Room: Poster Area
Date: Friday, 22 May 2026
Time: 13:45 - 14:45 CEST
Session code 1DV.6
Valorization of organic waste streams and residues into energy and materials
Valorization of Sewage Sludge into High-Value Hydrochar via Deep Eutectic Solvent-Assisted Hydrothermal Carbonization
Short Introductive summary
Integrating resource recovery and waste management approaches has been considered a promising strategy for advancing sustainability. Sewage sludge (SS), an inevitable byproduct of wastewater treatment, has garnered research interest due to its significant potential for resource recovery. Hence, this study aims to innovatively valorize the residue sludge (RS) obtained after the extraction of extracellular polymeric substances (EPS) from the SS, which are typically disposed of after EPS recovery. This is achieved using a promising approach, hydrothermal carbonization (HTC), catalyzed by a green solvent deep eutectic solvent (DES), with arginine as the hydrogen bond acceptor and butyric acid as the hydrogen bond donor, to obtain RS-derived carbon-rich hydrochar (RSHC) as a potential biobased product. Moreover, the HTC process was optimized using Response Surface Methodology (RSM) for variables including temperature (160-280 °C), time (45-150 min), and DES concentration (10-30 v/v%). This study will provide a new direction for the sustainable approach to the valorization of RS, aligning with the circular economy concept.
Presenter
Sadia BASRI
IIT Hyderabad, INDIA
Biographies and Short introductive summaries are supplied directly by presenters and are published here unedited
Co-authors:
T.K. Panda, IIT Hyderabad, INDIA
D. Bhattacharyya, IIT Hyderabad, INDIA
Session reference: 1DV.6.10