Sorption characteristics and mechanisms of organic contaminant to carbonaceous biosorbents

Sorption characteristics and mechanisms of organic contaminant to carbonaceous biosorbents

in aqueous solution

作者：; 作者机构：; 来源：中国科学 年：2008 卷：000 期：005

页码：P.464-472 页数：9

中图分类：O647.31 正文语种：CHI 关键词：

carbonaceous;biosorbent;organic;contaminant;partition;adsorption;wastewater;treatment

摘要：A series of carbonaceous biosorbents was prepared by pyrolyzing pine needles,a model biomass,at various temperatures (100-700℃) under an oxygen-limited condition for 6h. The elemental composi-tions and the specific surface areas (BET-N2) of the biosorbents were analyzed. Sorption properties of 4-nitrotoluene to the biosorbents and their mechanisms were investigated,and then correlated with the structures of the biosorbents. The result shows that with the increase of the pyrolytic temperature,the aromaticity of the carbonaceous

biosorbents increases dramatically and the polarity (the (N+O)/C atomic