Leaching kinetics of cadmium from scallop waste by dilute sulfuric acid solution

被引：4

作者：

Huang, Kai ^{[1
]}

Ghimire, Kedar Nath ^{[1
]}

Inoue, Katsutoshi ^{[1
]}

Ohto, Keisuke ^{[1
]}

Kawakita, Hidetaka ^{[1
]}

Harada, Hiroyuki ^{[1
]}

Morita, Minoru ^{[2
]}

机构：

[1] Saga Univ, Dept Appl Chem, Saga, Japan

[2] Unirex Corp, Nishi Ku, Hokkaido 0630837, Japan

来源：

JOURNAL OF CHEMICAL ENGINEERING OF JAPAN | 2007年 / 40卷 / 09期

关键词：

leaching kinetics; cadmium; uro; shrinking core model;

D O I：

10.1252/jcej.07WE020

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

摘要：

The leaching kinetics of cadmium from scallop waste in dilute sulfuric acid was investigated by examining the effect of temperature (293-333 K), pH (1.5-2.5), and particle size on the leaching rate. The kinetics of the cadmium extraction process with intraparticle diffusion was reasonably interpreted according to the shrinking core model as a rate-determining step in accordance with the value of the activation energy, 15.9 kJ/mol. Increasing temperature, and decreasing pH and particle size positively influence the extraction of cadmium from the uro.

引用

页码：786 / 791

页数：6

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