Anaerobic digestion for biogas production from municipal sewage sludge: a comparative study between fine mesh sieved primary sludge and sedimented primary sludgeAnaerobic digestion for biogas production from municipal sewage sludge: a comparative study between fine mesh sieved primary sludge and sedimented primary sludge Peer-Reviewed Journal Publication Δημοσίευση σε Περιοδικό με Κριτές 2023-04-042021enThis research was partially funded by the Erasmus Plus International Programme (2017-9/ΚA 107) (Contract No.: 017-1-EL01-KA107-035433), which funded the transportation and subsistence of Mr. Potlako Marumoloa to the Technical University of Crete.Two different types of primary sewage sludge have been used as feedstock for production of biogas through anaerobic digestion (AD): the one type was sludge from a typical primary clarifier (PC), while the other type of sludge produced by a rotating belt filter, commonly called microsieve (MS). Initially the main physicochemical characteristics of the sludges, such as total solids (TS), volatile solids (VS), VS/TS, pH and carbon to nitrogen ratio (C/N) were determined, for MS: 37.86 ± 0.08%, 83.00 ± 0.41%, 0.83 ± 0.00, 6.67 ± 0.08 and 19.68 ± 0.69, respectively, and for PC: 2.61 ± 0.08%, 78.77 ± 1.91%, 0.79 ± 0.02, 6.61 ± 0.10 and 14.46 ± 1.23, respectively. Then, calculated amounts of the sludges were inserted into airtight vials and were inoculated using anaerobic sludge. The daily biogas production was measured over a period of 30 days. PC sludge maximized the daily biogas production (44.20 mlbiogas/gvsd) 11 days after inoculation, while the MS sludge reach a peak (37.74 mlbiogas/gvsd) 14 days after inoculation. The cumulative biogas production over the 30 days of AD was in the same laver (442.29 mlbiogas/gvs for PC versus 434.73 mlbiogas/gvs for MS). However, PC sludge indicated higher daily biogas production, compared to MS sludge, while the opposite was observed for the period following the peak point. The Volatile Solids Reduction for PC and MS sludges was recorded as 46.06% and 32.39%, respectively.http://creativecommons.org/licenses/by/4.0/Water1324Odirile_et_al_Water_13(24)_2021.pdfChania [Greece]Library of TUC2023-04-04application/pdf3.2 MBfree Odirile Phillimon T. Marumoloa Potlako Marvin Manali Anthoula Μαναλη Ανθουλα Gikas Petros Γκικας Πετρος MDPI Anaerobic digestion Sewage sludge Biogas Primary clarifier Microsieve