Results 261 to 270 of about 874,863 (322)

Animal manures as feedstuffs: Cattle manure feeding trials

Agricultural Wastes, 1983
Abstract The utilisation of ‘as-collected’ and processed beef cattle and dairy cow manure, manure screenings and anaerobically digested cattle manures was evaluated on the basis of the results of feeding trials reported in the literature. The maximum level of incorporating these manures into animal feed rations, i.e.
John H. Martin, Raymond C. Loehr, Thomas E. Pilbeam   +2 more
openaire   +1 more source

Effect of Mixing on Biomethanation of Cattle-Manure Slurry

Environmental Technology, 2002
The benefits and extent of mixing required during biomethanation of cattle-manure slurry was studied by investigating the effect of: 1) continuous and intermittent mixing, 2) agitator impeller speed and position; 3) not providing assisted mixing; 4) mixing on production of extracellular polymeric substances; and 5) mixing on the ultimate anaerobic ...
Ong, H.K., Greenfield, P.F., Pullammanappallil, P.   +2 more
openaire   +5 more sources

Binary and ternary trace elements to enhance anaerobic digestion of cattle manure: Focusing on kinetic models for biogas production and digestate utilization.

Bioresource Technology, 2020
The effects of binary and ternary trace elements (TEs) (Fe/Co, Fe/Ni, and Fe/Co/Ni) on the anaerobic digestion (AD) of cattle manure were investigated using kinetic models (first-order, logistic, modified Gompertz, and Coats-Redfern) and experimental ...
Kaijun Wang, Si-Ning Yun, Tian Xing, Bingjie Li, Yasir Abbas, Xinming Liu   +5 more
semanticscholar   +1 more source

Co-combustion of textile dyeing sludge with cattle manure: Assessment of thermal behavior, gaseous products, and ash characteristics

, 2020
Not only can the incineration provide an effective waste stream reduction, but also it enhances the energy recovery. However, the combustion performance of textile dyeing sludge is poor due to its low combustible content and low calorific value.
Junhui Zhang, Guang Sun, Jingyong Liu, F. Evrendilek, Musa Buyukada   +4 more
semanticscholar   +1 more source

Effect of aeration rates on enzymatic activity and bacterial community succession during cattle manure composting.

Bioresource Technology, 2020
In order to explore changes in microbial enzyme activity and bacterial community, a 60-day composting experiment was conducted using cattle manure and straw under aeration rates of 0.45, 0.68, and 0.90 L min-1 kg-1 fresh weight.
Mian-Shen Ge, Hai-Bin Zhou, Yujun Shen, Hai-Bo Meng, Ran Li, Jun Zhou, Hongsheng Cheng, Xi Zhang, Jing-Tao Ding, Jian Wang, Jia-Rui Wang   +10 more
semanticscholar   +1 more source

Effect of hydraulic retention time on anaerobic co-digestion of cattle manure and food waste

, 2020
Anaerobic digestion of cattle manure has a low efficiency due to the high hydraulic retention time (HRT) required to degrade the abundant degradation-resistant compositions, co-digestion with food waste is effective at improving the methane production ...
Shao-Jie Bi, X. Hong, Hongzhi Yang, Xinhui Yu, Shu-Mei Fang, Yan-chen Bai, Jinli Liu, Ya-Mei Gao, Lei Yan, Wei-Dong Wang, Yan-Jie Wang   +10 more
semanticscholar   +1 more source

Techno-economic and environmental assessments for nutrient-rich biochar production from cattle manure: A case study in Idaho, USA

Applied Energy, 2020
Bioproducts from biomass feedstocks and organic wastes have shown great potential to address challenges across food-energy-water systems. However, bioproducts production is at an early, nascent stage that requires new inventions and cost-reducing ...
Ethan Struhs, Amin Mirkouei, Y. You, A. Mohajeri   +3 more
semanticscholar   +1 more source

Composting of Cattle and Pig Manure

Journal of Veterinary Medicine, Series B, 1993
SummaryStudies of solid manure treatment on 83 Swedish dairy farms showed that no composting process occurred in the majority of cases while high temperatures could be found in the manure in 27 of 34 piglet producing farms. It was found that at least 2.5 kg of straw per cow and day must be used to get a manure that can be composted without forced ...
openaire   +2 more sources

Survival of Leptospires in Cattle Manure

Journal of the American Veterinary Medical Association, 1971
SUMMARY Leptospires were selected as the study model for measurement of survival of pathogens in cattle manure. A laboratory model of a field oxidation ditch was developed and utilized. The studies were conducted under simulated field summer conditions. Leptospires survived in manure in Selas candles for 6 days, in the manure of the oxidation ditch for
openaire   +2 more sources

Physicochemical and structural characterization of biochar derived from the pyrolysis of biosolids, cattle manure and spent coffee grounds

Journal of the Energy Institute, 2020
In the framework of circular economy, the need of new feedstock materials for the production of alternative new products is of high priority. Biowastes such as manure, sewage sludge (biosolids, BS) and food-waste are used as raw materials for the ...
M. Stylianou, A. Christou, P. Dalias, P. Polycarpou, C. Michael, A. Agapiou, P. Papanastasiou, D. Fatta-Kassinos   +7 more
semanticscholar   +1 more source