title: Simultaneous cadmium removal and 2,4-dichlorophenol degradation from aqueous solutions by Phanerochaete chrysosporium.
abstract: Phanerochaete chrysosporium has been recognised as an effective bioremediation agent due to its unique degradation to xenobiotic and biosorption ability to heavy metals. However, few studies have focused on the simultaneous removal of heavy metals and organic pollutants. The aim of this work was to study the feasibility of simultaneous cadmium removal and 2,4-dichlorophenol (2,4-DCP) degradation in P. chrysosporium liquid cultures. The removal efficiencies were pH dependent and the maximum removal efficiencies were observed at pH 6.5 under an initial cadmium concentration of 5 mg/L and an initial 2,4-DCP concentration of 20 mg/L. The removal efficiencies for cadmium and 2,4-DCP reached 63.62% and 83.90%, respectively, under the optimum conditions. The high production levels of lignin peroxidase (7.35 U/mL) and manganese peroxidase (8.30 U/mL) resulted in an increase in 2,4-DCP degradation. The protein content decreased with increasing cadmium concentration. The surface characteristics and functional groups of the biomass were studied by scanning electron microscopy and a Fourier-transformed infrared spectrometer. The results showed that the use of P. chrysosporium is promising for the simultaneous removal of cadmium and 2,4-DCP from liquid media.
authors.affiliation: College of Environmental Science and Engineering, Hunan University, Changsha 410082, People's Republic of China.
authors.forename: Anwei
authors.initials: A
authors.lastname: Chen
authors.forename: Guangming
authors.initials: G
authors.lastname: Zeng
authors.forename: Guiqiu
authors.initials: G
authors.lastname: Chen
authors.forename: Jiaqi
authors.initials: J
authors.lastname: Fan
authors.forename: Zhengjun
authors.initials: Z
authors.lastname: Zou
authors.forename: Hui
authors.initials: H
authors.lastname: Li
authors.forename: Xinjiang
authors.initials: X
authors.lastname: Hu
authors.forename: Fei
authors.initials: F
authors.lastname: Long
mesh_terms: D001673:Biodegradation, Environmental; D002104:Cadmium / Q000378:metabolism*; D002733:Chlorophenols / Q000378:metabolism*; D006863:Hydrogen-Ion Concentration; D010544:Peroxidases / Q000378:metabolism; D020075:Phanerochaete / Q000378:metabolism*; D012996:Solutions; D014873:Water Pollutants / Q000378:metabolism; D014876:Water Pollution
chemical_list: D002733:Chlorophenols; D012996:Solutions; D014873:Water Pollutants; D002104:Cadmium; D010544:Peroxidases; C042858:lignin peroxidase; C051129:manganese peroxidase; C004762:2,4-dichlorophenol