The conventional application of thermal pretreatment of sewage sludge has been to apply it prior to the anaerobic digestion. In this study, the thermal treatment of the digestate was assessed at lab-scale under several temperature and time conditions. Biochemical methane potential (BMP) tests were set up to evaluate the methane production kinetic by using the Gompertz modified and the first order equation. A full-scale digester evaluation was done by using the ADM1 model under different scenarios and by using the parameters drawn from the BMP tests. The best results were obtained at 180°C and 200°C both at 30min where an improvement of 50% in the methane yield in regards to raw digestate. Full-scale simulations show that a scenario with two anaerobic reactors with thermal inter-treatment would improve the methane production by 45% and 20% compared to conventional anaerobic digestion and pretreatments followed by anaerobic digestion, respectively.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1016/j.biortech.2016.04.049 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
The role of biodegradable plastics in lignite anaerobic digestion: Changes of organics transformation and metabolic pathway.
Bioresour Technol
December 2024
School of Energy Science and Engineering, Henan Polytechnic University, Jiaozuo 454000, China. Electronic address:
Biodegradable plastics (BPs) and lignite, both rich in organic matter, present significant challenges for efficient conversion into clean energy. This study examined the anaerobic co-digestion of BPs and lignite under controlled laboratory conditions. The results demonstrated that the co-digestion of polylactic acid (PLA) and lignite (at a 1:2 mass ratio, with 5 g PLA and 10 g lignite as the model system) rapidly acclimated to the anaerobic environment, enhancing cumulative biogas production by 57 % compared to the mono-digestion of lignite alone.
View Article and Find Full Text PDFAntibiotic resistome during two-stage partial nitritation/anammox process for sludge anaerobic digestion reject water treatment.
J Hazard Mater
December 2024
College of Environmental Science and Engineering, Institute of Carbon Neutrality, State Key Laboratory of Pollution Control and Resources Reuse, Tongji University, Shanghai 200092, China; Shanghai Institute of Pollution Control and Ecological Security, Shanghai 200092, China.
Anaerobic digestion (AD) reject water serves as a significant reservoir for antibiotic resistance genes (ARGs), underscoring the importance of understanding ARGs dynamics during treatment processes. Partial nitritation /anammox (PN/A) has become an increasingly adopted process, while comprehensive investigation on ARG behavior within this system, especially in full-scale, remains limited. This study explores the distribution of ARGs in a full-scale two-stage PN/A system, with an anaerobic/anoxic/oxic (AAO) system for comparison.
View Article and Find Full Text PDFGene abundance and microbial syntrophy as key drivers of anaerobic digestion revealed through 16S rRNA gene and metagenomic analysis.
Chemosphere
December 2024
School of Civil, Environmental and Architectural Engineering, Korea University, Seoul, South Korea. Electronic address:
Genes in microorganisms influence the biological processes in anaerobic digestion (AD). However, key genes involved in the four metabolic steps (hydrolysis, acidogenesis, acetogenesis, and methanogenesis) remain largely unexplored. This study investigated the abundance and distribution of key functional genes in full-scale anaerobic digesters processing food waste (FWDs) and municipal wastewater (MWDs) through 16S rRNA gene and shotgun metagenomic analysis.
View Article and Find Full Text PDFBiochemical conversion of municipal solid waste to biofuels and bioproducts: a review.
Environ Sci Pollut Res Int
December 2024
Biochemical Conversion Division, Sardar Swaran Singh National Institute of Bio-Energy, Kapurthala, Punjab, 144 603, India.
The disposal of municipal solid waste (MSW) in urban areas is a big issue nowadays in most of the countries. Developing countries like India are struggling with the continuous indiscriminate disposal of MSW due to rapid increase in the urbanization, industrialization, and human population growth. The mismanagement of MSW causes adverse environmental impacts, public health risks, and other socio-economic problems.
View Article and Find Full Text PDFMicrobial transitions and degradation pathways driven by butyrate concentration in mesophilic and thermophilic anaerobic digestion under low hydrogen partial pressure.
Bioresour Technol
December 2024
Civil Engineering, College of Science and Engineering, University of Galway, Galway H91 TK33, Ireland; Ryan Institute, University of Galway, Ireland; SFI MaREI Research Centre, University of Galway, Ireland. Electronic address:
Butyrate accumulation significantly affects the efficiency and stability of anaerobic digestion, while its specific impact on methane yield and butyrate degradation remains unclear. This study investigated how butyrate concentrations (2.0, 5.
View Article and Find Full Text PDFWant AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!