title: [Effect of pH on the biosorption behavior of 4-CP onto anaerobic granular sludge].
abstract: The effect of the initial pH value on the biosorption behavior of 4-CP onto anaerobic granular sludge was investigated in this paper. The experimental results indicated that the initial pH value was the important parameter affecting the biosorption of 4-CP, and the biosorption capacity of anaerobic granular sludge decreased with the increase of pH value. The biosorption capacity of 4-CP was 6.675 mg/g at pH 2.25, while it was only 0.260 mg/g at pH 10.27. The equilibrium isotherm of 4-CP biosorption by anaerobic granular sludge was investigated at different pH values, and the results showed that the biosorption behavior of 4-CP could be described by the Langmuir model quite well. The coefficients of the Langmuir and the Freundlich equations of 4-CP biosorption by anaerobic granular sludge at different pH values were given.
authors.affiliation: Laboratory of Environmental Technology, Insitute of Nuclear and New Energy Techonology, Tsinghua University, Beijing 100084, China. gry04@mails.tsinghua.edu.cn
authors.forename: Rui-Ying
authors.initials: RY
authors.lastname: Gao
authors.forename: Jian-Long
authors.initials: JL
authors.lastname: Wang
mesh_terms: D000327:Adsorption; D001421:Bacteria, Anaerobic / Q000378:metabolism*; D019149:Bioreactors / Q000382:microbiology; D002733:Chlorophenols / Q000737:chemistry / Q000378:metabolism*; D006863:Hydrogen-Ion Concentration; D012722:Sewage / Q000737:chemistry / Q000382:microbiology*; D014874:Water Pollutants, Chemical / Q000737:chemistry / Q000378:metabolism*
chemical_list: D002733:Chlorophenols; D012722:Sewage; D014874:Water Pollutants, Chemical; C029107:4-chlorophenol