Coupling adsorption and in-situ Fenton-like oxidation by iron-containing low-grade attapulgite clay towards organic pollutant removal: From batch experiment to continuous operation

Chao Jiang; Xiaoli Liu; Xingpeng Wang; Qihui Wang; Huiyu Li; Weiliang Tian; Saeed Ahmed; Yongjun Feng

doi:10.1016/j.gee.2024.10.004

Green Energy & Environment (May 2025)

Coupling adsorption and in-situ Fenton-like oxidation by iron-containing low-grade attapulgite clay towards organic pollutant removal: From batch experiment to continuous operation

Chao Jiang,
Xiaoli Liu,
Xingpeng Wang,
Qihui Wang,
Huiyu Li,
Weiliang Tian,
Saeed Ahmed,
Yongjun Feng

Affiliations

Chao Jiang: State Key Laboratory of Chemical Resource Engineering, College of Chemistry, Beijing University of Chemical Technology, Beijing, 100029, China
Xiaoli Liu: State Key Laboratory of Chemical Resource Engineering, College of Chemistry, Beijing University of Chemical Technology, Beijing, 100029, China
Xingpeng Wang: State Key Laboratory of Chemical Resource Engineering, College of Chemistry, Beijing University of Chemical Technology, Beijing, 100029, China
Qihui Wang: State Key Laboratory of Chemical Resource Engineering, College of Chemistry, Beijing University of Chemical Technology, Beijing, 100029, China
Huiyu Li: State Key Laboratory of Chemical Resource Engineering, College of Chemistry, Beijing University of Chemical Technology, Beijing, 100029, China; Corresponding authors.
Weiliang Tian: College of Chemistry and Chemical Engineering, Tarim University, Alar, 843300, China; Corresponding authors.
Saeed Ahmed: Department of Chemistry, University of Chakwal, Chakwal, 488000, Pakistan
Yongjun Feng: State Key Laboratory of Chemical Resource Engineering, College of Chemistry, Beijing University of Chemical Technology, Beijing, 100029, China; College of Chemistry and Chemical Engineering, Tarim University, Alar, 843300, China; Gansu West Attapulgite Application Research Institute, Baiyin, Gansu, 730900, China; Corresponding authors.

DOI: https://doi.org/10.1016/j.gee.2024.10.004
Journal volume & issue: Vol. 10, no. 5
pp. 1015 – 1026

Abstract

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Coupling adsorption and in-situ Fenton-like oxidation process was developed for Methylene blue (MB) using refined iron-containing low-grade attapulgite (ATP) clay, and the removal mechanism was investigated. The MB was initially adsorbed on the porous ATPs, and then the enriched MB was removed by the H2O2-assisted Fenton-like oxidation with the iron-containing ATP catalyst. Under optimal conditions, the ATP powder exhibits the maximum removal efficiency of 100% with negligible iron leaching (1.5 mg L−1) and no sludge formation. Furthermore, polysulfone/ATP (PSF/ATP) pellets were fabricated through a water-induced phase separation process to construct a fixed-bed reactor (FBR) for continuous contaminant removal. For the first cycle, the maximum adsorption capacity was 15.5 L with an outlet MB concentration of 1.973 mg L−1 (< 2 mg L−1, GB4287-2012) using the PSF/ATP pellets containing 50.0 g of ATP powders, and the maximum Fenton-like oxidation capacity was 35.5 L with the outlet concentration of 0.831 mg L−1. After five cycles, the total treated volume of the MB solution was ca. 255 L, and the efficiency remained above 99%. After 10 h of continuous treatment towards practical resin industrial wastewater, the chemical oxygen demand (COD) removal efficiency was still measured at 83.05%, costing 0.398 $ m−3. These results demonstrate the practical applicability of iron-containing low-grade ATP clay for textile water treatment.

Published in Green Energy & Environment

ISSN: 2468-0257 (Online)
Publisher: KeAi Communications Co., Ltd.
Country of publisher: China
LCC subjects: Technology: Mechanical engineering and machinery: Renewable energy sources; Science: Biology (General): Ecology
Website: https://www.keaipublishing.com/en/journals/green-energy-and-environment/

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