Andrew shared the role of first author with Jonathan Michael from the School of Biological Sciences at the Institute for Environmental Genomics at the University of Oklahoma. Additional coauthors included Yunfeng Yang, Benjamin Adams, Kathryn McBride, Yupeng Fan, Kenneth Lowe, Daliang Ning, Sindhu Jagadamma, Ji Won Moon, Dawn Klingeman, Ping Zhang, Ying Fu, Terry Hazen, and Jizhong Zhou.
Andrew is a Senior Staff Scientist with experience in groundwater remediation and redevelopment. He has experience in soil vapor remediation and microbiology. He is also an Affiliate Scientist with the US Department of Energy’s multi-institutional ENIGMA SFA, consulting on hydrogeology topics.
Water Research publishes on all aspects of the science and technology of the anthropogenic water cycle, water quality, and its management worldwide. Their audience includes biologists, chemical engineers, chemists, civil engineers, environmental engineers, limnologists, and microbiologists. It is published twice a month online by the International Water Association (IWA).
IWA is a nonprofit organization and knowledge hub for the water sector, with over 60 years’ experience connecting water professionals worldwide to find solutions to the world’s water challenges.
Abstract:
Carbon amendments designed to remediate environmental contamination lead to substantial perturbations when injected into the subsurface. For the remediation of uranium contamination, carbon amendments promote reducing conditions to allow microorganisms to reduce uranium to an insoluble, less mobile state. However, the reproducibility of these amendments and underlying microbial community assembly mechanisms have rarely been investigated in the field. In this study, two injections of emulsified vegetable oil were performed in 2009 and 2017 to immobilize uranium in the groundwater at Oak Ridge, TN, USA. Our objectives were to determine whether and how the injections resulted in similar abiotic and biotic responses and their underlying community assembly mechanisms. Both injections caused similar geochemical and microbial succession. Uranium, nitrate, and sulfate concentrations in the groundwater dropped following the injection, and specific microbial taxa responded at roughly the same time points in both injections, including Geobacter, Desulfovibrio, and members of the phylum Comamonadaceae, all of which are well established in uranium, nitrate, and sulfate reduction. Both injections induced a transition from relatively stochastic to more deterministic assembly of microbial taxonomic and phylogenetic community structures based on 16S rRNA gene analysis. We conclude that geochemical and microbial successions after biostimulation are reproducible, likely owing to the selection of similar phylogenetic groups in response to EVO injection.
More Information:
Read the article: Reproducible responses of geochemical and microbial successional patterns in the subsurface to carbon source amendment
Learn more about the journal: Water Research | Journal
Learn more about IWA: International Water Association Publications | IWA Publishing
Learn more about Andrew: Andrew Putt | LinkedIn
