title: Preparation of high adsorption capacity bio-chars from waste biomass.
abstract: Bio-chars with high adsorption capacity derived from rice-husks and corncobs were prepared at different retention times (RTs) in a pyrolysis reactor. At a fixed pyrolysis temperature, the pyrolysis RT is a key factor influencing the surface areas and functional group contents of the bio-chars, and further influencing their adsorption capacities. The results indicate that the bio-char prepared at RT of 1.6s exhibits a higher phenol adsorption capacity (589 mg g(-1)) than other bio-chars and many activated carbons reported in the literature. An adsorption mechanism based on acid-base interaction and hydrogen binding between phenol and the functional groups was proposed to elucidate the adsorption process. An economic evaluation of the use of bio-chars as adsorbents was made.
authors: Department of Chemistry, University of Science and Technology of China, Hefei 230026, China.
authors: Wu-Jun
authors: WJ
authors: Liu
authors: Fan-Xin
authors: FX
authors: Zeng
authors: Hong
authors: H
authors: Jiang
authors: Xue-Song
authors: XS
authors: Zhang
mesh_terms: D000327:Adsorption; D018533:Biomass; D019800:Phenol / Q000737:chemistry; D013499:Surface Properties
chemical_list: D019800:Phenol