Evaluation of aquaporin based biomimetic forward osmosis membrane in terms of rejection performance for contaminants in greywater and its membrane fouling properties

被引：5
作者：
Chen Y. [1 ]
Ren X. [1 ]
Huang M. [3 ]
Li Y. [1 ,2 ]
机构：
[1] State Key Laboratory of Pollution Control and Resource Reuse, College of Environmental Science and Engineering, Tongji University, Shanghai
[2] Shanghai Institute of Pollution Control and Ecological Security, Shanghai
[3] Textile Pollution Controlling Engineering Centre of Ministry of Environmental Protection, College of Environmental Science and Engineering, Donghua University, Shanghai
来源：
Chemosphere | 2023年 / 333卷
关键词：
Aquaporin membrane; Forward osmosis; Greywater; Membrane fouling; Microorganisms;
D O I：
10.1016/j.chemosphere.2023.138983
中图分类号：
学科分类号：
摘要：
Forward osmosis (FO) technology is regarded as an alternative to wastewater treatment due to its high permeate flux, excellent solute selectivity and low fouling tendency. In this study, two novel aquaporin based biomimetic membranes (ABMs) were used for comparison in short-term experiments to investigate the impact of membrane surface properties on greywater treatment. The impact of feed solution (FS) temperature on the filtration performance and membrane fouling behavior of ABM was further analyzed in the sequential batch experiments. Results indicated that the membranes with rough surface morphology and low zeta potential (absolute value) facilitated the adsorption of linear alklybezene sulfonates (LAS), thus improving the water flux and the rejection of Ca2+ and Mg2+. The increase in FS temperature enhanced the diffusion of organic matter and the water flux. In addition, sequential batch experiments showed that the membrane fouling layer was mainly in the form of organic and inorganic composite fouling, which was mitigated at FS temperature of 40 °C. Microbial community analysis revealed that the increase in FS temperature affected the diversity of microbial communities. More heterotrophic nitrifying bacteria were enriched in the fouling layer at FS 40 °C than at FS 20 °C. This study provides a novel strategy for employing ABM FO in greywater treatment and reuse. © 2023 Elsevier Ltd
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