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Hu DD, Zhang YX, Li YD, Zeng JB. Fully biobased hydrogel based on chitosan and tannic acid coated cotton fabric for underwater superoleophobicity and efficient oil/water separation. Int J Biol Macromol 2024; 254:127892. [PMID: 37952799 DOI: 10.1016/j.ijbiomac.2023.127892] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2023] [Revised: 10/15/2023] [Accepted: 11/02/2023] [Indexed: 11/14/2023]
Abstract
Underwater superoleophobic (UWSO) materials have garnered significant attention in separating oil/water mixtures. But, the majority of these materials are made from non-degradable and non-renewable raw materials, polluting the environment and wasting scarce resources while using them. Against this backdrop, this study aimed to fabricate an environmental-friendly UWSO textile using biobased materials. To achieve this, hydrogel consisting of chitosan (CS) and poly(tannic acid) (PTA) were formed and coated on cotton fabric (CTF) via dip-coating followed by oxidative polymerization. CS&PTA hydrogel endowed the CTF with a rough surface and high surface energy, leading to an UWSO CTF with an underwater oil contact angle as high as 166.84°. The CS&PTA/CTF had excellent separation capability toward various oil/water mixtures, showing separation efficiency above 99.84 % and water flux higher than 23, 999 L m-2 h-1. Moreover, CS&PTA/CTF possessed excellent mechanical and environmental stability with underwater superoleophobicity unchanged after sandpaper friction, ultrasonication, organic solvents, NaCl (m/v, 30 %) solution, and acid/base solution immersion, due to the strong interaction between the hydrogel and cotton fabric generated by the mussel-inspired adhesion owing to the presence of PTA. The fully biobased UWSO CTF exhibits great promising to be an alternative to traditional superwetting materials for separation of oil/water mixtures.
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Affiliation(s)
- Dan-Dan Hu
- Chongqing Key Laboratory of Soft-Matter Material Chemistry and Function Manufacturing, School of Chemistry and Chemical Engineering, Southwest University, Chongqing 400715, China
| | - Ye-Xin Zhang
- Chongqing Key Laboratory of Soft-Matter Material Chemistry and Function Manufacturing, School of Chemistry and Chemical Engineering, Southwest University, Chongqing 400715, China
| | - Yi-Dong Li
- Chongqing Key Laboratory of Soft-Matter Material Chemistry and Function Manufacturing, School of Chemistry and Chemical Engineering, Southwest University, Chongqing 400715, China
| | - Jian-Bing Zeng
- Chongqing Key Laboratory of Soft-Matter Material Chemistry and Function Manufacturing, School of Chemistry and Chemical Engineering, Southwest University, Chongqing 400715, China.
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2
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Ao Y, He J, Chen K, Zhu M, Ye F, Shen L, Yang Y, Feng X, Zhang Z, Tang Y, Mi Y. Amine-functionalized cotton for the treatment of oily wastewater. ENVIRONMENTAL RESEARCH 2023; 237:116882. [PMID: 37574103 DOI: 10.1016/j.envres.2023.116882] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/08/2022] [Revised: 08/08/2023] [Accepted: 08/11/2023] [Indexed: 08/15/2023]
Abstract
Common commercial demulsifiers are typically made from ethylene oxide and propylene oxide. The production process is dangerous and complex, with poor adaptability and high cost. In this work, cotton modified with polyethylene polyamine was utilized as a demulsifier for the treatment of oily wastewater. The chemical structure and morphology of the as-prepared sample (CPN) were characterized by IR spectrum and SEM. The effect of CPN dosage, pH value, and salinity on the demulsification performance of oily wastewater was explored through the bottle tests. The results showed that the light transmittance of separated water was 81.7% and the corresponding deoiling rate was 98.5% when a CPN dosage of 25 mg/L was used at room temperature for 30 min. The interfacial properties were also systematically investigated, and the results indicated that CPN had better interfacial activity and a stronger reduction capability of interfacial tension compared to asphaltenes. The finding initiated and accelerated the demulsification process of oily wastewater. Based on the outstanding performance of this biomass-derived demulsifier, it shows promising potential for application in the treatment of oily wastewater.
