A novel reduced graphene oxide/polypyrrole conductive ceramic membrane enhanced electric field membrane bioreactor: Mariculture wastewater treatment performance and membrane fouling mitigation

Rui Wang; Hong You; Zhipeng Li; Binghan Xie; Shaojie Qi; Jing Zhu; Qiqing Qin; Han Wang; Jinxu Sun; Yi Ding; Yuhong Jia; Feng Liu

doi:10.1016/j.biortech.2023.128917

A novel reduced graphene oxide/polypyrrole conductive ceramic membrane enhanced electric field membrane bioreactor: Mariculture wastewater treatment performance and membrane fouling mitigation

Bioresour Technol. 2023 May:376:128917. doi: 10.1016/j.biortech.2023.128917. Epub 2023 Mar 18.

Authors

Rui Wang¹, Hong You², Zhipeng Li³, Binghan Xie², Shaojie Qi¹, Jing Zhu¹, Qiqing Qin⁴, Han Wang¹, Jinxu Sun⁵, Yi Ding⁶, Yuhong Jia⁴, Feng Liu⁴

Affiliations

¹ State Key Laboratory of Urban Water Resource and Environment, School of Environment, Harbin Institute of Technology, Harbin 150090, China.
² State Key Laboratory of Urban Water Resource and Environment, School of Environment, Harbin Institute of Technology, Harbin 150090, China; School of Marine Science and Technology, Harbin Institute of Technology at Weihai, Weihai 264209, China.
³ State Key Laboratory of Urban Water Resource and Environment, School of Environment, Harbin Institute of Technology, Harbin 150090, China; School of Marine Science and Technology, Harbin Institute of Technology at Weihai, Weihai 264209, China. Electronic address: lizhipengcn@hit.edu.cn.
⁴ School of Marine Science and Technology, Harbin Institute of Technology at Weihai, Weihai 264209, China.
⁵ School of Civil and Environmental Engineering, Harbin Institute of Technology at Shenzhen, Shenzhen 518055, China.
⁶ Marine College, Shandong University, Weihai 264209, China.

PMID: 36934909
DOI: 10.1016/j.biortech.2023.128917

Abstract

A novel electric field membrane bioreactor (EMBR) for mariculture wastewater treatment utilizing reduced graphene oxide/polypyrrole ceramic membrane (rGO/PPy CM) was constructed and compared with MBRs using CM support and rGO/PPy CM. EMBR (rGO/PPy) obtained the highest pollutant removal rates (84.99% for TOC, 85.98% for NH₄⁺-N), the lowest average membrane fouling rate (2.42 kPa/d) and pollutant adhesion performance by characterization. Meanwhile, the specific fluxes of characteristic foulants in EMBR were enhanced, and the total resistances were reduced by 8.12% to 62.46%. The underlying mechanisms included reduced attraction energy and improved electrostatic repulsion between contaminants in EMBR and membrane by the extended Derjaguin-Landau-Verwey-Overbeek (XDLVO) theory, DLVO model and force analysis. Therefore, this study complemented the understanding of antifouling effect and mechanism in EMBR by interaction energy and force analysis of characteristic pollutants. These findings also provided new insights into the application of EMBR for mariculture wastewater treatment.

Keywords: Electric field membrane bioreactor; Mariculture wastewater; Membrane fouling; XDLVO theory; rGO/PPy conductive ceramic membrane.

MeSH terms

Bioreactors
Membranes, Artificial
Polymers*
Pyrroles
Water Purification*

Substances

graphene oxide
polypyrrole
Polymers
Pyrroles
Membranes, Artificial