دورية أكاديمية
أعرض في EDS

Evaluation of the optimal sewage sludge pre-treatment technology through continuous reactor operation: Process performance and microbial community insights.

التفاصيل البيبلوغرافية
العنوان: Evaluation of the optimal sewage sludge pre-treatment technology through continuous reactor operation: Process performance and microbial community insights.
المؤلفون: Mitraka GC; Laboratory of Chemical & Environmental Technology, Department of Chemistry, Aristotle University of Thessaloniki, Thessaloniki GR-54124, Greece; Soil and Water Resources Institute, Hellenic Agricultural Organisation Dimitra, Thermi, P.O. Box 60458, Thessaloniki GR-57001, Greece., Kontogiannopoulos KN; Soil and Water Resources Institute, Hellenic Agricultural Organisation Dimitra, Thermi, P.O. Box 60458, Thessaloniki GR-57001, Greece., Zouboulis AI; Laboratory of Chemical & Environmental Technology, Department of Chemistry, Aristotle University of Thessaloniki, Thessaloniki GR-54124, Greece., Kougias PG; Soil and Water Resources Institute, Hellenic Agricultural Organisation Dimitra, Thermi, P.O. Box 60458, Thessaloniki GR-57001, Greece. Electronic address: p.kougias@swri.gr.
المصدر: Water research [Water Res] 2024 Jun 15; Vol. 257, pp. 121662. Date of Electronic Publication: 2024 Apr 22.
نوع المنشور: Journal Article
اللغة: English
بيانات الدورية: Publisher: Pergamon Press Country of Publication: England NLM ID: 0105072 Publication Model: Print-Electronic Cited Medium: Internet ISSN: 1879-2448 (Electronic) Linking ISSN: 00431354 NLM ISO Abbreviation: Water Res Subsets: MEDLINE
أسماء مطبوعة: Original Publication: Oxford, Pergamon Press.
مواضيع طبية MeSH: Sewage*/microbiology , Bioreactors* , Waste Disposal, Fluid*/methods, RNA, Ribosomal, 16S/genetics ; Methane/metabolism ; Fatty Acids, Volatile/metabolism ; Anaerobiosis ; Microbiota
مستخلص: This study investigated the impact of two low-temperature thermal pre-treatments on continuous anaerobic reactors' performance, sequentially fed with sludge of different total solids content (∼3 % and ∼6 %) and subjected to progressively increasing Organic Loading Rates (OLR) from 1.0 to 2.5 g volatile solids/(L Reactor ⋅day). Assessing pre-treatments' influence on influent sludge characteristics revealed enhanced organic matter hydrolysis, facilitating sludge solubilization and methanogenesis; volatile fatty acids concentration also increased, particularly in pre-treated sludge of ∼6 % total solids, indicating improved heating efficiency under increased solids content. The reactor fed with sludge pre-treated at 45 °C for 48 h and 55 °C for an extra 48 h exhibited the highest methane yield under all applied OLRs, peaking at 240 ± 3.0 mL/g volatile solids at the OLR of 2.5 g volatile solids/(L Reactor ⋅day). 16S rRNA gene sequencing demonstrated differences in the reactors' microbiomes as evidence of sludge thickening and the different pre-treatments applied, which promoted the release of organic matter in diverse concentrations and compositions. Finally, the microbial analysis revealed that specific foam-related genera increased in abundance in the foam layer of reactors' effluent bottles, dictating their association with the sludge foaming incidents that occurred inside the reactors during their operation at 2.0 g volatile solids/(L Reactor ⋅day).
Competing Interests: Declaration of competing interest The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper.
(Copyright © 2024 Elsevier Ltd. All rights reserved.)
فهرسة مساهمة: Keywords: Anaerobic digestion; Foaming; Microbial analysis; Pre-treatment methods; Sewage sludge
المشرفين على المادة: 0 (Sewage)
0 (RNA, Ribosomal, 16S)
OP0UW79H66 (Methane)
0 (Fatty Acids, Volatile)
تواريخ الأحداث: Date Created: 20240428 Date Completed: 20240527 Latest Revision: 20240527
رمز التحديث: 20240528
DOI: 10.1016/j.watres.2024.121662
PMID: 38678834
قاعدة البيانات: MEDLINE
الوصف
تدمد:1879-2448
DOI:10.1016/j.watres.2024.121662