Coal biomethanation potential of various ranks from Pakistan: A possible alternative energy source
| Autor: | Zaixing Huang, Muhammad Ishtiaq Ali, Nazia Khatoon, Huan He, William H. Orem, Uzma Farooq, Elliott P. Barnhart, Asif Jamal, John R. SanFilipo, Aneela Younas Malik |
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| Rok vydání: | 2020 |
| Předmět: |
Coalbed methane
020209 energy Strategy and Management geology 02 engineering and technology complex mixtures Industrial and Manufacturing Engineering Methane chemistry.chemical_compound Underground coal gasification otorhinolaryngologic diseases 0202 electrical engineering electronic engineering information engineering Coal gas Coal 0505 law General Environmental Science Bituminous coal Waste management Renewable Energy Sustainability and the Environment business.industry 05 social sciences geology.rock_type technology industry and agriculture Coal mining respiratory system Microbial consortium respiratory tract diseases chemistry 050501 criminology Environmental science business |
| Zdroj: | Journal of Cleaner Production. 255:120177 |
| ISSN: | 0959-6526 |
| DOI: | 10.1016/j.jclepro.2020.120177 |
| Popis: | The present study investigated the possibility of microbial transformations of coal to gas (biogasification) as an alternative to conventional coal mining because this approach has the potential to be less expensive, cleaner, and provide greater access to deeper coal resources. Biogasification is often associated with low rank coal such as lignite and subbituminous coal that has produced enough coalbed methane to be commercially viable in the United States and Australia. However, little work has been done to analyze the potential of biogasification in higher rank coal. For this purpose, bioassay using a wetland-derived consortium and a coal-derived consortium were used to analyze coal samples from Pakistan belonging to different ranks (lignite to semi-anthracite). Among all samples a low volatile bituminous coal produced the maximum methane 34.95 μmol CH4/g coal with the wetland-derived microbial consortium, followed by subbituminous coal (30.18 μmol CH4/g coal). Lower methane levels were recorded with the coal-derived consortium, with subbituminous coal yielding the highest concentration (25.1 μmol CH4/g coal). Methane levels appeared to be increasing on the last measurement indicating the coal-derived consortium was slower than the wetland-derived consortium but could still catalyze biogasification in higher rank coals. Quantitative polymerase chain reaction analysis for mcrA functional genes indicated that the microbial community members that produce methane (methanogens) varied during the incubations. Energy conversion efficiency of different strategies (other biological and underground coal gasification processes) was also compared and discussed. This study was the first to compare bioassay using consortia of microbes non-indigenous and indigenous to coal and indicate the potential of biogasification from many different coalbeds across Pakistan. |
| Databáze: | OpenAIRE |
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