Journal of Scientific and Industrial Research

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Isotherm and Thermodynamic Studies of the Biosorption of Humic Acid from Aqueous Solution by Pine Sawdust based Activated Charcoal


Affiliations
1 Department of Biochemistry, College of Science, King Saud University, PO Box, 2455, Riyadh, 11451, Saudi Arabia
2 Nuclear Research Center; Atomic Energy Authority, P.O. 13759, Inshas, Cairo, Egypt
3 Hot Laboratories and Waste Management Center, Atomic Energy Authority, P.O. 13759, Inshas, Cairo, Egypt

Activated charcoal was prepared from pine tree sawdust by chemical activation by means of phosphoric acid (PSDP) that was used for Humic acid bio sorption from aqueous medium. The influence of humic acid initial concentration, sorbent mass, and solution temperature on sorption process was investigated. Langmuir and Freundlich isotherm models were used to analyze the equilibrium sorption data. The maximum adsorption capacities of PSDP obtained from Langmuir were 170.9, 182.1 and 209.6 mg/g at 25°C, 45°C and 65°C, respectively. Humic acid adsorption onto PSDP was spontaneous, favorable at higher temperature and endothermic in nature. Activated charcoal from pine tree sawdust proves to have high capacity adsorptive to natural organic compound (humic acid).
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  • Isotherm and Thermodynamic Studies of the Biosorption of Humic Acid from Aqueous Solution by Pine Sawdust based Activated Charcoal

Abstract Views: 81  | 

Authors

Sobhy M Ibrahim
Department of Biochemistry, College of Science, King Saud University, PO Box, 2455, Riyadh, 11451, Saudi Arabia
Mohamed R Hassan
Nuclear Research Center; Atomic Energy Authority, P.O. 13759, Inshas, Cairo, Egypt
H M H Gad
Hot Laboratories and Waste Management Center, Atomic Energy Authority, P.O. 13759, Inshas, Cairo, Egypt

Abstract


Activated charcoal was prepared from pine tree sawdust by chemical activation by means of phosphoric acid (PSDP) that was used for Humic acid bio sorption from aqueous medium. The influence of humic acid initial concentration, sorbent mass, and solution temperature on sorption process was investigated. Langmuir and Freundlich isotherm models were used to analyze the equilibrium sorption data. The maximum adsorption capacities of PSDP obtained from Langmuir were 170.9, 182.1 and 209.6 mg/g at 25°C, 45°C and 65°C, respectively. Humic acid adsorption onto PSDP was spontaneous, favorable at higher temperature and endothermic in nature. Activated charcoal from pine tree sawdust proves to have high capacity adsorptive to natural organic compound (humic acid).