Adsorption characteristics and purification mechanism of solid waste based PRB composite particle fillers on Cd2+

被引：0
|
作者：
Jiang J. [1 ]
Wang S. [1 ,2 ]
Su J. [2 ]
Liao C. [2 ,3 ]
Luo H. [1 ]
Chen J. [1 ]
机构：
[1] School of Civil Engineering and Architecture, Guangxi University, Nanning
[2] Guangxi Bossco Environmental Protection Technology Co., Ltd., Nanning
[3] Technical Innovation Center of Mine Geological Environmental Restoration Engineering in Southern Karst Area, Ministry of Natural Resources, Nanning
来源：
Zhongguo Youse Jinshu Xuebao/Chinese Journal of Nonferrous Metals | 2024年 / 34卷 / 06期
关键词：
adsorption; contaminated groundwater; permeable reactive barrier; steel slag;
D O I：
10.11817/j.ysxb.1004.0609.2023-44401
中图分类号：
学科分类号：
摘要：
Given that traditional permeable reaction barrier (PRB) fillers are expensive and susceptible to corrosion and passivation, this research prepared composite granular fillers (CGF) from steel slag, desulfurization gypsum, and others. The isothermal adsorption and kinetic characteristics of CGF on Cd2+ were investigated, and the immersion experiment revealed the strength loss laws and dissipation features of CGF. The dynamic adsorption laws of CGF were explored by the dynamic adsorption experiment, and the purification mechanism of CGF on Cd2+ was determined. The results show that the adsorption process of Cd2+ by CGF is controlled by chemisorption and intraparticle diffusion, which is consistent with the PS-order model and Langmuir model. The T3 group has the best performance of CGF, with adsorption of 8.12 mg/g, a minimum 28-day dissipation rate of 4.98%, and a strength loss rate of 6.16%. Thomas model can well describe the dynamic adsorption behavior of CGF, the pump speed has the greatest influence on the penetration curve, and the dynamic equilibrium adsorption quantity qe increases with the increase of concentration and bed height. CGF can generate hydration products, such as C-S-H gel and AFt, through hydration reactions and volcanic ash reactions, which can provide particle strength while achieving the adsorption of Cd2+ through coprecipitation and ion exchange. This study can provide a new method for the remediation of nonferrous metal mine-contaminated sites. © 2024 Central South University of Technology. All rights reserved.
引用
收藏
页码：2112 / 2126
页数：14
相关论文
共 33 条
  • [1] ZHANG W J, XIN C L, YU S, Et al., Spatial and temporal distribution and pollution evaluation of soluble heavy metals in Liujiang River Basin, Environmental Science, 42, 9, (2021)
  • [2] LIU F, CHEN L, WANG G C, Et al., Permeable reactive barrier for groundwater pollution remediation: An overview [J], Advances in Earth Science, 30, 8, (2015)
  • [3] ZHOU Y, GIOVANNI C, JUN H., Mechanochemically sulfidated zero-valent iron as persulfate activation catalyst in permeable reactive barriers for groundwater remediation—A feasibility study, Chemosphere, 311, (2023)
  • [4] TEHRANI M R F, SHAMSAI A, VOSSUGHI M, Et al., Insitu Pb<sup>2+</sup> remediation using nano iron particles, Journal of Environmental Health Science and Engineering, 13, 1, (2015)
  • [5] WANG J F, CHEN M, WANG Y R, Et al., Indoor simulation of surface PRB treating tailwater in ionic rare earth mining area[J], Chinese Journal of Environmental Engineering, 16, 5, (2022)
  • [6] LONG Q P, WAN Z Y, XIONG L Z, Et al., Preparation of activated carbon derived from waste areca and its adsorption performance on Mn(Ⅱ), The Chinese Journal of Nonferrous Metals, 29, 12, pp. 2877-2887, (2019)
  • [7] SAKR M, EL AGAMAWI H, KLAMMLER H, Et al., A review on the use of permeable reactive barriers as an effective technique for groundwater remediation, Groundwater for Sustainable Development, 21, (2023)
  • [8] HAO F Y, ZHU X, QI X J, Et al., Steel slag modification and its influence on arsenic removal from waste acid, The Chinese Journal of Nonferrous Metals, 30, 7, pp. 1703-1713, (2020)
  • [9] JIANGMIN S, GUANXING H, DONGYA H, Et al., A review of reactive media within permeable reactive barriers for the removal of heavy metal(loid)s in groundwater: Current status and future prospects, Journal of Cleaner Production, 319, (2021)
  • [10] YANG L W, CHEN J, YUAN P, Et al., Research review of heavy metal ions removal from waste water by steelmaking slag, Iron & Steel, 52, 8, (2017)
1234