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Title: Optimization of anaerobic co-digestion of sewage sludge with fruit and vegetable wastes (FVW): Methane production potential, process performance and stabilized sludge quality
Other Titles: Meyve ve sebze atiklari ile anaerobik çoklu aritma çamuru çürütme optimizasyonu (MSA): Metan üretim potansiyeli, proses performansi ve stabilize çamur kalitesi
Authors: Sarıkaya, Fatmanur
Erdirençelebi, Dilek
Keywords: Anaerobic co-digestion
Fruit and vegetable waste
Primary sludge
Secondary sludge
Sewage sludge
Anaerobic digestion
Sewage sludge
Sludge digestion
Anaerobic co-digestion
Fruit and vegetable waste
Methane production
Organic loading rates
Primary sludge
Secondary sludge
Sludge quality
Vegetable wastes
Waste vegetable
Issue Date: 2022
Publisher: Gazi Universitesi
Abstract: Anaerobic co-digestion performance and stabilized sludge quality were investigated with fruit and vegetable wastes in semi-continuous lab-scale reactors for primary (PS), secondary (SS) and mixed sludge (MS) fractions at organic loading rates (OLRs) of 1.65, 0.40 and 1.0 kg VS/, respectively, at 35°. Fruit waste (FW), vegetable waste (VW) or fruit+vegetable waste (FVW) fractions were added as co-substrates at different OLR combinations. Optimum OLR values were 0.84, 0.33-0.44 and 1.18 g VS/ at %51, 209 and 84% (w:w) respectively for FW, VW and FVW, resulting in increases at 50-75, 250-300 ve 44-66% in daily methane production. Increase in OLRs led to decrease in methane yield and hydrolysis degree in the FW receiving digester whereas a toxic effect took place in VW feeding, especially on methanation with an irreversible pattern in PS co-digestion. VW exhibited a higher biodegradegradability than FW with a higher methane yield while pH was lowered in FW co-digestion.The results showed that co-digestion at low OLRs was beneficial in obtaining higher methane recovery while stabilized sludge worsened in dewatering ability. Stabilized SS gained a suitable level of electrical conductivity and nutrient content for soil application through higher conversion to microbial biomass. © 2022 Gazi Universitesi Muhendislik-Mimarlik. All rights reserved.
ISSN: 1300-1884
Appears in Collections:Mühendislik ve Doğa Bilimleri Fakültesi Koleksiyonu
Scopus İndeksli Yayınlar Koleksiyonu / Scopus Indexed Publications Collections
TR Dizin İndeksli Yayınlar Koleksiyonu / TR Dizin Indexed Publications Collections
WoS İndeksli Yayınlar Koleksiyonu / WoS Indexed Publications Collections

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