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Aerobic Biodegradation of Nitroglycerin in a Sequencing Batch Reactor
Author(s) -
Accashian J.V.,
Smets Barth F.,
Kim ByungJoon
Publication year - 2000
Publication title -
water environment research
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.356
H-Index - 73
eISSN - 1554-7531
pISSN - 1061-4303
DOI - 10.2175/106143000x138058
Subject(s) - biodegradation , chemistry , sequencing batch reactor , mineralization (soil science) , nitrite , bioreactor , glycerol , oxygen , chemical oxygen demand , volatile suspended solids , batch reactor , nitroglycerin (drug) , chromatography , environmental chemistry , waste management , nitrate , nitrogen , biochemistry , organic chemistry , wastewater , catalysis , anesthesia , medicine , engineering
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.