Adsorption Studies on the Removal of Hexavalent Chromium-Contaminated Wastewater using Activated Carbon and Bentonite
TLDR
In this paper, the adsorption potential of activate d carbon and bentonite for removal of Cr(VI) ions f rom wastewater has been investigated, and the effect of initial con centration, adsorbent dose, agitation speed, contact time, temperature an d pH of solution on adsorbption process and the evaluation of optimum conditions.Abstract:
In this study, the adsorption potential of activate d carbon and bentonite for removal of Cr(VI) ions f rom wastewater has been investigated. The study involves batch type ex periments to investigate the effects of initial con centration, adsorbent dose, agitation speed, contact time, temperature an d pH of solution on adsorption process and the eval uation of optimum conditions. The adsorption process has fit pseudo-second order kinetic models. Langmuir and Freundlich adsorption isotherm models were applied to analyze adsorption data, and both were found to be applicable to this adsorption process. Thermodynamic parameters, e.g., ∆G ◦ , ∆S ◦ and ∆H ◦ of the on-going adsorption process have also been calculated and found the sorption process as endothermic. Finally, it can be seen that bentonite was found to be more effective for the removal of Cr(VI) than activated carbon, under the same experi mental conditions.read more
Citations
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Novel synthesis of Ni/Fe layered double hydroxides using urea and glycerol and their enhanced adsorption behavior for Cr(VI) removal
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Hexavalent chromium removal from aqueous solution by adsorbents synthesized from groundwater treatment residuals
Chi-Chuan Kan,Aldwin H. Ibe,Kim Katrina P. Rivera,Renato O. Arazo,Renato O. Arazo,Mark Daniel G. de Luna +5 more
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Kinetic and Thermodynamic Studies of the Adsorption of Cr(VI) onto Some Selected Local Adsorbents
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Magnetic adsorption separation (MAS) process: An alternative method of extracting Cr(VI) from aqueous solution using polypyrrole coated Fe3O4 nanocomposites
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References
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