Studies on the effect of coal particle size on biodepyritization of high sulfur coal in batch bioreactor

• Authors: Sradhanjali Singh , Haragobinda Srichandan , Ashish Pathak , Chandra Sekhar Gahan , Sujeong Lee , Dong-Jin Kim , Byoung-Gon Kim
• Languages of publication: EN

Abstracts

EN

The moderate thermophilic mix culture bacteria were used to depyritize the Illinois coal of varying particle sizes (-100 μm, 100-200 μm, +200 μm). Mineral libration analysis showed the presence of pyrite along with other minerals in coal. Microbial depyritization of coal was carried out in stirred tank batch reactors in presence of an iron-free 9K medium. The results indicate that microbial depyritization of coal using moderate thermophiles is an efficient process. Moreover, particle size of coal is an important parameter which affects the efficiency of microbial depyritization process. At the end of the experiment, a maximum of 75% pyrite and 66% of pyritic sulphur were removed from the median particle size. The XRD analysis showed the absence of pyrite mineral in the treated coal sample. A good mass balance was also obtained with net loss of mass ranging from 5-9% showing the feasibility of the process for large scale applications.

Keywords

EN

biodepyritization; coal; pyrite; stirred tank bioreactor

• Publisher: De Gruyter Open
• Journal: Polish Journal of Chemical Technology
• Year: 2015
• Volume: 17
• Issue: 1
• Pages: 97-102

Dates

published

1 - 3 - 2015

online

25 - 3 - 2015

Contributors

author

Sradhanjali Singh

• Korea Institute of Geoscience and Mineral Resources (KIGAM), Mineral Resource Research Division, Yuseong-gu, Daejeon, 305-350, South Korea

author

Haragobinda Srichandan

• Korea Institute of Geoscience and Mineral Resources (KIGAM), Mineral Resource Research Division, Yuseong-gu, Daejeon, 305-350, South Korea

author

Ashish Pathak

• Korea Institute of Geoscience and Mineral Resources (KIGAM), Mineral Resource Research Division, Yuseong-gu, Daejeon, 305-350, South Korea

author

Chandra Sekhar Gahan

• Central University of Rajasthan, Department of Microbiology, School of Life Sciences, India

author

Sujeong Lee

• Korea Institute of Geoscience and Mineral Resources (KIGAM), Mineral Resource Research Division, Yuseong-gu, Daejeon, 305-350, South Korea

author

Dong-Jin Kim

• Korea Institute of Geoscience and Mineral Resources (KIGAM), Mineral Resource Research Division, Yuseong-gu, Daejeon, 305-350, South Korea

author

Byoung-Gon Kim

• Korea Institute of Geoscience and Mineral Resources (KIGAM), Mineral Resource Research Division, Yuseong-gu, Daejeon, 305-350, South Korea

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Identifiers

DOI

10.1515/pjct-2015-0014