TY - JOUR
T1 - Anaerobic digestion of horse dung mixed with different bedding materials in an upflow solid-state (UASS) reactor at mesophilic conditions
AU - Böske, Janina
AU - Wirth, Benjamin
AU - Garlipp, Felix
AU - Mumme, Jan
AU - Van den Weghe, Herman
PY - 2014/4/1
Y1 - 2014/4/1
N2 - Aim of this study was to investigate the use of upflow anaerobic solid-state (UASS) digestion for treating horse manure. Biochemical methane potential (BMP) tests conducted for varying mixtures of dung (hay and silage feed) and bedding material (wheat straw, flax, hemp, wood chips) showed that straw mixed with hay horse dung has the highest potential of 235.4LCH4kgvs-1. Continuous mesophilic digestion was conducted for 238days using a single-stage UASS reactor (27L) and a two-stage UASS system with an anaerobic filter (AF, 21L). Increasing the organic loading rate (OLR) from 2.5 to 4.5gvsL-1d-1 enhanced the methane rate of the single-stage reactor from 0.262 to 0.391LL-1d-1 while the methane yield declined from 104.8to86.9Lkgvs-1. The two-stage system showed similar yields. Thus, for solid-state digestion of horse manure a single-stage UASS reactor appears sufficient.
AB - Aim of this study was to investigate the use of upflow anaerobic solid-state (UASS) digestion for treating horse manure. Biochemical methane potential (BMP) tests conducted for varying mixtures of dung (hay and silage feed) and bedding material (wheat straw, flax, hemp, wood chips) showed that straw mixed with hay horse dung has the highest potential of 235.4LCH4kgvs-1. Continuous mesophilic digestion was conducted for 238days using a single-stage UASS reactor (27L) and a two-stage UASS system with an anaerobic filter (AF, 21L). Increasing the organic loading rate (OLR) from 2.5 to 4.5gvsL-1d-1 enhanced the methane rate of the single-stage reactor from 0.262 to 0.391LL-1d-1 while the methane yield declined from 104.8to86.9Lkgvs-1. The two-stage system showed similar yields. Thus, for solid-state digestion of horse manure a single-stage UASS reactor appears sufficient.
KW - Anaerobic digestion
KW - Horse manure
KW - Methane
KW - Solid-state
KW - UASS
UR - http://www.scopus.com/inward/record.url?scp=84897666333&partnerID=8YFLogxK
U2 - 10.1016/j.biortech.2014.02.034
DO - 10.1016/j.biortech.2014.02.034
M3 - Article
C2 - 24583222
AN - SCOPUS:84897666333
SN - 0960-8524
VL - 158
SP - 111
EP - 118
JO - Bioresource technology
JF - Bioresource technology
ER -