Recovery of nickel oxide from spent catalyst

被引：95

作者：

Al-Mansi, NM ^{[1
]}

Monem, NMA ^{[1
]}

机构：

[1] Cairo Univ, Dept Chem Engn, Fac Engn, Cairo, Egypt

来源：

WASTE MANAGEMENT | 2002年 / 22卷 / 01期

关键词：

spent catalyst; nickel oxide; nickel recovery; leaching;

D O I：

10.1016/S0956-053X(01)00024-1

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

This study investigates the possibility of recovering nickel from the spent catalyst (NiO/Al2O3) resulting from the steam reforming process to produce water gas (H-2/H2O) in many industries. In the extraction process, nickel is recovered as sulfate using sulfuric acid as a solvent. The considered parameters affecting nickel recovery were acid concentration, temperature and time of digestion solid:liquid ratio, particle size and stirring rate. Nickel was to be directly recovered as a sulfate salt by direct crystallization method. The conversion was 99% at 50% sulfuric acid concentration, solid: liquid ratio (1:12) by weight.. particle size less than 500 micron for more than 5 h and 800 rpm at 100degreesC. (C) 2002 Elsevier Science Ltd. All rights reserved.

引用

页码：85 / 90

页数：6

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