Arsenic removal from contaminated water using adsorptive electrospun nanofibrous membrane of polyacrylonitrile/organoclay

IF 3.2 4区工程技术 Q2 ENGINEERING, CHEMICAL

Polymer Engineering and Science Pub Date : 2024-08-28 DOI:10.1002/pen.26885

Elham Shokri, Elham Naghashzargar, Kosar Behamaram

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引用次数: 0

Abstract

Adsorptive nanofiber electrospun membranes (ANEMs) show promise for heavy metal removal, particularly in dilute solutions. Nanofibrous polyacrylonitrile (PAN) membranes incorporating Cloisite 20A (C20) organoclay were fabricated via electrospinning for As(V) removal. The impact of C20 on structural properties and As(V) removal efficiency of the nanofiber membranes was investigated. The results indicated that the PAN‐C20 membranes morphology was uniform, with fiber diameters mostly falling within the 100–300 nm range. Incorporation of C20, especially in an exfoliated structure, led to increased hydrophilicity, mechanical strength, and roughness of the membranes. Batch adsorption results revealed that the adding C20 up to 1.5 wt.% significantly enhanced adsorption capacity due to the higher concentration and proper C20 dispersion. Dynamic filtration showed that the PAN‐C20(1.0) membrane achieved over 90% As(V) removal efficiency for 960 min and demonstrated excellent regeneration ability.Highlights

Cloisite 20A organoclay was incorporated into PAN by electrospinning to prepare adsorptive membrane.

Adsorptive membranes were used for As(V) removal from water.

Type of Cloisite 20A dispersion in PAN in dynamic filtration was more important than in static adsorption

PAN‐C20‐1.0 with exfoliated structure showed higher removal efficiency than PAN‐C20‐1.0 with intercalated structure.

PAN‐C20‐1.0 membrane was usable for multiple adsorption–desorption cycles.

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利用聚丙烯腈/有机土的吸附性电纺纳米纤维膜去除受污染水体中的砷

吸附性纳米纤维电纺丝膜（ANEM）有望去除重金属，尤其是稀溶液中的重金属。通过电纺丝技术制造了含有 Cloisite 20A （C20）有机土的纳米聚丙烯腈（PAN）膜，用于去除 As（V）。研究了 C20 对纳米纤维膜的结构特性和 As(V) 去除效率的影响。结果表明，PAN-C20 膜形态均匀，纤维直径大多在 100-300 nm 范围内。C20 的加入，尤其是在剥离结构中的加入，增加了膜的亲水性、机械强度和粗糙度。批量吸附结果表明，由于 C20 的浓度较高且分散得当，添加量达到 1.5 wt.% 的 C20 能显著提高吸附能力。动态过滤结果表明，PAN-C20(1.0) 膜在 960 分钟内对 As(V) 的去除率超过 90%，并表现出优异的再生能力。吸附膜用于去除水中的 As(V)。在动态过滤中，Cloisite 20A 在 PAN 中的分散类型比在静态吸附中更重要。具有剥离结构的 PAN-C20-1.0 比具有插层结构的 PAN-C20-1.0 具有更高的去除效率。PAN-C20-1.0 膜可用于多次吸附-解吸循环。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Polymer Engineering and Science 工程技术-高分子科学

CiteScore

5.40

自引率

18.80%

发文量

329

审稿时长

3.7 months

期刊介绍： For more than 30 years, Polymer Engineering & Science has been one of the most highly regarded journals in the field, serving as a forum for authors of treatises on the cutting edge of polymer science and technology. The importance of PE&S is underscored by the frequent rate at which its articles are cited, especially by other publications - literally thousand of times a year. Engineers, researchers, technicians, and academicians worldwide are looking to PE&S for the valuable information they need. There are special issues compiled by distinguished guest editors. These contain proceedings of symposia on such diverse topics as polyblends, mechanics of plastics and polymer welding.