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Affiliation(s)
- Yiling Ao
- School of Chemistry & Environmental Engineering, Yangtze University, Jingzhou, 434023, PR China
| | - Ji'an He
- CNPC Chuanqing Drilling Engineering Co. Ltd., Guanghan, 618300, PR China
| | - Keming Chen
- CNPC Chuanqing Drilling Engineering Co. Ltd., Guanghan, 618300, PR China
| | - Mingzhao Zhu
- The 3rd Oil Production Plant, PetroChina Changqing Oilfield Company, Yan'an, 717500, PR China
| | - Fan Ye
- School of Chemistry & Environmental Engineering, Yangtze University, Jingzhou, 434023, PR China
| | - Liwei Shen
- School of Chemistry & Environmental Engineering, Yangtze University, Jingzhou, 434023, PR China
| | - Ying Yang
- School of Chemistry & Environmental Engineering, Yangtze University, Jingzhou, 434023, PR China
| | - Xuening Feng
- School of Chemistry & Environmental Engineering, Yangtze University, Jingzhou, 434023, PR China
| | - Zejun Zhang
- School of Chemistry & Environmental Engineering, Yangtze University, Jingzhou, 434023, PR China
| | - Yuqi Tang
- School of Chemistry & Environmental Engineering, Yangtze University, Jingzhou, 434023, PR China
| | - Yuanzhu Mi
- School of Chemistry & Environmental Engineering, Yangtze University, Jingzhou, 434023, PR China.
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Zhang C, Chen X, Chen M, Ding N, Liu H. Response Surface Optimization on Ferrate-Assisted Coagulation Pretreatment of SDBS-Containing Strengthened Organic Wastewater. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2023; 20:5008. [PMID: 36981918 PMCID: PMC10049197 DOI: 10.3390/ijerph20065008] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 01/31/2023] [Revised: 03/03/2023] [Accepted: 03/08/2023] [Indexed: 06/18/2023]
Abstract
Sodium dodecylbenzene sulfonate (SDBS), an anionic surfactant, has both hydrophilic and lipophilic properties and is widely used in daily production and life. The SDBS-containing organic wastewater is considered difficult to be degraded, which is harmful to the water environment and human health. In this study, ferrate-assisted coagulation was applied to treat SDBS wastewater. Firstly, a single-factor experiment was conducted to investigate the effect of the Na2FeO4 dosage, polyaluminum chloride (PAC) dosage, pH and temperature on the treatment efficiency of SDBS wastewater; then, a response surface optimization experiment was further applied to obtain the optimized conditions for the SDBS treatment. According to the experimental results, the optimal treatment conditions were shown as follows: the Na2FeO4 dosage was 57 mg/L, the PAC dosage was 5 g/L and pH was 8, under which the chemical oxygen demand (COD) removal rate was 90%. Adsorption bridging and entrapment in the floc structure were the main mechanisms of pollution removal. The ferrate-assisted coagulation treatment of strengthened SDBS wastewater was verified by a response surface experiment to provide fundamental understandings for the treatment of the surfactant.
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Affiliation(s)
- Chunxin Zhang
- Jiangsu Key Laboratory of Environmental Science and Technology, School of Environmental Science and Engineering, Suzhou University of Science and Technology, Suzhou 215009, China
| | - Xin Chen
- Jiangsu Key Laboratory of Environmental Science and Technology, School of Environmental Science and Engineering, Suzhou University of Science and Technology, Suzhou 215009, China
| | - Meng Chen
- Jiangsu Key Laboratory of Environmental Science and Technology, School of Environmental Science and Engineering, Suzhou University of Science and Technology, Suzhou 215009, China
| | - Ning Ding
- School of Ecological and Environment, Beijing Technology and Business University, Beijing 100048, China
| | - Hong Liu
- Jiangsu Key Laboratory of Environmental Science and Technology, School of Environmental Science and Engineering, Suzhou University of Science and Technology, Suzhou 215009, China
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Synthesis and Demulsification Properties of Poly (DMDAAC- co-DAMBAC) (9:1) Copolymer. Polymers (Basel) 2023; 15:polym15030562. [PMID: 36771863 PMCID: PMC9920301 DOI: 10.3390/polym15030562] [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: 11/22/2022] [Revised: 12/08/2022] [Accepted: 01/18/2023] [Indexed: 01/24/2023] Open
Abstract
Utilizing the copolymerization modification of dimethyl diallyl ammonium chloride (DMDAAC), the high positive charge density of the copolymer could be maintained, thereby facilitating the deficiency of its monomer in the application. In this paper, poly (DMDAAC-co-DAMBAC) (9:1) was synthesized with an aqueous polymerization method using DMDAAC and methyl benzyl diallyl ammonium chloride (DAMBAC) as monomers and 2,2'-azobis [2-methylpropionamidine] dihydrochloride (V50) as an initiator. Targeted to the product's weight-average relative molecular mass (Mw), the response surface methodology (RSM) was used to optimize the preparation process. The optimal process conditions were obtained as follows: w (M) = 80.0%, m (V50):m (M) = 0.00700%, m (Na4EDTA):m (M) = 0.00350%, T1 = 50.0 °C, T2 = 60.0 °C, and T3 = 72.5 °C. The intrinsic viscosity ([η]) of the product was 1.780 dL/g, and the corresponding double bond conversion (Conv.) was 90.25 %. Poly (DMDAAC-co-DAMBAC) (9:1) revealed a highest Mw of 5.637 × 105, together with the polydispersity index d (Mw/Mn) as 1.464. For the demulsification performance of simulated crude oil O/W emulsions, the demulsification rate of poly (DMDAAC-co-DAMBAC) (9:1) could reach 97.73%. Our study has illustrated that the copolymerization of DMDAAC and a small amount of DAMBAC with poor reactivity could significantly improve the relative molecular weight of the polymer, enhance its lipophilicity, and thus the application scope of the polymer.
