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Aerobic Biodegradation of Nitroglycerin in a Sequencing Batch Reactor

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Abstract:

Biological treatment of nitroglycerin (glycerol trinitrate [GTN]) by a mixed microbial culture was examined under aerobic conditions in a bench-scale sequencing batch reactor with GTN present as a minor component in the feed. Initial operation demonstrated the resistance of GTN and glycerol dinitrates (GDNs) to microbial attack. The presence of GTN and GDNs adversely affected microbial activity, reflected by erratic mixed liquor suspended solids concentrations and low chemical oxygen demand removal efficiencies. Complete removal of GTN and GDNs was contingent on addition of a GTN-adapted inoculum. Transient accumulation and subsequent removal of 1,2-GDN, 1,3-GDN, and nitrite were measured during individual reaction cycles. Complete mineralization of GTN was confirmed and GDN denitration was the rate limiting step governing GTN mineralization.

Keywords: BIODEGRADATION; DENITRATION; GLYCEROL DINITRATE; GLYCEROL MONONITRATE; GLYCEROL TRINITRATE; NITRATE ESTER; NITROGLYCERIN; SEQUENCING BATCH REACTOR

Document Type: Research Article

DOI: http://dx.doi.org/10.2175/106143000X138058

Publication date: July 1, 2000

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  • Water Environment Research® (WER®) publishes peer-reviewed research papers, research notes, state-of-the-art and critical reviews on original, fundamental and applied research in all scientific and technical areas related to water quality, pollution control, and management. An annual Literature Review provides a review of published books and articles on water quality topics from the previous year.

    Published as: Sewage Works Journal, 1928 - 1949; Sewage and Industrial Wastes, 1950 - 1959; Journal Water Pollution Control Federation, 1959 - Oct 1989; Research Journal Water Pollution Control Federation, Nov 1989 - 1991; Water Environment Research, 1992 - present.
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