Comparison Analysis of Coal Biodesulfurization and Coal’s Pyrite Bioleaching with Acidithiobacillus ferrooxidans
Acidithiobacillus ferrooxidans (A. ferrooxidans) was applied in coal biodesulfurization and coal’s pyrite bioleaching. The result showed that A. ferrooxidans had significantly promoted the biodesulfurization of coal and bioleaching of coal’s pyrite. After 16 days of processing, the total sulfur remo...
Saved in:
| Main Authors: | , , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Wiley
2013-01-01
|
| Series: | The Scientific World Journal |
| Online Access: | http://dx.doi.org/10.1155/2013/184964 |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1832558808707104768 |
|---|---|
| author | Fen-Fen Hong Huan He Jin-Yan Liu Xiu-Xiang Tao Lei Zheng Yi-Dong Zhao |
| author_facet | Fen-Fen Hong Huan He Jin-Yan Liu Xiu-Xiang Tao Lei Zheng Yi-Dong Zhao |
| author_sort | Fen-Fen Hong |
| collection | DOAJ |
| description | Acidithiobacillus ferrooxidans (A. ferrooxidans) was applied in coal biodesulfurization and coal’s pyrite bioleaching. The result showed that A. ferrooxidans had significantly promoted the biodesulfurization of coal and bioleaching of coal’s pyrite. After 16 days of processing, the total sulfur removal rate of coal was 50.6%, and among them the removal of pyritic sulfur was up to 69.9%. On the contrary, after 12 days of processing, the coal’s pyrite bioleaching rate was 72.0%. SEM micrographs showed that the major pyrite forms in coal were massive and veinlets. It seems that the bacteria took priority to remove the massive pyrite. The sulfur relative contents analysis from XANES showed that the elemental sulfur (28.32%) and jarosite (18.99%) were accumulated in the biotreated residual coal. However, XRD and XANES spectra of residual pyrite indicated that the sulfur components were mainly composed of pyrite (49.34%) and elemental sulfur (50.72%) but no other sulfur contents were detected. Based on the present results, we speculated that the pyrite forms in coal might affect sulfur biooxidation process. |
| format | Article |
| id | doaj-art-7ba1e0710db94b3a98eac6b74b396f94 |
| institution | Kabale University |
| issn | 1537-744X |
| language | English |
| publishDate | 2013-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | The Scientific World Journal |
| spelling | doaj-art-7ba1e0710db94b3a98eac6b74b396f942025-02-03T01:31:30ZengWileyThe Scientific World Journal1537-744X2013-01-01201310.1155/2013/184964184964Comparison Analysis of Coal Biodesulfurization and Coal’s Pyrite Bioleaching with Acidithiobacillus ferrooxidansFen-Fen Hong0Huan He1Jin-Yan Liu2Xiu-Xiang Tao3Lei Zheng4Yi-Dong Zhao5Key Laboratory of Coal Processing and Efficient Utilization of Ministry of Education, School of Chemical Engineering and Technology, China University of Mining and Technology, Xuzhou 221116, ChinaKey Laboratory of Coal Processing and Efficient Utilization of Ministry of Education, School of Chemical Engineering and Technology, China University of Mining and Technology, Xuzhou 221116, ChinaCollege of Zijin Mining, Fuzhou University, Fuzhou 350108, ChinaKey Laboratory of Coal Processing and Efficient Utilization of Ministry of Education, School of Chemical Engineering and Technology, China University of Mining and Technology, Xuzhou 221116, ChinaBeijing Synchrotron Radiation Facility, Institute of High Energy Physics, Chinese Academy of Science, Beijing 100049, ChinaBeijing Synchrotron Radiation Facility, Institute of High Energy Physics, Chinese Academy of Science, Beijing 100049, ChinaAcidithiobacillus ferrooxidans (A. ferrooxidans) was applied in coal biodesulfurization and coal’s pyrite bioleaching. The result showed that A. ferrooxidans had significantly promoted the biodesulfurization of coal and bioleaching of coal’s pyrite. After 16 days of processing, the total sulfur removal rate of coal was 50.6%, and among them the removal of pyritic sulfur was up to 69.9%. On the contrary, after 12 days of processing, the coal’s pyrite bioleaching rate was 72.0%. SEM micrographs showed that the major pyrite forms in coal were massive and veinlets. It seems that the bacteria took priority to remove the massive pyrite. The sulfur relative contents analysis from XANES showed that the elemental sulfur (28.32%) and jarosite (18.99%) were accumulated in the biotreated residual coal. However, XRD and XANES spectra of residual pyrite indicated that the sulfur components were mainly composed of pyrite (49.34%) and elemental sulfur (50.72%) but no other sulfur contents were detected. Based on the present results, we speculated that the pyrite forms in coal might affect sulfur biooxidation process.http://dx.doi.org/10.1155/2013/184964 |
| spellingShingle | Fen-Fen Hong Huan He Jin-Yan Liu Xiu-Xiang Tao Lei Zheng Yi-Dong Zhao Comparison Analysis of Coal Biodesulfurization and Coal’s Pyrite Bioleaching with Acidithiobacillus ferrooxidans The Scientific World Journal |
| title | Comparison Analysis of Coal Biodesulfurization and Coal’s Pyrite Bioleaching with Acidithiobacillus ferrooxidans |
| title_full | Comparison Analysis of Coal Biodesulfurization and Coal’s Pyrite Bioleaching with Acidithiobacillus ferrooxidans |
| title_fullStr | Comparison Analysis of Coal Biodesulfurization and Coal’s Pyrite Bioleaching with Acidithiobacillus ferrooxidans |
| title_full_unstemmed | Comparison Analysis of Coal Biodesulfurization and Coal’s Pyrite Bioleaching with Acidithiobacillus ferrooxidans |
| title_short | Comparison Analysis of Coal Biodesulfurization and Coal’s Pyrite Bioleaching with Acidithiobacillus ferrooxidans |
| title_sort | comparison analysis of coal biodesulfurization and coal s pyrite bioleaching with acidithiobacillus ferrooxidans |
| url | http://dx.doi.org/10.1155/2013/184964 |
| work_keys_str_mv | AT fenfenhong comparisonanalysisofcoalbiodesulfurizationandcoalspyritebioleachingwithacidithiobacillusferrooxidans AT huanhe comparisonanalysisofcoalbiodesulfurizationandcoalspyritebioleachingwithacidithiobacillusferrooxidans AT jinyanliu comparisonanalysisofcoalbiodesulfurizationandcoalspyritebioleachingwithacidithiobacillusferrooxidans AT xiuxiangtao comparisonanalysisofcoalbiodesulfurizationandcoalspyritebioleachingwithacidithiobacillusferrooxidans AT leizheng comparisonanalysisofcoalbiodesulfurizationandcoalspyritebioleachingwithacidithiobacillusferrooxidans AT yidongzhao comparisonanalysisofcoalbiodesulfurizationandcoalspyritebioleachingwithacidithiobacillusferrooxidans |