Thermophilic anaerobic digester performance under different feed-loading frequency

Abstract

The effect of feed-loading frequency on digester performance was studied on a thermophilic anaerobic digester with a working volume of 27.43 m(3). The digester was fed 0.93 m(3) of chicken-litter slurry/d, containing 50.9 g/L chemical oxygen demand. The treatments were loading frequencies of 1, 2, 6, and 12 times/d. The hourly pH, biogas production, and methane percent of the biogas were less stable at lower feed frequencies. There was no statistical difference among treatments in methanogenic activity. The feed-loading frequency of six times per day treatment provided the greatest biogas production.

Metagenome Sequences of a Thermophilic Anaerobic Digester Adapted to a Low C/N Ratio, High-Ammonia Feedstock (Poultry Litter)

“…This particular microbiome has shown long-term stability toward this suboptimal substrate. Several studies from our group have examined important features of this digester, including mass-energy balance ( 7 ), feed-loading frequency ( 8 ), and power consumption efficiency ( 9 ). Bacterial diversity of this microbiome was previously analyzed with 16S rRNA gene-targeted pyrosequencing ( 10 ); adaptability during codigestion was also studied ( 11 ).…”

Optimasi Desain Kombinasi Agitator pada Anaerobic Buffled Reactor Biomass

“…Perlu diketahui bahwa volume limbah organik sebagai bahan primer harus dipantau secara kontinyu dan dapat dikendalikan secara hati-hati agar kondisi pada reaktor tetap stabil [7]. Beberapa peneliti telah melaporkan bahwa perubahan suhu mempengaruhi nilai gas metana yang dihasilkan [8].…”