磁化FeS改性自来水厂铁盐污泥对水中六价铬的吸附-还原去除研究

doi:10.11896/cldb.25060164

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Abstract To remove Cr(Ⅵ) from water and simultaneously valorize iron-based waterworks sludge (IBWS), FeS precipitation followed by anaerobic calcination at 450 ℃ under N₂ was employed to convert IBWS into a novel M/FeS@IBWS composite. The material was systematically cha-racterized using SEM, SEM-EDS, BET, XRD, FTIR, and XPS. Batch adsorption experiments revealed that Cr(Ⅵ) removal by M/FeS@IBWS was highly pH-dependent, with uptake capacity decreasing from 33.45 mg/g at pH 2 to 6.9 mg/g at pH 9. The adsorption kinetics and isotherms were well described by the pseudo-second-order model and Langmuir equation, respectively, yielding a maximum monolayer capacity of 21.41 mg/g. Thermodynamic analysis indicated that the process was spontaneous and endothermic. Coexisting anions inhibited Cr(Ⅵ) removal in the order PO₄^3- ＞ SO₄^2- ＞ Cl^-, with higher concentrations exacerbating the suppression. M/FeS@IBWS exhibited excellent reusability. Mechanistic investigations demonstrated that Cr(Ⅵ) sequestration occurred via electrostatic attraction, chemical adsorption, and reductive transformation to Cr(Ⅲ) by Fe²⁺ and S^2-.

Key words： hexavalent chromium FeS iron-based waterworks sludge adsorption reduction

Published: 10 August 2026 Online: 2026-08-31

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X705

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https://www.mater-rep.com/EN/10.11896/cldb.25060164 OR https://www.mater-rep.com/EN/Y2026/V40/I15/25060164

1 Xiao W, Ye X, Zhu Z, et al. Ecotoxicology and Environmental Safety, 2021, 208, 111506.
2 Li H, Yu L, Chen Z, et al. Green Chemistry Letters and Reviews, 2024, 17(1), 232967.
3 Radhakrishnan R, Kodavarakkaran A, Kuriakose M, et al. The Arabian Journal for Science and Engineering, 2024, 50, 64499.
4 Wang Z, Zhang A, Zhu M, et al. Separation and Purification Technology, 2025, 354, 129122.
5 Gu J, Dong Y. Journal of Natural Fibers, 2024, 21(1), 2335322.
6 Yang Q, Zhong Y, Zhang Z, et al. Separation and Purification Technology, 2025, 129002, 1382.
7 Ramli N, Kurniawan S, Ighalo J, et al. Biometals, 2023, 36, 1189.
8 Owlad M, Aroua M, Daud W, et al. Water Air Soil Pollution, 2009, 200, 59.
9 Zhang Q, Ye X, Chen D, et al. Journal of Water Process Engineering, 2022, 102720, 2214.
10 Foroughi M, Chavoshi S, Bagheri M, et al. Journal of Material Cycles and Waste Managementg, 2018, 20, 1999.
11 Ren B, Zhao Y, Ji B, et al. Water, 2020, 12(5), 1400.
12 Wang C, Liu X, Wang M, et al. Journal of Cleaner Production, 2019, 226, 96.
13 Ackah L, Guru R, Peiravi M, et al. Sustainability, 2018, 5, 1374.
14 Ahmad T, Ahmad K, Alam M. Environmental Sciences, 2016, 3, 950.
15 Babatunde A, Zhao Y. Critical Reviews in Environmental Science and Technology, 2006, 37(2), 129.
16 Zeng H, Zhao W, Sun S, et al. The Science of the Total Environment, 2024, 906, 167575.
17 Gadekar M, Ahammed M. Applied Water Science, 2020, 10, 160.
18 Yang X Y, Niu H Y, Shi Y L, et al. Environmental Chemistry, 2025, 44(7), 2399(in Chinese).
杨昕怡, 牛红云, 史亚利, 等. 环境化学, 2025, 44(7), 2399.
19 Wang B X, Zhang H N, Wang Z F, et al. New Chemical Materials, 2024, 52(12), 25(in Chinese).
王百祥, 张惠宁, 王泽锋, 等. 化工新型材料, 2024, 52(12), 257.
20 Zheng Z, Duan X, Tie J. Environmental Technology & Innovation, 2022, 28, 102661.
21 Qin L, He L, Yang W, et al. Environmental Science and Pollution Research, 2020, 27, 9214.
22 Li Y, Wang W, Zhou L, et al. Chemosphere, 2017, 169, 131.
23 Kumar A, Kumar V. Chemistry Africa, 2024, 7, 953.
24 Masum S, Sadasivam S, Chen M, et al. Langmuir:the ACS Journal of Surfaces and Colloids, 2023, 39(4), 1548.
25 Duan X H. Preparation and modification of biochar derived from iron-based waterworks sludge and Chinese medicine residual and removal mechanism of Cr(Ⅵ). Ph.D.Thesis, North China University of Water Resources and Electric Power, China, 2023(in Chinese).
段晓涵. 自来水厂铁盐污泥-中药渣生物炭的制备改性及其Cr(Ⅵ)去除机制研究. 博士学位论文, 华北水利水电大学, 2023.
26 Li H, Shen M M, Lou R, et al. China Environmental Science, 2024, 44(11), 6201(in Chinese).
李含, 申萌萌, 楼冉, 等. 中国环境科学, 2024, 44(11), 6201.
27 Gao J Y, Cui J L, Yang D. China Environmental Science, 2024, 44(10), 5584(in Chinese).
高敬毅, 崔佳丽, 杨栋. 中国环境科学, 2024, 44(10), 5584.
28 Chen A X, Pu M X R, Lyu L X, et al. China Environmental Science, 2024, 44(12), 6753(in Chinese).
陈爱侠, 蒲马雪儿, 吕露雪, 等. 中国环境科学, 2024, 44(12), 6753.
29 Ren J, Li N, Zhao L. Chemical and Biochemical Engineering Quarterly, 2012, 26, 111.
30 Roth R, Birnhack L, Avidar M, et al. npj Clean Water, 2024, 7(1), 1.
31 Zhang H, Zhu M, Fu H, et al. Journal of Engineering Research and Reports, 2024, 26(7), 444.
32 Wang Z, Zhang G, Yao Y, et al. Acta Metallurgica Sinica-English Letters, 2023, 36, 366.
33 Yin Z, Zhong Y, Lu J, et al. SSRN Electronic Journal, 2023, 459, 141614.
34 Zhang J, Xing Z, Liu J, et al. Inorganic Chemistry Communications, 2024, 112305, 1387.
35 Ye J, Wang Y, Xu Q, et al. Scientific Report, 2021, 11, 10848.
36 Kang L, Yang H, Wu J, et al. Journal of Hazardous Materials, 2020, 398, 122834.
37 Yang H, Kim N, Park D. Separations, 2023, 10, 430.