Title:
Sewage Sludge Physico-chemical Characterization: Identification of a Multi-component Model Mixture for Supercritical Water Gasification
Author(s):
Francillon, J., Marotta, M., Roubaud, A., Demey, H.
Document(s):
Paper
Poster
Abstract:
Valorization and recycling of industrial and urban wastewater streams is a major concern in EU today. It represents a large and geo-available resource in EU and can become an opportunity to produce renewable energy. This work presents an exhaustive characterization of organic & inorganic matter of activated and digested sewage sludges from French wastewater treatment plants, compared to the EU literature and regulation for spreading and composting. Thus determining their potential use for methane production by supercritical water gasification (SCWG). Results show overall inorganic and organic pollutants content under EU limit values, excepted for phenolic and halogenated compounds. Within at least 65% of organic matter in both sludges, amino acids, lignin units and fatty acids can mainly serve as model compounds, as proteins, lignin and lipids represent more than 80% of organic matter. Significant amount of ashes (30% of total dry matter) and metals (15% of total dry matter) should be removed in a salt separator building block before SCWG to avoid pumps damaging (3 to 7% of Si in dry matter) and reactor clogging., as well as micro and macronutrients (N, P, Ca, K,S), representing between 10 to 12% of dry matter, to be valorized.
Keywords:
sewage sludge, supercritical water gasification, wastewater treatment, renewable energies, carbon circular economy, analytical chemistry
Topic:
Biomass Conversion to Intermediate Bioenergy Carriers and Sustainable Biofuels
Subtopic:
Hydrothermal processing
Event:
32nd European Biomass Conference and Exhibition
Session:
5CV.1.11
Pages:
772 - 774
ISBN:
978-88-89407-24-0
Paper DOI:
10.5071/32ndEUBCE2024-5CV.1.11
Price:
FREE
