نتایج جستجو برای: methane abatement strategies
تعداد نتایج: 417369 فیلتر نتایج به سال:
The purpose of this article was to study the economics of Sweden's scheme of 'multiple' arable nitrogen abatement instruments. A large-scale, spatially distributed mathematical programming model that linked changes in agricultural production practices to coastal nitrogen load was developed. Actual abatement policy induced 21% abatement. A rst-best solution to 21% abatement required increased co...
Methane emitted from ruminant livestock is regarded as a loss of feed energy and also a contributor to global warming. Methane is synthesized in the rumen as one of the hydrogen sink products that are unavoidable for efficient succession of anaerobic microbial fermentation. Various attempts have been made to reduce methane emission, mainly through rumen microbial manipulation, by the use of age...
Estimates of genetic/phenotypic covariances and economic values for slaughter weight, growth, feed intake and efficiency, and three potential methane traits were compiled to explore the effect of incorporating methane measurements in breeding objectives for cattle and meat sheep. The cost of methane emissions was assumed to be zero (scenario A), A$476/t (based on A$14/t CO equivalent and methan...
Methane is the second most abundant greenhouse gas (GHG), with nearly 60% of emissions derived from anthropogenic sources. Microbial conversion of methane to fuels and value-added chemicals offers a means to reduce GHG emissions, while also valorizing this otherwise squandered high-volume, high-energy gas. However, to date, advances in methane biocatalysis have been constrained by the low-produ...
work evaluating nutritional mitigation strategies. However, much of this work has been conducted on a small scale using intensive techniques such as respiration chambers or head boxes. Therefore, a method of gas collection and analysis was developed to allow evaluation of methane emissions by a large number of growing cattle under conditions that more closely mimic a production setting. The obj...
This paper deals with the design of equilibrium solutions with coupled constraints in dynamic games of greenhouse gas (GHG) emissions abatement. Self enforcing International Environmental Agreements (IEA) among different groups of countries call for Nash equilibrium solutions when the abatement strategies of the countries are defined. In this paper we study the effect of having another party, l...
Nitrogen losses in the form of Nitrate (N-NO3) from point and diffuse sources of pollution are recognized to be the leading cause of water body impairment throughout Europe. Implementation of conservation programs is perceived as being crucial for restoring and protecting the good ecological status of freshwater bodies. The success of conservation programs depends on the efficient identificatio...
introduction sarcheshmeh copper mine is regarded as the second largest copper deposit in the world. this is one of the largest industrial-mining complexes in the world and the largest producer of copper in iran. this complex plays an important role in iran’s economy. in 2012, this complex created employment for about 8000 people in iran and produced 203065 tons of copper cathodes. however, high...
Industrial sectors account for around 70% of the total energy-related CO2 emissions in China. It is of great importance to measure the potential for CO2 emissions reduction and calculate the carbon price in industrial sectors covered in the Emissions Trading Scheme and carbon tax. This paper employs the directional distance function to calculate the marginal abatement costs of CO2 emissions dur...
This paper reviews existing on-farm GHG accounting models for dairy cattle systems and their ability to capture the effect of dietary strategies in abatement. The focus is on methane (CH4) emissions from enteric manure (animal excreta) sources nitrous oxide (N2O) animal excreta. We identified three generic modelling approaches, based degree which diet-related characteristics: ‘none’ (Type 1) ‘s...
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