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Unformatted text preview: e binding capacity vary pH value (pH 2 - 6). The adsorption characteristics of metals ions with varying pH using SRC and MSRC were examined, the uptake of various metal ions increases from low pH and reach equilibrium on pH 4 before decreases. The exchange rate of the metal ions for SRC and MSRC is t1/2 <12 min. Liquors from electroplating plants, which containing various metal ions was loaded to the packed prepared resin in column and it shown metals recovery was highly efficient up to 99 %. Therefore the proposed MSRC could be used to removal of toxic metals for environmental protection. 88 3rd ICYC 2010 Universiti Sains Malaysia ENV-O3 23rd-25th June 2010 BASIC AND REACTIVE DYES SORPTION ENHANCEMENT OF RICE HULL THROUGH CHEMICAL MODIFICATION
1,* Siew-Teng Ong, Weng-Nam Lee, Eng-Cheong Khoo and Seok-Theng Ooi 2 2 1 1 Department of Chemical Science, Faculty of Science, Universiti Tunku Abdul Rahman, Jalan Universiti, Bandar Barat, 31900 Kampar, Perak, Malaysia 2 Department of Science, Faculty of Engineering and Science, Universiti Tunku Abdul Rahman, Jalan Genting Kelang, Setapak 53300 Kuala Lumpur, Malaysia E-mail: [email protected] The sorption characteristics ethylenediaamine tetraacetic acid mo dified rice husk (ERH) to remove Methylene Blue (MB) and Reactive Orange 16 (RO16) under batch and continuous flow conditions have been investigated. Three isotherm models were used to fit with equilibrium data, namely Langmuir, Freundlich and BET models. It was found that the equilibrium fitted well in Freundlich isotherm with 2 higher regression coefficient value, R . The maximum adsorption capacities of MB and RO16 in binary system were 49.51 mg/g and 17.24 mg/g, respectively. Sorption kinetic was studied and results showed that pseudo-second-order provides the best description of MB and RO16 adsorption in both single and binary dye solutions. Thermodynamic parameters showed that adsorption of MB and RO16 are exothermic and endothermic reactions, respectively. Column studies revealed that the breakthrough was dependent on influ...
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This note was uploaded on 02/17/2011 for the course CHEMISTRY 101 taught by Professor Csr during the Spring '11 term at University of Louisville.
- Spring '11