Advanced Environmental Technologies LLC
Dr. Song Jin is a Principal Scientist at Advanced Environmental Technologies LLC. He also serves as the Associate Director of Biogenic Natural Gas Research Center and an Adjunct Professor at the University of Wyoming.
Song has 20+ years of experience in bioremediation, with focus on development and implementation of innovative remedial technologies treat recalcitrant contaminants. Song is one of the pioneers to develop and patent bioelectrochemical systems in remediating petroleum hydrocarbons, TCE, perchlorate, and Cr VI in groundwater and soils. He has also pioneered biological source treatment of acid mine drainage, and conversion of lower-grade coal to natural gas. Song received his Ph.D. with emphasis on environmental biogeochemistry from the University of Wyoming. He has published over 120+ papers in peer-review journals and technical conferences. He holds 27 awarded and pending patents
Previously Dr. Jin served as the CTO of Next Fuel Inc., Research Director of Ciris Energy, and Principal Scientist at MWH.
FLASH POSTER PRESENTER – Biological Treatment: Strength in Small Packages
Bioelectrochemically Enhanced Biodegradation of Benzene in Groundwater
An innovative technology that utilizes “bioelectrochemical” pathways for enhancing organic compound biodegradation without energy input and consumable materials was recently developed, patented, and deployed for treating groundwater contaminants. The bioelectrochemical technology (named “E-Redox”) stimulates bio-oxidation reactions of contaminants by providing an electron transfer conduit and expediting the electron transport in the impacted matrix, via electrodes and a conductive circuit to a perpetual electron acceptor. This technology consumes no energy during operation; in the contrary, it generates electricity thanks to the electron flow within the system. Such generated electricity can serve as a convenient indicator of biodegradation in the impacted matrices.
Laboratory studies previously demonstrated a 0.5-10 x increase of petroleum-hydrocarbon biodegradation rates in contaminated groundwater and sediments. Field pilot tests were recently conducted at fuel station sites in the Denver, Colorado area, where the main contaminant of concern was benzene. Data indicated that the benzene degradation rates of the bioelectrochemical treatment exceeded that of aeration, and more than doubled that from treatments of amending other alternative electron acceptors of nitrate and sulfate. The constant generation of electrical voltages in the installed bioelectrochemical devices during the field application also served as an important monitoring parameter for active biodegradation. Within 4 months after the field implementation of the technology, benzene concentrations in the groundwater decreased by more than 90% to below 0.002 μg/L. Additionally, over 50% reductions in other petroleum hydrocarbon concentrations were observed in conjunction with the benzene degradation. Overall, the field pilot test demonstrated that the bioelectrochemical technology is effective in enhancing benzene biodegradation with zero energy and consumable material input, achieving a truly sustainable remediation.