Jun 1, 2019 · Conclusions. This study assessed how the fermentation process of a specific waste mixture of urban origin could be optimized in terms of organic matter solubilisation and VFA production. For this work, a mixture composed by thickened WAS (65–70% v/v) and squeezed OFMSW (30–35% v/v) was used as renewable feedstock.
Composting or aerobic fermentation is an effective way to treat agricultural waste and produce organic fertilizer. Improving the application rate of organic fertilizer in soil needs time to reduce dependence on chemical fertilizers.
Sep 7, 2023 · The use of yeasts for the production of proteases has increased in demand in recent years. Y. lipolytica has been reported as a strain with high yields of protease production. This work aimed to evaluate the impact of pH and temperature on the production of proteases using Y. lipolytica in solid-state fermentation (SSF). Soybean, canola meal, cottonseed meal, and sesame meal wastes were used
Oct 1, 2012 · 2.2. Experimental setup. In both reactor types, the experiments were conducted continuously with increasing organic loading rates. Compared to fermentation with the CSTR, the organic loading rate of the FBR system was increased in larger steps over shorter periods based on the known characteristics of the reactor system as well as time constraints.
Aug 2, 2022 · Though, a numbers of commercial compost or bio-fertilizers are available in the market, however it is difficult to achieve fast and steady degradation rate, and this is mainly due to the substrate variations physicochemical and environmental conditions changes (Duan et al., 2019).
39.4.2.3 Fermentation of food wastes. The compositional variation is one of the challenges in food waste fermentation. Recently, Poe et al. (2020) studied the influence of compositional variation of food waste on butanol production through fermentation. They collected dining hall food waste weekly for 16 weeks.
Dec 1, 2022 · 1. Introduction. 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 and industrial interests [9], because the VFAs are stock chemicals and have a higher market price and a wider
Jan 31, 2024 · The fermentative assays for hydrogen production were carried out at the Laboratory of Biological Processes of the University of Sao Paulo (São Carlos, São Paulo, Brazil), in triplicate using 250 mL borosilicate flasks closed with butyl caps and plastic screws and equipped with valve set coupled to the butyl cap to collect liquid and gas samples.
Apr 1, 2024 · To restore the anaerobic environment, the bioreactors were flushed with pure N 2 before sealing, except the reactors for Batch#3, which were flushed with pure H 2.At regular time intervals (t = 0 h; 24 h; 48 h; 72 h; 144 h; 192 h), the reactors were sampled to perform the chemical characterization of the fermentation broth.
Jun 15, 2021 · 1. Introduction. Global energy demand is predicted to increase by as much as a third for the period 2013–2040 (Algapani et al., 2019).To date, about 88% of this demand is provided by reserves of fossil fuels which are expected to become depleted within a century and cause increased emissions of greenhouse gases (Algapani et al., 2019).
Apr 20, 2020 · The experiment was composed of two parts. One was the fermentation liquid production through food waste fermentation. The other one was the denitrification of simulated secondary wastewater using the produced fermentation liquid as carbon source.
Jan 1, 2018 · The commercial production of ethanol involves several steps: feedstock preparation, pretreatment, inoculum development, fermentation, and downstream processing. The following sections describe the unit processes involved in ethanol production, with a general process flow diagram presented in Fig. 5.4.
Feb 1, 2022 · VFAs are heavily involved in the organic carbon cycling on the planet (Myrto-Panagiota Zacharof and Lovitt, 2013a, 2013b), and the organic carbon recovered in the form of VFAs are the sustainable source and building blocks for the chemical industry (Andersen et al., 2015; Myrto-Panagiota Zacharof and Lovitt, 2013a, 2013b).
Jan 1, 2021 · 1. Introduction. With the development of society, people need more and more energy, which inevitably leads to the shortage of fossil fuels. In addition, the combustion of fossil fuels makes large amounts of greenhouse gas (i.e., carbon dioxide) release in the atmosphere, causing the climate change and global warming.
Jun 5, 2021 · Organic acids, e.g, citric acid, fumaric acid, lactic acid, malic acid, pyruvic acid and succinic acid, have important role in the food industry and are potential raw materials for the sustainable chemical industry. Their fermentative production based on renewable raw materials requires innovatively designed downstream processing to maintain low environmental impact and resource efficiency
