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REMEDIATION OF TNT USING PINE BARK IN A BATCH STUDY: COMETABOLIC REDUCTION AND SORPTION
Mälardalen University, School of Sustainable Development of Society and Technology. Mälardalen University, School of Business, Society and Engineering. (ACWA/FUTURE ENERGY)
Mälardalen University, School of Sustainable Development of Society and Technology. Mälardalen University, School of Business, Society and Engineering. (ACWA/FUTURE ENERGY)ORCID iD: 0000-0003-3311-9465
Mälardalen University, School of Sustainable Development of Society and Technology. Mälardalen University, School of Business, Society and Engineering. (ACWA/FUTURE ENERGY)ORCID iD: 0000-0001-5480-0167
Mälardalen University, School of Business, Society and Engineering. (ACWA/FUTURE ENERGY)
2011 (English)Conference paper, Published paper (Refereed)
Abstract [en]

Water contaminated with 2,4,6-trinitrotoluene (TNT) is regulated as a hazardous material. The objective of this study was to evaluate two bioremediation methods, namely, sorption and anoxic degradation for the removal of TNT from contaminated water in 7-day long batch experiment. TNT was co-metabolized with glucose under oxygen-limiting conditions using a mixed inoculum culture from a wastewater treatment plant, enriched with glucose and TNT. By the third day of the experiment most of TNT was adsorbed onto the pine bark and 96-98% of TNT was degraded. The results also indicated that the concentration of glucose is an important factor for the effective degradation of TNT, which is consistent with earlier research; the content of 0.15% w/v resulted in a more rapid TNT removal in comparison with 0.50% w/v. Two metabolites; 2-amino-4,6-dinitrotoluene (2-ADNT) and 4-amino-2,6-dinitrotoluene (4-ADNT) were detected. The para nitro group of TNT was preferentially reduced compared to the ortho nitro group. On the seventh day of incubation the concentration of 4-ADNT had decreased by 10% and 2-ADNT was no longer detectable. 

Place, publisher, year, edition, pages
2011.
National Category
Engineering and Technology
Research subject
Energy- and Environmental Engineering
Identifiers
URN: urn:nbn:se:mdh:diva-18291OAI: oai:DiVA.org:mdh-18291DiVA, id: diva2:608342
Conference
14th International Waste Management and Landfill Symposium
Available from: 2013-02-27 Created: 2013-02-27 Last updated: 2013-12-04Bibliographically approved

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Nehrenheim, EmmaOdlare, Monica

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