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Liu ZZ, Gu HW, Guo XZ, Geng T, Li CL, Liu GX, Wang ZS, Li XC, Chen W. Tracing sources of oilfield wastewater based on excitation-emission matrix fluorescence spectroscopy coupled with chemical pattern recognition techniques. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2022; 281:121596. [PMID: 35810671 DOI: 10.1016/j.saa.2022.121596] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/31/2022] [Revised: 06/11/2022] [Accepted: 07/01/2022] [Indexed: 06/15/2023]
Abstract
In order to prevent the illegal discharge of oilfield wastewater, this work proposed excitation-emission matrix fluorescence (EEMF) spectroscopy coupled with two kinds of chemical pattern recognition methods for tracing the sources of oilfield wastewater. The first pattern recognition method was built from the relative concentrations extracted by alternating trilinear decomposition (ATLD) based on partial least squares-discriminant analysis (PLS-DA) algorithm, and the other one was modeled based on strictly multi-way partial least squares-discriminant analysis (N-PLS-DA). Both methods showed good discrimination abilities for oilfield wastewater samples from three different sources. The total recognition rates of the training and prediction sets are 100%, the values of sensitivity and selectivity are 1. This study showed that EEMF spectroscopy combined with chemical pattern recognition techniques could be used as a potential tool for tracing the sources of oilfield wastewater.
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Affiliation(s)
- Zhuo-Zhuang Liu
- State Key Laboratory of Petroleum Pollution Control, CNPC Research Institute of Safety and Environmental Technology, Beijing 102206, China; Hubei Engineering Research Center for Clean Production and Pollutant Control of Oil and Gas Fields, College of Chemistry and Environmental Engineering, Yangtze University, Jingzhou 434023, China
| | - Hui-Wen Gu
- State Key Laboratory of Petroleum Pollution Control, CNPC Research Institute of Safety and Environmental Technology, Beijing 102206, China; Hubei Engineering Research Center for Clean Production and Pollutant Control of Oil and Gas Fields, College of Chemistry and Environmental Engineering, Yangtze University, Jingzhou 434023, China.
