2023/11/1/ · Herein, a cost-effective method for improving the anaerobic fermentation performance of sewage sludge (SS) is proposed. The highest volatile fatty acids (VFAs) reached up to 5550 mg COD/L with the supplementation of 0.2 g urea/g total suspended solids (TSS).
2022/10/1/ · The anaerobic acidogenic fermentation of food wastes and sewage sludge present different advantages: it is a flexible process as it can be performed under pure and
2024/1/2/ · Egypt faces significant challenges in managing its sewage sludge generated in large quantities from wastewater treatment plants. This study investigates the feasibility of utilizing sewage sludge as a renewable resource for hydrogen production through anaerobic digestion at the 100 L bioreactor level. Hydrogen is considered a promising alternative energy source due
2007/5/1/ · This study examined anaerobic fermentation of wastewater sludge, both original and pre-treated, by observing alterations in hydrogen and methane content utilizing a clostridium strain. The pre-treatments were studied to demonstrate their effects to
2009/9/16/ · Introduction –Primary Sludge Fermentation • PS Fermentation: –likely to have lower operational costs than supplementing external sources –provides required retention time & mixing for VFA production not likely in Anaerobic Zones 9/16/2009 PNCWA 2009 –Boise
2023/7/1/ · During sewage sludge anaerobic fermentation, the transfer of organic matter from the sludge phase to the liquid phase is the prerequisite for SCFAs production. One key reason for the low yield of SCFAs in the control was attributed to the poor solubilization efficiency.
2013/1/15/ · Acetate production during anaerobic sludge treatment has significant economic and environmental benefits. In this study, trophic links between syntrophic acetogens and homoacetogens in the anaerobic acidogenic fermentation of sewage sludge were investigated using methanogenic inhibitor 2-bromoethanesulfonate (BES) to block the methanogenesis
2025/1/1/ · Although not as relevant as for the waste production in households and manufacturing, wastewater management also generates organic wastes with representativeness for sewage sludge (SS) of 3.3% (around 16 kg dry matter per person per year) [2].
2018/11/1/ · Nonylphenol (NP) biodegradation under anaerobic conditions is difficult. Here, enhancement of anaerobic NP biodegradation mainly by regulating the role of acidogenic bacteria during anaerobic fermentation of waste activated sludge (WAS) for short-chain fatty acids
2020/1/1/ · Sewage sludge anaerobic fermentation for VFA production is evolved from sludge anaerobic digestion, in which the process of methanogenesis is inhibited. It is well known that the anaerobic digestion process of sewage sludge can be divided into three steps, namely hydrolysis, acidogenesis, and methanogenesis.
2022/12/1/ · The large amounts of waste activated sludge is a big issue for wastewater treatment plants, due to the high operation cost [16].In recent years, the application of anaerobic fermentation for production of volatile fatty acids (VFAs) has attracted increasing researches
2019/11/15/ · In this study, real sewage sludge was used as the solid-type complex substrate in a MES-AD system for its conversion to biogas (methane) during anaerobic fermentation process. The sludge was pretreated in a thermal autoclave to accelerate the rate-limiting step
2023/1/15/ · More recently, a one-stage anaerobic fermentation system was applied for MCFAs production from sewage sludge (Wu et al., 2021b). Nevertheless, the enhancement of MCFAs production efficiency in this system needs to be further studied.
2025/2/1/ · Choline chloride pretreatment on volatile fatty acids promotion from sludge anaerobic fermentation: Anaerobic co-digestion of sewage sludge, wine vinasse and poultry manure for bio-hydrogen production Int. J. Hydrogen Energy, 47 (2022), pp. 3667-3678, 10. ...
2023/9/1/ · A pilot equipment with a treatment capacity of 10 m 3 /d (Fig. S1) was built in the WWTP.On the basis of A 2 O process, an anaerobic fermentation acid production unit of excess sludge was added, which included two systems of sewage treatment and sludge acid production.
