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Yousefi A, Etemadi H, Hermani M, Aftabi F, Hosseinzadeh G. Preparation and Performance Evaluation of PVC/PDA-modified Al2O3 Nanocomposite Membranes in Oily Wastewater Treatment. J Inorg Organomet Polym Mater 2023. [DOI: 10.1007/s10904-023-02559-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/12/2023]
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2
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Enriching Fe3O4@MoS2 composites in surface layer to fabricate polyethersulfone (PES) composite membrane: The improved performance and mechanisms. Sep Purif Technol 2022. [DOI: 10.1016/j.seppur.2022.122178] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
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3
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High performance and sustainable CNF membrane via facile in-situ envelopment of hydrochar for water treatment. Carbohydr Polym 2022; 296:119948. [DOI: 10.1016/j.carbpol.2022.119948] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2022] [Accepted: 07/30/2022] [Indexed: 12/25/2022]
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4
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Fahrina A, Arahman N, Aprilia S, Bilad MR, Silmina S, Sari WP, Sari IM, Gunawan P, Pasaoglu ME, Vatanpour V, Koyuncu I, Rajabzadeh S. Functionalization of PEG-AgNPs Hybrid Material to Alleviate Biofouling Tendency of Polyethersulfone Membrane. Polymers (Basel) 2022; 14:polym14091908. [PMID: 35567077 PMCID: PMC9102394 DOI: 10.3390/polym14091908] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2022] [Revised: 04/28/2022] [Accepted: 05/02/2022] [Indexed: 01/25/2023] Open
Abstract
Membrane-based processes are a promising technology in water and wastewater treatments, to supply clean and secure water. However, during membrane filtration, biofouling phenomena severely hamper the performance, leading to permanent detrimental impacts. Moreover, regular chemical cleaning is ineffective in the long-run for overcoming biofouling, because it weakens the membrane structure. Therefore, the development of a membrane material with superior anti-biofouling performance is seen as an attractive option. Hydrophilic-anti-bacterial precursor polyethylene glycol-silver nanoparticles (PEG-AgNPs) were synthesized in this study, using a sol-gel method, to mitigate biofouling on the polyethersulfone (PES) membrane surface. The functionalization of the PEG-AgNP hybrid material on a PES membrane was achieved through a simple blending technique. The PES/PEG-AgNP membrane was manufactured via the non-solvent induced phase separation method. The anti-biofouling performance was experimentally measured as the flux recovery ratio (FRR) of the prepared membrane, before and after incubation in E. coli culture for 48 h. Nanomaterial characterization confirmed that the PEG-AgNPs had hydrophilic-anti-bacterial properties. The substantial improvements in membrane performance after adding PEG-AgNPs were evaluated in terms of the water flux and FRR after the membranes experienced biofouling. The results showed that the PEG-AgNPs significantly increased the water flux of the PES membrane, from 2.87 L·m−2·h−1 to 172.84 L·m−2·h−1. The anti-biofouling performance of the PES pristine membrane used as a benchmark showed only 1% FRR, due to severe biofouling. In contrast, the incorporation of PEG-AgNPs in the PES membrane decreased live bacteria by 98%. It enhanced the FRR of anti-biofouling up to 79%, higher than the PES/PEG and PES/Ag membranes.
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Affiliation(s)
- Afrillia Fahrina
- Doctoral Program, School of Engineering, Post Graduate Program, Universitas Syiah Kuala, Jl. Syeh A. Rauf, No. 7, Banda Aceh 23111, Indonesia;
- Department of Chemical Engineering, Universitas Syiah Kuala, Jl. Syeh A. Rauf, No. 7, Banda Aceh 23111, Indonesia; (S.A.); (S.S.); (W.P.S.); (I.M.S.)
| | - Nasrul Arahman
- Department of Chemical Engineering, Universitas Syiah Kuala, Jl. Syeh A. Rauf, No. 7, Banda Aceh 23111, Indonesia; (S.A.); (S.S.); (W.P.S.); (I.M.S.)
