Biosorption of nickel(II) from aqueous solution by Aspergillus niger: Response surface methodology and isotherm study

被引:127
作者
Amini, Malihe [1 ]
Younesi, Habibollah [1 ]
Bahramifar, Nader [1 ]
机构
[1] Tarbiat Modares Univ, Fac Nat Resources & Marine Sci, Dept Environm Sci, Noor, Iran
关键词
Biosorption; Ni(II) removal; RSM; A; niger; Langmuir and Freundlich isotherms; HEAVY-METAL BIOSORPTION; STREPTOMYCES-RIMOSUS BIOMASS; SACCHAROMYCES-CEREVISIAE; FUNGAL BIOMASS; WASTE BIOMASS; PSEUDOMONAS-AERUGINOSA; CADMIUM BIOSORPTION; BAKERS-YEAST; REMOVAL; OPTIMIZATION;
D O I
10.1016/j.chemosphere.2009.02.025
中图分类号
X [环境科学、安全科学];
学科分类号
08 ; 0830 ;
摘要
In the present study, the effects of biosorbent Aspergillus niger dosage, initial solution pH and initial Ni(II) concentration on the uptake of Ni(II) by NaOH pretreated biomass of A. niger from aqueous solution were investigated. Batch experiments were carried out in order to model and optimize the biosorption process. The influence of three parameters on the uptake of Ni(II) was described using a response surface methodology (RSM) as well as Langmuir and Freundlich isotherm models. Optimum Ni(II) uptake of 4.82 mg Ni(II) g(-1) biomass (70.30%) was achieved at pH 6.25, biomass dosage of 2.98 g L-1 and initial Ni(II) concentration of 30.00 mg L-1 Ni(II). Langmuir and Freundlich were able to describe the biosorption isotherm fairly well. However, prediction of Ni(II) biosorption using Langmuir and Freundlich isotherms was relatively poor in comparison with RSM approaches. The biosorption mechanism was also investigated by using Fourier transfer infrared (FT-IR) analysis of untreated, NaOH pretreated, and Ni(II) loaded A. niger biomass. (C) 2009 Elsevier Ltd. All rights reserved.
引用
收藏
页码:1483 / 1491
页数:9
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