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Biosorption of nonylphenol on dead biomass of Rhizopus arrhizus encapsulated in chitosan beads

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Title: Biosorption of nonylphenol on dead biomass of Rhizopus arrhizus encapsulated in chitosan beads
Authors: Lang, Weeranuch Browse this author
Dejma, Chomawan Browse this author
Sirisansaneeyakul, Sarote Browse this author
Sakairi, Nobuo Browse this author →KAKEN DB
Keywords: Biosorption
Nonylphenol
Rhizopus arrhizus
Chitosan
Kinetic modelling
Issue Date: Dec-2009
Publisher: Elsevier Ltd.
Journal Title: Bioresource Technology
Volume: 100
Issue: 23
Start Page: 5616
End Page: 5623
Publisher DOI: 10.1016/j.biortech.2009.06.021
Abstract: The nonylphenol (NP) biosorption and desorption potential for fungal biomass used under batch conditions was investigated using kinetics and isotherm models. Fungal biomass of Rhizopus arrhizus TISTR 3610 exhibited preferential uptake of NP, an endocrine disrupting chemicals. Sporangiospores, asexual spores, were immobilisation in chitosan beads. The biosorption data of NP on the moist heat inactivated R. arrhizus-chitosan beads were analyzed using four popular adsorption isotherms and, by using non-linear least-regression with the solver add-in in Microsoft Excel, correlated in order with the Fritz-Schlüender > Redlich-Peterson > Freundlich > Langmuir isotherms. The pseudo first-order kinetics was found to have the best fit with the experimental data. The diffusivity of NP in the R. arrhizus-chitosan beads was calculated using the shrinking core model, and the diffusivity values were in the ranges of 2.3736 x 10^[-4] to 1.8950 x 10^[-4] cm^[2]s^[-1]. Desorption to recover the adsorbed NP from the beads was performed in methanol and was best described using a pseudo second-order kinetic model.
Type: article (author version)
URI: http://hdl.handle.net/2115/39539
Appears in Collections:環境科学院・地球環境科学研究院 (Graduate School of Environmental Science / Faculty of Environmental Earth Science) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)

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