Mineralization of hexachlorocyclohexane in soil during solid-phase bioremediation

Journal of Industrial Microbiology & Biotechnology
Theresa M PhillipsA G Seech

Abstract

Soil containing hexachlorocyclohexane (HCH) was spiked with (14)C-gamma-HCH and then subjected to bioremediation in bench-scale microcosms to determine the rate and extent of mineralization of the (14)C-labeled HCH to (14)CO(2). The soil was treated using two different DARAMEND amendments, D6386 and D6390. The amendments were previously found to enhance natural HCH bioremediation as determined by measuring the disappearance of parent compounds under either strictly oxic conditions (D6386), or cycled anoxic/oxic conditions (D6390). Within 80 days of the initiation of treatment, mineralization was observed in all of the strictly oxic microcosms. However, mineralization was negligible in the cycled anoxic/oxic microcosms throughout the 275-day study, even after cycling was ceased at 84 days and although significant removal (up to 51%) of indigenous gamma-HCH (146 mg/kg) was detected by GC with electron capture detector. Of the amended, strictly oxic treatments, only one, in which 47% of the spiked (14)C-HCH was recovered as (14)CO(2), enhanced mineralization compared with an unamended treatment (in which 34% recovery was measured). Other oxic treatments involving higher amendment application rates or auxiliary carbon sources were ...Continue Reading

References

Jan 1, 1988·Applied and Environmental Microbiology·A BachmannA J Zehnder
Feb 1, 1988·Applied and Environmental Microbiology·A BachmannA J Zehnder
Sep 20, 2000·Journal of Agricultural and Food Chemistry·H K ManonmaniA A Kunhi
Jun 26, 2001·Journal of Industrial Microbiology & Biotechnology·Y NagataM Takagi

❮ Previous
Next ❯

Citations

Mar 4, 2010·Microbiology and Molecular Biology Reviews : MMBR·Rup LalJohn G Oakeshott
Mar 22, 2014·Environmental Science and Pollution Research International·Konstantin VolchekCarl E Brown
Sep 16, 2016·Environmental Science and Pollution Research International·Christophe MouvetAnne Mercier
May 4, 2005·Biodegradation·Theresa M PhillipsJack T Trevors
Feb 3, 2019·Environmental Science and Pollution Research International·Eid Alabed AlibrahimChristophe Mouvet
Dec 7, 2019·The Science of the Total Environment·Patrick OllivierChristophe Mouvet

❮ Previous
Next ❯

Related Concepts

Related Feeds

Bioremediation (ASM)

Bioremediation is the treatment and removal of harmful pollutants or contaminants through the use of microorganisms. Discover the latest research here.