| | - Xian-Zhe Guo
- State Key Laboratory of Petroleum Pollution Control, CNPC Research Institute of Safety and Environmental Technology, Beijing 102206, China; Hubei Engineering Research Center for Clean Production and Pollutant Control of Oil and Gas Fields, College of Chemistry and Environmental Engineering, Yangtze University, Jingzhou 434023, China
| | - Tao Geng
- State Key Laboratory of Petroleum Pollution Control, CNPC Research Institute of Safety and Environmental Technology, Beijing 102206, China; Hubei Engineering Research Center for Clean Production and Pollutant Control of Oil and Gas Fields, College of Chemistry and Environmental Engineering, Yangtze University, Jingzhou 434023, China
| | - Chun-Li Li
- State Key Laboratory of Petroleum Pollution Control, CNPC Research Institute of Safety and Environmental Technology, Beijing 102206, China; Hubei Engineering Research Center for Clean Production and Pollutant Control of Oil and Gas Fields, College of Chemistry and Environmental Engineering, Yangtze University, Jingzhou 434023, China
| | - Guo-Xin Liu
- State Key Laboratory of Petroleum Pollution Control, CNPC Research Institute of Safety and Environmental Technology, Beijing 102206, China; Hubei Engineering Research Center for Clean Production and Pollutant Control of Oil and Gas Fields, College of Chemistry and Environmental Engineering, Yangtze University, Jingzhou 434023, China
| | - Zhan-Sheng Wang
- State Key Laboratory of Petroleum Pollution Control, CNPC Research Institute of Safety and Environmental Technology, Beijing 102206, China
| | - Xing-Chun Li
- State Key Laboratory of Petroleum Pollution Control, CNPC Research Institute of Safety and Environmental Technology, Beijing 102206, China
| | - Wu Chen
- State Key Laboratory of Petroleum Pollution Control, CNPC Research Institute of Safety and Environmental Technology, Beijing 102206, China; Hubei Engineering Research Center for Clean Production and Pollutant Control of Oil and Gas Fields, College of Chemistry and Environmental Engineering, Yangtze University, Jingzhou 434023, China.
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Wei L, Zhang L, Liu C, Jia X. Synthesis and Study of New Nonionic Polyether Water Clarifier for Oily Wastewater. CAN J CHEM ENG 2022. [DOI: 10.1002/cjce.24613] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Lixin Wei
- Key Laboratory of Enhanced Oil Recovery(Northeast Petroleum University), Ministry of Education Daqing
| | - Lin Zhang
- Key Laboratory of Enhanced Oil Recovery(Northeast Petroleum University), Ministry of Education Daqing
| | - Chao Liu
- Key Laboratory of Enhanced Oil Recovery(Northeast Petroleum University), Ministry of Education Daqing
| | - Xinlei Jia
- Department of Chemical Engineering and Safety Binzhou University Binzhou China
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Fabrication of PDMS@Fe 3O 4/MS Composite Materials and Its Application for Oil-Water Separation. MATERIALS 2021; 15:ma15010115. [PMID: 35009260 PMCID: PMC8746228 DOI: 10.3390/ma15010115] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/30/2021] [Revised: 12/19/2021] [Accepted: 12/22/2021] [Indexed: 11/16/2022]
Abstract
The discharge of oily wastewater and oil spills at sea are the current difficulties in water pollution control. This problem often leads to terrible disasters. Therefore, the effective realization of oil-water separation is a very challenging problem. Superhydrophobic sponge is a promising oil-absorbing material. In this article, we reported a superhydrophobic sponge with nano-Fe3O4 for oil-water separation. The addition of nano-Fe3O4 allows the sponge to be recycled under the action of magnetic force. The sponge has the advantages of low cost, simple preparation and efficient oil-water separation. This kind of sponge is very worthy of promotion for the treatment of oily wastewater and marine oil spill accidents.
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Huang Z, Wang D, Tripathi I, Chen Z, Zhou J, Chen Q. Simultaneously enhanced surfactant flushing of diesel contaminated soil column and qualified emission of effluent. JOURNAL OF ENVIRONMENTAL SCIENCE AND HEALTH. PART A, TOXIC/HAZARDOUS SUBSTANCES & ENVIRONMENTAL ENGINEERING 2020; 55:1475-1483. [PMID: 32941096 DOI: 10.1080/10934529.2020.1808412] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/27/2019] [Revised: 08/05/2020] [Accepted: 08/05/2020] [Indexed: 06/11/2023]
Abstract
Seven surfactants were selected as candidate agents for in situ soil column flushing. Column flushing lacks the interaction between surfactants and contaminants, so efficiency is not easy to improve. Microbubbles generated in situ may adhere to the contaminant diesel. Thereafter, the bubbles were mobilized to lift the multi-system oil to the top layer. This process must be attributed to the increased column flushing efficiency of diesel removal. Compared with a single solution, using randomly methylated beta-cyclodextrin (RAMEB) and microbubble enhancement, the diesel removal of column flushing increased by 30.7%. Compared with the existing conditions (5.25 × 10-4 cm s-1), the hydraulic conductivity of loam soil (3.74 × 10-3 cm s-1) increased by 7.1 times after the continued operation of the two processes. The oil layer was collected for further reuse. After three treatments, the effluent for the RAMEB was more than 85%. The collected effluent was treated with a synthetic absorbent and then qualifiedly discharged with a TOC value of only 2.6 mg L-1. By combining surfactant flushing with microbubbles and other equipment, not only can the reaction time be effectively saved, but organic pollutants could be concentrated and reused in the soil, so no additional treatment was required.
