The emission of greenhouse gases (GHG) during feedlot manure composting reduces the agronomic value of the final compost and increases the greenhouse effect. A study was conducted to determine whether GHG emissions are affected by composting method. Feedlot cattle manure was composted with two aeration methods--passive (no turning) and active (turned six times). Carbon lost in the forms of CO2 ...

The production of biogas from six agricultural crops was analysed regarding energy efficiency and greenhouse gas (GHG) performance for vehicle fuel from a field-to-tank perspective, with focus on critical parameters and on calculation methods. The energy efficiency varied from 35% to 44%, expressed as primary energy input per energy unit vehicle gas produced. The GHG reduction varied from 70% t...

This paper analyzes different policies that may promote the transition to sustainability, with particular focus on the energy sector. We present a dynamic simulation model where three different strategies for sustainability are identified: reduction in GHG emissions, improvements in energy efficiency and the development of the renewable energy sector. Our aim is to evaluate the dynamics that th...

Requirements for mitigation of the continued increase in greenhouse gas (GHG) emissions are much needed for the North China Plain (NCP). We conducted a meta-analysis of 76 published studies of 24 sites in the NCP to examine the effects of natural conditions and farming practices on GHG emissions in that region. We found that N2O was the main component of the area-scaled total GHG balance, and t...

Deforestation and forest degradation in the tropics is a major source of global greenhouse gas (GHG) emissions. The tropics also harbour more than half the world's threatened species, raising the possibility that reducing GHG emissions by curtailing tropical deforestation could provide substantial co-benefits for biodiversity conservation. Here we explore the potential for such co-benefits in I...

The proper selection of treatment technologies may be an important opportunity for contributing to the reduction goals of greenhouse gases (GHG) emissions. Based on actual Mexican infrastructure data, the scenarios analyzed in this work show that the emission reduction from sewage treatment in Mexico could be as high as 34% if compared to the baseline scenario, depending on the treatment techno...

Energy conservation and greenhouse gas (GHG) abatement have been included in the national development strategy of China, however, the rigidity in command-and-control, absence of market-mechanism and arbitrariness in assignment of abatement burden across regions have caused unnecessary losses in both economic efficiency and social equity. In this paper, we established an Inter-Regional CGE model...

The use of recycling techniques in pavement construction offers significant benefits of resource conservation and emission reduction. While the environmental benefits are generally considered as business expenses, a new trend is to turn sustainable construction into profit. By generating financial revenue via carbon trading mechanism, asphalt producers and road builders can compensate their sus...

To facilitate the efforts to identify greenhouse gas (GHG) and criteria air pollutants (CAP, representing CO, VOC, NOx, SOx, PM10 and PM2.5) emission-reduction opportunities that may be specific to particular regions, this paper intends to estimate regional differences in life-cycle GHG and CAP emissions from light-duty vehicles in the US, using the GREET (the Greenhouse gases, Regulated Emissi...

We develop a two-region partial equilibrium model of the global market for liquid fuel and analyze different policies, such as biofuel mandate, emission standard, and fuel carbon tax. We rank these policies under different criteria, such as greenhouse-gas (GHG) emissions, expenditure on fuel imports, the impact on fuel consumers and producers, the quantity of biofuel, etc. Our analysis suggests...