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 …

Hydrothermal carbonization for energy-efficient processing of sewage sludge: A review

L Wang, Y Chang, A Li - Renewable and Sustainable Energy Reviews, 2019 - Elsevier
Hydrothermal carbonization is an important thermochemical conversion process that can be
used as an energy-efficient alternative to enhance the dewaterability of sewage sludge and …

Mechanisms, status, and challenges of thermal hydrolysis and advanced thermal hydrolysis processes in sewage sludge treatment

PL Ngo, IA Udugama, KV Gernaey, BR Young… - Chemosphere, 2021 - Elsevier
Sewage sludge management has garnered interest in both academia and industry due to
the challenges of overpopulation and its potential as a bioenergy source. Thermal hydrolysis …

Wastewater sludge stabilization using pre-treatment methods

M Anjum, NH Al-Makishah, MA Barakat - Process Safety and …, 2016 - Elsevier
The production and management of sludge in wastewater treatment plants is a significant
environmental issue. Sludge is a complex material, treated primarily by biological …

Developments in pre-treatment methods to improve anaerobic digestion of sewage sludge

P Neumann, S Pesante, M Venegas, G Vidal - Reviews in Environmental …, 2016 - Springer
During wastewater treatment, most organic matter is transferred to a solid phase commonly
known as sludge or biosolids. The high cost of sludge management and the growing interest …

Sulfate radical-based oxidation for sludge treatment: a review

C Liu, B Wu - Chemical Engineering Journal, 2018 - Elsevier
An ever-increasing amount of wasted activated sludge is the greatest challenge to
wastewater treatment plants on both the economic and environmental sides. Within the last …

A review of sludge pretreatment methods and co-digestion to boost biogas production and energy self-sufficiency in wastewater treatment plants

IV Junior, R de Almeida, MC Cammarota - Journal of Water Process …, 2021 - Elsevier
Regardless of the water sanitation infrastructure and the degree of water pollution
abatement that it could promote, the debate has intensified about the adaptation of sewage …

Combined electrical-alkali pretreatment to increase the anaerobic hydrolysis rate of waste activated sludge during anaerobic digestion

G Zhen, X Lu, YY Li, Y Zhao - Applied energy, 2014 - Elsevier
Pretreatment can be used prior to anaerobic digestion to improve the efficiency of waste
activated sludge (WAS) digestion. In this study, electrolysis and a commonly used …

Production and optimization of bamboo hydrochars for adsorption of Congo red and 2-naphthol

Y Li, A Meas, S Shan, R Yang, X Gai - Bioresource Technology, 2016 - Elsevier
Twelve hydrochars were produced from bamboo sawdust for adsorption of Congo red and 2-
naphthol. The bamboo hydrochars have Brunauer–Emmett–Teller (BET) surface areas …

Enhancement of methane production in mesophilic anaerobic digestion of secondary sewage sludge by advanced thermal hydrolysis pretreatment

JM Abelleira-Pereira, SI Pérez-Elvira, J Sánchez-Oneto… - Water research, 2015 - Elsevier
Studies on the development and evolution of anaerobic digestion (AD) pretreatments are
nowadays becoming widespread, due to the outstanding benefits that these processes …