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Effects of thermal pretreatment on the biomethane yield and hydrolysis rate of kitchen waste
Tsinghua University, Beijing, China.
Tsinghua University, Beijing, China.
Tsinghua University, Beijing, China.
Mälardalens högskola, Akademin för ekonomi, samhälle och teknik, Framtidens energi.ORCID-id: 0000-0002-6279-4446
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2016 (engelsk)Inngår i: Applied Energy, ISSN 0306-2619, E-ISSN 1872-9118, Vol. 172, s. 47-58Artikkel i tidsskrift (Fagfellevurdert) Published
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Abstract [en]

In this study, batch tests were performed to evaluate the effects of different thermal pretreatment temperatures (55-160 °C) and durations (15-120 min) on the anaerobic digestion of kitchen waste (KW). Two commonly used approaches, namely the modified Gompertz model and the approach developed by Koch and Drewes, were applied to assess the effects of the different pretreatment parameters on the biomethane yield, lag time and hydrolysis rate constant via data fitting. The subsequent anaerobic digestion of KW pretreated at 55-120 °C presented greater efficiency, and longer treatment durations resulted in increased methane production and higher hydrolysis rate constants. These findings were obtained due to the lower nutrient loss observed in KW treated at lower temperature treatments compared with that found with higher temperature treatments. In general, the effects of thermal pretreatment on the lag phase and hydrolysis rate differed depending on the treatment parameters leading to the variations in the KW compositions. The soundness of the two model results was evaluated, and higher statistical indicators (R2) were found with the modified Gompertz model than with the approach developed by Koch and Drewes. 

sted, utgiver, år, opplag, sider
2016. Vol. 172, s. 47-58
Emneord [en]
Anaerobic digestion, Hydrolysis rate, Kitchen waste, Methane, Thermal pretreatment
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URN: urn:nbn:se:mdh:diva-31425DOI: 10.1016/j.apenergy.2016.03.080ISI: 000376790400005Scopus ID: 2-s2.0-84961704475OAI: oai:DiVA.org:mdh-31425DiVA, id: diva2:919567
Tilgjengelig fra: 2016-04-14 Laget: 2016-04-14 Sist oppdatert: 2017-11-30bibliografisk kontrollert

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