Removal of Cr(VI) from wastewater by M-HAFAC based on modified fly ash

被引：3
|
作者：
Wang, Lemeng [1 ]
Wang, Xu [1 ]
Wang, Wen [1 ]
Zeng, Fang [1 ]
Qi, Liqiang [1 ]
机构：
[1] North China Elect Power Univ, Dept Environm Sci & Engn, Hebei Key Lab Power Plant Flue Gas Multipollutant, HUADIAN RD 689, Baoding 071003, Hebei, Peoples R China
来源：
SEPARATION SCIENCE AND TECHNOLOGY | 2023年 / 58卷 / 03期
关键词：
Modified fly ash; Fe3O4; Magnetic coagulation; Cr6+; electrostatic charge neutralization; ADSORPTION; CHROMIUM;
D O I：
10.1080/01496395.2022.2138435
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
Magnetic coagulants (M-HAFAC), using fly ash modified by hydrochloric acid, sulfuric acid, sodium hydroxide and ferric chloride as raw materials and nano Fe3O4 as magnetic seed, were prepared as an adsorbent for Cr(VI) in wastewater. Experiments and characterization analysis were performed on the prepared magnetic coagulant. The coagulation experimental results showed that the coagulant prepared on the basis of hydrochloric acid modified-fly ash (HAFAC) had the best adsorption properties, and the removal rate of Cr6+ could reach 97.53%. Zeta potential, BET, SEM, XRD, XPS characterization results showed that the mechanism of Cr(VI) removal by the modified fly ash-based magnetic coagulant was the synergistic effect of electro-neutralization and chemical precipitation. Kinetic and thermodynamic analyses showed that the adsorption behavior of Cr6+ adsorption by magnetic coagulants is dominated by monolayer adsorption and chemisorption, and the adsorption process heat absorption can proceed spontaneously.
引用
收藏
页码：562 / 572
页数：11
相关论文
共 50 条
  • [41] Removal of fluoride from aqueous solution by modified fly ash
    Li Luo
    Liang Lu
    Guoqiang Wu
    Jianjun Chen
    Chinese Journal of Geochemistry, 2006, 25 (Suppl 1): : 129 - 129
  • [42] Hydrothermally modified fly ash for heavy metals and dyes removal in advanced wastewater treatment
    Visa, Maria
    Chelaru, Andreea-Maria
    APPLIED SURFACE SCIENCE, 2014, 303 : 14 - 22
  • [43] Arsenate removal from synthetic wastewater by adsorption onto fly ash
    Balsamo, M.
    Di Natale, F.
    Erto, A.
    Lancia, A.
    Montagnaro, F.
    Santoro, L.
    DESALINATION, 2010, 263 (1-3) : 58 - 63
  • [44] Removal of chromium(VI) from electroplating industry wastewater using bagasse fly ash - A sugar industry waste material
    Gupta V.K.
    Mohan D.
    Sharma S.
    Park K.T.
    Environmentalist, 1998, 19 (2): : 129 - 136
  • [45] Removal of Heavy Metal from Wastewater Using Zeolite from Fly Ash
    Wu, Changnian
    Tang, Yuchao
    Tang, Lihua
    ADVANCES IN ENVIRONMENTAL SCIENCE AND ENGINEERING, PTS 1-6, 2012, 518-523 : 2736 - 2739
  • [46] Removal of Methylene Blue from Wastewater Using Zeolite from Fly Ash
    Wu, Changnian
    Ling, Qi
    Wang, Li
    Li, Weihua
    Tang, Yuchao
    Tao, Yong
    Pan, Fakang
    Li, Yang
    PROGRESS IN ENVIRONMENTAL SCIENCE AND ENGINEERING, PTS 1-4, 2013, 610-613 : 1286 - 1289
  • [47] Removal of Cr(VI) by modified brown algae Sargassum bevanom from aqueous solution and industrial wastewater
    Javadian, Hamedreza
    Ahmadi, Maral
    Ghiasvand, Mohamad
    Kahrizi, Sajad
    Katal, Reza
    JOURNAL OF THE TAIWAN INSTITUTE OF CHEMICAL ENGINEERS, 2013, 44 (06) : 977 - 989
  • [48] Effect of pH on the removal of Cr(III) and Cr(VI) from aqueous solution by modified polyethyleneimine
    Wang, Gang
    Chang, Qing
    Zhang, Mingyue
    Han, Xiaoting
    REACTIVE & FUNCTIONAL POLYMERS, 2013, 73 (11): : 1439 - 1446
  • [49] Removal of Cu(II) and Cr(VI) from wastewater by an amphoteric sorbent based on cellulose-rich biomass
    Zhong, Qian-Qian
    Yue, Qin-Yan
    Li, Qian
    Gao, Bao-Yu
    Xu, Xing
    CARBOHYDRATE POLYMERS, 2014, 111 : 788 - 796
  • [50] Efficient Removal of Cr(VI) from Wastewater by Magnetic Biochar Derived from Peanut Hull
    Yuze Liu
    Yinxiu Liang
    Wenjie Cui
    Hongyan Zhai
    Min Ji
    Water, Air, & Soil Pollution, 2024, 235
12345