Mar 1, 2002 · Straw-rich manure from organic pig farming systems can be composted in passively aerated systems as the high application of straw results in a compost bed with good structure and porosity. The passively aerated composting process was simulated in one-dimensional reactors of 2 m3 for straw-rich manure with compost bed densities of 1100, 700 and 560 kg m−3. Temperature profiles over the
Jul 23, 2013 · The decomposition of a pig manure and straw mix was investigated at temperatures between 10°C and 70°C using respirometric techniques. The oxygen concentrations in the reactor were measured continuously for about 4 days and then converted to hourly oxygen uptake rates for each incubation temperature, T. The specific oxygen uptake rate was
Mar 19, 2019 · The final GI of the cylindrical reactor with an airflow rate of 0.3 L min −1 kg −1 DM was 82.3%, whereas the GIs of the other compost reactors were below 80%. In this study, compost of a cylindrical reactor with a low aeration rate (0.3 L min −1 kg −1 DM) was more stable and mature than the other reactors.
Nov 1, 2017 · With the supply of fresh air into the composting reactor, O 2 concentration began to increase [25] (NZVI) addition during composting of pig manure (PM) was investigated. Different dosages of ...
Apr 1, 2014 · Three bulking agents, corn stalks, spent mushroom compost, and sawdust, were used in composting with pig manure in 60 L reactors with forced aeration for more than a month. Gas emissions were
Specifically, we performed a series of experiments using composting reactors to investigate the effects of SMS biochar on the physio-chemical properties of bio-fertilizer. Biochar was derived from dry SMS pyrolysed at 500°C and mixed with pig manure and rice straw.
Mix everything well and be sure to keep it moist (though not sodden) to start the decomposition action. At least once a month, head to your compost pile and turn it with a pitchfork. This will supply the compost with air, which is necessary to help get the microbes going. It will also further mix the ingredients, too.
Feb 1, 2004 · A reactor concept was developed for simultaneous treatment of separately collected liquid and solid fractions of pig manure. The liquid fraction is concentrated by evaporating the water using
Dec 1, 2023 · The role of protein shell (PS) amendment in altering the fungal community during pig manure (PM) composting was investigated. Six different dosages of PS based on the dry weight of PM (0 %, 2.5 %, 5 %, 7.5 %, 10 %, and 12 %; T1–T6, respectively) were mixed with wheat straw to make the initial feedstock and composted for 42 days.
Aug 5, 2020 · As the composting industry develops rapidly in the world, the compost producers have focused on the efficiency of energy utilization in production without restricting the quality of compost in the forced ventilation systems. Therefore, this experimental study quantified the impacts of initial C/N ratio on aeration requirement and energy consumption due to aeration for reactor composting of
Aug 1, 2018 · In this study, the effects of covering with a semi-permeable membrane during pig manure and wheat straw composting were investigated. Two laboratory-scale composting reactors were used: the membrane covered treatment (treatment A) and the control treatment (treatment B).
Nov 10, 2023 · Ge (2015, 2016) established the particle-scale modeling of the oxygen uptake rate model during pig manure–wheat straw composting. The model provides a theoretical basis for the design of an economical operation strategy for aerobic composting [17,18]. As the machine-learning model can explore the relationship between different parameters and
Feb 15, 2023 · In conclusion, adding 6% SSP to pig manure compost effectively reduces NH3 and CO2 emissions and improves compost quality. perature of the reactor. After composting started, ...