TY - JOUR
T1 - Adsorption of chromium from aqueous solution by activated alumina and activated charcoal
AU - Mor, S.
AU - Ravindra, K.
AU - Bishnoi, N.R.
N1 - Original article can be found at: http://www.sciencedirect.com/science/journal/09608524 Copyright Elsevier Ltd. DOI : 10.1016/j.biortech.2006.03.018
PY - 2007
Y1 - 2007
N2 - Cr (VI) is considered to be potentially carcinogenic to humans. Removal of Cr (VI) ions from aqueous solution under different conditions was investigated using activated alumina (AA) and activated charcoal (AC) as adsorbents. Batch mode experiments were conducted to study the effects of adsorbent dose, contact time, pH, temperature and initial concentration of Cr (VI). Results showed that the adsorption of Cr (VI) depended significantly on pH and temperature. Equilibrium studies showed that Cr (VI) had a high affinity for AA at pH 4 and AC at pH 2. For AA, maximum adsorption was found at 25°C, indicating exothermic adsorption, while for AC, maximum adsorption was at 40°C. Freundlich and Langmuir adsorption isotherms were also applied and they showed good fits to the experimental data. The results suggest that both AA and AC could be used as effective adsorbents for the removal of Cr (VI) ions.
AB - Cr (VI) is considered to be potentially carcinogenic to humans. Removal of Cr (VI) ions from aqueous solution under different conditions was investigated using activated alumina (AA) and activated charcoal (AC) as adsorbents. Batch mode experiments were conducted to study the effects of adsorbent dose, contact time, pH, temperature and initial concentration of Cr (VI). Results showed that the adsorption of Cr (VI) depended significantly on pH and temperature. Equilibrium studies showed that Cr (VI) had a high affinity for AA at pH 4 and AC at pH 2. For AA, maximum adsorption was found at 25°C, indicating exothermic adsorption, while for AC, maximum adsorption was at 40°C. Freundlich and Langmuir adsorption isotherms were also applied and they showed good fits to the experimental data. The results suggest that both AA and AC could be used as effective adsorbents for the removal of Cr (VI) ions.
U2 - 10.1016/j.biortech.2006.03.018
DO - 10.1016/j.biortech.2006.03.018
M3 - Article
SN - 0960-8524
VL - 98
SP - 954
EP - 957
JO - Bioresource Technology
JF - Bioresource Technology
IS - 4
ER -