- Graduate School of Environmental Management, Universitas Syiah Kuala, Jl. Tgk. Chik Pante Kulu No. 5, Banda Aceh 23111, Indonesia
- Research Center for Environmental and Natural Resources, Universitas Syiah Kuala, Jl. Hamzah Fansuri, No. 4, Banda Aceh 23111, Indonesia
- Atsiri Research Center, PUI, Universitas Syiah Kuala, Jl. Syeh A Rauf, No. 5, Banda Aceh 23111, Indonesia
- Correspondence:
| | - Sri Aprilia
- Department of Chemical Engineering, Universitas Syiah Kuala, Jl. Syeh A. Rauf, No. 7, Banda Aceh 23111, Indonesia; (S.A.); (S.S.); (W.P.S.); (I.M.S.)
- Graduate School of Environmental Management, Universitas Syiah Kuala, Jl. Tgk. Chik Pante Kulu No. 5, Banda Aceh 23111, Indonesia
| | - Muhammad Roil Bilad
- Faculty of Integrated Technologies, Universiti Brunei Darussalam, Jalan Tungku Link, Gadong BE 1410, Brunei Darussalam;
| | - Silmina Silmina
- Department of Chemical Engineering, Universitas Syiah Kuala, Jl. Syeh A. Rauf, No. 7, Banda Aceh 23111, Indonesia; (S.A.); (S.S.); (W.P.S.); (I.M.S.)
| | - Widia Puspita Sari
- Department of Chemical Engineering, Universitas Syiah Kuala, Jl. Syeh A. Rauf, No. 7, Banda Aceh 23111, Indonesia; (S.A.); (S.S.); (W.P.S.); (I.M.S.)
| | - Indah Maulana Sari
- Department of Chemical Engineering, Universitas Syiah Kuala, Jl. Syeh A. Rauf, No. 7, Banda Aceh 23111, Indonesia; (S.A.); (S.S.); (W.P.S.); (I.M.S.)
| | - Poernomo Gunawan
- School of Chemical and Biomedical Engineering, Nanyang Technological, University Singapore, Singapore 627833, Singapore;
| | - Mehmet Emin Pasaoglu
- National Research Center on Membrane Technologies, Istanbul Technical University, Maslak, Istanbul 34469, Turkey; (M.E.P.); (V.V.); (I.K.)
- Department of Environmental Engineering, Istanbul Technical University, Maslak, Istanbul 34469, Turkey
| | - Vahid Vatanpour
- National Research Center on Membrane Technologies, Istanbul Technical University, Maslak, Istanbul 34469, Turkey; (M.E.P.); (V.V.); (I.K.)
- Department of Environmental Engineering, Istanbul Technical University, Maslak, Istanbul 34469, Turkey
- Department of Applied Chemistry, Faculty of Chemistry, Kharazmi University, Tehran 15719-14911, Iran
| | - Ismail Koyuncu
- National Research Center on Membrane Technologies, Istanbul Technical University, Maslak, Istanbul 34469, Turkey; (M.E.P.); (V.V.); (I.K.)
| | - Saeid Rajabzadeh
- Research Center for Membrane and Film Technology, Department of Chemical Science and Engineering, Kobe University, Rokkodai-Cho 1-1, Nadaku, Kobe 657-0000, Japan;
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5
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Vatanpour V, Karatas O, Amiri S, Rajabi HR, Koyuncu I, Khataee A. Different metal-doped ZnS quantum dots photocatalysts for enhancing the permeability and antifouling performances of polysulfone membranes with and without UV irradiation. CHEMOSPHERE 2022; 294:133705. [PMID: 35065176 DOI: 10.1016/j.chemosphere.2022.133705] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/28/2021] [Revised: 01/08/2022] [Accepted: 01/18/2022] [Indexed: 06/14/2023]
Abstract
In this study, the effect of three different transition metal ion dopants (Mn2+, Fe2+, and Co2+) on the characteristics of zinc sulfide (ZnS) quantum dots (QDs) was investigated and the obtained QDs photocatalysts were applied for the modification of polysulfone (PSf) mixed matrix membranes to reduce membrane fouling. The synthesized QDs and fabricated membranes were fully identified with SEM, TEM, AFM, FTIR analyses, and also underwent porosity and contact angle tests. Flux recovery ratios (FRR) significantly increased from 69.8% (bare) to 85.0% (1% Fe-doped ZnS QDs) after modification of membranes with metal-doped QDs. The contact angles of the prepared membranes decreased with doping of dissimilar metals, therefore hydrophilicity increased, and reversible/non-reversible blockages were improved. Besides, the use of UV irradiation during the washing of the membranes increased the FRR of the photocatalytic activated membranes to 91.2%. Compared to the bare PSf membrane in dye solution filtration, 1% Fe-doped ZnS QDs membrane yielded twice as much flux and 15% higher FRR results. Therefore, the results proved that metal-doped QDs can be used in the modification of PSf membranes with high efficiency.
