Back to Search
Start Over
Greenhouse gas emissions in sludge ultrasonication followed by anaerobic digestion processes
- Source :
- Bioresource technology. 341
- Publication Year :
- 2021
-
Abstract
- This paper presents the greenhouse gas (GHG) emissions during ultrasonication of sludge and anaerobic digestion (AD) of the ultrasonicated sludge using mass-energy balance. Computation of the net energy (energy recovered - energy input) revealed that high solids concentration with low sonication specific energy provides positive net energy. Moreover, the GHG emissions can be minimised at low sonication specific energy input and high solids concentration compared to that of the control without sonication. Increase in temperature of sludge during sonication will reduce the energy input required for raising the sludge temperature to AD temperature and thus decreases the GHG emissions. With energy recovery from the methane produced in AD, the total GHG emissions can further be reduced, lower than that without energy recovery from methane.
- Subjects :
- Greenhouse Effect
Environmental Engineering
Sonication
Net energy
0207 environmental engineering
Bioengineering
02 engineering and technology
010501 environmental sciences
7. Clean energy
01 natural sciences
Methane
chemistry.chemical_compound
Greenhouse Gases
Specific energy
Anaerobiosis
020701 environmental engineering
Waste Management and Disposal
0105 earth and related environmental sciences
Energy recovery
Sewage
Renewable Energy, Sustainability and the Environment
General Medicine
Pulp and paper industry
Anaerobic digestion
chemistry
13. Climate action
Greenhouse gas
Environmental science
Subjects
Details
- ISSN :
- 18732976
- Volume :
- 341
- Database :
- OpenAIRE
- Journal :
- Bioresource technology
- Accession number :
- edsair.doi.dedup.....2b8ed2045c7afb69cce735770433520b