Mechanism of N-nitrosamine formation from secondary amine on the surface of activate carbon

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dc.contributor.author Padhye, Lokesh en
dc.contributor.author Huang, C-H en
dc.coverage.spatial San Diego, United States en
dc.date.accessioned 2016-12-15T00:18:25Z en
dc.date.issued 2012-03-26 en
dc.identifier.citation In 243rd ACS National Meeting. San Diego, United States, 25-29 March 2012 en
dc.identifier.uri http://hdl.handle.net/2292/31392 en
dc.description.abstract Our study demonstrates that many commercial activated carbon (AC) particles may catalyze transformation of secondary amines to yield trace levels of N-nitrosamines under ambient aerobic conditions. The results show that the AC-catalyzed nitrosamine formation requires both atmospheric oxygen and nitrogen. AC’s surface reactive sites react with molecular oxygen to form reactive oxygen species (ROS), which facilitate fixation of molecular nitrogen on the carbon surfaces to generate reactive nitrogen species (RNS) likely nitrous oxide and hydroxylamine that can react with adsorbed amines to form nitrosamines. AC’s properties play a crucial role as more nitrosamine formation is associated with carbon surfaces with higher surface area, more surface defects, reduced surface properties, higher O2 uptake capacity, and higher carbonyl group content. This study is a first of its kind on the nitrosamine formation mechanism involving nitrogen fixation on AC surfaces and the information will be useful for minimization of nitrosamines in AC-based processes. en
dc.description.uri http://cen.acs.org/articles/90/i10/243rd-ACS-National-Meeting.html en
dc.publisher American Chemical Society (ACS) en
dc.relation.ispartof 243rd ACS National Meeting en
dc.rights Items in ResearchSpace are protected by copyright, with all rights reserved, unless otherwise indicated. Previously published items are made available in accordance with the copyright policy of the publisher. Details obtained from https://www.acs.org/content/acs/en.html en
dc.rights.uri https://researchspace.auckland.ac.nz/docs/uoa-docs/rights.htm en
dc.title Mechanism of N-nitrosamine formation from secondary amine on the surface of activate carbon en
dc.type Conference Item en
pubs.author-url https://www.acs.org/content/acs/en/meetings/nationalmeetings/programarchive.html en
pubs.finish-date 2012-03-29 en
pubs.start-date 2012-03-25 en
dc.rights.accessrights http://purl.org/eprint/accessRights/RestrictedAccess en
pubs.subtype Conference Paper en
pubs.elements-id 544406 en
pubs.org-id Faculty of Engineering en
pubs.org-id Civil & Environmental Engineer en
pubs.record-created-at-source-date 2016-11-02 en


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