Activation of peroxymonosulfate by iron-slag-derived iron-carbon filler for degradation of simulated dye wastewater

ZHANG Youzhen; WU Jiayi; ZENG Xiaoxing; WANG Haiyang; ZHOU Ying; WAN Haojun; FENG Fei

doi:10.13205/j.hjgc.202609006

Volume 44 Issue 9

Sep. 2026

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Article Navigation > ENVIRONMENTAL ENGINEERING > 2026 > 44(9): 48-58

ZHANG Youzhen, WU Jiayi, ZENG Xiaoxing, WANG Haiyang, ZHOU Ying, WAN Haojun, FENG Fei. Activation of peroxymonosulfate by iron-slag-derived iron-carbon filler for degradation of simulated dye wastewater[J]. ENVIRONMENTAL ENGINEERING , 2026, 44(9): 48-58. doi: 10.13205/j.hjgc.202609006

Citation:

ZHANG Youzhen, WU Jiayi, ZENG Xiaoxing, WANG Haiyang, ZHOU Ying, WAN Haojun, FENG Fei. Activation of peroxymonosulfate by iron-slag-derived iron-carbon filler for degradation of simulated dye wastewater[J]. ENVIRONMENTAL ENGINEERING , 2026, 44(9): 48-58. doi: 10.13205/j.hjgc.202609006

Citation:

ZHANG Youzhen, WU Jiayi, ZENG Xiaoxing, WANG Haiyang, ZHOU Ying, WAN Haojun, FENG Fei. Activation of peroxymonosulfate by iron-slag-derived iron-carbon filler for degradation of simulated dye wastewater[J]. ENVIRONMENTAL ENGINEERING , 2026, 44(9): 48-58. doi: 10.13205/j.hjgc.202609006

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Activation of peroxymonosulfate by iron-slag-derived iron-carbon filler for degradation of simulated dye wastewater

doi: 10.13205/j.hjgc.202609006

School of Resources and Environment, Nanchang University, Nanchang 330031, China

Received Date: 2025-12-15
Available Online: 2026-11-05

Abstract

Abstract

To realize the high-value utilization of iron-containing industrial wastes and to develop an efficient and stable technology for dye wastewater treatment， iron-containing solid waste from the pharmaceutical industry was used as the primary iron source and composited with activated carbon to prepare a waste iron-slag-derived iron-carbon filler （ICF）. Based on this material， a low-cost heterogeneous peroxymonosulfate （PMS） activation system was constructed. The effects of the Fe/C mass ratio， PMS dosage， initial pH， and aeration rate on dye degradation performance were systematically investigated. Under the optimal conditions ［m（Fe）∶m（C）=1∶1， PMS=3 g/L， pH=3， and aeration rate of 0.5 L/min］， the ICF/PMS system could almost completely degrade 100 mg/L of Orange Ⅱ within 30 min and exhibited good universality toward various dyes with different molecular structures. Mechanistic investigations revealed that， unlike conventional iron-based PMS systems dominated by free-radical pathways， this system primarily follows a non-radical oxidation mechanism centered on Fe-C interfacial Fe—C—PMS* surface complexes and their transformation into high-valent iron species， Fe（Ⅳ）＝O， with singlet oxygen （¹O₂） and superoxide radicals （·O₂^-） playing synergistic roles. These findings demonstrate that this strategy not only enables the resource utilization of industrial solid wastes， but also provides a promising new technical route for efficient， stable， and economically feasible dye wastewater treatment.
- peroxymonosulfate （PMS）,
- non-radical,
- resource utilization of waste slag,
- advanced oxidation processes

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References(39)

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