A review on wastewater sludge valorisation and its challenges in the context of circular economy

A Gherghel, C Teodosiu, S De Gisi - Journal of cleaner production, 2019 - Elsevier
The use of wastewater sludge as a source for energy and resource recovery is a good
alternative for its management considering the legislation requirements and the circular …

[HTML][HTML] Characterization of humic substances recovered from the sewage sludge and validity of their removal from this waste

J Michalska, J Turek-Szytow, A Dudło… - EFB Bioeconomy …, 2022 - Elsevier
Being an inevitable byproduct of the operation of wastewater treatment plants (WWTPs),
sewage sludge may cause serious environmental problems. Thus, the proper treatment and …

Mechanistic insights into the effects of biopolymer conversion on macroscopic physical properties of waste activated sludge during hydrothermal treatment: Importance …

Q Wang, Q Xu, Z Du, W Zhang, D Wang… - Science of the Total …, 2021 - Elsevier
In this study, the molecular transformation of sludge biopolymers during hydrothermal
treatment with the temperature ranging from 25° C to 200° C was examined and was seen to …

Investigation on hydrochar and macromolecules recovery opportunities from food waste after hydrothermal carbonization

D Gupta, SM Mahajani, A Garg - Science of The Total Environment, 2020 - Elsevier
In this paper, the performance of hydrothermal carbonization (HTC) was investigated on real
food waste (FW) to improve resource recovery opportunities. The HTC was performed in a …

Hydrothermal carbonization of centrifuged sewage sludge: Determination of resource recovery from liquid fraction and thermal behaviour of hydrochar

M Malhotra, A Garg - Waste Management, 2020 - Elsevier
Safe disposal of the sludge generated from sewage treatment plant is a major challenge
worldwide. Hydrothermal carbonization (HTC) is considered a potential pretreatment …

Inhibition of Maillard reaction during alkaline thermal hydrolysis of sludge

N Yang, S Yang, X Zheng - Science of The Total Environment, 2022 - Elsevier
The Maillard reaction (MR) occurs during the alkaline thermal hydrolysis (ATH) of sludge,
which affects the quantity and quality of recovered protein. In this paper, four different sulfites …

Proteins recovery from waste activated sludge by thermal alkaline treatment

W Hui, J Zhou, R ** - Journal of Environmental Chemical Engineering, 2022 - Elsevier
Extracellular polymeric substances (EPS) are the major organic component of waste
activated sludge (WAS), and proteins are the dominant organic component of EPS. To …