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Screening of microorganisms able to degrade low-rank coal in aerobic conditions: Potential coal biosolubilization mediators from coal to biochemicals

Title
Screening of microorganisms able to degrade low-rank coal in aerobic conditions: Potential coal biosolubilization mediators from coal to biochemicals
Authors
David, YokimikoBaylon, Mary GracePamidimarri, Sudheer D. V. N.Baritugo, Kei-AnneChae, Cheol GiKim, You JinKim, Tae WanKim, Min-SikNa, Jeong GeolPark, Si Jae
Ewha Authors
박시재
SCOPUS Author ID
박시재scopus
Issue Date
2017
Journal Title
BIOTECHNOLOGY AND BIOPROCESS ENGINEERING
ISSN
1226-8372JCR Link1976-3816JCR Link
Citation
vol. 22, no. 2, pp. 178 - 185
Keywords
coalbiological treatmentcoal solubilizationcoal degradation
Publisher
KOREAN SOC BIOTECHNOLOGY & BIOENGINEERING
Indexed
SCIE; SCOPUS; KCI WOS
Abstract
Coal is one of the major sources of energy, fuel, and other related chemicals. The processes to utilize coal for energy, fuel and other chemicals such as coal combustion, liquefaction, carbonization, and gasification pose a great threat to the environment by emitting toxic particles and CO2 to the atmosphere. Thus, biological beneficiation of coal can be a good strategy to utilize coal with environmental sustainability. Here, we report the screening of microorganisms able to degrade or depolymerize coal. These host strains are potential candidates for the development of biological treatment process of coal. A total of 45 microbial strains were isolated from sludge enriched with coal and were identified based on 16S rRNA sequencing. Four strains of three genera, Cupriavidus sp., Pseudomonas sp., and Alcaligenes sp., were further characterized for their abilities to degrade coal. The degree of coal degradation was analyzed by measuring the increase in absorbance at 450 nm by UV spectroscopy. These microorganisms were also able to increase the pH of the culture media as a response to the acidic nature of coal. Laccase-like activity was also found in these strains when tested for RBBR dye degradation. Since biological degradation of coal through the use of microorganisms is a good alternative to chemical combustion of coal, microbial strains isolated in this study can be potential biological catalysts for coal conversion into valuable chemicals.
DOI
10.1007/s12257-016-0263-9
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엘텍공과대학 > 화학신소재공학전공 > Journal papers
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