Leaching of copper oxide with different acid solutions

被引：207

作者：

Habbache, N. ^{[1
]}

Alane, N. ^{[1
]}

Djerad, S. ^{[1
]}

Tifouti, L. ^{[1
]}

机构：

[1] Univ Annaba, Dept Chem Engn, Lab Environm Engn, Annaba 23000, Algeria

来源：

CHEMICAL ENGINEERING JOURNAL | 2009年 / 152卷 / 2-3期

关键词：

Copper oxide; Inorganic acids; Citric acid; Dissolution rate; Corundum; CHLORIDE SOLUTIONS; OXIDATION; CATALYSTS; CORROSION; RECOVERY; KINETICS;

D O I：

10.1016/j.cej.2009.05.020

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

In this study, the dissolution of CuO in HCl, H2SO4, HNO3 and citric acid solutions was investigated in a batch reactor employing parameters expected to affect the dissolution rate of copper such as stirring speed, temperature and acid concentration. It was found that 99.95% of copper was dissolved after 14 min with inorganic acids at 0.5 M, 25 degrees C and I/s = 10 ml/g while more drastic operation conditions were needed to reach the same dissolution efficiency with citric acid solution. Anions seem to be involved in the surface reaction. The dissolution kinetics of CuO was examined according to heterogeneous model and it was found that the dissolution rate was controlled by surface chemical process in all cases. (C) 2009 Elsevier B.V. All rights reserved.

引用

页码：503 / 508

页数：6

共 21 条

[1] Recovery of nickel oxide from spent catalyst
Al-Mansi, NM
Monem, NMA
[J]. WASTE MANAGEMENT, 2002, 22 (01) : 85 - 90
[2] Dissolution kinetics of colemanite in oxalic acid solutions
Alkan, M
Dogan, M
[J]. CHEMICAL ENGINEERING AND PROCESSING-PROCESS INTENSIFICATION, 2004, 43 (07) : 867 - 872
[3] Hydrolysis and oxidative decomposition of ethyl acetate in sub- and super-critical water
Armbruster, U
Martin, A
Krepel, A
[J]. APPLIED CATALYSIS B-ENVIRONMENTAL, 2001, 31 (04) : 263 - 273
[4] Ata ON, 2001, CHEM ENG TECHNOL, V24, P409, DOI 10.1002/1521-4125(200104)24:4<409::AID-CEAT409>3.0.CO
[5] 2-0
[6] Role of Cl- and NO3- ions on the corrosion behavior of 20% SiCp reinforced 6061-Al metal matrix composite: A correlation between electrochemical studies and atomic force microscopy
Datta, J.
Samanta, B.
Jana, A.
Sinha, S.
Bhattacharya, C.
Bandyopadhyay, S.
[J]. CORROSION SCIENCE, 2008, 50 (09) : 2658 - 2668
[7] Leaching kinetics of calcined magnesite in citric acid solutions
Demir, F
Laçin, O
Dönmez, B
[J]. INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH, 2006, 45 (04) : 1307 - 1311
[8] FORWARD FA, 1985, SME MINERAL PROCESSI, V2
[9] GLINKA N, 1987, CHIMIE GEN, V2, P234
[10] Habashi F., 1983, Arab Mining Journal, V4, P46

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