Biodegradation of sodium alkyl poly(oxyalkylene)sulfates

Biodegradation of sodium alkyl poly(oxyalkylene)sulfates The biodegradability of sodium alkylpoly(oxyalkylene)sulfates was studied under aerobic conditions by oxygen consumption, total organic corbon (TOC) and methylene blue active substance (MBAS) measurements. MBAS of linear alkylpoly(oxyalkylene)sulfates with propylene oxide (APS) or ethylene oxide (AES) disappeared within 5 days, whereas AES with branched alkyl chains were degraded less than linear AES. APS with propylene oxide from 1 to 3 mol showed BOD/ThOD values of more than 40% after 6 days. Therefore, these surfactants are considered to be readily biodegradable. In comparison to the biodegradability of APS and AES, the existence of propylene oxide groups resulted in a slight decreasing in oxygen consumption and TOC removal. Linear APS with PO of 1~3 mol were degraded according to Swisher's distance principle up to a C 16 alkyl chain length. That is, increasing distance principle up to a C 16 alkyl chain length. That is, increasing distance between sulfate and chain end increased the rate of biodegradation of these surfactants. Furthermore, from the biodegradation test of 35 S-C 12 E 3 S, it is suggested that the initial step of biodegradation is attack on the terminal methyl group. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Journal of the American Oil Chemists' Society Springer Journals

Biodegradation of sodium alkyl poly(oxyalkylene)sulfates

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Publisher
Springer Journals
Copyright
Copyright © 1982 by American Oil Chemists’ Society
Subject
Chemistry; Chemistry/Food Science, general; Analytical Chemistry; Biotechnology; Industrial Chemistry/Chemical Engineering; Biomaterials; Agriculture
ISSN
0003-021X
eISSN
1558-9331
DOI
10.1007/BF02662237
Publisher site
See Article on Publisher Site

Abstract

The biodegradability of sodium alkylpoly(oxyalkylene)sulfates was studied under aerobic conditions by oxygen consumption, total organic corbon (TOC) and methylene blue active substance (MBAS) measurements. MBAS of linear alkylpoly(oxyalkylene)sulfates with propylene oxide (APS) or ethylene oxide (AES) disappeared within 5 days, whereas AES with branched alkyl chains were degraded less than linear AES. APS with propylene oxide from 1 to 3 mol showed BOD/ThOD values of more than 40% after 6 days. Therefore, these surfactants are considered to be readily biodegradable. In comparison to the biodegradability of APS and AES, the existence of propylene oxide groups resulted in a slight decreasing in oxygen consumption and TOC removal. Linear APS with PO of 1~3 mol were degraded according to Swisher's distance principle up to a C 16 alkyl chain length. That is, increasing distance principle up to a C 16 alkyl chain length. That is, increasing distance between sulfate and chain end increased the rate of biodegradation of these surfactants. Furthermore, from the biodegradation test of 35 S-C 12 E 3 S, it is suggested that the initial step of biodegradation is attack on the terminal methyl group.

Journal

Journal of the American Oil Chemists' SocietySpringer Journals

Published: Jul 1, 1982

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