Volume 18 Issue 3
Jun.  2005
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QI YANG, JIAN-LONG WANG, ZHI Xing. Biosorption of Cadmium by Fungal Biomass of Aspergillus niger[J]. Biomedical and Environmental Sciences, 2005, 18(3): 141-145.
Citation: QI YANG, JIAN-LONG WANG, ZHI Xing. Biosorption of Cadmium by Fungal Biomass of Aspergillus niger[J]. Biomedical and Environmental Sciences, 2005, 18(3): 141-145.

Biosorption of Cadmium by Fungal Biomass of Aspergillus niger

Funds:  国家自然科学基金(Grant 50278045)%清华大学校科研和教改项目(Grant JC2002054)
  • Objective To investigate the removal of cadmium from aqueous solution by waste fungal biomass of Aspergillus niger, originated from citric acid fermentation industry. Methods Batch adsorption test was used to study the biosorption equilibrium and isotherm. The Cd2+ concentration was measured with atomic adsorption spectrophotometer (AAS) HITACHI 180-80. Results The biosorption achieved equilibrium within 30 min. The adsorption isotherm could be described by Freundlich adsorption model, and the constants KF and 1/n were determined to be 2.07 and 0.18, respectively, and the correlation efficiency was 0.97. The optimal pH for Cd adsorption was 6.0. The cadmium-laden biomass could be effectively regenerated using 0.1 N HCl. Conclusion The waste biomass of Aspergillus niger, a by-product of fermentation industry, is a potential biosorbent for the removal of cadmium from aqueous solution.
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通讯作者: 陈斌, bchen63@163.com
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    沈阳化工大学材料科学与工程学院 沈阳 110142

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Biosorption of Cadmium by Fungal Biomass of Aspergillus niger

Funds:  国家自然科学基金(Grant 50278045)%清华大学校科研和教改项目(Grant JC2002054)

Abstract: Objective To investigate the removal of cadmium from aqueous solution by waste fungal biomass of Aspergillus niger, originated from citric acid fermentation industry. Methods Batch adsorption test was used to study the biosorption equilibrium and isotherm. The Cd2+ concentration was measured with atomic adsorption spectrophotometer (AAS) HITACHI 180-80. Results The biosorption achieved equilibrium within 30 min. The adsorption isotherm could be described by Freundlich adsorption model, and the constants KF and 1/n were determined to be 2.07 and 0.18, respectively, and the correlation efficiency was 0.97. The optimal pH for Cd adsorption was 6.0. The cadmium-laden biomass could be effectively regenerated using 0.1 N HCl. Conclusion The waste biomass of Aspergillus niger, a by-product of fermentation industry, is a potential biosorbent for the removal of cadmium from aqueous solution.

QI YANG, JIAN-LONG WANG, ZHI Xing. Biosorption of Cadmium by Fungal Biomass of Aspergillus niger[J]. Biomedical and Environmental Sciences, 2005, 18(3): 141-145.
Citation: QI YANG, JIAN-LONG WANG, ZHI Xing. Biosorption of Cadmium by Fungal Biomass of Aspergillus niger[J]. Biomedical and Environmental Sciences, 2005, 18(3): 141-145.

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