Schlederer, Felizitas

Felizitas Schlederer studied Chemical Engineering at the Technical University of Munich, where she focused during her master's in process engineering,...

Joined:

About Schlederer, Felizitas

Felizitas Schlederer studied Chemical Engineering at the Technical University of Munich, where she focused during her master's in process engineering, water and wastewater treatment. After her studies, she decided to join Céline Vaneeckhaute’s research group at Université Laval due to its close link with industrial research. Her PhD project focuses on removing pollutants from biosolids through pyrolysis, focusing on process optimisation. She is expecting to complete her PhD at the end of this year and is looking forward to upcoming projects in the environmental sector.

Schlederer, Felizitas

Titles from this speaker

Description: The Impact Of Process Parameters On The Amount Of Micropollutant In The Generated...

The Impact Of Process Parameters On The Amount Of Micropollutant In The Generated End Products During Sewage Sludge Pyrolysis

Abstract

The use of biochar from sewage sludge as a soil amendment requires ensuring a minimal and safe pollutant load. However, sewage sludge can contain various micropollutants such as PFAS, polyaromatic hydrocarbons (PAHs) and dioxins. Data is lacking to guarantee the purity of biochar, hence institutions such as the European Commission banned its application as a soil amendment in agriculture. This study aims to determine pyrolysis process parameters that ensure the production of safe biochar according to available regulations. Pilot-scale tests demonstrated that increasing the pyrolysis temperature and adding a carrier gas during pyrolysis and cooling stages reduce the amount of micro-pollutants in biochar. Additionally, biochemical methane potential tests of the aqueous pyrolysis liquid showed its suitability as a co-substrate for anaerobic digestion. Overall, the findings of this research highlight that pyrolysis can serve as a suitable process for transforming sewage sludge into valuable end-products.

Pyrolysis of sewage sludge can provide valuable end-products such as biochar, aqueous pyrolysis liquid, oil and gas phases. However, the use of biochar obtained from sewage sludge in agriculture is currently banned by the European Commission due to the uncertainty that it is free of pollutants. This work studies the optimal process parameters to reduce micro-pollutants in biochar using a pilot-scale pyrolysis plant. Moreover, the potential of APL as substrate for biogas production is assessed.

SpeakerSchlederer, Felizitas

Presentation time

14:30:00

14:50:00

Session time

13:30:00

15:00:00

SessionBehavior of Emerging Contaminants in Thermal Treatment Processes

Session locationRoom S503 - Level 5

TopicIntermediate Level, Microconstituents and Contaminants of Emerging Concern (Non-PFAS), PFAS

Author(s)

Schlederer, Felizitas

Author(s)F. Schlederer 1; F. Schlederer 1 ; E. Martín-Hernández 2; C. Vaneeckhaute 3;

Author affiliation(s)BioEngine Research Team on Green Process Engineering and Biorefineries, Department of Chemical Engineering, Université Laval, Québec, QC, Canada. CentrEau Water Research Center, 1065 Avenue de la Médecine, Québec, QC, Canada 1; BioEngine Research Team on Green Process Engineering and Biorefineries, Department of Chemical Engineering, Université Laval, Québec, QC, Canada. CentrEau Water Research Center, 1065 Avenue de la Médecine, Québec, QC, Canada 1 ; BioEngine Research Team on Green Process Engineering and Biorefineries, Department of Chemical Engineering, Université Laval, Québec, QC, Canada. CentrEau Water Research Center, 1065 Avenue de la Médecine, Québec, QC, Canada 2; BioEngine Research Team on Green Process Engineering and Biorefineries, Department of Chemical Engineering, Université Laval, Québec, QC, Canada. CentrEau Water Research Center, 1065 Avenue de la Médecine, Québec, QC, Canada 3;

SourceProceedings of the Water Environment Federation

Document typeConference Paper

PublisherWater Environment Federation

Print publication date Oct 2023

DOI10.2175/193864718825159083

Volume / Issue

Content sourceWEFTEC

Word count20

Base text size -

Schlederer, Felizitas

About Schlederer, Felizitas

My Recent Activity