E2.05 Ma 2018 ReNUWIt Annual Meeting Poster

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Abstract/Contents

Abstract: Membrane processes such as reverse osmosis, nanofiltration, and electrodialysis (ED) gain increasing importance to produce high- quality water from seawater, brackish water, and wastewater. ED is favored for its higher energy efficiency and water recovery as compared to pressure-driven membrane technologies. Like other membrane processes, one of the barriers to ED is biofouling of ion- exchange membranes, resulting in reduced membrane performance, shortened membrane lifetime, and subsequently increased O&M cost. Membrane biofouling is a dynamic process initiated from microbial colonization and growth on membrane surface. Prevention or reduction of undesired interactions between bacteria and membrane surface is an imperative method to control biofouling. Surface modification of membranes increases membrane surface hydrophilicity, modifies membrane surface charge, and incorporates biocidal organic polymer or inorganic particles on the membrane surface. This study aims to improve anti-biofouling performance of ion-exchange membranes by modifying membrane surface with polymers such as polyethyleneimine and nano-particles such as titanium dioxide and graphene oxide.

Type of resource	other
Date created	May 2018

Subject	Re-inventing the Nation’s Urban Water Infrastructure
Subject	ReNUWIt
Subject	E2.05
Subject	Efficient Engineered Systems
Subject	Energy and resource recovery
Subject	New Mexico
Subject	beneficial use
Subject	brackish water
Subject	cation exchange
Subject	concentrate treatment
Subject	desalination
Subject	electrodialysis
Subject	high recovery
Subject	ion exchange membranes
Subject	ion selectivity
Subject	ion transport
Subject	membrane
Subject	modification
Subject	removal
Subject	salt
Subject	transport
Subject	treatment
Subject	wastewater

Related Publication	Xu, X. S., He, Q., Ma, G. Y., Wang, H. Y., Nirmalakhandan, N., & Xu, P. (2018). Selective separation of mono- and di-valent cations in electrodialysis during brackish water desalination: Bench and pilot-scale studies. Desalination, 428, 146-160. http://doi.org/10.1016/j.desal.2017.11.015
Related Publication	Xu, X. S., Lin, L., Ma, G. Y., Wang, H. Y., Jiang, W. B., He, Q., . . . Xu, P. (2018). Study of polyethyleneimine coating on membrane permselectivity and desalination performance during pilot-scale electrodialysis of reverse osmosis concentrate. Separation and Purification Technology, 207, 396-405. http://doi.org/10.1016/j.seppur.2018.06.070
Location	https://purl.stanford.edu/xs443ry5146

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License: This work is licensed under an Open Data Commons Attribution License v1.0.

Preferred Citation: Ma, Guanyu and McVety, Samantha and Wang, Huiyao and Lin, Lu and Tesfai, Million and Xu, Pei. (2018). E2.05 Ma 2018 ReNUWIt Annual Meeting Poster. Stanford Digital Repository. Available at: https://purl.stanford.edu/xs443ry5146

Re-inventing the Nation's Urban Water Infrastructure (ReNUWIt)

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