Converting Ni-loaded biochars into supercapacitors: Implication on the reuse of exhausted carbonaceous sorbents.

ABSTRACT: Biochar derived from waste biomass has proven as a promising sorbent for removal of heavy metals from wastewater. However, proper disposal of such a heavy metal-containing biochar is challengeable. The major objective of this study is to create a reuse way by converting the heavy metal-loaded biochar into supercapacitor. Two biochars were produced from dairy manure and sewage sludge, respectively, and subjected to sorption of Ni from solution, and then the Ni-loaded biochar underwent microwave treatments for fabrication of supercapacitor. The specific capacitance of biochar supercapacitor increased with Ni loading, especially the Ni-loaded biochar further treated with microwave in which the capacitance increased by over 2 times, compared to the original biochar supercapacitors. The increas

SUBMITTER: Wang Y 

PROVIDER: S-EPMC5269738 | biostudies-literature | 2017 Jan

REPOSITORIES: biostudies-literature