Zeolite-PAN/PVDF composite nanofiber membranes for highly efficient and selective removal of cationic dyes from wastewater

Q1 Environmental Science

Case Studies in Chemical and Environmental Engineering Pub Date : 2024-06-17 DOI:10.1016/j.cscee.2024.100806

Muhamad F. Arif , Sephia Amanda Muhtar , Cindy Siburian , Kurniawan Deny Pratama Marpaung , Nursidik Yulianto , Fatwa F. Abdi , Tarmizi Taher , Hutomo Suryo Wasisto , Aditya Rianjanu

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Abstract

This study presents a novel composite nanofiber membrane combining polyacrylonitrile/polyvinylidene fluoride (PAN/PVDF) electrospun nanofibers with locally sourced zeolite from Sumatera, Indonesia, for pollutant dye filtration. The Ze-PAN/PVDF composite nanofiber membrane has 100% methylene blue dye rejection even after five filtration cycles with a permeation flux of 185 L m⁻² h⁻¹ bar⁻¹. The membrane is highly selective, with 100% dye filtration efficiency for cationic dyes (i.e., methylene blue and crystal violet) vs. 78% and 1% for anionic dyes (i.e., Congo red and methyl orange, respectively). For the cationic dyes, the dye filtration mechanism is mainly governed by electrostatic attraction, while the size exclusion mechanism becomes more dominant for the anionic dyes. Overall, these results demonstrate the potential use of Ze-PAN/PVDF composite nanofiber membrane in wastewater treatment applications.

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用于高效和选择性去除废水中阳离子染料的沸石-PAN/PVDF 复合纳米纤维膜

本研究提出了一种新型复合纳米纤维膜，它将聚丙烯腈/聚偏二氟乙烯（PAN/PVDF）电纺纳米纤维与印度尼西亚苏门答腊当地的沸石结合在一起，用于污染物染料过滤。沸石-PAN/PVDF 复合纳米纤维膜在渗透通量为 185 L m-2 h-1 bar-1 的情况下，经过五个过滤周期后仍能 100% 阻隔亚甲基蓝染料。膜的选择性很高，对阳离子染料（即亚甲基蓝和结晶紫）的过滤效率为 100%，而对阴离子染料（即刚果红和甲基橙）的过滤效率分别为 78% 和 1%。对于阳离子染料来说，染料过滤机制主要受静电吸引作用的支配，而对于阴离子染料来说，尺寸排除机制变得更为重要。总之，这些结果证明了 Ze-PAN/PVDF 复合纳米纤维膜在废水处理应用中的潜在用途。

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

Case Studies in Chemical and Environmental Engineering Engineering-Engineering (miscellaneous)

CiteScore

9.20

自引率

0.00%

发文量

103

审稿时长

40 days