Development of new generation sediment remediation technology by sediment microbial fuel cell

2014 Fiscal Year Final Research Report

• Project/Area Number: 25889011
• Research Category: Grant-in-Aid for Research Activity Start-up
• Allocation Type: Single-year Grants
• Research Field: Civil and environmental engineering
• Research Institution: Gunma University
• Principal Investigator: KUBOTA Keiichi 群馬大学, 大学院理工学府, 助教 (50707510)
• Project Period (FY): 2013-08-30 – 2015-03-31
• Keywords: 微生物燃料電池 / 堆積物微生物燃料電池 / 底質浄化

Outline of Final Research Achievements

In the present study, sediment microbial fuel cells (SMFC) was applied for the amendment of marine sediment core sample with very high organics and water content taken from strictly anoxic bottom environments. And, we evaluated the effect of difference of anode insertion depth on SMFC. As a results, suspended solid base BOD (SS-BOD) for a sediment microbial fuel cell condition was decreased by 30 to 40% compared to an open-circuit condition. Additionally, sediment near an electrode was observed to a high SS-BOD degradation rate and an elevation of ORP. From this result, applying of SMFC can expect to inhibition of generation of toxic substance as hydrogen sulfide. SMFC’s electricity generation performance was make a big difference depending on anode insertion depth. Especially, SMFC of placing anode at only upper side, was observed low electricity generation performance. These results shows that SMFC have some amending effect for organics-rich and reductive sediments.

Free Research Field

環境工学