Publication: Enhancement of anaerobic digestion of Cellulosic fraction in cassava production wastewater by Microaeration
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Issued Date
2014
Resource Type
File Type
application/pdf
ISSN
22839216
Other identifier(s)
2-s2.0-84908087337
Rights Holder(s)
มหาวิทยาลัยศรีนครินทรวิโรฒ
Bibliographic Citation
Chemical Engineering Transactions. Vol 39, No.Special Issue (2014), p.553-558
Suggested Citation
Khongsumran O., Intanoo P., Rangsunvigit P., Chavadej S., Leethochawalit M. Enhancement of anaerobic digestion of Cellulosic fraction in cassava production wastewater by Microaeration. Chemical Engineering Transactions. Vol 39, No.Special Issue (2014), p.553-558. doi:10.3303/CET1439093 Retrieved from: https://hdl.handle.net/20.500.14740/6305
Abstract
Effects of microaeration on the anaerobic digestion of cassava wastewater with added cassava residue in the continuous stirred tank reactor (CSTR) system were studied. The CSTR system was operated at ambient temperature. The biogas was analysed for the production rate and compositions by a gas meter and gas chromatography (GC), respectively. In addition, the overflown liquid effluent was collected and analysed for chemical characteristics. Operating parameters were varied to achieve the optimum chemical oxygen demand (COD) loading rate, the maximum content of added cassava residue, and the optimum oxygen dosing on the degradation of the cellulosic fraction. The COD loading rate was varied from 0.604 to 2.500 kg/m3 d to determine the optimum COD loading rate without oxygen supply. The results showed that with the optimum COD loading rate of 1.710 kg/m3 d, the generated gas mainly composed of 74.42 % CH4 and 18.43 % CO2 with negligible amounts of nitrogen and oxygen. The addition of a small amount of oxygen played an important role in the methane production. Copyright © 2014, AIDIC Servizi S.r.l.
Subject(s)
Anaerobic digestion
Carbon dioxide
Chemical oxygen demand
Chromatography
Effluents
Energy conservation
Gas chromatography
Nitrogen
Oxygen
Oxygen supply
Plants (botany)
Pollution
Cassava wastewater
Chemical characteristic
COD loading rate
Continuous stirred tank reactor
Liquid effluents
Methane production
Operating parameters
Production rates
Loading
Carbon dioxide
Chemical oxygen demand
Chromatography
Effluents
Energy conservation
Gas chromatography
Nitrogen
Oxygen
Oxygen supply
Plants (botany)
Pollution
Cassava wastewater
Chemical characteristic
COD loading rate
Continuous stirred tank reactor
Liquid effluents
Methane production
Operating parameters
Production rates
Loading