Responses of zinc recovery to temperature and mineral composition during sphalerite bioleaching process
Abstract Temperature and energy resources (e.g., iron, sulfur and organic matter) usually undergo dynamic changes, and play important roles during industrial bioleaching process. Thus, it is essential to investigate their synergistic effects and the changes of their independent effects with simultan...
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doaj-4c75f86a3f574c0c87812bc0dd7ce10c2020-11-25T02:28:58ZengSpringerOpenAMB Express2191-08552017-10-017111410.1186/s13568-017-0491-1Responses of zinc recovery to temperature and mineral composition during sphalerite bioleaching processYunhua Xiao0Xueduan Liu1Jun Fang2Yili Liang3Xian Zhang4Delong Meng5Huaqun Yin6College of Bioscience and Biotechnology and College of Agronomy, Hunan Agricultural UniversitySchool of Minerals Processing and Bioengineering, Central South UniversityCollege of Bioscience and Biotechnology and College of Agronomy, Hunan Agricultural UniversitySchool of Minerals Processing and Bioengineering, Central South UniversitySchool of Minerals Processing and Bioengineering, Central South UniversitySchool of Minerals Processing and Bioengineering, Central South UniversitySchool of Minerals Processing and Bioengineering, Central South UniversityAbstract Temperature and energy resources (e.g., iron, sulfur and organic matter) usually undergo dynamic changes, and play important roles during industrial bioleaching process. Thus, it is essential to investigate their synergistic effects and the changes of their independent effects with simultaneous actions of multi-factors. In this study, we explored the synergistic effects of temperature and original mineral compositions (OMCs, energy resources) on the sphalerite bioleaching process. The microbial community structure was monitored by 16S rRNA gene sequencing technology and showed clear segregation along temperature gradients and Shannon diversity decreased at high temperature. On the contrary, the physicochemical parameters (pH and [Fe3+]) in the leachate were significantly affected by the OMCs. Interestingly, the influence of temperature on zinc recovery was greater at relatively simpler OMCs level, whereas the influence of OMCs was stronger at lower temperature. In addition, using [Fe3+], pH, relative abundances of dominant OTUs of microbial community and temperature as variable parameters, several models were constructed to predict zinc leaching efficiency, providing a possibility to predict the metal recovery efficiency under temperature change and variable energy resources.http://link.springer.com/article/10.1186/s13568-017-0491-1TemperatureOriginal mineral compositionsMicrobial communityZinc leaching efficiencyModels |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Yunhua Xiao Xueduan Liu Jun Fang Yili Liang Xian Zhang Delong Meng Huaqun Yin |
spellingShingle |
Yunhua Xiao Xueduan Liu Jun Fang Yili Liang Xian Zhang Delong Meng Huaqun Yin Responses of zinc recovery to temperature and mineral composition during sphalerite bioleaching process AMB Express Temperature Original mineral compositions Microbial community Zinc leaching efficiency Models |
author_facet |
Yunhua Xiao Xueduan Liu Jun Fang Yili Liang Xian Zhang Delong Meng Huaqun Yin |
author_sort |
Yunhua Xiao |
title |
Responses of zinc recovery to temperature and mineral composition during sphalerite bioleaching process |
title_short |
Responses of zinc recovery to temperature and mineral composition during sphalerite bioleaching process |
title_full |
Responses of zinc recovery to temperature and mineral composition during sphalerite bioleaching process |
title_fullStr |
Responses of zinc recovery to temperature and mineral composition during sphalerite bioleaching process |
title_full_unstemmed |
Responses of zinc recovery to temperature and mineral composition during sphalerite bioleaching process |
title_sort |
responses of zinc recovery to temperature and mineral composition during sphalerite bioleaching process |
publisher |
SpringerOpen |
series |
AMB Express |
issn |
2191-0855 |
publishDate |
2017-10-01 |
description |
Abstract Temperature and energy resources (e.g., iron, sulfur and organic matter) usually undergo dynamic changes, and play important roles during industrial bioleaching process. Thus, it is essential to investigate their synergistic effects and the changes of their independent effects with simultaneous actions of multi-factors. In this study, we explored the synergistic effects of temperature and original mineral compositions (OMCs, energy resources) on the sphalerite bioleaching process. The microbial community structure was monitored by 16S rRNA gene sequencing technology and showed clear segregation along temperature gradients and Shannon diversity decreased at high temperature. On the contrary, the physicochemical parameters (pH and [Fe3+]) in the leachate were significantly affected by the OMCs. Interestingly, the influence of temperature on zinc recovery was greater at relatively simpler OMCs level, whereas the influence of OMCs was stronger at lower temperature. In addition, using [Fe3+], pH, relative abundances of dominant OTUs of microbial community and temperature as variable parameters, several models were constructed to predict zinc leaching efficiency, providing a possibility to predict the metal recovery efficiency under temperature change and variable energy resources. |
topic |
Temperature Original mineral compositions Microbial community Zinc leaching efficiency Models |
url |
http://link.springer.com/article/10.1186/s13568-017-0491-1 |
work_keys_str_mv |
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1724835167141363712 |