Application of modified PVC membranes with GO-ZnO nanoparticles in MBR: Sludge characteristics, fouling control and removal performance

IF 5.5 3区工程技术 Q1 ENGINEERING, CHEMICAL Journal of the Taiwan Institute of Chemical Engineers Pub Date : 2024-06-04 DOI:10.1016/j.jtice.2024.105586

Sahar Onagh , Hossein Hazrati , Yoones Jafarzadeh

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Abstract

Background

Membrane fouling is still one crucial impediment in the application of membrane bioreactors (MBR).

Methods

Antifouling properties of GO and GO-ZnO embedded PVC membranes in MBR were investigated. ZnO nanoparticles were decorated onto GO nanosheets and then membranes were made by NIPS method.

Significant findings

The results revealed that the contact angle decreased from 80° for pure PVC to 67° for 0.1 wt% GO-ZnO embedded membrane. Pure water flux increased from 33 L/m²h for neat membrane to 128 L/m²h for 0.075 wt% PVC/GO-ZnO membrane. The performance of membranes was evaluated during 35 days MBR filtration system using several analyses including COD, turbidity, SMP, EPS, PSD, and EEM. Results indicated that the presence of GO-ZnO nanoparticles in the membranes has a positive effect on COD and turbidity removal due to the oxygen-containing groups attracting SMP through intermolecular force interaction. In addition, the inclusion of nanoparticles in the membranes leads to a reduction in EPS concentration. Research on PVC membranes with graphene oxide and zinc oxide nanoparticles in membrane bioreactor processes is crucial for advancing water treatment technology. These nanomaterials promise enhanced membrane performance, longevity, and efficiency in treating wastewater, leading to more sustainable and effective water treatment solutions.

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在 MBR 中应用含有 GO-ZnO 纳米颗粒的改性 PVC 膜：污泥特性、污垢控制和去除性能

背景膜污垢仍然是膜生物反应器（MBR）应用中的一个关键障碍。方法研究了 GO 和 GO-ZnO 嵌入 PVC 膜在 MBR 中的防污性能。结果表明，接触角从纯 PVC 的 80° 下降到 0.1 wt% GO-ZnO 嵌入膜的 67°。纯水通量从纯膜的 33 升/平方米小时增加到 0.075 wt% PVC/GO-ZnO 膜的 128 升/平方米小时。在 35 天的 MBR 过滤系统中，使用了几种分析方法对膜的性能进行了评估，包括 COD、浊度、SMP、EPS、PSD 和 EEM。结果表明，膜中含有 GO-ZnO 纳米粒子对去除 COD 和浊度有积极作用，这是因为含氧基团通过分子间力的相互作用吸引了 SMP。此外，在膜中加入纳米颗粒还能降低 EPS 浓度。在膜生物反应器过程中研究含有氧化石墨烯和氧化锌纳米颗粒的聚氯乙烯膜，对于推动水处理技术的发展至关重要。这些纳米材料有望提高膜的性能、寿命和处理废水的效率，从而带来更可持续和更有效的水处理解决方案。

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来源期刊

Journal of the Taiwan Institute of Chemical Engineers 工程技术-工程：化工

CiteScore

9.10

自引率

14.00%

发文量

362

审稿时长

35 days

期刊介绍： Journal of the Taiwan Institute of Chemical Engineers (formerly known as Journal of the Chinese Institute of Chemical Engineers) publishes original works, from fundamental principles to practical applications, in the broad field of chemical engineering with special focus on three aspects: Chemical and Biomolecular Science and Technology, Energy and Environmental Science and Technology, and Materials Science and Technology. Authors should choose for their manuscript an appropriate aspect section and a few related classifications when submitting to the journal online.