Abstract：
:The anaerobic co-digestion process in a continuous stirred-tank reactor (CSTR) was carried out under mesophilic conditions (37 ± 0.2 °C). All the trials were performed at a hydraulic retention time (HRT) of 15 days and the AD reactor was daily fed with a mixture of sewage sludge (SS) and elephant grass hydrolyzate (EGH). In this study, three different trials were assessed, with different mixture proportions of SSSS and EGH: F0 (100:0,v/v), F1 (75:25, v/v) and F2 (50:50, v/v), during 90 days each trial, keeping the organic loading rate (OLR) in a range of 0.94-1.16 g VS L(-1) day(-1). The experimental results obtained showed that the soluble chemical oxygen demand (SCOD) removal efficiency was around 77% and 86% for trials F1 and F2, respectively. SS co-digestion with EGH enhanced methane yield, leading to an increment between 23% and 38%, in comparison with the reference scenario (F0).
journal_name
J Environ Managejournal_title
Journal of environmental managementauthors
Carvalho AR,Fragoso R,Gominho J,Saraiva A,Costa R,Duarte Edoi
10.1016/j.jenvman.2016.06.012subject
Has Abstractpub_date
2016-10-01 00:00:00pages
48-53eissn
0301-4797issn
1095-8630pii
S0301-4797(16)30351-6journal_volume
181pub_type
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