title: The characteristics of phenanthrene biosorption by chemically modified biomass of Phanerochaete chrysosporium.
abstract: The natural (S0) and chemically modified Phanerochaete chrysosporium including the methylation of amino groups (S1), acetylation of hydroxyl groups (S2), lipid removal (S3), esterification of carboxyl groups (S4), and base hydrolysis (S5) were characterized, and their sorption for phenanthrene (PHE) was investigated. The sorption isotherm of PHE on natural biomasses was apparently linear, while it was nonlinear for the modified ones. The partition coefficient (K d ) describing the sorption affinity of PHE by biomasses followed the order of S0 (9.24 L g(-1)) > S5 (8.94 L g(-1)) > S1 (7.13 L g(-1)) > S2 (6.97 L g(-1)) > S3 (6.38 L g(-1)) > S4 (3.51 L g(-1)) and decreased as temperature increased. The PHE adsorption fitted well to the pseudo-second-order kinetic model, and the sorption capacity was in the order of S5 (2041.5 μg g(-1)) > S0 (1768.8 μg g(-1)) > S2 (1570.9 μg g(-1)) > S1 (1552.9 μg g(-1)) > S3 (1346.4 μg g(-1)) > S4 (991.0 μg g(-1)). Moreover, the π-π and electron donor-acceptor interactions may govern PHE sorption which processed spontaneously and exothermally. The natural and modified biomasses, especially the base hydrolysis treated ones, were economical and effective biosorbents for PHE removal.
authors: Institute of Soil and Water Resources and Environmental Science, Zhejiang Provincial Key Laboratory of Subtropical Soil and Plant Nutrition, Zhejiang University, Hangzhou, 310058, China.
authors: Haiping
authors: H
authors: Gu
authors: Xiaoyan
authors: X
authors: Luo
authors: Haizhen
authors: H
authors: Wang
authors: Laosheng
authors: L
authors: Wu
authors: Jianjun
authors: J
authors: Wu
authors: Jianming
authors: J
authors: Xu
mesh_terms: D000327:Adsorption; D001673:Biodegradation, Environmental; D018533:Biomass; D020075:Phanerochaete / Q000737:chemistry* / Q000378:metabolism*; D010616:Phenanthrenes / Q000378:metabolism*; D013696:Temperature
chemical_list: D010616:Phenanthrenes; C031181:phenanthrene