Sorption of heavy metals from electroplating effluent using immobilized biomass Trichoderma viride in a continuous packed-bed column |
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Authors: | Rajender Kumar Divya BhatiaRajesh Singh Suman RaniNarsi R. Bishnoi |
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Affiliation: | a Department of Environmental Science & Engineering, Guru Jambheshwar University of Science and Technology, Hisar, Haryana 125001, India b Université Paris-Est, Laboratoire Géomatériaux et Environnement, EA 4119, 5 bd Descartes, 77454 Marne la Vallée Cedex 2, France |
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Abstract: | The sorption of heavy metals ions by immobilized Trichoderma viride biomass in a packed-bed column was studied. Fungal biomass T. viride was immobilized to Ca-alginate used for removal of Cr(VI), Ni(II) and Zn(II) ions from synthetic solutions and electroplating effluent. The experiments were conducted to study the effect of important design parameters such as bed height, flow rate and initial concentration of metal ions. The maximum sorption capacity was observed at flow rate 5 ml/min, bed height 20 cm and metal ions concentration 50 mg/L with immobilized biomass. Whereas, breakthrough time and saturation time decreased with increase flow rate and metal ions concentration and an inverse condition was found in bed height. The bed depth service time (BDST) Adams-Bohart model was used to analyze the experimental data. The regeneration efficiency was observed 40.1%, 75% and 53% for Cr(VI), Ni(II) and Zn(II) without any significant alteration in sorption capacity after 5th sorption-desorption cycles. |
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Keywords: | Immobilized biosorbent Packed-bed column Breakthrough time Sorption capacity Bohart-Adams (BDST) model |
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