Paper Title:
Biosorption of Cr(VI) from Aqueous Solution by Aspergillus Niger
  Abstract

In this study, Biosorption of hexavalent chromium ions from aqueous solution by using biomass of Aspergillus niger was investigated. Different parameters such as initial pH, biosorbent amount, contact time and temperature were explored. The biosorption of Cr (VI) ions was highly pH dependent and the optimum pH for biosorption of Cr (VI) ions was found to be 2.0. Biosorption capacity of Cr (VI) ions decreased with increased biosorbent dosage. The biosorption equilibrium was established in about 120min of contact time. Equilibrium uptake of Cr (VI) ions onto biomass increased from 12.57 mg/g at 20°C to 19.48 mg/g at 40 °C for 20mg/L Cr (VI) ions concentration. The biosorption process followed the pseudo-second order kinetic model and the correlation coefficients from the pseudo-second order model were all higher than 0.997 in all studied temperatures. These results suggest that the biomass of Aspergillus niger is a promising biosorbent for removal of chromium (VI) ions from the wastewater.

  Info
Periodical
Advanced Materials Research (Volumes 236-238)
Edited by
Zhong Cao, Yinghe He, Lixian Sun and Xueqiang Cao
Pages
155-158
DOI
10.4028/www.scientific.net/AMR.236-238.155
Citation
L. F. Zhang, S. J. Dai, Y. Y. Chen, "Biosorption of Cr(VI) from Aqueous Solution by Aspergillus Niger", Advanced Materials Research, Vols. 236-238, pp. 155-158, 2011
Online since
May 2011
Export
Price
$32.00
Share

In order to see related information, you need to Login.

In order to see related information, you need to Login.

Authors: Na Zhang, Xiao Mei Li, Qing Qi Guo
Abstract:Optimal condition, stability and Km of phytase which was from Aspergillus oryzae093 were studied. The optimal temperature and pH for...
1833
Authors: Jun Juan Xiong, Li Jun Ding
Chapter 7: Biochemical Industry
Abstract:The orthogonal experimental design was used to optimise Aspergillus niger enzyme-assisted extraction for flavonoids-enriched extract from...
1436
Authors: Lei Yang, Rui Feng Yang, Jie Lu, Yan Jun Liu
Chapter 8: Waste Disposal and Recycling
Abstract:We treat black liquor using Aspergillus niger to extract lignin and to improve the utilization value of pulping black liquor. Results show...
2192