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| Application Status of Lignocellulose in Sulfide Bioleaching |
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Received:June 30, 2020
Revised:July 10, 2020
Accepted:July 13, 2020
Published Online:September 17, 2020
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| DOI：doi：10.3969/j.issn.1007-7545.2020.10.002 |
| KeyWord:biotechnology; copper leaching; sulfide; lignocellulose; cyanide residue; arsenic immobilization; hydrolysis; microbial community |
| Author | Institution |
| LI Jia-feng |
东北大学 |
| YANG Hong-ying |
东北大学 |
| TONG Lin-lin |
东北大学 |
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| Abstract: |
| Bioleaching technology is successfully used to recover many metal sulfides based on its characteristics of low cost, pollution-free, and simple requirements. However, the problems of slow bioleaching speed and low leaching extent always exist, especially for chalcopyrite. Lignocellulose, an inexpensive renewable resource, can accelerate bioleaching process, such as waste newspapers, rice husks, and bamboo scraps. Application research of lignocellulose in bioleaching and sulfuric acid hydrolysis of lignocelluloses were reviewed. Comprehensive effects of lignocellulose on bioleaching efficiency, minerals, ORP, pH, Fe3+/Fe2+, and microbial community were analyzed. Mechanism of lignocellulose promoting bioleaching is summarized, and related research and development trends of cyanide residue treatment and arsenic fixation are discussed to provide reference for related research. |
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