Methane Production from the Organic Fraction of Municipal Solid Waste Under Psychrophilic, Mesophilic, and Thermophilic Temperatures at Different Organic Loading Rates
Por:
Ossa-Arias, Maria del Mar, Gonzalez-Martinez, Simon
Publicada:
1 sep 2021
Ahead of Print:
1 feb 2021
Resumen:
Methane production from the organic fraction of municipal solid waste
(OFMSW) can be achieved under different operational conditions, but
authors cannot conclude which conditions yield the best methane
production. This research deals with how different organic loading rates
(OLR) at different temperatures affect methane production during the
anaerobic digestion of OFMSW. For 48 days, anaerobic granular sludge was
adapted to OFMSW at 35 degrees C, and then, for another 85 days, using a
semicontinuous digester, the mixture was further acclimated using OFMSW
as substrate. This digestate was then used to inoculate three digesters
at 55, 35, and 55 degrees C. The digesters were fed with OFMSW under
different OLR. The digester at 55 degrees C reached stable methane
production after 90 days at a low OLR. At 35 degrees C, methane
production decreased with increasing OLR. At 20 degrees C, with
increasing OLR, methane production declined as VFA concentration
increased. The digester operating at 35 degrees C reached stable
operation faster than the other two under the higher OLR. Slowly
increasing the OLR allowed the adequate adaptation of the microorganisms
to the substrate and temperature.
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Filiaciones:
Ossa-Arias, Maria del Mar:
Univ Nacl Autonoma Mexico, Natl Univ Mexico, Dept Environm Engn, Inst Engn, Mexico City, DF, Mexico
Gonzalez-Martinez, Simon:
Univ Nacl Autonoma Mexico, Natl Univ Mexico, Dept Environm Engn, Inst Engn, Mexico City, DF, Mexico
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