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Affiliation(s)
- Vahid Vatanpour
- National Research Center on Membrane Technologies, Istanbul Technical University, Maslak, 34469, Istanbul, Turkey; Department of Applied Chemistry, Faculty of Chemistry, Kharazmi University, 15719-14911, Tehran, Iran; Environmental Engineering Department, Istanbul Technical University, Maslak, 34469, Istanbul, Turkey.
| | - Okan Karatas
- Department of Environmental Engineering, Gebze Technical University, 41400, Gebze, Turkey; Department of Environmental Engineering, Bursa Technical University, 16310, Bursa, Turkey
| | - Saba Amiri
- Department of Applied Chemistry, Faculty of Chemistry, Kharazmi University, 15719-14911, Tehran, Iran
| | | | - Ismail Koyuncu
- National Research Center on Membrane Technologies, Istanbul Technical University, Maslak, 34469, Istanbul, Turkey; Environmental Engineering Department, Istanbul Technical University, Maslak, 34469, Istanbul, Turkey
| | - Alireza Khataee
- Department of Environmental Engineering, Gebze Technical University, 41400, Gebze, Turkey; Research Laboratory of Advanced Water and Wastewater Treatment Processes, Department of Applied Chemistry, Faculty of Chemistry, University of Tabriz, 51666-16471, Tabriz, Iran.
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6
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Elakkiya S, Arthanareeswaran G. Evaluation of membrane tailored with biocompatible halloysite‒polyaniline nanomaterial for efficient removal of carcinogenic disinfection by‒products precursor from water. ENVIRONMENTAL RESEARCH 2022; 204:112408. [PMID: 34800534 DOI: 10.1016/j.envres.2021.112408] [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: 09/24/2021] [Revised: 11/12/2021] [Accepted: 11/13/2021] [Indexed: 06/13/2023]
Abstract
Humic acid (HA) is the main component of natural organic matter that generates carcinogenic by‒products during disinfection and its removal from water resources is challenging. Biocompatible halloysite (HNTs) nanomaterial decorated with polyaniline (HNTs‒PANI) was synthesized via polymerization technique. HNTs‒PANI was added to prepare polyethersulfone mixed matrix membranes (MMMs). The influence of HNTs‒PANI concentration on HA removal efficiency was studied by varying the HNTs‒PANI (0.5, 1 and 1.5 wt%). The characterization studies of MMMs revealed that the addition of HNTs‒PANI improved the morphology of the membranes, surface properties, chemical stability and thermal property. The amine and hydroxyl groups within the MMMs improved the membrane wettability. The addition of HNTs‒PANI within the MMMs had significantly enhanced the pure water flux and HA filtration. YHP2 MMM with 1 wt% of HNTs‒PANI demonstrated sieving coefficient of 0.10 and the highest HA removal efficiency of 91% greater than the neat PES membrane. Furthermore, the antifouling property of the MMMs was studied using HA as foulant. 1 wt% of HNTs‒PANI added MMM showed a high flux recovery ratio (94.9%) with low total fouling of 12% and low irreversible fouling of 5%, respectively. Thus, HNTs‒PANI was an efficient nanomaterial for enhancing the pure water flux, removal efficiency and antifouling property to treat water contaminated with HA.
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Affiliation(s)
- S Elakkiya
- Membrane Research Laboratory, Department of Chemical Engineering, National Institute of Technology, Tiruchirappalli, 620015, India
| | - G Arthanareeswaran
- Membrane Research Laboratory, Department of Chemical Engineering, National Institute of Technology, Tiruchirappalli, 620015, India.
