期刊
ADSORPTION SCIENCE & TECHNOLOGY
卷 35, 期 1-2, 页码 241-260出版社
SAGE PUBLICATIONS INC
DOI: 10.1177/0263617416674474
关键词
Lead removal; central composite design; nanocomposite; optimization; adsorption
资金
- Isfahan University of Technology (IUT)
The present study focuses on the response surface methodology (RSM) for the optimization of lead removal from an aqueous solution by a novel superparamagnetic nanocomposite. A rotatable central composite design and the response surface methodology were used to conduct and to analyze the experiments, respectively. The adsorption process was investigated as a function of the four factors consisting of pH (4.0-6.0), temperature (20 degrees C-60 degrees C), initial lead concentration (10-90 mg/L) and adsorbent dosage (0.2-1.0 g/L). The maximum lead adsorption capacity was obtained to be 124.955 mg/g under the optimal conditions of 5.49, 60 degrees C, 89.08 mg/L, and 0.48 g/L for the solution pH, temperature, initial lead ion concentration, and the adsorbent dosage, respectively. The desirability function was used to find an optimum point where the desired conditions could be obtained. The superparamagnetic nanocomposite could be used as an adsorbent for the removal of toxic heavy metals from water and wastewater.
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