2019/11/1/ · Sewage sludge (SS) alkaline fermentation (especially at pH 10) can efficiently enhance volatile fatty acids (VFAs) production. VFAs are considered an excellent carbon source for the biological nutrient removal (BNR) process. Dissolved organic matter (DOM) in fermentation liquid is the direct substrate used for producing VFAs and can
2024/2/29/ · The elevated activities of hydrolases evidently enhanced sludge hydrolysis by more than 50% with the addition of 15 g fermented food waste per 200 g sludge. The released organic matter presented much better biodegradability, of which the BOD 5 /COD (B/C) increased from 0.33 of the raw WAS to 0.41 of the pretreated sludge. Moreover,
Potassium dihydrogen phosphate (KH2PO4) Reagent-grade water. 34.0 g 500.0 mL. Preparation: Dissolve KH2PO 4 in 500 mL reagent-grade water. Adjust the pH of the solution to 7.2 with 1 N NaOH, and bring the volume to 1 L with reagent-grade water. Sterilize by filtration or autoclave at 121°C (15 PSI) for 15 minutes.
2022/10/1/ · MCFAs were produced from complex organics through two-stage fermentation process, i.e. acidification process and CE process. Fig. 1 A shows the acids formation in different fermentation groups during the acidification process. The mono-fermentation of sewage sludge achieved the highest cumulative acids production of
Here we investigate the transformation of antimony in view of biomethylation during sewage sludge fermentation as a case study for an anaerobic environment. Our approach was to identify if antimony methylation follows the Challenger pathway by using isotopically enriched antimonite (123Sb (v)). The antimony source was subjected to methylation
Electro-fermentation (EF) was combined with anaerobic fermentation (AF) to promote medium-chain fatty acid (MCFA) from sewage sludge. Results showed that EF at
2023/12/15/ · The self-heating of the fermentation controlled the temperature, and a 2-cm thick thermostatic water bath insulation layer was set up on the outer layer of the reactor to avoid excessive heat dissipation. Sewage sludge: Wheat straw: Seed
2024/4/22/ · There are many applications for the technology of producing hydrogen from organic waste. Due to its large volume, high organic content, and stable source, sewage sludge has gained significant attention among various organic wastes. The purpose of this paper is to present a bibliometric and technological study of hydrogen production
2023/1/1/ · 1. Introduction. Large amount of sewage sludge is every year produced in Europe by urban wastewater treatment plants (WWTPs) (12 million tons) (Bianchini et al., 2016; Nieto et al., 2021).Due to the grow of global population and the requirements of increasing wastewater treatment worldwide, the amount of sewage sludge is expected to
2019/8/9/ · The management of sewage sludge at wastewater treatment plants is a very important technical, economic and environmental issue. One of the popular environment-friendly of processing sludge is methane fermentation – a complex biochemical process through which organic matter present undergoes biochemical
2024/3/20/ · In common aerobic wastewater treatment such as the activated sludge process, the organic component of the wastewater is converted to biosolids or sludge. The commonly used disposal for sewage sludge are agricultural spreading, landfills, composting, anaerobic digestion, recycling as a construction material,
2024/4/1/ · Co-fermentation: Sewage sludge (from municipal WWTP) and algae: Ferrous (Fe 2+) ions: 600 mg/L Fe 2+ 7: 36: 5.24: 14.8: 1.87 times of control (Yin et al., 2021) Table 2. A detailed summary of the literature on the production of hydrogen from sewage sludge by different (excluding fermentation).
2024/2/1/ · Anaerobic fermentation is widely installed to recovery valuable resources and energy as CH 4 from waste activated sludge (WAS), and its implementation in developing countries is largely restricted by the slow hydrolysis, poor efficiency, and complicate inert components therein. In this study, enzyme-enhanced fermentation was …
2023/12/1/ · MCFAs synthesis from sewage sludge by anaerobic fermentation is a promising approach to treat sludge and recover energy, concurrently. This review …