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7
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Novel photocatalytic polyether sulphone ultrafiltration (UF) membrane reinforced with oxygen-deficient Tungsten Oxide (WO2.89) for Congo red dye removal. Chem Eng Res Des 2022. [DOI: 10.1016/j.cherd.2021.11.015] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
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8
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Huang Z, Zeng Q, Liu Y, Xu Y, Li R, Hong H, Shen L, Lin H. Facile synthesis of 2D TiO2@MXene composite membrane with enhanced separation and antifouling performance. J Memb Sci 2021. [DOI: 10.1016/j.memsci.2021.119854] [Citation(s) in RCA: 76] [Impact Index Per Article: 25.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
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9
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Kali S, Khan M, Ghaffar MS, Rasheed S, Waseem A, Iqbal MM, Bilal Khan Niazi M, Zafar MI. Occurrence, influencing factors, toxicity, regulations, and abatement approaches for disinfection by-products in chlorinated drinking water: A comprehensive review. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2021; 281:116950. [PMID: 33819670 DOI: 10.1016/j.envpol.2021.116950] [Citation(s) in RCA: 77] [Impact Index Per Article: 25.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/24/2020] [Revised: 03/09/2021] [Accepted: 03/12/2021] [Indexed: 06/12/2023]
Abstract
Disinfection is considered as a vital step to ensure the supply of clean and safe drinking water. Various approaches are adopted for this purpose; however, chlorination is highly preferred all over the world. This method is opted owing to its several advantages. However, it leads to the formation of certain by-products. These chlorination disinfection by-products (DBPs) are genotoxic, carcinogenic and mutagenic. Still chlorination is being practiced worldwide. Present review gives insights into the occurrence, toxicity and factors affecting the formation of regulated (THMs, HAAs) and emerging DBPs (N-DBPs, HKs, HAs and aromatic DBPs) found in drinking water. Furthermore, remediation techniques used to control DBPs have also been summarized here. Key findings are: (i) concentration of regulated DBPs surpassed the permissible limit in most of the regions, (ii) high chlorine dose, high NOM, more reaction time (up to 3 h) and high temperature (up to 30 °C) enhance the formation of THMs and HAAs, (iii) high pH favors the formation of THMs while low pH is suitable of the formation of HAAs, (iv) high NOM, low temperature, low chlorine dose and moderate pH favors the formation of unstable DBPs (N-DBPs, HKs and HAs), (v) DBPs are toxic not only for humans but for aquatic fauna as well, (vi) membrane technologies, enhanced coagulation and AOPs remove NOM, (vii) adsorption, air stripping and other physical and chemical methods are post-formation approaches (viii) step-wise chlorination is assumed to be an efficient method to reduce DBPs formation without any treatment. Toxicity data revealed that N-DBPs are found to be more toxic than C-DBPs and aromatic DBPs than aliphatic DBPs. In majority of the studies, merely THMs and HAAs have been studied and USEPA has regulated just these two groups. Future studies should focus on emerging DBPs and provide information regarding their regulation.
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Affiliation(s)
- Sundas Kali
- Department of Environmental Sciences, Faculty of Biological Sciences, Quaid-i-Azam University, Islamabad, 45320, Pakistan.
| | - Marina Khan
- Department of Environmental Sciences, Faculty of Biological Sciences, Quaid-i-Azam University, Islamabad, 45320, Pakistan.
| | - Muhammad Sheraz Ghaffar
- Department of Environmental Sciences, Faculty of Biological Sciences, Quaid-i-Azam University, Islamabad, 45320, Pakistan.
| | - Sajida Rasheed
- Department of Biotechnology, Faculty of Sciences, University of Kotli, Azad Jamu Kashmir, Pakistan.
| | - Amir Waseem
- Department of Chemistry, Quaid-i-Azam University, Islamabad, 45320, Pakistan.
| | - Muhammad Mazhar Iqbal
- Laboratory of Analytical Chemistry and Applied Eco-chemistry, Department of Applied Analytical and Physical Chemistry, Ghent University, Ghent, Belgium; Soil and Water Testing Laboratory, Department of Agriculture, Chiniot, Government of Punjab, Pakistan.
| | - Muhammad Bilal Khan Niazi
- Department of Chemical Engineering, National University of Sciences and Technology, Islamabad, Pakistan.
| | - Mazhar Iqbal Zafar
- Department of Environmental Sciences, Faculty of Biological Sciences, Quaid-i-Azam University, Islamabad, 45320, Pakistan.
