Equilibrium adsorption study of the adsorptive removal of Cd2+ and Cr6+ using activated carbon

被引：28
|
作者：
Wang, Weiliang [1 ,2 ]
Liu, Ying [1 ,2 ]
Liu, Xiaohui [3 ]
Deng, Baojun [4 ]
Lu, Shaoyong [5 ]
Zhang, Yaru [1 ]
Bi, Bin [5 ]
Ren, Zongming [1 ,2 ]
机构：
[1] Shandong Normal Univ, Coll Geog & Environm, Jinan 250358, Shandong, Peoples R China
[2] Shandong Nomial Univ, Inst Environm & Ecol, Jinan 250358, Shandong, Peoples R China
[3] Tsinghua Univ, Sch Environm, Beijing 100084, Peoples R China
[4] Jinan Environm Monitoring Ctr, Jinan 250014, Shandong, Peoples R China
[5] Chinese Res Inst Environm Sci, Beijing 100012, Peoples R China
来源：
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH | 2018年 / 25卷 / 25期
基金：
中国国家自然科学基金;
关键词：
Activated carbon; Cr6+; Cd2+; Adsorption-desorption; Speciation; Mechanism; HEAVY-METAL POLLUTION; ZERO-VALENT IRON; AQUEOUS-SOLUTIONS; GRAPHENE OXIDE; SEWAGE-SLUDGE; SPECIATION TRANSFORMATION; CHEMICAL SPECIATION; CR(VI); WATER; IONS;
D O I：
10.1007/s11356-018-2635-5
中图分类号：
X [环境科学、安全科学];
学科分类号：
08 ; 0830 ;
摘要：
The performance of activated carbon (AC) with respect to characterization, adsorption kinetics, thermodynamics, and isotherms was addressed in this study. The effects of initial concentration, pH, contact time, ion strength, and temperature on removal efficiency were also studied. The adsorption isotherms of Cd2+ and Cr6+ on activated carbon can fit the Langmuir model well, and correlation coefficients were above 0.99, all higher than the Freundlich and Temkin models. The maximum adsorption quantities of Cd2+ and Cr6+ were 19.380 and 19.305 mg g(-1) at 25 degrees C, respectively. The adsorption capacities of Cd2+ and Cr6+ are clearly pH dependent. The kinetics of the removal of Cd2+ and Cr6+ was in agreement with a pseudo-second-order model, and the adsorption efficiency of Cd2+ is higher than that of Cr6+. The thermodynamic results showed that increased temperature is favorable to adsorption. The speciation on activated carbon was mainly residual Cd2+ and Cr6+, and the potential ecological risk of Cd2+ is higher than that of Cr6+. The adsorptions of Cd2+ and Cr6+ on activated carbon were dominated by chelation and ion exchange, respectively.
引用
收藏
页码：25538 / 25550
页数：13
相关论文
共 50 条
  • [1] Equilibrium adsorption study of the adsorptive removal of Cd2+ and Cr6+ using activated carbon
    Weiliang Wang
    Ying Liu
    Xiaohui Liu
    Baojun Deng
    Shaoyong Lu
    Yaru Zhang
    Bin Bi
    Zongming Ren
    Environmental Science and Pollution Research, 2018, 25 : 25538 - 25550
  • [2] Adsorptive removal of Cd2+, Cr3+ and Cr6+ using natural and synthetic goethite particles: Kinetics study
    Ugbe, F. A.
    Ikudayisi-Ugbe, V. A.
    Yakubu, M. O.
    JOURNAL OF NEW TECHNOLOGY AND MATERIALS, 2020, 10 (02) : 29 - 37
  • [3] Competitive Adsorption of Quaternary Metal Ions, Ni2+, Mn2+, Cr6+, and Cd2+, on Acid-Treated Activated Carbon
    Abu-Daabes, Malyuba A.
    Abu Zeitoun, Edrees
    Mazi, Wafa
    WATER, 2023, 15 (06)
  • [4] Geopolymers for immobilization of Cr6+, Cd2+, and Pb2+
    Zhang, Jianguo
    Provis, John L.
    Feng, Dingwu
    van Deventer, Jannie S. J.
    JOURNAL OF HAZARDOUS MATERIALS, 2008, 157 (2-3) : 587 - 598
  • [5] Enhanced Adsorptive Bioremediation of Heavy Metals (Cd2+, Cr6+, Pb2+) by Methane-Oxidizing Epipelon
    Faheem, Muhammad
    Shabbir, Sadaf
    Zhao, Jun
    Kerr, Philip G.
    Sultana, Nasrin
    Jia, Zhongjun
    MICROORGANISMS, 2020, 8 (04)
  • [6] Adsorptive removal of Cd2+, Pb2+, and Fe2+ from acid mine drainage using a mixture of waste orange and lemon activated carbon (WOLAC): equilibrium study
    Denga Ramutshatsha-Makhwedzha
    Tresor Mbaya
    Avhafunani Mavhungu
    Mapula Lucey Mavhunga
    Richard Mbaya
    Journal of the Iranian Chemical Society, 2023, 20 : 1119 - 1133
  • [7] Adsorptive removal of Cd2+, Pb2+, and Fe2+ from acid mine drainage using a mixture of waste orange and lemon activated carbon (WOLAC): equilibrium study
    Ramutshatsha-Makhwedzha, Denga
    Mbaya, Tresor
    Mavhungu, Avhafunani
    Mavhunga, Mapula Lucey
    Mbaya, Richard
    JOURNAL OF THE IRANIAN CHEMICAL SOCIETY, 2023, 20 (05) : 1119 - 1133
  • [8] Equilibrium and kinetic adsorption study of the adsorptive removal of Cr(VI) using modified wheat residue
    Chen, Suhong
    Yue, Qinyan
    Gao, Baoyu
    Xu, Xing
    JOURNAL OF COLLOID AND INTERFACE SCIENCE, 2010, 349 (01) : 256 - 264
  • [9] Immobilization of Cr6+, Cd2+, Zn2+ and Pb2+ in alkali-activated slag binders
    Deja, J
    CEMENT AND CONCRETE RESEARCH, 2002, 32 (12) : 1971 - 1979
  • [10] Potential use of ZnO@activated carbon nanocomposites for the adsorptive removal of Cd2+ ions in aqueous solutions
    Alhan, Sarita
    Nehra, Monika
    Dilbaghi, Neeraj
    Singhal, Nitin Kumar
    Kim, Ki-Hyun
    Kumar, Sandeep
    ENVIRONMENTAL RESEARCH, 2019, 173 : 411 - 418
12345