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Influence of biochar addition on methane metabolism during thermophilic phase of composting
Author(s) -
Sonoki Tomonori,
Furukawa Toru,
Jindo Keiji,
Suto Koki,
Aoyama Masakazu,
SánchezMonedero Miguel Á.
Publication year - 2013
Publication title -
journal of basic microbiology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.58
H-Index - 54
eISSN - 1521-4028
pISSN - 0233-111X
DOI - 10.1002/jobm.201200096
Subject(s) - biochar , thermophile , manure , methane , compost , methane monooxygenase , chemistry , ammonia monooxygenase , chicken manure , environmental chemistry , agronomy , biology , pyrolysis , archaea , biochemistry , enzyme , organic chemistry , gene
CH 4 is known to be generated during the most active phase of composting, even in well‐managed composting piles. In this manuscript, we studied the influence of biochar on the CH 4 metabolism during composting of cattle manure and local organic wastes. We evaluated the presence of methanogens and methanotrophs in the composting piles quantified by the level of mcrA encoding methyl coenzyme M reductase alpha subunit and pmoA encoding particulate methane monooxygenase. A decrease of methanogens ( mcrA ) and an increase of methanotrophs ( pmoA ) were measured in the composting mixture containing biochar during the most active phase of composting. During the thermophilic phase, the mcrA / pmoA ratios obtained in the composting piles with biochar were twofold lower than in the pile without biochar.