Biosorption of Cadmium by Fungal Biomass of
Aspergillus niger
QI YANG;JIAN-LONG WANG;ZHI XING
【期刊名称】《生物医学与环境科学（英文版）》 【年(卷),期】2005(018)003
【摘要】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. 【总页数】5页(141-145) 【
关
键
词
】
Cadmium;Heavy
metal
pollution;Aspergillus
niger;Biomass;Biosorption
Biosorption of Cadmium by Fungal Biomass of Aspergillus niger
