Huaqiao University, Xiamen, 361021, China; Xiamen Engineering Research Center of Industrial Wastewater Biochemical Treatment, Xiamen, 361021, China; Fujian Provincial Research Center of Industrial Wastewater Biochemical Treatment (Huaqiao University), Xiamen, 361021, China
| | - Ziqi Zhu
- College of Chemical Engineering, Huaqiao University, Xiamen, 361021, China; Xiamen Engineering Research Center of Industrial Wastewater Biochemical Treatment, Xiamen, 361021, China; Fujian Provincial Research Center of Industrial Wastewater Biochemical Treatment (Huaqiao University), Xiamen, 361021, China
| | - Qian Zhang
- College of Chemical Engineering, Huaqiao University, Xiamen, 361021, China; Xiamen Engineering Research Center of Industrial Wastewater Biochemical Treatment, Xiamen, 361021, China; Fujian Provincial Research Center of Industrial Wastewater Biochemical Treatment (Huaqiao University), Xiamen, 361021, China
| | - Junming Hong
- College of Chemical Engineering, Huaqiao University, Xiamen, 361021, China; Xiamen Engineering Research Center of Industrial Wastewater Biochemical Treatment, Xiamen, 361021, China; Fujian Provincial Research Center of Industrial Wastewater Biochemical Treatment (Huaqiao University), Xiamen, 361021, China.
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16
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De S, Das G. Surfactant-induced disaggregation of a quinoxaline AIEgen scaffold: aggregation aptitude in the solid and solution states. SOFT MATTER 2023; 19:6116-6121. [PMID: 37538008 DOI: 10.1039/d3sm00638g] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 08/05/2023]
Abstract
We have designed five propellor-shaped molecules based on the quinoxaline scaffold with a functional group variation. They exhibit aggregation-induced emission, and the responses of these congeners regarding good solvents and poor solvents are investigated both spectroscopically and microscopically. Solid- as well as solution-state parallel analysis of the aggregation facet is laid out. Notably, L2 interacts specifically with a cationic surfactant, unlike other congeners where the mechanism proceeds via disaggregation. Real sample analysis was carried out on freshwater samples as well as waste effluent samples from domestic households and industries, thus projecting the analytical and environmental significance.
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Affiliation(s)
- Sagnik De
- Department of Chemistry, Indian Institute of Technology Guwahati, Guwahati 781039, Assam, India.
| | - Gopal Das
- Department of Chemistry, Indian Institute of Technology Guwahati, Guwahati 781039, Assam, India.
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17
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Araújo C, Carneiro P, Fidelis L, Nascimento B, Antunes M, Viana D, Oliveira P, Torres R, Hazin F, Adam M. Comparative genomic damage among three shark species with different habits: Sublethal impacts of human origin in a protected island environment in the South Atlantic. MARINE POLLUTION BULLETIN 2023; 191:114924. [PMID: 37058835 DOI: 10.1016/j.marpolbul.2023.114924] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/24/2022] [Revised: 02/26/2023] [Accepted: 04/06/2023] [Indexed: 05/13/2023]
Abstract
Elasmobranchs can bioaccumulate and biomagnify pollutants. However, few studies are directed to the effects of pollutants on the health of these animals, and in most cases, are limited to the analysis of biochemical markers. Thus, the incidence of genomic damage among shark species inhabiting a protected ocean island in the South Atlantic was investigated in association with the analysis of pollutants in seawater sample. High levels of genomic damage were identified, especially in Negaprion brevirostris and Galeocerdo cuvier, in addition to interspecific variations that may be related to characteristics such as animal size, metabolism and habits. High concentrations of Surfactants were observed in seawater sample, in addition to low concentrations of Cadmium, Lead, Copper, Chromium, Zinc, Manganese, and Mercury. The results evidenced the potential of shark species as a bioindicator of environmental quality and allowed assessing the anthropic impact on the archipelago, which currently drives its economy through tourism.
