Biodegradation tests of mercaptocarboxylic acids, their esters, related divalent sulfur compounds and mercaptans

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Biodegradation tests of mercaptocarboxylic acids, their esters, related divalent sulfur compounds and mercaptans. / Rücker, Christoph; Mahmoud, Waleed M.M.; Schwartz, Dirk et al.
In: Environmental Science and Pollution Research, Vol. 25, No. 19, 01.07.2018, p. 18393-18411.

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Rücker C, Mahmoud WMM, Schwartz D, Kümmerer K. Biodegradation tests of mercaptocarboxylic acids, their esters, related divalent sulfur compounds and mercaptans. Environmental Science and Pollution Research. 2018 Jul 1;25(19):18393-18411. Epub 2018 Apr 17. doi: 10.1007/s11356-018-1812-x

Bibtex

@article{64dbfaf9bb5d48cc94867b863eabeb81,
title = "Biodegradation tests of mercaptocarboxylic acids, their esters, related divalent sulfur compounds and mercaptans",
abstract = "Mercaptocarboxylic acids and their esters, a class of difunctional compounds bearing both a mercapto and a carboxylic acid or ester functional group, are industrial chemicals of potential environmental concern. Biodegradation of such compounds was systematically investigated here, both by literature search and by experiments (Closed Bottle Test OECD 301D and Manometric Respirometry Test OECD 301F). These compounds were found either readily biodegradable or at least biodegradable to a significant extent. Some related compounds of divalent sulfur were tested for comparison (mercaptans, sulfides, disulfides). For the two relevant monofunctional compound classes, carboxylic acids/esters and mercaptans, literature data were compiled, and by comparison with structurally similar compounds without these functional groups, the influence of COOH/COOR{\textquoteright} and SH groups on biodegradability was evaluated. Thereby, an existing rule of thumb for biodegradation of carboxylic acids/esters was supported by experimental data, and a rule of thumb could be formulated for mercaptans. Concurrent to biodegradation, abiotic processes were observed in the experiments, rapid oxidative formation of disulfides (dimerisation of monomercaptans and cyclisation of dimercaptans) and hydrolysis of esters. Some problems that compromise the reproducibility of biodegradation test results were discussed.",
keywords = "Biodegradation rules of thumb, Closed Bottle Test, Difunctional compounds, Manometric Respirometry Test, Mercaptans, Mercaptocarboxylic acid esters, Mercaptocarboxylic acids, Ready biodegradability tests, Chemistry",
author = "Christoph R{\"u}cker and Mahmoud, {Waleed M.M.} and Dirk Schwartz and Klaus K{\"u}mmerer",
note = "Funding Information: Funding information This study was funded by the European Regional Development Fund, grant agreement no. CCI No 2007DE161PR001 in the L{\"u}neburg Innovation Incubator. Publisher Copyright: {\textcopyright} 2018, The Author(s).",
year = "2018",
month = jul,
day = "1",
doi = "10.1007/s11356-018-1812-x",
language = "English",
volume = "25",
pages = "18393--18411",
journal = "Environmental Science and Pollution Research",
issn = "0944-1344",
publisher = "Springer",
number = "19",

}

RIS

TY - JOUR

T1 - Biodegradation tests of mercaptocarboxylic acids, their esters, related divalent sulfur compounds and mercaptans

AU - Rücker, Christoph

AU - Mahmoud, Waleed M.M.

AU - Schwartz, Dirk

AU - Kümmerer, Klaus

N1 - Funding Information: Funding information This study was funded by the European Regional Development Fund, grant agreement no. CCI No 2007DE161PR001 in the Lüneburg Innovation Incubator. Publisher Copyright: © 2018, The Author(s).

PY - 2018/7/1

Y1 - 2018/7/1

N2 - Mercaptocarboxylic acids and their esters, a class of difunctional compounds bearing both a mercapto and a carboxylic acid or ester functional group, are industrial chemicals of potential environmental concern. Biodegradation of such compounds was systematically investigated here, both by literature search and by experiments (Closed Bottle Test OECD 301D and Manometric Respirometry Test OECD 301F). These compounds were found either readily biodegradable or at least biodegradable to a significant extent. Some related compounds of divalent sulfur were tested for comparison (mercaptans, sulfides, disulfides). For the two relevant monofunctional compound classes, carboxylic acids/esters and mercaptans, literature data were compiled, and by comparison with structurally similar compounds without these functional groups, the influence of COOH/COOR’ and SH groups on biodegradability was evaluated. Thereby, an existing rule of thumb for biodegradation of carboxylic acids/esters was supported by experimental data, and a rule of thumb could be formulated for mercaptans. Concurrent to biodegradation, abiotic processes were observed in the experiments, rapid oxidative formation of disulfides (dimerisation of monomercaptans and cyclisation of dimercaptans) and hydrolysis of esters. Some problems that compromise the reproducibility of biodegradation test results were discussed.

AB - Mercaptocarboxylic acids and their esters, a class of difunctional compounds bearing both a mercapto and a carboxylic acid or ester functional group, are industrial chemicals of potential environmental concern. Biodegradation of such compounds was systematically investigated here, both by literature search and by experiments (Closed Bottle Test OECD 301D and Manometric Respirometry Test OECD 301F). These compounds were found either readily biodegradable or at least biodegradable to a significant extent. Some related compounds of divalent sulfur were tested for comparison (mercaptans, sulfides, disulfides). For the two relevant monofunctional compound classes, carboxylic acids/esters and mercaptans, literature data were compiled, and by comparison with structurally similar compounds without these functional groups, the influence of COOH/COOR’ and SH groups on biodegradability was evaluated. Thereby, an existing rule of thumb for biodegradation of carboxylic acids/esters was supported by experimental data, and a rule of thumb could be formulated for mercaptans. Concurrent to biodegradation, abiotic processes were observed in the experiments, rapid oxidative formation of disulfides (dimerisation of monomercaptans and cyclisation of dimercaptans) and hydrolysis of esters. Some problems that compromise the reproducibility of biodegradation test results were discussed.

KW - Biodegradation rules of thumb

KW - Closed Bottle Test

KW - Difunctional compounds

KW - Manometric Respirometry Test

KW - Mercaptans

KW - Mercaptocarboxylic acid esters

KW - Mercaptocarboxylic acids

KW - Ready biodegradability tests

KW - Chemistry

UR - http://www.scopus.com/inward/record.url?scp=85045479823&partnerID=8YFLogxK

U2 - 10.1007/s11356-018-1812-x

DO - 10.1007/s11356-018-1812-x

M3 - Journal articles

C2 - 29667058

AN - SCOPUS:85045479823

VL - 25

SP - 18393

EP - 18411

JO - Environmental Science and Pollution Research

JF - Environmental Science and Pollution Research

SN - 0944-1344

IS - 19

ER -

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