Effects of dairy manure-derived biochar on psychrophilic, mesophilic and thermophilic anaerobic digestions of dairy manure.
Bioresour Technol
; 250: 927-931, 2018 Feb.
Article
em En
| MEDLINE
| ID: mdl-29198415
ABSTRACT
Effects of dairy manure-derived biochar (M-BC) on methane production in anaerobic digestion (AD) of dry dairy manure were investigated with three different concentrations of biochar (0, 1 and 10â¯g/L) and temperatures (psychrophilic, 20⯰C; mesophilic, 35⯰C; thermophilic, 55⯰C). Compared with the AD without any biochar, the cumulative methane and yield in the AD with 10â¯g/L biochar were increased to 27.65% and 26.47% in psychrophilic, 32.21% and 24.90% in mesophilic and 35.71% and 24.69% in thermophilic digestions. The addition of M-BC shortened the lag phases of AD at all temperatures in the study while it lowered the concentration of total VFAs and propionic acid. It was suggested that the high nutrients and alkalinity potential of M-BC (i.e. 9.1% Ca, 3.6% Mg, 1.3% N, 0.14% P) would play significant roles in enhancing methane production and shortening lag phases from the AD of dairy manure.
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Base de dados:
MEDLINE
Assunto principal:
Carvão Vegetal
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Esterco
Idioma:
En
Ano de publicação:
2018
Tipo de documento:
Article
País de afiliação:
Estados Unidos