PURIFICATION OF UNDERGROUND WATER FROM FERROUS AND MANGANOUS IONS USING ACTIVATED CARBON DERIVED FROM RICE HUSK (CASE STUDY) | ||||
The International Conference on Chemical and Environmental Engineering | ||||
Article 16, Volume 3, 3rd International Conference On Chemical & Environmental Engineering, May 2006, Page 58-78 PDF (593.03 K) | ||||
Document Type: Original Article | ||||
DOI: 10.21608/iccee.2006.41068 | ||||
View on SCiNiTO | ||||
Authors | ||||
Diafullah A. A.1; Abdo. M. H.2; Moustafa M. E.3; Amin A. S.3; Mohamed F. M.4 | ||||
1Hot Lab. Center, Atomic Energy Authority. | ||||
2National Institute of Oceanography and Fisheries. | ||||
3Faculty of Science, Banha University. | ||||
4Kaha Company for Chemical Industries, National Authority for Military Production. | ||||
Abstract | ||||
ABSTRACT To address questions of water quality and to suggest a local and available treatment process for iron and manganese removal, ground water samples w ere collected at 4-stations (I, II, III, IV) seasonally during March 2003 - Feb. 2004 and determined using atomic absorption spectrophotometer (AAS). The results showed that the concentrations of these ions are higher than the permissible levels. In this concern, treatment procedure was evaluated using activated carbon prepared by chemical activation of rice husk using 70 % H3PO4 at 500 °C. Factors affecting adsorption process (e.g. contact time and sorbent mass) were examined. The results showed that the percent removal almost reaches ≥ 99 % and in all cases the ion concentration after treatment is less than the permissible level. Adsorption isotherm indicates that the monolayer coverage is 0.357 g and 0.625 g of ferrous and Manganous per gram of sorbent respectively. In dynamic mode, the adsorption capacity (i.e., Ce/Co = 50 % or Q 0.5 ) was 1 mg/g at flow rate 1liter/min. and the column recycled at least five times and only needed 1/ 2 ml of KMnO4 (0.06M) for each regeneration step and no loss in sorbent per cycle should be considered. Therefore, activated carbon derived from rice husk may be considered as a better replacement technology for removal of Fe +2 and due to good efficiency in this application. The possible working adsorption mechanisms are discussed and confirmed by FTIR. | ||||
Keywords | ||||
Purification; modified rice husk; under ground water; Adsorption; ferrous; manganous ions and activated carbon | ||||
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