Integrated bacterial process for the treatment of a spent nickel catalyst

被引：28

作者：

Bosio, V. ^{[1
]}

Viera, M. ^{[1
]}

Donati, E. ^{[1
]}

机构：

[1] Natl Univ La Plata, CINDEFI, Dept Quim, Consejo Nacl Invest Cient & Tecn, RA-1900 La Plata, Argentina

来源：

JOURNAL OF HAZARDOUS MATERIALS | 2008年 / 154卷 / 1-3期

关键词：

nickel; recovery; spent catalyst; Desulfovibrio; Acidithiobacillus thiooxidans;

D O I：

10.1016/j.jhazmat.2007.10.095

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

Integrated biological processes involving the dissolution and subsequent precipitation have been used for the treatment of the spent material from the hydrogenation of vegetable oil containing a high-level of nickel. Our results show that nickel was successfully leached using Acidithiobacillus thiooxidans. The percentages of nickel leached using A. thiooxidans were higher than those obtained with dilute sulphuric acid solutions. Due to the physical characteristics of the residue, the best results were obtained when the leaching process was carried out using sulphuric acid biogenerated by an A. thiooxidans biofilm. The recovery of nickel from the leachates was performed at room temperature by precipitating with sulphide generated by Desulfovibrio cells. Indirect precipitation using sulphide generated in Desulfovibrio sp. cultures allowed the recovery of nickel as the very insoluble nickel sulphide. (C) 2007 Elsevier B.V. All rights reserved.

引用

页码：804 / 810

页数：7

共 34 条

[1] Recovery of nickel oxide from spent catalyst [J].