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Removal of cadmium (II) from aqueous solution: A comparative study of raw attapulgite clay and a reusable waste-struvite/attapulgite obtained from nutrient-rich wastewater.
J Hazard Mater. 2017 May 05; 329:66-76.JH

Abstract

In this study, raw attapulgite (APT) and a novel adsorbent, struvite/attapulgite (MAP/APT) obtained from nutrient-rich wastewater treated by MgO modified APT, were applied as the absorbent for Cd(II) ion removal from aqueous solution. The two adsorbents were characterized by BET, SEM-EDS, XRD, FT-IR. Raw APT and MAP/APT separately presented the maximum Cd(II) adsorption capacities of 10.38mg/g and 121.14mg/g at pH of 5.45. The Cd(II) adsorption on raw APT and MAP/APT could be well fitted by Freundlich isotherm and Langmuir isotherm, respectively. Pseudo-second order equation was able to properly describe the kinetics of Cd(II) adsorption by raw APT and MAP/APT. The calculated thermodynamic parameters indicated that Cd(II) adsorption onto raw APT and MAP/APT were spontaneous and endothermic. An economic evaluation revealed that the treatment costs of the adsorption process by raw APT and MPA/APT were 0.013 $ per 1000mg Cd and 0.004 $ per 1000mg Cd, respectively.

Authors+Show Affiliations

State Key Laboratory of Pollution Control and Resource Reuse, College of Environmental Science and Engineering, Tongji University, Shanghai 200092, PR China.State Key Laboratory of Pollution Control and Resource Reuse, College of Environmental Science and Engineering, Tongji University, Shanghai 200092, PR China. Electronic address: wangxj@tongji.edu.cn.School of Civil and Environmental Engineering, University of New South Wales, Sydney, NSW 2052, Australia. Electronic address: jinxing.ma@unsw.edu.au.State Key Laboratory of Pollution Control and Resource Reuse, College of Environmental Science and Engineering, Tongji University, Shanghai 200092, PR China.State Key Laboratory of Pollution Control and Resource Reuse, College of Environmental Science and Engineering, Tongji University, Shanghai 200092, PR China.

Pub Type(s)

Journal Article

Language

eng

PubMed ID

28135656

Citation

Wang, Hao, et al. "Removal of Cadmium (II) From Aqueous Solution: a Comparative Study of Raw Attapulgite Clay and a Reusable Waste-struvite/attapulgite Obtained From Nutrient-rich Wastewater." Journal of Hazardous Materials, vol. 329, 2017, pp. 66-76.
Wang H, Wang X, Ma J, et al. Removal of cadmium (II) from aqueous solution: A comparative study of raw attapulgite clay and a reusable waste-struvite/attapulgite obtained from nutrient-rich wastewater. J Hazard Mater. 2017;329:66-76.
Wang, H., Wang, X., Ma, J., Xia, P., & Zhao, J. (2017). Removal of cadmium (II) from aqueous solution: A comparative study of raw attapulgite clay and a reusable waste-struvite/attapulgite obtained from nutrient-rich wastewater. Journal of Hazardous Materials, 329, 66-76. https://doi.org/10.1016/j.jhazmat.2017.01.025
Wang H, et al. Removal of Cadmium (II) From Aqueous Solution: a Comparative Study of Raw Attapulgite Clay and a Reusable Waste-struvite/attapulgite Obtained From Nutrient-rich Wastewater. J Hazard Mater. 2017 May 5;329:66-76. PubMed PMID: 28135656.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Removal of cadmium (II) from aqueous solution: A comparative study of raw attapulgite clay and a reusable waste-struvite/attapulgite obtained from nutrient-rich wastewater. AU - Wang,Hao, AU - Wang,Xuejiang, AU - Ma,Jinxing, AU - Xia,Peng, AU - Zhao,Jianfu, Y1 - 2017/01/16/ PY - 2016/09/08/received PY - 2016/12/21/revised PY - 2017/01/14/accepted PY - 2017/1/31/pubmed PY - 2017/1/31/medline PY - 2017/1/31/entrez KW - Adsorption KW - Attapulgite KW - Cadmium KW - Struvite KW - Waste reuse SP - 66 EP - 76 JF - Journal of hazardous materials JO - J. Hazard. Mater. VL - 329 N2 - In this study, raw attapulgite (APT) and a novel adsorbent, struvite/attapulgite (MAP/APT) obtained from nutrient-rich wastewater treated by MgO modified APT, were applied as the absorbent for Cd(II) ion removal from aqueous solution. The two adsorbents were characterized by BET, SEM-EDS, XRD, FT-IR. Raw APT and MAP/APT separately presented the maximum Cd(II) adsorption capacities of 10.38mg/g and 121.14mg/g at pH of 5.45. The Cd(II) adsorption on raw APT and MAP/APT could be well fitted by Freundlich isotherm and Langmuir isotherm, respectively. Pseudo-second order equation was able to properly describe the kinetics of Cd(II) adsorption by raw APT and MAP/APT. The calculated thermodynamic parameters indicated that Cd(II) adsorption onto raw APT and MAP/APT were spontaneous and endothermic. An economic evaluation revealed that the treatment costs of the adsorption process by raw APT and MPA/APT were 0.013 $ per 1000mg Cd and 0.004 $ per 1000mg Cd, respectively. SN - 1873-3336 UR - https://www.unboundmedicine.com/medline/citation/28135656/Removal_of_cadmium__II__from_aqueous_solution:_A_comparative_study_of_raw_attapulgite_clay_and_a_reusable_waste_struvite/attapulgite_obtained_from_nutrient_rich_wastewater_ L2 - https://linkinghub.elsevier.com/retrieve/pii/S0304-3894(17)30037-7 DB - PRIME DP - Unbound Medicine ER -
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