Anaerobic Digestion of Sewage Sludge with Grease Trap Sludge and Municipal Solid Waste as Co-Substrates
PBN-AR
Instytucja
Wydział Infrastruktury i Środowiska (Politechnika Częstochowska)
Informacje podstawowe
Główny język publikacji
en
Czasopismo
Environmental Research (45pkt w roku publikacji)
ISSN
0013-9351
EISSN
Wydawca
Elsevier
URL
Rok publikacji
2017
Numer zeszytu
Strony od-do
249-260
Numer tomu
Vol.155
Identyfikator DOI
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Autorzy
Pozostali autorzy
+ 3
Słowa kluczowe
en
sewage sludge
co-substrate
co-digestion
long chain fatty acids
methane yield
Streszczenia
Język
en
Treść
The feasibility of simultaneous treatment of multiple wastes via co-digestion was studied in semi-continuous mode at mesophilic conditions. The obtained results indicated that sewage sludge, organic fraction of municipal waste (OFMSW) and grease trap sludge (GTS) possess complementary properties that can be combined for successful anaerobic digestion. During the co-digestion period, methane yield and VS removal were significantly higher in comparison to digestion of sewage sludge alone. Addition of GTS to digesters treating sewage sludge resulted in increased VS removal and methane yield up to 13% (from 50 to 56.4) and 52% (from 300 to 456,547 m3 /Mg VSadd), respectively. While the use of OFMSW as the next co-substrate in the feedstock, can boost methane yield and VS removal up to 82% (300–547 m3 /Mg VSadd) and approximately 29% (from 50% to 64.7%), respectively. Moreover, the results of the present laboratory study revealed that the addition of cosubstrates to the feedstock had a significant influence on biogas composition. During the experiment methane content in biogas ranged from 67% to 69%. While, the concentration of LCFAs was increasing with the gradual increase in the share of co-substrates in the mixtures, wherein only the oleic acid was higher than some inhibition concentrations which have been reported in the literature. However, it did not significantly affect the efficiency of the co-digestion process.
Cechy publikacji
original-article
Inne
System-identifier
54244
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