Cr(Ⅲ) removal from simulated solution using hydrous magnesium oxide coated fly ash: Optimization by response surface methodology (RSM)

Min Xia; Chunsong Ye; Kewu Pi; Defu Liu; Andrea R. Gerson

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Cr(Ⅲ) removal from simulated solution using hydrous magnesium oxide coated fly ash: Optimization by response surface methodology (RSM)

Energy, Resources and Environmental Technology | Updated：2026-01-06

- Cr(Ⅲ) removal from simulated solution using hydrous magnesium oxide coated fly ash: Optimization by response surface methodology (RSM)
- Cr(Ⅲ) removal from simulated solution using hydrous magnesium oxide coated fly ash: Optimization by response surface methodology (RSM)
- 中国化学工程学报（英文版） 2018年26卷第5期页码：1192-1199
- Affiliations：
  
  1. 2 School of Resource and Environmental Engineering, Hubei University of Technology,Hubei,Wuhan,China,430068
  2. 3 Blue Minerals Consultancy, Wattle Grove,Tasmania,Australia,7109
- Author bio：
- Funds：
- DOI：
  中图分类号：
- 纸质出版：2018
- Accepted：
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Min Xia, Chunsong Ye, Kewu Pi, 等. Cr(Ⅲ) removal from simulated solution using hydrous magnesium oxide coated fly ash: Optimization by response surface methodology (RSM)[J]. 中国化学工程学报（英文版）, 2018,26(5):1192-1199.

Min Xia, Chunsong Ye, Kewu Pi, Defu Liu, Andrea R. Gerson. Cr(Ⅲ) removal from simulated solution using hydrous magnesium oxide coated fly ash: Optimization by response surface methodology (RSM)[J]. Chin.J.Chem.Eng., 2018, 26(5): 1192-1199.
Min Xia, Chunsong Ye, Kewu Pi, 等. Cr(Ⅲ) removal from simulated solution using hydrous magnesium oxide coated fly ash: Optimization by response surface methodology (RSM)[J]. 中国化学工程学报（英文版）, 2018,26(5):1192-1199. DOI：

Min Xia, Chunsong Ye, Kewu Pi, Defu Liu, Andrea R. Gerson. Cr(Ⅲ) removal from simulated solution using hydrous magnesium oxide coated fly ash: Optimization by response surface methodology (RSM)[J]. Chin.J.Chem.Eng., 2018, 26(5): 1192-1199. DOI：

摘要

Abstract

Hydrous magnesium oxide coated fly ash (MFA) has environmental remediation potential by providing a substrate for the adsorption of aqueous Cr(Ⅲ). Aqueous Cr(Ⅲ) adsorption onto MFA was examined as a function of MFA dosage

pH and initial Cr(Ⅲ) concentration with the Box-Behnken approach used for experimental design and optimization using response surface methodology (RSM). pH and dosage (dosage and concentration) have significant interactive effects on Cr(Ⅲ) adsorption efficiency. Analysis of variance shows that the response surface quadratic model is highly significant and can effectively predict the experimental outcomes. Cr(Ⅲ) removal efficiency of 98% was obtained using optimized conditions of MFA dosage

pH and initial Cr(Ⅲ) concentration of 1.57 g·L

-1

4.11 and 126 mg·L

-1

respectively. Cr(Ⅲ) adsorption onto MFA is mainly attributed to the interaction between Cr(Ⅲ) and the functional group —OH of the hydrous magnesium oxide

in all probability caused by chemisorptions. The results of this study can conduce to reveal the interactions between Cr(Ⅲ) pollutant and MFA characteristics

posing important implic

ations for the cost-effective alternative adsorption technology in the treatment of heavy metal containing wastewater.

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