Journal
JOURNAL OF MEMBRANE SCIENCE
Volume 489, Issue -, Pages 28-35Publisher
ELSEVIER
DOI: 10.1016/j.memsci.2015.03.058
Keywords
Chlorine; Polyvinyl pyrrolidone-Polysulfone; (PVP-PSF) membrane; Total organic carbon (TOC); Byproducts
Categories
Funding
- Center for the Environmental Implications of NanoTechnology (CEINT) by the NSF
- EPA under NSF [EF-0830093]
- NSF
Ask authors/readers for more resources
In this work, the release of organic compounds, the variations of membrane properties and the formation of toxic byproducts during chlorine treatment of polyvinyl pyrrolidone-polysulfone (PVP-PSF) membranes were investigated. Chlorine treatment decreased bovine serum albumin rejection, permeability and hydrophilicity of PVP-PSF membranes and resulted in the release of organic compounds as measured by total organic carbon (TOC). More organic compounds were released from the membranes at higher chlorine concentrations and higher initial values of chlorine contact pH. The presence of bromide that can be oxidized to bromine by chlorine also increased the release of organic matter from the membranes and contributed to the formation of high toxic brominatecl byproducts. Five toxic volatile chlorinated byproducts, chloroform, chloral hydrate, 1,1-dichloro-2-propanone, 1,1,1-trichloro-2-propanone and trichloronitromethane, were formed during chlorination of the organic compounds from the PVP-PSF membranes. Three brominated byproducts including bromodichloromethane, dibromochloromethane and bromoform were determined in the presence of bromide. The PVP appears to be more susceptible than PSF to chlorine destruction in the PVP-PSF membranes as analysis of the chlorinated byproducts derived from PVP precursors. (C) 2015 Elsevier B.V. All rights reserved,
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available