caa a22 4500 463194896 CHVBK 20180406164920.0 cr unu---uuuuu 170326e20070901xx s 000 0 eng 10.1007/s10669-007-9048-1 doi (NATIONALLICENCE)springer-10.1007/s10669-007-9048-1 Cobalt and zinc removal from aqueous solution by chemically treated bentonite [Elektronische Daten] [Reyad Shawabkeh, Omar Al-Khashman, Hamzeh Al-Omari, Ali Shawabkeh] Natural bentonite was treated by hydrochloric, nitric, and phosphoric acids followed by washing with sodium hydroxide in order to enhance its adsorption capacity. The sample that treated with hydrochloric acid followed by further treatment with NaOH showed the highest cation exchange capacity with a value of 51.20meq/100g. The zero-point of charge for this sample was found to be 4.50. Adsorption isotherms for both cobalt and zinc were fitted using Langmuir, Freundlich, and Redlich-Peterson and showed an adsorption capacity of 138.1mg Co2+ and 202.6mg Zn2+ per gram of treated sample. Springer Science+Business Media, LLC, 2007 Cobalt nationallicence Zinc nationallicence Heavy metals nationallicence Pollution nationallicence Adsorption nationallicence Bentonite nationallicence Treatment nationallicence Shawabkeh Reyad Department of Chemical Engineering, Mutah University, 61710, Al Karak, Jordan aut Al-Khashman Omar Department of Environmental Engineering, Al-Hussein Bin Talal University, Ma'an, Jordan aut Al-Omari Hamzeh Department of Chemistry, Mutah University, 61710, Al Karak, Jordan aut Shawabkeh Ali Department of Basic Sciences, Al-Balqa Applied University, Amman, Jordan aut The Environmentalist Kluwer Academic Publishers-Plenum Publishers; http://www.springer-ny.com 27/3(2007-09-01), 357-363 0251-1088 27:3<357 2007 27 10669 https://doi.org/10.1007/s10669-007-9048-1 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s10669-007-9048-1 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Shawabkeh Reyad Department of Chemical Engineering, Mutah University, 61710, Al Karak, Jordan aut NATIONALLICENCE 700 1- Al-Khashman Omar Department of Environmental Engineering, Al-Hussein Bin Talal University, Ma'an, Jordan aut NATIONALLICENCE 700 1- Al-Omari Hamzeh Department of Chemistry, Mutah University, 61710, Al Karak, Jordan aut NATIONALLICENCE 700 1- Shawabkeh Ali Department of Basic Sciences, Al-Balqa Applied University, Amman, Jordan aut NATIONALLICENCE 773 0- The Environmentalist Kluwer Academic Publishers-Plenum Publishers; http://www.springer-ny.com 27/3(2007-09-01), 357-363 0251-1088 27:3<357 2007 27 10669 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer