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Korean Journal of Chemical Engineering, Vol.17, No.1, 118-121, 2000
Preparation of Modified Silica for Heavy Metal Removal
2-hydroxy-5-nonyl-acetophenoneoxime, di-2,4,4-trimethylpentyl phosphinic acid, a teriary amine were bound on the silica surface after surface modification. The adsorption of the metal chelating agents appears to be due to physical attraction such as van der Waals interactions and not covalent bonding. Stability tests show that the adsorbents are stable under acidic conditions. Batch tests were conducted for heavy metal ion adsorption and elution. Heavy metal ions which were adsorbed to the surface of the adsorbents could be recovered by elution with 0.1 M HCI.
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- Jeon C, Park JY, Yoo YJ, Korean Journal of Chemical Engineering, 18(6), 955, 2001
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- Kim SJ, Lim KH, Joo KH, Lee MJ, Kil SG, Cho SY, Korean Journal of Chemical Engineering, 19(6), 1078, 2002
- Rengaraj S, Kim Y, Joo CK, Choi K, Yi J, Korean Journal of Chemical Engineering, 21(1), 187, 2004
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- Kim TY, Jeung SY, Cho SY, Kang Y, Kim SJ, Journal of Industrial and Engineering Chemistry, 10(5), 695, 2004
- Zhao X, Jia Q, Zhou W, Korean Journal of Chemical Engineering, 26(6), 1729, 2009
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