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10
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Zhao Y, Yang H, Sun J, Zhang Y, Xia S. Activation of Peroxymonosulfate Using Secondary Pyrolysis Oil-Based Drilling Cuttings Ash for Pollutant Removal. ACS OMEGA 2021; 6:16446-16454. [PMID: 34235316 PMCID: PMC8246478 DOI: 10.1021/acsomega.1c01597] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/25/2021] [Accepted: 06/07/2021] [Indexed: 06/13/2023]
Abstract
In this study, the utilization of secondary pyrolysis oil-based drilling cuttings ash (OBDCA-sp) to activate peroxymonosulfate (PMS) for pollutant removal was investigated. The chemical and physical properties of OBDCA-sp were explicitly analyzed via multiple characterization. The activation efficiency of OBDCA-sp for PMS was tested using humic acid (HA) as the target pollutant. 92% of HA and 52% of total organic carbon in solution could be removed using OBDCA-sp-activated PMS under optimal conditions: OBDCA-sp dosage at 4 g/L, PMS concentration at 4 mmol/L, HA concentration at 10 mg/L, and pH value at 7. After four cycles, 84% removal rate of HA could still be achieved using OBDCA-sp to activate PMS. The main catalysis elements for PMS activation in OBDCA were postulated to be Fe(III), Co(III), and Mn(III), based on X-ray photoelectron spectroscopy and X-ray diffraction results. The results of the quenching experiment indicated that SO4 •-, •OH, and 1O2 were the main reactive oxygen species (ROS) and that 1O2 was the dominant ROS in the HA removal process. Radical trapping experiments indicated the presence of SO4 •-, •OH, and 1O2 in the reaction system. This study presented a novel utilization path of OBDCA in the field of environmental remediation.
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Affiliation(s)
- Yuqing Zhao
- School
of Resources and Environmental Engineering, Wuhan University of Technology, Wuhan 430070, China
- College
of Ecology and Environment, Hubei Vocational
College of Ecological Engineering, Wuhan 430200, P. R. China
- State
Key Laboratory of Freshwater Ecology and Biotechnology, Institute
of Hydrobiology, Chinese Academy of Sciences, Wuhan 430072, P. R. China
| | - Hang Yang
- School
of Resources and Environmental Engineering, Wuhan University of Technology, Wuhan 430070, China
| | - Jianfa Sun
- China
Petroleum & Chemical Corporation Jianghan Oilfield, Branch No. 1 Gas Production Plant, Chongqing 400000, China
| | - Yi Zhang
- State
Key Laboratory of Freshwater Ecology and Biotechnology, Institute
of Hydrobiology, Chinese Academy of Sciences, Wuhan 430072, P. R. China
| | - Shibin Xia
- School
of Resources and Environmental Engineering, Wuhan University of Technology, Wuhan 430070, China
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11
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Enhanced permeability and antifouling performance of polyether sulfone (PES) membrane via elevating magnetic Ni@MXene nanoparticles to upper layer in phase inversion process. J Memb Sci 2021. [DOI: 10.1016/j.memsci.2021.119080] [Citation(s) in RCA: 72] [Impact Index Per Article: 24.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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12
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Ganjali MR, Al‐Naqshabandi MA, Larijani B, Badiei A, Vatanpour V, Rajabi HR, Rezania H, Paziresh S, Mahmodi G, Kim SJ, Saeb MR. Improvement of dye and protein filtration efficiency using modified PES membrane with 2-mercaptoethanol capped zinc sulfide quantum dots. Chem Eng Res Des 2021. [DOI: 10.1016/j.cherd.2020.12.026] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
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13
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Fabrication of novel polyethersulfone (PES) hybrid ultrafiltration membranes with superior permeability and antifouling properties using environmentally friendly sulfonated functionalized polydopamine nanofillers. Sep Purif Technol 2021. [DOI: 10.1016/j.seppur.2021.118311] [Citation(s) in RCA: 31] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
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14
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Zhang S, Yuan H, Wang C, Liu X, Lu J. Antifouling performance enhancement of polyethersulfone ultrafiltration membrane through increasing charge‐loading capacity over Prussian blue nanoparticles. J Appl Polym Sci 2020. [DOI: 10.1002/app.49410] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Shuai Zhang
- School of Chemistry and Chemical EngineeringShanghai University of Engineering Science Shanghai China
| | - Haikuan Yuan
- School of Chemistry and Chemical EngineeringShanghai University of Engineering Science Shanghai China
| | - Chengcong Wang
- School of Chemistry and Chemical EngineeringShanghai University of Engineering Science Shanghai China
| | - Xiaodi Liu
- School of Chemistry and Chemical EngineeringShanghai University of Engineering Science Shanghai China
| | - Jie Lu
- School of Chemistry and Chemical EngineeringShanghai University of Engineering Science Shanghai China
