Amidoxime에 의한 금속 추출 평형 및 추출 속도

신정호; 민성기; 정갑섭; 김주석

Journal of the Korean Industrial and Engineering Chemistry, Vol.5, No.1, 149-159, February, 1994

Export Citation

Amidoxime에 의한 금속 추출 평형 및 추출 속도

Equlibrium and Kinetics of Metal Extraction by Amidoxime

신정호, 민성기, 정갑섭, 김주석

초록

금속의 용매 추출에 amidoxime의 추출제로서의 특성을 검토하기 위하여 benzamidoxime 및 phenylacetamidoxime에 의한 금속 추출평형 및 추출속도에 관한 실험 및 이론적 고찰을 하였다 Cu, Pb, Zn 및 Cd 등 단독 금속계와 혼합 금속계에 대한 amidoxime-클로로포름에 의한 추출에서 추출비와 수소이온 농도 및 추출제 농도간의 상관관계로부터 추출기구와 추출성을 검토하고, 수상측 경막 내 확산 방정식으로부터 도출된 이론적 속도식과 실험적 속도식을 비교함으로써 초기 추출 속도식은 R_o=kC_HRo(C_Mo/C_Ho)^1/2로 표시할 수 있었으며, 추출과정의 율속 단계를 고찰하였다. amidoxime에 의한 Cu의 추출 화학종은 CuR₂의 형이었다.

The kinetics and equilibrium of metal extraction by benzamidoxime and phenylacetamidoxime-chloroform were investigated to apply amidoxime to metal extraction as chelating agent. The overall extraction constant extraction mechanism and selective extraction of copper were examined from the relation among extraction ratio, hydrogen ion concentration and extractant concentration. The experimental rate equation of copper extraction coincided with the theoretical rate equation and was expressed as R_o=kC_HRo(C_Mo/C_Ho)^1/2. The chemical species extracted was found to the type of CuR₂.

[References]

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[Referenced By]

[1] Rod V, Sir Z, Gruberova A, Ind. Eng. Chem. Fundam., 25, 96 (1986)

[2] Harada M, Miyake Y, Kagahara Y, J. Chem. Eng. Jpn., 22, 168 (1989)

[3] Preston JS, Luklinska ZB, J. Inorg. Nucl. Chem., 42, 431 (1980)

[4] Szymanowski J, Jeszka P, Ind. Eng. Chem. Process Des. Dev., 24, 245 (1985)

[5] Komasawa I, Otake T, Ind. Eng. Chem. Fundam., 22, 122 (1983)

[6] Hirotsu T, Katoh S, Sugasaka K, Sep. Sci. Technol., 21, 1101 (1986)

[7] Omichi H, Katakai A, Okamoto J, Sep. Sci. Technol., 20, 163 (1985)

[8] Hirotsu T, Katoh S, Sugasaka K, J. Chem. Soc.-Dalton Trans., 1983 (1986)

[9] Matsumoto M, Kondo K, Nakashio F, J. Chem. Eng. Jpn., 23, 359 (1990)

[10] Tietz LF, Eicher T, "Reaction und Synthesen in Organish Chemishen Proktikum," 319, Georg, Yhieme, New York (1981)

[11] Ishii H, Odashima T, Mogi H, J. Chem. Soc. Jpn., 10, 1442 (1983)