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|Title:||Biosorption of Cr (VI) with <i style="">Trichoderma viride</i> immobilized fungal biomass and cell free Ca-alginate beads|
|Authors:||Bishnoi, Narsi R|
<i style="">Trichoderma viride</i>
|Abstract:||Ability of Cr (VI) biosorption with immobilized <i style="">Trichoderma viride</i> biomass and cell free Ca-alginate beads was studied in the present study. Biosorption efficiency in the powdered fungal biomass entrapped in polymeric matric of calcium alginate compared with cell free calcium alginate beads. Effect of <i style="">p</i>H, initial metal ion concentration, time and biomass dose on the Cr (VI) removal by immobilized and cell free Ca-alginate beads were also determined. Biosorption of Cr (VI) was <i style="">p</i>H dependent and the maximum adsorption was observed at <i style="">p</i>H 2.0. The adsorption equilibrium was reached in 90 min. The maximum adsorption capacity of 16.075 mgg<sup>-1 </sup>was observed at dose 0.2 mg in 100 ml of Cr (VI) solution. The high value of kinetics rate constant K<sub>ad </sub>(3.73×10<sup>-2</sup>) with immobilized fungal biomass and (3.75×10<sup>-2</sup>) with cell free Ca-alginate beads showed that the sorption of Cr (VI) ions on immobilized biomass and cell free Ca-alginate beads followed pseudo first order kinetics. The experimental results were fitted satisfactory to the Langmuir and Freundlich isotherm models. The hydroxyl (-OH) and amino (-NH) functional groups were responsible in biosorption of Cr (VI) with fungal biomass spp. <i style="">Trichoderma viride</i> analysed using Fourier Transform Infrared (FTIR) Spectrometer.|
|ISSN:||0975-1009 (Online); 0019-5189 (Print)|
|Appears in Collections:||IJEB Vol.45(07) [July 2007]|
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