TY  - CONF
N2  - Most of the anaerobic digesters in Indonesia are run under mesophilic conditions because the Indonesian climate is sufficiently pleasant to maintain mesophilic conditions easily. On the other hand, thermophilic anaerobic digestion offers an advantage of a much higher biogas production rate, although it needs more tedious control and energy supply to achieve the thermophilic temperature of 50-60°C. We run laboratory-scale experiments to compare the process performance of anaerobic digestion of bioethanol liquid waste (vinasse) at mesophilic and thermophilic conditions. Inoculum on this test using digested cow manure. Start-up was conducted with only the inoculum inside the reactors. After the reactor passed through the starvation period, the vinasse feeding was started. The hydraulic retention time (HRT) was gradually decreasing from 60, 42, until 30 days. Each step of HRT took 7 up to 14 days for stabilization. At the same HRT, thermophilic reactors produced biogas at the rate of four times faster than the mesophilic reactors. The methane concentration in the biogas for the thermophilic process was relatively the same as the mesophilic one. With such a higher rate of biogas production, the energy cost for thermophilic can be possibly better compensated. © 2020 IOP Publishing Ltd.
N1  - cited By 1; Conference of 1st International Conference on Environment, Sustainability Issues and Community Development, INCRID 2019 ; Conference Date: 23 October 2019 Through 24 October 2019; Conference Code:159006
KW  - Bioethanol; Biogas; Ethanol; Fertilizers; Sustainable development
KW  -  Biogas production rates; Hydraulic retention time; Mesophilic anaerobic digestion; Methane concentrations; Thermophilic anaerobic digestion; Thermophilic conditions; Thermophilic reactors; Thermophilic temperatures
KW  -  Anaerobic digestion
ID  - scholars13253
TI  - Comparison of Biogas Productivity in Thermophilic and Mesophilic Anaerobic Digestion of Bioethanol Liquid Waste
AV  - none
UR  - https://www.scopus.com/inward/record.uri?eid=2-s2.0-85083269147&doi=10.1088%2f1755-1315%2f448%2f1%2f012002&partnerID=40&md5=4d5f2e03d8542ad95942f7c8c3bd39b4
A1  - Wardani, N.A.
A1  - Afiqah, N.
A1  - Azis, M.M.
A1  - Budhijanto, W.
VL  - 448
Y1  - 2020///
SN  - 17551307
PB  - Institute of Physics Publishing
ER  -