Jun 22, 2024 · This difference in duration may be attributed to the respective compositional properties of cow and sheep manure affecting fermentation efficiency. Comparatively, whole sheep manure, sheep manure mixed 1:1 with cow manure, and sheep manure mixed 1:2 with cow manure followed each other in their respective complete putrefaction cycles.
Apr 4, 2017 · Request PDF | Dry anaerobic digestion of cow manure and agricultural products in a full-scale plant: Efficiency and comparison with wet fermentation | For years, anaerobic digestion processes have
Feb 10, 2021 · These strategies comprise 1) co-digestion; 2) pretreatment; 3) introduction of additives (trace metals, carbon-based materials, low-cost composites, nanomaterials, and microbial cultures); 4) innovative systems (bio-electrochemical fields and laser irradiation).
Oct 8, 2020 · Recently, dry anaerobic co-digestion is one of the mechanisms which have been increasingly used to improve the reactor’s performance for treating livestock manure with agricultural crop residues. Due to carbohydrate, protein and lipid existing in agricultural wastes, biogas yield decreased with higher reactor volume when using wet anaerobic digestion. In this regard, the aim of this work was
Nov 17, 2023 · Findings suggested that renewable energy transfer system in the form of biogas plant was successful in converting cow dung into energy and nutrient rich organic fertilizer, which reduced the
Jul 2, 2017 · It could be observed from the data that the volume of biogas production was higher in the cow slurry (39.50ml), followed by combined slurry (20.30ml) and then fowl slurry (15.30ml). The proximate and microbial composition of the cow dung may explain reasons for the bioefficacy of the cow dung thus justifying its usage.
Mar 22, 2022 · Lignocellulose degradation (LCD) was the key factor limiting the development of anaerobic fermentation (AF) by the cow dung (CD). In the research, the effects of cellulase pretreatment (CP) and microvoltage (MV) alone and combination on the gas production and LCD during the AF were investigated. The results showed that both CP and MV had an significant effect on the AF, though the synergistic
Dec 1, 2023 · Biogas production had previously been regarded as the most advantageous method of digesting cow dung. This study examines the energy, economic, and environmental advantages of biogas produced from cow dung if it were to replace coal-powered electricity and LPG in Indonesia.
Oct 7, 2016 · The importance of nickel (added as NiCl2) on mesophilic anaerobic fermentation of Phragmites australis straw and cow dung was demonstrated by investigating the biogas properties, pH values, organic matter degradation [chemical oxygen demand (COD)] and enzyme activities (cellulase, protease and dehydrogenase) during the fermentation process. The results showed that Ni2+ addition increased the
While foregut fermentation is generally considered more efficient, and monogastric animals cannot digest cellulose as efficiently as ruminants, [5] hindgut fermentation allows animals to consume small amounts of low-quality forage all day long and thus survive in conditions where ruminants might not be able to obtain nutrition adequate for their needs.
Aug 1, 2023 · The cow manure was collected from a local dairy farm in Lanzhou, China. The total solid (TS) and volatile solid (VS) of cow manure was measured. Cow manure samples were used as AD substrates. The batch reactors were 250 mL glass bottles with a working volume of 200 mL. The cow manure substrate itself was used as the inoculum in the AD system.
Apr 1, 2014 · Among these substrates, Cow dung was the densest followed by Poultry dropping while Lemon grass has the lowest in terms of total solid content. Also, great variation was found in the volatile solids content of the three substrates; while Cow dung and Poultry dropping have values close to each other, Lemon grass recorded very low value.
Efficient conversion of wheat straw wastes into biohydrogen gas by cow dung compost was reported for the first time. Batch tests were carried out to analyze influences of several environmental factors on biohydrogen production from wheat straw wastes. The performance of biohydrogen production using
Jan 1, 2021 · The effect of substrate (food waste and cow dung) and inoculum (sludge solution) ratio on the hydrogen fermentation is experimentally investigated in this study. Five reactors are prepared using various ratios of substrate and inoculum on volume basis and the hydrogen (H 2 ) and carbon dioxide (CO 2 ) generation is observed for 15 days.
Feb 9, 2016 · The effect of ferrous (added as FeCl2) on the anaerobic co-digestion of Phragmites straw and cow dung was studied by investigating the biogas properties, pH values, organic matter degradation (COD) and enzyme activities (cellulase, protease and dehydrogenase) at different stages of mesophilic fermentation. The results showed that Fe2+ addition increased the cumulative biogas yields by 18.1 %