A critical review of pretreatment technologies to enhance anaerobic digestion and energy recovery

MR Atelge, AE Atabani, JR Banu, D Krisa, M Kaya… - Fuel, 2020 - Elsevier
Biogas production from different waste resources still has limitations due to its complex
structure and slowly biodegradable nature. To improve methane yield and anaerobic …

Perspective on enhancing the anaerobic digestion of waste activated sludge

Y Xu, Y Lu, L Zheng, Z Wang, X Dai - Journal of Hazardous Materials, 2020 - Elsevier
Anaerobic digestion (AD) of waste activated sludge (WAS) is an important bio-energy
strategy that has been hindered by low conversion efficiency. This paper presents a …

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 …

Energy feasibility study of sludge pretreatments: a review

R Cano, SI Pérez-Elvira, F Fdz-Polanco - Applied Energy, 2015 - Elsevier
Most of the pretreatments to sewage sludge in lab-scale studies show high potentials to be
implemented in an anaerobic digester since they produce an increase in the biogas …

Cavitation-based pre-treatment of wastewater and waste sludge for improvement in the performance of biological processes: A review

AP Bhat, PR Gogate - Journal of Environmental Chemical Engineering, 2021 - Elsevier
Long treatment times, large quantity of sludge generation, inhibition of micro-organisms and
inability to degrade refractory pollutants are common disadvantages of biological treatment …

[HTML][HTML] Ultrasound-assisted biological conversion of biomass and waste materials to biofuels: A review

ZMA Bundhoo, R Mohee - Ultrasonics sonochemistry, 2018 - Elsevier
Ultrasound irradiation has been gaining increasing interests over the years to assist
biological conversion of lignocellulosic biomass and waste materials to biofuels. As such …

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 …

A comprehensive review on pretreatment methods for enhanced biogas production from sewage sludge

GC Mitraka, KN Kontogiannopoulos, M Batsioula… - Energies, 2022 - mdpi.com
The treatment of municipal wastewater is considered a cornerstone for the protection of
public health and environment. However, a major issue derived from this process is the …

Environmental and economic life cycle assessment of energy recovery from sewage sludge through different anaerobic digestion pathways

H Li, C Jin, Z Zhang, I O'Hara, S Mundree - Energy, 2017 - Elsevier
Anaerobic digestion is recognized as a good and promising method for energy recovery
from sewage sludge, but it is difficult to select a suitable process from various conventional …

Comparing the influence of low power ultrasonic and microwave pre-treatments on the solubilisation and semi-continuous anaerobic digestion of waste activated …

S Houtmeyers, J Degrève, K Willems, R Dewil… - Bioresource …, 2014 - Elsevier
Anaerobic digestion is a well-known technique for the recovery of energy from waste sludge.
Pre-treatment methods are useful tools to improve the biodegradability of the sludge and to …