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Affiliation(s)
- Camila Araújo
- Evolutionary and Environmental Genomics Laboratory, Department of Zoology, Center for Biological Sciences, Federal University of Pernambuco, Avenida Professor Moraes Rego, Cidade Universitária, 50.760-420 Recife, Pernambuco, Brazil; Laboratory of Fisheries Oceanography, Department of Fisheries and Aquaculture, Federal Rural University of Pernambuco, Rua Dom Manuel de Medeiros, Dois Irmãos, 52.171-030 Recife, Pernambuco, Brazil.
| | - Pedro Carneiro
- Laboratory of Fisheries Oceanography, Department of Fisheries and Aquaculture, Federal Rural University of Pernambuco, Rua Dom Manuel de Medeiros, Dois Irmãos, 52.171-030 Recife, Pernambuco, Brazil
| | - Leonardo Fidelis
- Laboratory of Fisheries Oceanography, Department of Fisheries and Aquaculture, Federal Rural University of Pernambuco, Rua Dom Manuel de Medeiros, Dois Irmãos, 52.171-030 Recife, Pernambuco, Brazil
| | - Bruna Nascimento
- Evolutionary and Environmental Genomics Laboratory, Department of Zoology, Center for Biological Sciences, Federal University of Pernambuco, Avenida Professor Moraes Rego, Cidade Universitária, 50.760-420 Recife, Pernambuco, Brazil; Laboratory of Fisheries Oceanography, Department of Fisheries and Aquaculture, Federal Rural University of Pernambuco, Rua Dom Manuel de Medeiros, Dois Irmãos, 52.171-030 Recife, Pernambuco, Brazil
| | - Marina Antunes
- Evolutionary and Environmental Genomics Laboratory, Department of Zoology, Center for Biological Sciences, Federal University of Pernambuco, Avenida Professor Moraes Rego, Cidade Universitária, 50.760-420 Recife, Pernambuco, Brazil; Laboratory of Fisheries Oceanography, Department of Fisheries and Aquaculture, Federal Rural University of Pernambuco, Rua Dom Manuel de Medeiros, Dois Irmãos, 52.171-030 Recife, Pernambuco, Brazil
| | - Danielle Viana
- Laboratory of Fisheries Oceanography, Department of Fisheries and Aquaculture, Federal Rural University of Pernambuco, Rua Dom Manuel de Medeiros, Dois Irmãos, 52.171-030 Recife, Pernambuco, Brazil
| | - Paulo Oliveira
- Laboratory of Fisheries Oceanography, Department of Fisheries and Aquaculture, Federal Rural University of Pernambuco, Rua Dom Manuel de Medeiros, Dois Irmãos, 52.171-030 Recife, Pernambuco, Brazil
| | - Rodrigo Torres
- Evolutionary and Environmental Genomics Laboratory, Department of Zoology, Center for Biological Sciences, Federal University of Pernambuco, Avenida Professor Moraes Rego, Cidade Universitária, 50.760-420 Recife, Pernambuco, Brazil.
| | - Fábio Hazin
- Laboratory of Fisheries Oceanography, Department of Fisheries and Aquaculture, Federal Rural University of Pernambuco, Rua Dom Manuel de Medeiros, Dois Irmãos, 52.171-030 Recife, Pernambuco, Brazil
| | - Mônica Adam
- Evolutionary and Environmental Genomics Laboratory, Department of Zoology, Center for Biological Sciences, Federal University of Pernambuco, Avenida Professor Moraes Rego, Cidade Universitária, 50.760-420 Recife, Pernambuco, Brazil
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18
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Tsompou A, Kocherbitov V. Surface and bulk mechanisms in repeating treatment of solid surfaces by purified water. Heliyon 2023; 9:e17163. [PMID: 37484311 PMCID: PMC10361314 DOI: 10.1016/j.heliyon.2023.e17163] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2023] [Revised: 06/07/2023] [Accepted: 06/08/2023] [Indexed: 07/25/2023] Open
Abstract
To decrease the negative impact of surfactants, the idea of using purified water in washing has been proposed. Previous studies showed that purified water facilitates the roll-up mechanism by promoting electrostatic interactions between the surface and the soil. However, washing mechanisms can be dependent on the amount of remaining soil. In this work we studied the removal of thin Vaseline films and thicker oil films from hydrophilic surfaces using multiple washing cycles at different temperatures. The Quartz Crystal Microbalance with Dissipation monitoring (QCM-D) and gravimetric analysis were used for thin and thick films respectively. In QCM-D experiments most of the thin film was removed during the first two cycles, while following cycles did not substantially affect washing efficiency; increased temperature facilitated the washing process. Gravimetric analysis showed that the washing of thicker films can be divided into two regimes. During the first, exponential, regime the amount of oil on the surface is high and surface mechanisms, such as roll-up, dominate. Oil droplets are kinetically stabilized in purified water by electrostatic interactions. As the amount of oil on the surface decreases, the second, linear, regime is introduced. The removal of oil occurs by equilibrium bulk mechanisms, where electrostatic interactions are less important.
