Digestate-derived carbonized char and activated carbon: Application perspective

W Wang, JS Chang, DJ Lee - Bioresource technology, 2023 - Elsevier
The flourishment of anaerobic digestion (AD) on waste treatment emphasizes the
importance of digestate valorization, which plays an essential role in determining the …

Energy and economic assessment of hydrothermal-treatment-coupled anaerobic digestion

C Zhang, K Rahnuma, L Hou, X Liu, Y Tang… - … and Sustainable Energy …, 2024 - Elsevier
Hydrothermal treatment enhances biomethane (renewable energy source) production from
the anaerobic digestion of municipal sewage sludge but requires substantial energy (heat) …

Exploring hydrothermal liquefaction (HTL) of digested sewage sludge (DSS) at 5.3 L and 0.025 L bench scale using experimental design

SH Hegdahl, S Ghoreishi, C Løhre, T Barth - Scientific Reports, 2023 - nature.com
A common perspective within the prospect of a greener future is utilising our waste
materials. One waste material of which the world has abundant resources, and where we …

Integrating life cycle assessment and machine learning to enhance black soldier fly larvae-based composting of kitchen waste

MY Arshad, S Saeed, A Raza, AS Ahmad… - Sustainability, 2023 - mdpi.com
Around 40% to 60% of municipal solid waste originates from kitchens, offering a valuable
resource for compost production. Traditional composting methods such as windrow, vermi …

[HTML][HTML] Hydrolyzed sewage sludge as raw bio-based material for hermetic bag production

L Romero, S Weng, P Oulego, S Collado, I Marcet… - Waste Management, 2024 - Elsevier
This study aimed to assess the potential of sewage sludge, a significant residue of
wastewater treatment plants (WWTPs), as a sustainable resource for producing a bio-based …

[HTML][HTML] Hydrothermal processing of primary, waste-activated, and digested sewage sludge: Products characterisation, fate of heavy metals and nutrients, and process …

K Nahar, MH Marzbali, IG Hakeem, A Sharma… - Journal of Industrial and …, 2024 - Elsevier
Sewage sludges, such as primary sludge (PS), thickened waste-activated sludge (TWAS),
and digested sludge (DS), are generated at different stages during the wastewater treatment …

Machine learning predicts properties of hydrochar derived from digestate

W Wang, JS Chang, DJ Lee - Journal of the Taiwan Institute of Chemical …, 2025 - Elsevier
Background Hydrothermal carbonization (HTC) is a promising solution for digestate
valorization, and machine learning (ML) is a helpful tool for modeling hydrochar properties …

[HTML][HTML] Understanding the fate of nitrogen during catalytic hydrothermal liquefaction of sewage sludge

Y Fan, L Meyer, M Gong, B Krause, U Hornung… - Fuel, 2023 - Elsevier
In this study, the fate of nitrogen during catalytic hydrothermal liquefaction (HTL) of sewage
sludge (SS) is investigated using three different catalysts (CuNi/SiO 2, HCOOH, CuSO 4) …

Aqueous byproducts from biomass wet thermochemical processing: Valorization into fuels, chemicals, fertilizers, and biomaterials

MR Pelaez-Samaniego, SH Mood, JF Cisneros… - Energy Conversion and …, 2024 - Elsevier
Thermochemical pretreatments are employed prior to energy, chemicals, and fuels
production from biomass. Wet thermochemical processes (WTCP) are treatments used to …

Machine learning technologies for digestate-derived hydrochar yields

W Wang, JS Chang, DJ Lee - Process Safety and Environmental Protection, 2025 - Elsevier
Digestate is a promising precursor for hydrochar production, while composition complexity
makes hydrochar engineering challenging. Machine learning (ML) is a cost-effective tool for …