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Affiliation(s)
- Zhaolu Huang
- School of Environmental Science and Engineering, Donghua University, Shanghai, China
- Illinois Sustainable Technology Center, Prairie Research Institute, University of Illinois at Urbana Champaign, Champaign, Illinois, USA
- Department of Land, Air and Water Resources, University of California, Davis, CA USA
| | - Daoyuan Wang
- Departments of Bioengineering, Materials Science and Engineering, University of Illinois at Urbana Champaign, Urbana, Illinois, USA
| | - Indu Tripathi
- Illinois Sustainable Technology Center, Prairie Research Institute, University of Illinois at Urbana Champaign, Champaign, Illinois, USA
- Departments of Bioengineering, Materials Science and Engineering, University of Illinois at Urbana Champaign, Urbana, Illinois, USA
| | - Zhao Chen
- School of Computer Science and Technology, Donghua University, Shanghai, China
| | - Juan Zhou
- School of Environmental Science and Engineering, Donghua University, Shanghai, China
- Shanghai Institution of Pollution Control and Ecological Security, Shanghai, P.R. China
| | - Quanyuan Chen
- School of Environmental Science and Engineering, Donghua University, Shanghai, China
- Shanghai Institution of Pollution Control and Ecological Security, Shanghai, P.R. China
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9
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An insight into the solar demulsification of highly emulsified water produced from oilfields by monitoring the viscosity, zeta potential, particle size and rheology. Colloids Surf A Physicochem Eng Asp 2019. [DOI: 10.1016/j.colsurfa.2019.05.012] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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10
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Cai Q, Zhu Z, Chen B, Zhang B. Oil-in-water emulsion breaking marine bacteria for demulsifying oily wastewater. WATER RESEARCH 2019; 149:292-301. [PMID: 30465987 DOI: 10.1016/j.watres.2018.11.023] [Citation(s) in RCA: 45] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/19/2018] [Revised: 11/06/2018] [Accepted: 11/12/2018] [Indexed: 06/09/2023]
Abstract
Oily wastewater is a large waste stream produced by a number of industries. This wastewater often forms stable oil-in-water (O/W) emulsion. These emulsions require demulsification in order to effectively treat the water prior to release. Although biological demulsification of O/W emulsion has advantages over traditional approaches, its development is at a preliminary stage with few demulsifying bacteria reported and a need for effective screening methods for such bacteria. In this study, thirty-seven marine O/W emulsion demulsifying bacterial strains belonging to 5 genera and 15 species were reported. Cell hydrophobicity and interfacial activity played key roles in the emulsion breaking. One of the highly effective demulsifying bacteria, Halomonas venusta strain N3-2A was identified and characterized. Both its extracellular biosurfactant and cell surface contributed to demulsification resulting in breaking of 92.5% of the emulsion within 24 h. A high throughput and effective screening strategy targeting O/W emulsion breaking bacteria using oil spreading test coupled with cell hydrophobicity test was proposed. In addition, the 37 demulsifying bacteria showed a certain degree of species/genus specific patterns of surface activity and cell hydrophobicity. The reported bacteria and the screening strategy have promising potential for the biological demulsification of O/W emulsions and oily wastewater treatment.
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Affiliation(s)
- Qinhong Cai
- The Northern Region Persistent Organic Pollution Control (NRPOP) Laboratory, Faculty of Engineering and Applied Science, Memorial University of Newfoundland, St. John's, Newfoundland, A1B 3X5, Canada
| | - Zhiwen Zhu
- The Northern Region Persistent Organic Pollution Control (NRPOP) Laboratory, Faculty of Engineering and Applied Science, Memorial University of Newfoundland, St. John's, Newfoundland, A1B 3X5, Canada
| | - Bing Chen
- The Northern Region Persistent Organic Pollution Control (NRPOP) Laboratory, Faculty of Engineering and Applied Science, Memorial University of Newfoundland, St. John's, Newfoundland, A1B 3X5, Canada
| | - Baiyu Zhang
- The Northern Region Persistent Organic Pollution Control (NRPOP) Laboratory, Faculty of Engineering and Applied Science, Memorial University of Newfoundland, St. John's, Newfoundland, A1B 3X5, Canada.
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