The development of cost-effective and highly efficient anode materials Ibr extracellular electron uptake is important to improve the electricity generation ofbioelectrochemical systems. An effective approach to mitiga...The development of cost-effective and highly efficient anode materials Ibr extracellular electron uptake is important to improve the electricity generation ofbioelectrochemical systems. An effective approach to mitigate harmful algal bloom （HAB） is mechanical harvesting of algal biomass, thus subsequent processing for the collected algal biomass is desired. In this study, a low-cost biochar derived from algal biomass via pyrolysis was utilized as an anode material tbr efficient electron uptake. Electrochemical properties of the algal biochar and graphite plate electrodes were characterized in a bioelectrochemical system （BES）. Compared with graphite plate electrode, the algal biochar electrode could effectively utilize both indirect and direct electron transfer pathways tbr current production, and showed stronger electrochemical response and better adsorption of redox mediators. The maximum current density of algal biochar anode was about 4.1 times higher than graphite plate anode in BES. This work provides an application potential for collected HAB to develop a cost-effective anode material for eff-cient extracellular electron uptake in BES and to achieve waste resource utilization.展开更多
基金This work was supported by the National Natural Science Foundation of China （Grant Nos. 21477121 and 51538012） and the Fundamental Research Funds for the Central Universities.
文摘The development of cost-effective and highly efficient anode materials Ibr extracellular electron uptake is important to improve the electricity generation ofbioelectrochemical systems. An effective approach to mitigate harmful algal bloom （HAB） is mechanical harvesting of algal biomass, thus subsequent processing for the collected algal biomass is desired. In this study, a low-cost biochar derived from algal biomass via pyrolysis was utilized as an anode material tbr efficient electron uptake. Electrochemical properties of the algal biochar and graphite plate electrodes were characterized in a bioelectrochemical system （BES）. Compared with graphite plate electrode, the algal biochar electrode could effectively utilize both indirect and direct electron transfer pathways tbr current production, and showed stronger electrochemical response and better adsorption of redox mediators. The maximum current density of algal biochar anode was about 4.1 times higher than graphite plate anode in BES. This work provides an application potential for collected HAB to develop a cost-effective anode material for eff-cient extracellular electron uptake in BES and to achieve waste resource utilization.
