title: Biosorption of Acid Black 172 and Congo Red from aqueous solution by nonviable Penicillium YW 01: kinetic study, equilibrium isotherm and artificial neural network modeling.
abstract: The main objective of this work was to investigate the biosorption performance of nonviable Penicillium YW 01 biomass for removal of Acid Black 172 metal-complex dye (AB) and Congo Red (CR) in solutions. Maximum biosorption capacities of 225.38 and 411.53 mg g(-1) under initial dye concentration of 800 mg L(-1), pH 3.0 and 40 °C conditions were observed for AB and CR, respectively. Biosorption data were successfully described with Langmuir isotherm and the pseudo-second-order kinetic model. The Weber-Morris model analysis indicated that intraparticle diffusion was the limiting step for biosorption of AB and CR onto biosorbent. Analysis based on the artificial neural network and genetic algorithms hybrid model indicated that initial dye concentration and temperature appeared to be the most influential parameters for biosorption process of AB and CR onto biosorbent, respectively. Characterization of the biosorbent and possible dye-biosorbent interaction were confirmed by Fourier transform infrared spectroscopy and scanning electron microscopy.
authors.affiliation: College of Life Sciences, Zhejiang University, Hangzhou, Zhejiang Province 310058, PR China.
authors.forename: Yuyi
authors.initials: Y
authors.lastname: Yang
authors.forename: Guan
authors.initials: G
authors.lastname: Wang
authors.forename: Bing
authors.initials: B
authors.lastname: Wang
authors.forename: Zeli
authors.initials: Z
authors.lastname: Li
authors.forename: Xiaoming
authors.initials: X
authors.lastname: Jia
authors.forename: Qifa
authors.initials: Q
authors.lastname: Zhou
authors.forename: Yuhua
authors.initials: Y
authors.lastname: Zhao
mesh_terms: D000327:Adsorption; D001673:Biodegradation, Environmental; D018533:Biomass; D003224:Congo Red / Q000302:isolation & purification*; D056831:Coordination Complexes / Q000302:isolation & purification*; D006863:Hydrogen-Ion Concentration; D007700:Kinetics; D050296:Microbial Viability; D008954:Models, Biological; D009282:Naphthalenesulfonates / Q000302:isolation & purification*; D016571:Neural Networks, Computer; D010407:Penicillium / Q000254:growth & development / Q000378:metabolism* / Q000648:ultrastructure; D012996:Solutions; D017550:Spectroscopy, Fourier Transform Infrared; D013457:Sulfur Compounds / Q000302:isolation & purification*; D013696:Temperature; D013997:Time Factors; D014867:Water / Q000737:chemistry*
chemical_list: D056831:Coordination Complexes; D009282:Naphthalenesulfonates; D012996:Solutions; D013457:Sulfur Compounds; D014867:Water; D003224:Congo Red; C557641:acid black 172