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Affiliation(s)
- Andriani Tsompou
- Department of Biomedical Science, Malmö University, Malmö, Sweden
- Biofilms Research Center for Biointerfaces, Malmö University, Malmö, Sweden
| | - Vitaly Kocherbitov
- Department of Biomedical Science, Malmö University, Malmö, Sweden
- Biofilms Research Center for Biointerfaces, Malmö University, Malmö, Sweden
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19
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Effect of Surfactants on Reverse Osmosis Membrane Performance. SEPARATIONS 2023. [DOI: 10.3390/separations10030168] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/06/2023] Open
Abstract
The aim of this study was to evaluate the performance of a reverse osmosis (RO) membrane in surfactant removal using various surfactant model aqueous solutions. The separation tests were performed with laboratory scale units in a dead-end configuration. Cellulose Acetate (CA) and Polyamide (PA) RO membranes were used with nonionic, anionic, or cationic surfactants at a wide range of concentrations. Membrane performance was evaluated using permeate flux and total organic carbon (TOC) rejection. The effects of surfactant type and concentration on RO membranes were assessed. Permeate flux of the PA membrane depended on the surfactant type and concentration. The separation of cationic surfactant aqueous solutions yielded the lowest permeate flux, followed by nonionic and anionic surfactant aqueous solutions, respectively. Surfactant adsorption on the membrane surface occurred at very low concentration of cationic and nonionic surfactants due to electrostatic and hydrophobic interactions, respectively, which affected permeate flux, and micelles did not affect the permeate flux of PA membrane. However, for CA membrane the permeate flux was not affected by the feed solution. Both membranes exhibited satisfactory TOC rejection (92–99%). This study highlights the importance of assessing interactions between membrane material and surfactant molecules to mitigate membrane fouling and guarantee a better performance of the RO membrane.
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20
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Devi MK, Yaashikaa PR, Kumar PS, Manikandan S, Oviyapriya M, Varshika V, Rangasamy G. Recent advances in carbon-based nanomaterials for the treatment of toxic inorganic pollutants in wastewater. NEW J CHEM 2023. [DOI: 10.1039/d3nj00282a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/03/2023]
Abstract
Wastewater contains inorganic pollutants, generated by industrial and domestic sources, such as heavy metals, antibiotics, and chemical pesticides, and these pollutants cause many environmental problems.
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21
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Hung CM, Chen CW, Huang CP, Dong CD. Removal of 4-nonylphenol in activated sludge by peroxymonosulfate activated with sorghum distillery residue-derived biochar. BIORESOURCE TECHNOLOGY 2022; 360:127564. [PMID: 35788388 DOI: 10.1016/j.biortech.2022.127564] [Citation(s) in RCA: 13] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/07/2022] [Revised: 06/27/2022] [Accepted: 06/28/2022] [Indexed: 06/15/2023]
Abstract
The presence of 4-nonylphenol (4-NP), an endocrine disrupting chemical, waste activated sludge (WAS) or biosolids at elevated content requires effective method for 4-NP reduction in total sludge management. Herein, sorghum distillery residue-based biochar-activated peroxymonosulfate (SDRBC/PMS) system was studied as pretreatment of WAS. Results indicated 91% of 4-NP removal at pH 6.0 in the presence of 3.1 × 10-6 M and 0.8 g L-1 PMS and SDRBC500, individually. The synergetic effects of singlet oxygen (1O2) and the abundant functional sites (C = O/C-O content) of SDRBC significantly improved 4-NP degradation. The decreased fluorescent dissolved organic matter (DOM) in the sludge also enhanced the pretreatment efficiency. Moreover, the enrichment of the Nitrospira functional bacteria in the microbial community yielded the highest 4-NP degradation in the SDRBC/PMS-pretreated sludge. The SDRBC/PMS system functions mainly via nonradical-mediated oxidation pathway in pretreating WAS in particular and potentially by combined advanced oxidation and biodegradation processes for wastewater treatment in general.
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Affiliation(s)
- Chang-Mao Hung
- Department of Marine Environmental Engineering, National Kaohsiung University of Science and Technology, Kaohsiung City, Taiwan
| | - Chiu-Wen Chen
- Department of Marine Environmental Engineering, National Kaohsiung University of Science and Technology, Kaohsiung City, Taiwan
| | - Chin-Pao Huang
- Department of Civil and Environmental Engineering, University of Delaware, Newark, USA
| | - Cheng-Di Dong
- Department of Marine Environmental Engineering, National Kaohsiung University of Science and Technology, Kaohsiung City, Taiwan.
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