NDLI: Removal of Hexavalent Chromium by Adsorption on Microwave Assisted Activated Carbon Prepared from Stems of Leucas Aspera

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Removal of Hexavalent Chromium by Adsorption on Microwave Assisted Activated Carbon Prepared from Stems of Leucas Aspera

Content Provider	Scilit
Author	Shanmugalingam, A. Murugesan, A.
Copyright Year	2018
Abstract	This study reports adsorption of Cr(VI) ions from aqueous solution using activated carbon that was prepared from stems of Leucas aspera. Eight hundred and fifty watts power of microwave radiation, 12 min of radiation time, 60% of ZnCl₂ solution and 24 h of impregnation time are the optimal parameters to prepare efficient carbon effective activated carbon. It was designated as MWLAC (Microwave assisted Zinc chloride activated Leucas aspera carbon). Various adsorption characteristics such as dose of the adsorbent, agitation time, initial Cr(VI) ion concentration, pH of the solution and temperature on adsorption were studied for removal of Cr(VI) ions from aqueous solution by batch mode. Also the equilibrium adsorption was analyzed by the Langmuir, Freundlich, Tempkin and D-R isotherm models. The order of best describing isotherms was given based on R² value. The pseudo-second-order kinetic model best fitted with the Cr(VI) adsorption data. Thermodynamic parameters were also determined and results suggest that the adsorption process is a spontaneous, endothermic and proceeded with increased randomness.
Related Links	http://www.degruyter.com/downloadpdf/j/zpch.ahead-of-print/zpch-2017-0998/zpch-2017-0998.xml
Ending Page	506
Page Count	18
Starting Page	489
ISSN	09429352
e-ISSN	21967156
DOI	10.1515/zpch-2017-0998
Journal	Zeitschrift für Physikalische Chemie
Issue Number	4
Volume Number	232
Language	English
Publisher	Walter de Gruyter GmbH
Publisher Date	2018-05-24
Access Restriction	Open
Subject Keyword	Zeitschrift Für Physikalische Chemie Paper and Wood Adsorption Chromium (vi) Isotherms Kinetics Ph Effect Zncl2 Activated Carbon Journal: Zeitschrift für Physikalische Chemie, Issue- 3-4
Content Type	Text
Resource Type	Article
Subject	Physical and Theoretical Chemistry

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