Screening of bacteria for coal beneficiation

2nd Mineral Processing and Technology International Conference

工业技术（总论）;矿业工程

Nurhawaisyah, S.R.^1 ; Sanwani, E.^1 ; Chaerun, S.K.^1^2 ; Rasyid, M.A.^1

Department of Metallurgical Engineering, Faculty of Mining and Petroleum Engineering, Institut Teknologi Bandung, Ganesha 10, West Java, Bandung

40132, Indonesia^1

Geomicrobiology-Biomining and Biocorrosion Laboratory, Microbial Culture Collection Laboratory, Biosciences and Biotechnology Research Center (BBRC), Institut Teknologi Bandung, Indonesia^2

关键词: Biobeneficiation;    Clean coal technologies;    Coal beneficiation;    Low energy consumption;    Oxidative conversion;    Pseudomonas plecoglossicida;    Reduced sulfur compounds;    Simple operation;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/478/1/012021/pdf
DOI  :  10.1088/1757-899X/478/1/012021

学科分类：工业工程学

来源: IOP

【 摘 要 】

Biobeneficiation is considered to be a clean coal technology as an alternative method to reduce sulfur and ash content present in coal by using microbes, in particular bacteria. Recent studies have demonstrated that bacteria can oxidize iron and reduced sulfur compounds present in coal because they promote the oxidative conversion of the reduced forms of sulfur to soluble, easily washed-out compounds. Moreover, the use of bacteria in coal beneficiation has the following advantages, such as simple operation, extensive installation, performed under the mild condition without harmful product, low energy consumption and eco-friendly method. Hence, this study dealt with the investigation of the bacteria capable of oxidizing iron and sulfur compounds and also reducing ash content present in coal. Nine bacteria isolated from mercury-contaminated gold mine sites in Bandung, West Java Province, Indonesia were screened for their ability to oxidize iron and sulfur compounds and reduce ash content. Of the nine bacteria studied, two bacteria (i.e., Pseudomonas plecoglossicida and Pseudomonas hibiscicola) were able to oxidize iron and sulfur compounds and reduce ash content at pH of ∼4. The findings of this study provide evidence that both bacteria could be employed as an oxidizing agent that will be applicable for the beneficiation of coal.