日本地球惑星科学連合2023年大会

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[J] オンラインポスター発表

セッション記号 M (領域外・複数領域) » M-IS ジョイント

[M-IS09] 生物地球化学

2023年5月24日(水) 10:45 〜 12:15 オンラインポスターZoom会場 (18) (オンラインポスター)

コンビーナ:福島 慶太郎(福島大学農学群食農学類)、木庭 啓介(京都大学生態学研究センター)、大河内 直彦(海洋研究開発機構)、山下 洋平(北海道大学 大学院地球環境科学研究院)

現地ポスター発表開催日時 (2023/5/23 17:15-18:45)

10:45 〜 12:15

[MIS09-P07] Bioelectricity Measurements at Petroleum Contaminated Groundwater Remediation Sites and in a Groundwater Mesocosm

*Ned Murphy1 (1.Central Planet Repair, LLC)

キーワード:Mesocosm, Bioelectricity

Two decades of accumulated measurements of petroleum concentrations, Oxidation-Reduction Potential, and electrical conductivity provide insight into the distribution of bioelectricity within aquifers containing variable native groundwater composition and variable petroleum concentrations from releases into the environment. This information is combined with the measurements from controlled conditions within the CPR Groundwater Mesocosm.

The carbon within petroleum provides a source of electrons for microbial metabolism of the constituents which decreases the concentrations over time. The metabolism rates can be increased to accelerate the petroleum degradation in the groundwater by managing the subsurface concentrations of electron acceptor compounds. This inquiry was conducted to evaluate the applications for monitoring hydrocarbon plume degradation and whether the electrons can be harvested in the manner of microbial fuel cells used for anaerobic treatment of wastewater.

The CPR Groundwater Mesocosm is also used to measure the relationships under controlled conditions and evaluate methods for improving the understanding of these bioelectrical relationships in the subsurface environment.