Polyamide intercalated nanofiltration membrane modified with biofunctionalized core shell composite for efficient removal of Arsenic and Selenium from wastewater

Zeeshan, Muhammad Hamad; Khan, Rafi Ullah; Shafiq, Muhammad; Sabir, Aneela

doi:10.1016/j.jwpe.2020.101175

Cited by 44 publications

(11 citation statements)

References 62 publications

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“…Polyamide intercalated TFC-NF membrane modified with biofunctionalized core shell composite (PA-CSBF) membranes showed improved pure water permeability and rejections for As III and Se ions due to their enhanced hydrophilicity. An optimum PA-CSBF membrane exhibits 99 and 98% rejection of As III and Se ions, at permeate flux of 444 L/m 2 h, ( Table 4 ), respectively [ 169 ]. Fully aromatic polyester TFC-NF membranes were successfully prepared on polysulfone support through interfacial polymerization (IP) of trimesoyl chloride (TMC) with bi functional resorcinol (Res), tri-functional phloroglucinol (Phg) and their blends for effective arsenic removal.…”

Section: Nanofiltration For Arsenic Removalmentioning

confidence: 99%

Nanofiltration for Arsenic Removal: Challenges, Recent Developments, and Perspectives

2020

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Arsenic (As) removal is of major significance because inorganic arsenic is highly toxic to all life forms, is a confirmed carcinogen, and is of significant environmental concern. As contamination in drinking water alone threatens more than 150 million people all over the world. Therefore, several conventional methods such as oxidation, coagulation, adsorption, etc., have been implemented for As removal, but due to their cost-maintenance limitations; there is a drive for advanced, low cost nanofiltration membrane-based technology. Thus, in order to address the increasing demand of fresh and drinking water, this review focuses on advanced nanofiltration (NF) strategy for As removal to safeguard water security. The review concentrates on different types of NF membranes, membrane fabrication processes, and their mechanism and efficiency of performance for removing As from contaminated water. The article provides an overview of the current status of polymer-, polymer composite-, and polymer nanocomposite-based NF membranes, to assess the status of nanomaterial-facilitated NF membranes and to incite progress in this area. Finally, future perspectives and future trends are highlighted.

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Section: Nanofiltration For Arsenic Removalmentioning

confidence: 99%

Nanofiltration for Arsenic Removal: Challenges, Recent Developments, and Perspectives

2020

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“…The reason for the mentioned outcome is the increment of pore size and porosity % of the PSf membrane, which are the key factors for arsenite removal, as it follows the steric exclusion mechanism [ 15 ]. There is no report yet on the arsenite removal by electrospun membranes, but recently, a 99% arsenite removal rate has been achieved by the polyamide intercalated nanofiltration membrane [ 15 , 83 ]. In this case, pore size and porosity % play the main roles, as the pH of arsenite solution was between 6.4 to 7.4 and arsenite stays in water as uncharged H 3 AsO 3 in this pH range [ 84 ].…”

Section: Resultsmentioning

confidence: 99%

Electrospun Composite Nanofiltration Membranes for Arsenic Removal

et al. 2022

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In recent years, significant attention has been paid towards the study and application of mixed matrix nanofibrous membranes for water treatment. The focus of this study is to develop and characterize functional polysulfone (PSf)-based composite nanofiltration (NF) membranes comprising two different oxides, such as graphene oxide (GO) and zinc oxide (ZnO) for arsenic removal from water. PSf/GO- and PSf/ZnO-mixed matrix NF membranes were fabricated using the electrospinning technique, and subsequently examined for their physicochemical properties and evaluated for their performance for arsenite–As(III) and arsenate–As(V) rejection. The effect of GO and ZnO on the morphology, hierarchical structure, and hydrophilicity of fabricated membranes was studied using a scanning electron microscope (SEM), small and ultra-small angle neutron scattering (USANS and SANS), contact angle, zeta potential, and BET (Brunauer, Emmett and Teller) surface area analysis. Fourier transform infrared spectroscopy (FTIR), X-ray diffraction (XRD), and X-ray photoelectron spectroscopy (XPS) were used to study the elemental compositions and polymer-oxide interaction in the membranes. The incorporation of GO and ZnO in PSf matrix reduced the fiber diameter but increased the porosity, hydrophilicity, and surface negative charge of the membranes. Among five membrane systems, PSf with 1% ZnO has the highest water permeability of 13, 13 and 11 L h−1 m−2 bar−1 for pure water, As(III), and As(V)-contaminated water, respectively. The composite NF membranes of PSf and ZnO exhibited enhanced (more than twice) arsenite removal (at 5 bar pressure) of 71% as compared to pristine PSf membranes, at 43%, whereas both membranes showed only a 27% removal for arsenate.

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“…Se has become an emerging health threat because of its presence in drinking water. The management of Se polluted ground water for drinkable water use is a costly endeavor (Zeeshan et al, 2020 ). Membrane technology is one of the most efficient approach for large-scale Se separation, which has the rewards of high efficacy, convenient implementation, and low power consumption (Qiu et al, 2020 ).…”

Section: Se Remediation Technologiesmentioning

confidence: 99%

A critical analysis of sources, pollution, and remediation of selenium, an emerging contaminant

Ullah

Rashid

et al. 2022

Environ Geochem Health

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Selenium (Se) is an essential metalloid and is categorized as emerging anthropogenic contaminant released to the environment. The rise of Se release into the environment has raised concern about its bioaccumulation, toxicity, and potential to cause serious damages to aquatic and terrestrial ecosystem. Therefore, it is extremely important to monitor Se level in environment on a regular basis. Understanding Se release, anthropogenic sources, and environmental behavior is critical for developing an effective Se containment strategy. The ongoing efforts of Se remediation have mostly emphasized monitoring and remediation as an independent topics of research. However, our paper has integrated both by explaining the attributes of monitoring on effective scale followed by a candid review of widespread technological options available with specific focus on Se removal from environmental media. Another novel approach demonstrated in the article is the presentation of an overwhelming evidence of limitations that various researchers are confronted with to overcome achieving effective remediation. Furthermore, we followed a holistic approach to discuss ways to remediate Se for cleaner environment especially related to introducing weak magnetic field for ZVI reactivity enhancement. We linked this phenomenal process to electrokinetics and presented convincing facts in support of Se remediation, which has led to emerge ‘membrane technology’, as another viable option for remediation. Hence, an interesting, innovative and future oriented review is presented, which will undoubtedly seek attention from global researchers.

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Polyamide intercalated nanofiltration membrane modified with biofunctionalized core shell composite for efficient removal of Arsenic and Selenium from wastewater

Cited by 44 publications

References 62 publications

Nanofiltration for Arsenic Removal: Challenges, Recent Developments, and Perspectives

Nanofiltration for Arsenic Removal: Challenges, Recent Developments, and Perspectives

Electrospun Composite Nanofiltration Membranes for Arsenic Removal

A critical analysis of sources, pollution, and remediation of selenium, an emerging contaminant

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