Jun 12, 2023 · 8 Citations. Explore all metrics. Abstract. Adopting waste-to-wealth strategies and circular economy models can help reduce biowaste and add value. For instance, poultry farming is an essential source of protein, and chicken manure can be converted into renewable energy through anaerobic digestion.
May 2, 2023 · Anaerobic digestion of animal manure results in the production of renewable energy (biogas) and nutrient-rich biofertilizer. A further benefit of the technology is decreased greenhouse gas emissions that otherwise occur during manure storage.
This pretreatment consists of placing the biomass in a reactor with saturated steam under conditions of temperatures and pressure of 160–200 °C and 0.69–4.83 MPa, respectively [51]. Once the steam condenses and penetrates the pretreated biomass, it is suddenly depressurized.
Sep 15, 2021 · Current trends of livestock expansion and associated mass production of manure bring a net import of nutrients that have led to a significant excess in many areas. The implementation of an efficient and more economical technology solution to recover and re-use nutrients from raw or digested wastes is essential and will reduce the need for
Apr 19, 2023 · Before the 1980s, manure was the main input source for agricultural production in China; since then, chemical fertilizer inputs have greatly increased, whereas the proportion of manure input has
Animal manure is widely used as fertilizer to improve the fertility of cropland ( Parker and Li, 2006; Yao et al., 2010, 2013b ). In China, the total production of animal manure was 243 million tons in 2007 ( NBSPRC, 2010 ). In Maryland, one of the top manure producing regions in the United States, a survey revealed that the number of farmers
Manure Management☆ Amy L. Shober, Rory O. Maguire, in Reference Module in Earth Systems and Environmental Sciences, 2018 Trends in Manure Production. Manure production by species varies widely by region; for example production of goats, sheep, and cattle dominate in Africa (Table 1), cattle production is common in South America and production of all animal types is common in Asia (FAO, 2018).
Feb 2, 2020 · Therefore, some local inhabitants may utilise raw manure as fertiliser on farms to promote the growth of plants and crops; this is because animal manure is regarded as the oldest and a universal
Feb 10, 2022 · EM possess several useful characteristics in processes of stabilization of animal manure, among which are the fermentation of organic matter without the release of bad odors and its ability to convert toxic components (H 2 S) into non-toxic substances (SO 4) . This review discusses the most relevant research related to the nature of EM and how
Apr 1, 2024 · 2.2. Fermentation operation. The mixed sludge and chicken manure were fermented at different pH under the optimal dosage ratio. The pH was adjusted by appropriate dosage of 2 M hydrochloric acid (HCl) or 2 M sodium hydroxide (NaOH) to 3.0, 5.0, 7.0, 9.0 and 11.0, respectively.
Aug 29, 2018 · The estimated total manure nitrogen production increased from 21.4 TgN/year in 1860 to 131.0 TgN/year in 2014 with an overall significant increasing trend during 1860–2014 (0.7 TgN/year, p < 0.01) . Intensive animal production, therefore, can be significantly problematic with respect to waste storage and removal.
Mar 22, 2023 · Developing new uses and markets for manure may result in both economic and environmental benefits. The ERS report, Increasing the Value of Animal Manure for Farmers (AP-109, March 2023), uses data from the USDA Agricultural Resource Management Survey (ARMS) to describe current manure production, handling, storage, and use.
Waste activated sludge (WAS) and animal manure are two significant reservoirs of glucocorticoids (GCs) in the environment. However, GC degradation during anaerobic digestion (AD) of WAS or animal manure has rarely been investigated. In this study, co-fermentation of WAS and animal manure was conduct
Nov 12, 2018 · Impact of Livestock on Climate Change. The most important greenhouse gases from animal agriculture are methane and nitrous oxide. Methane, mainly produced by enteric fermentation and manure storage, is a gas which has an effect on global warming 28 times higher than carbon dioxide. Nitrous oxide, arising from manure storage and the use of
Jan 2, 2024 · Among the total number, during fermentation, 140 bacterial species (86%) increased in the solid samples with higher OM content; however, 122 bacterial species (75%) decreased in the liquid samples
