Advanced method for clean water recovery from batik wastewater via sequential adsorption, ozonation and photocatalytic membrane PVDF-TiO2/rGO processes

光催化 吸附 废水 化学工程 纳米复合材料 膨润土 结垢 水处理 膜污染 材料科学 渗透 过滤(数学) 污水处理 饮用水净化 化学 环境工程 纳米技术 有机化学 环境科学 催化作用 工程类 统计 生物化学 数学
作者
Tutuk Djoko Kusworo,Irvan Irvan,Andri Cahyo Kumoro,Y Nabilah,Aufa Rasendriya,Dani Puji Utomo,Hasrinah Hasbullah
出处
期刊:Journal of environmental chemical engineering [Elsevier]
卷期号:10 (6): 108708-108708 被引量:18
标识
DOI:10.1016/j.jece.2022.108708
摘要

This study aimed to investigate the synthesis of TiO2/rGO nanocomposite particles and incorporate them into PVDF membrane for Batik wastewater treatment. Bentonite adsorption and ozonation were combined to mitigate fouling development during the filtration process. The results proved that the TiO2/rGO nanocomposite successfully narrowed the band gap energy ∼2.9 eV by which enhancing its photo sensitivity within the visible light region. Furthermore, the chemical compatibility of TiO2 with PVDF can be improved with the presence of rGO. PVA coating on PVDF-TiO2/rGO membrane has enhanced hydrophilicity and provided the best performance by giving permeate flux ∼19.3 L.m−2.h−1 and dyes rejection up to ∼90%, respectively. Obviously, pre-treatment using bentonite and followed by ozonation significantly enhanced the permeate flux up to 21 L.m−2.h−1 and overall rejection up to ∼95%. As expected, the addition of TiO2/rGO nanocomposites increased membrane's photocatalytic activity by 30–100%. More importantly, wastewater treatment by combining bentonite adsorption, ozonation, and photocatalytic membrane filtration has successfully improved permeate flux and performance stability, reduced fouling growth, and produced clean water. Therefore, the results of this study offers a new promising advanced wastewater treatment for Batik wastewater treatment to produce clean water.

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