Catalytic effects of activated carbon and surfactants on bioleaching of cobalt ore

被引:40
作者
Liu, Wei [1 ]
Yang, Hong-ying [1 ]
Song, Yan [1 ]
Tong, Lin-lin [1 ]
机构
[1] North Eastern Univ, Sch Met & Mat, Shenyang 110819, Peoples R China
基金
国家高技术研究发展计划(863计划); 中国国家自然科学基金;
关键词
Activated carbon; Surfactant; Combined catalyst; Bioleaching; Carrollite; CHALCOPYRITE; TWEEN-80;
D O I
10.1016/j.hydromet.2014.12.010
中图分类号
TF [冶金工业];
学科分类号
0806 ;
摘要
The effects of activated carbon and/or surfactants on the bioleaching behavior of cobalt ore have been investigated in this paper. It was demonstrated that activated carbon and surfactants (Tween-20 and Tween-80) can significantly promote the dissolution rate of carrollite, either individually or in combination when coupled with ZY101 bacteria strain. The cobalt leaching efficiency increased from 71.3% to 90.8% when 1.0 g/L activated carbon was added, and such an improvement was ascribed to the galvanic interaction between activated carbon and carrollite. In addition, the leaching efficiency of cobalt increased from 71.3% to 92.4% by 0.1 g/L Tween-20 or to 93.2% by 0.1 g/L Tween-80, by changing the surface condition of the mineral and accelerating the bio-oxidation of formed elemental sulfur. When both activated carbon and surfactant were added, the leaching efficiency of cobalt increased by more than 22%, and meanwhile the leaching time decreased by more than 30%. It is shown that the catalytic effect of the combined catalyst was much more significant than that when only using a single catalyst A similar trend was observed in the case of elemental copper extraction during the bioleaching process. (C) 2014 Elsevier B.V. All rights reserved.
引用
收藏
页码:69 / 75
页数:7
相关论文
共 16 条
[1]   Microbial extraction of nickel from chromite overburdens in the presence of surfactant [J].
Behera, Sunil Kumar ;
Sukla, Lala Behari .
TRANSACTIONS OF NONFERROUS METALS SOCIETY OF CHINA, 2012, 22 (11) :2840-2845
[2]   Electrochemical passivation of sphalerite during bacterial oxidation in the presence of galena [J].
da Silva, G ;
Lastra, MR ;
Budden, JR .
MINERALS ENGINEERING, 2003, 16 (03) :199-203
[3]   Cooperative action of attached and planktonic cells during bioleaching of chalcopyrite with Sulfolobus metallicus at 70 °C [J].
Gautier, V. ;
Escobar, B. ;
Vargas, T. .
HYDROMETALLURGY, 2008, 94 (1-4) :121-126
[4]   Effect of surfactant OPD on the bioleaching of marmatite [J].
Lan, Zhuoyue ;
Hu, Yuehua ;
Qin, Wenqing .
MINERALS ENGINEERING, 2009, 22 (01) :10-13
[5]  
[李宏煦 Li Hongxu], 2003, [中国有色金属学报, The Chinese Journal of Nonferrous Metals], V13, P1283
[6]   Effect of activated carbon on chalcopyrite bioleaching with extreme thermophile Acidianus manzaertsis [J].
Liang, Chang-Li ;
Xia, Jin-Lan ;
Zhao, Xiao-Juan ;
Yang, Yi ;
Gong, San-Qiang ;
Nie, Zhen-Yuan ;
Ma, Chen-Yan ;
Zheng, Lei ;
Zhao, Yi-Dong ;
Qiu, Guan-Zhou .
HYDROMETALLURGY, 2010, 105 (1-2) :179-185
[7]  
Liu J., 2008, HYDROMETALL CHINA, P148
[8]  
Liu X.R., 2000, HYDROMETALL CHINA, V19, P22
[9]   Effect of activated carbon on the bioleaching of chalcopyrite concentrate [J].
Nakazawa, H ;
Fujisawa, H ;
Sato, H .
INTERNATIONAL JOURNAL OF MINERAL PROCESSING, 1998, 55 (02) :87-94
[10]   ACTION OF THIOBACILLUS-THIOOXIDANS ON SULFUR IN THE PRESENCE OF A SURFACTANT AGENT AND ITS APPLICATION IN THE INDIRECT DISSOLUTION OF PHOSPHORUS [J].
OTERO, AP ;
CURUTCHET, G ;
DONATI, E ;
TEDESCO, P .
PROCESS BIOCHEMISTRY, 1995, 30 (08) :747-750