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15
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Srivastav AL, Patel N, Chaudhary VK. Disinfection by-products in drinking water: Occurrence, toxicity and abatement. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2020; 267:115474. [PMID: 32889516 DOI: 10.1016/j.envpol.2020.115474] [Citation(s) in RCA: 92] [Impact Index Per Article: 23.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/18/2020] [Revised: 08/13/2020] [Accepted: 08/19/2020] [Indexed: 05/05/2023]
Abstract
Disinfection means the killing of pathogenic organisms (e.g. bacteria and its spores, viruses, protozoa and their cysts, worms, and larvae) present in water to make it potable for other domestic works. The substances used in the disinfection of water are known as disinfectants. At municipal level, chlorine (Cl2), chloramines (NH2Cl, NHCl2), chlorine dioxide (ClO2), ozone (O3) and ultraviolet (UV) radiations, are the most commonly used disinfectants. Chlorination, because of its removal efficiency and cost effectiveness, has been widely used as method of disinfection of water. But, disinfection process may add several kinds of disinfection by-products (DBPs) (∼600-700 in numbers) in the treated water such as Trihalomethanes (THM), Haloacetic acids (HAA) etc. which are detrimental to the human beings in terms of cytotoxicity, mutagenicity, teratogenicity and carcinogenicity. In water, THMs and HAAs were observed in the range from 0.138 to 458 μg/L and 0.16-136 μg/L, respectively. Thus, several regulations have been specified by world authorities like WHO, USEPA and Bureau of Indian Standard to protect human health. Some techniques have also been developed to remove the DBPs as well as their precursors from the water. The popular techniques of DBPs removals are adsorption, advance oxidation process, coagulation, membrane based filtration, combined approaches etc. The efficiency of adsorption technique was found up to 90% for DBP removal from the water.
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Affiliation(s)
- Arun Lal Srivastav
- Chitkara University School of Engineering and Technology, Chitkara University, Himachal Pradesh, India.
| | - Naveen Patel
- Department of Civil Engineering, Institute of Engineering & Technology, Dr. Ram Manohar Lohia Awadh University, Ayodhya, Uttar Pradesh, India
| | - Vinod Kumar Chaudhary
- Department of Environmental Sciences, Dr. Ram Manohar Lohia Awadh University, Ayodhya, Uttar Pradesh, India
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16
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A novel strategy based on magnetic field assisted preparation of magnetic and photocatalytic membranes with improved performance. J Memb Sci 2020. [DOI: 10.1016/j.memsci.2020.118378] [Citation(s) in RCA: 68] [Impact Index Per Article: 17.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
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17
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Obtainment and Characterization of Hydrophilic Polysulfone Membranes by N-Vinylimidazole Grafting Induced by Gamma Irradiation. Polymers (Basel) 2020; 12:polym12061284. [PMID: 32512692 PMCID: PMC7362247 DOI: 10.3390/polym12061284] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2020] [Revised: 05/30/2020] [Accepted: 05/31/2020] [Indexed: 11/17/2022] Open
Abstract
Polysulfone (PSU) film and N-vinylimidazole (VIM) were used to obtain grafted membranes with high hydrophilic capacity. The grafting process was performed by gamma irradiation under two experiments: (1) different irradiation doses (100-400 kGy) and VIM 50% solution; (2) different concentration of grafted VIM (30-70%) and 300 kGy of irradiation dose. Characteristics of the grafted membranes were determined by Fourier transform infrared spectroscopy (FTIR), scanning electron microscopy (SEM), contact angle, swelling degree, desalination test, thermogravimetric analysis (TGA) and differential scanning calorimetry (DSC). Both experiments indicated that the absorbed dose 300 kGy and the VIM concentration, at 50% v/v, were effective to obtain PSU grafted membranes with 14.3% of grafting yield. Nevertheless, experimental conditions, 400 kGy, VIM 50% and 300 kGy, VIM 60-70% promoted possible membrane degradation and VIM homopolymerization on the membrane surface, which was observed by SEM images; meanwhile, 100-200 kGy and VIM 30-50% produced minimal grafting (2 ± 0.5%). Hydrophilic surface of the grafted PSU membranes by 300 kGy and VIM 50% v/v were corroborated by the water contact angle, swelling degree and desalination test, showing a decrease from 90.7° ± 0.3 (PSU film) to 64.3° ± 0.5; an increment of swelling degree of 25 ± 1%, and a rejection-permeation capacity of 75 ± 2%. In addition, the thermal behavior of grafted PSU membranes registered an increment in the degradation of 20%, due to the presence of VIM. However, the normal temperature of the membrane operation did not affect this result; meanwhile, the glass transition temperature (Tg) of the grafted PSU membrane was found at 185.4 ± 0.5 °C, which indicated an increment of 15 ± 1%.
