Electricity generation from wetlands with activated carbon bioanode

International Conference on Green Agro-industry and Bioeconomy 2017

农业科学;生物科学;经济学

Sudirjo, E.^1,2 ; Buisman, C.J.N.^1 ; Strik, D.P.B.T.B.^1

Sub-Department of Environmental Technology, Wageningen University and Research, Netherlands^1

Mining and Energy Agency, Government of Landak Regency, West-Kalimantan-Province, Indonesia^2

关键词: Conductive carbon;    Electricity generation;    Electricity output;    Electrochemically active bacteria;    Plant microbial fuel cell;    Plant vitalities;    Soil composition;    Soil conductivity;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/131/1/012046/pdf
DOI  :  10.1088/1755-1315/131/1/012046

来源: IOP

【 摘 要 】

Paddy fields are potential non-tidal wetlands to apply Plant Microbial Fuel Cell (PMFC) technology. World widely they cover about 160 million ha of which 13.3 million ha is located in Indonesia. With the PMFC, in-situ electricity is generated by a bioanode with electrochemically active bacteria which use primary the organic matter supplied by the plant (e.g. as rhizodeposits and plant residues). One of limitations when installing a PMFC in a non-tidal wetland is the usage of "expensive" large amounts of electrodes to overcome the poor conductivity of wet soils. However, in a cultivated wetland such as rice paddy field, it is possible to alter soil composition. Adding a conductive carbon material such as activated carbon is believed to improve soil conductivity with minimum impact on plant vitality. The objective of this research was to study the effect of activated carbon as an alternative bioanode material on the electricity output and plants vitality. Lab result shows that activated carbon can be a potential alternative for bioanode material. It can continuously deliver current on average 1.54 A/m3 anode (0.26 A/m2 PGA or 66 mW/m2 PGA) for 98 days. Based on this result the next step is to do a test of this technology in the real paddy fields.