Title :
Study of Adsorption Characteristics of Activated Carbon to Chromium from Aquatic Solution
Author :
Chunfang, Tang ; Lindan, Wang ; Qian, Chen ; Zhu, Xiaojuan
Author_Institution :
Central South Univ. of Forestry & Technol., Changsha, China
Abstract :
Cr(VI) has posed great threat on environmental safety and human health, thus the remediation of Cr(VI) pollution is of considerable importance. The adsorption of Cr(VI) from aquatic solution using activated carbon was studied in this paper. The Cr(VI) sorption was relative to pH, contact time, initial content of solution, adsorbent dose and temperature. The maximum removal efficiencies of Cr(VI) were 97.67%. The maximum adsorption capacity was found to be 4.75 mg/kg. Thermodynamic indexes indicate that the adsorption process was endothermic and spontaneous. Freundlich adsorption isotherm model was fitted well the equilibrium data for the adsorption. The Cr(VI)uptake was best described by pseudo second-order rate model.
Keywords :
activated carbon; adsorption; chromium; contamination; thermodynamics; wastewater treatment; Cr; Freundlich adsorption isotherm model; activated carbon; adsorbent dose; adsorption characteristic; adsorption equilibrium data; aquatic solution; chromium removal; contact time; environmental safety; human health; pH; solution content; sorption; temperature; thermodynamic index; Carbon; Carbon dioxide; Data models; Ions; Kinetic theory; Mathematical model; Metals; Activated Carbon; Adsorption Characteristica; Isotherm; Kinetics; Thermodynamics;
Conference_Titel :
Computer Distributed Control and Intelligent Environmental Monitoring (CDCIEM), 2011 International Conference on
Conference_Location :
Changsha
Print_ISBN :
978-1-61284-278-3
Electronic_ISBN :
978-0-7695-4350-5
DOI :
10.1109/CDCIEM.2011.343