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18
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An Overview of the Water Remediation Potential of Nanomaterials and Their Ecotoxicological Impacts. WATER 2020. [DOI: 10.3390/w12041150] [Citation(s) in RCA: 28] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Nanomaterials, i.e., those materials which have at least one dimension in the 1–100 nm size range, have produced a new generation of technologies for water purification. This includes nanosized adsorbents, nanomembranes, photocatalysts, etc. On the other hand, their uncontrolled release can potentially endanger biota in various environmental domains such as soil and water systems. In this review, we point out the opportunities created by the use of nanomaterials for water remediation and also the adverse effects of such small potential pollutants on the environment. While there is still a large need to further identify the potential hazards of nanomaterials through extensive lab or even field studies, an overview on the current knowledge about the pros and cons of such systems should be helpful for their better implementation.
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Yu W, Liu Y, Shen L, Xu Y, Li R, Sun T, Lin H. Magnetic field assisted preparation of PES-Ni@MWCNTs membrane with enhanced permeability and antifouling performance. CHEMOSPHERE 2020; 243:125446. [PMID: 31995891 DOI: 10.1016/j.chemosphere.2019.125446] [Citation(s) in RCA: 25] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/19/2019] [Revised: 11/17/2019] [Accepted: 11/21/2019] [Indexed: 06/10/2023]
Abstract
Multiple wall carbon nanotubes (MWCNTs), as an excellent material, have been used in various applications including preparation of polymer-MWCNTs composite membranes. However, few reports have combined the magnetic Ni@MWCNTs with polyether sulfone (PES) membrane to improve its antifouling performance to humic acid (HA), sodium alginate (SA), bovine serum albumin (BSA) and yeast (YE) solutions. In this study, the Ni@MWCNTs was generated by immersing MWCNTs into Ni2+ solution where in-situ reduction reaction was launched by the adsorbed Ag+ on MWCNTs. Since the loaded Ni endowed magnetism to MWCNTs, the Ni@MWCNTs can be easily attracted onto the membrane surface by an external magnetic field during the phase inversion process. The morphology measurements confirmed that the Ni@MWCNTs headed out of the PES-Ni@MWCNTs membrane surface. Because the MWCNTs played a role of free channels for water molecules, the composite membrane water flux reached to threefold flux of the pristine membrane. Moreover, the PES-Ni@MWCNTs membranes displayed the obviously enhanced antifouling ability during all the three alternative filtration cycles of water and BSA, SA, YE and HA solutions. In addition, the optimal PES-Ni@MWCNTs membrane demonstrated a flux recovery rate (FRR) of 67.89%, 85.53%, 60.28 and 90.12% for BSA, SA, YE and HA, respectively, which were not only much higher than that of the pristine membrane, but also exhibited significant improvements comparing with the previous studies. Further results of extended Derjaguin-Landau-Verwey-Overbeek (XDLVO) theory indicated that the modified membrane possessed advantageous interaction energies with contaminant molecules over the pristine membrane.
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Affiliation(s)
- Weiming Yu
- College of Geography and Environmental Sciences, Zhejiang Normal University, Jinhua, 321004, PR China.
| | - Ying Liu
- College of Geography and Environmental Sciences, Zhejiang Normal University, Jinhua, 321004, PR China.
| | - Liguo Shen
- College of Geography and Environmental Sciences, Zhejiang Normal University, Jinhua, 321004, PR China.
| | - Yanchao Xu
- College of Geography and Environmental Sciences, Zhejiang Normal University, Jinhua, 321004, PR China.
| | - Renjie Li
- College of Geography and Environmental Sciences, Zhejiang Normal University, Jinhua, 321004, PR China.
| | - Tianyu Sun
- College of Geography and Environmental Sciences, Zhejiang Normal University, Jinhua, 321004, PR China.
| | - Hongjun Lin
- College of Geography and Environmental Sciences, Zhejiang Normal University, Jinhua, 321004, PR China.
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