Anthropogenic greenhouse gas (GHG) emissions have become significant environmental indicators in analyzing the comparative environmental impacts of conventional and newly developed alternative systems or techniques. Life Cycle Assessment (LCA) is considered an accepted and systematic methodology to calculate the amount of carbon released from all the processes of a system/technique, helping use...

As the major source of greenhouse gas (GHG) emission, cities have been under tremendous pressure of energy conservation and emission reduction for decades. Community is the main unit of urban housing, public facilities, transportation, and other properties of city's land use. The construction of low-carbon community is an important pathway to realize carbon emission mitigation in the context of...

The objective of this research was to ascertain if 1) baseline emission and 2) damage induced emission of volatile plant substances could be detected under greenhouse conditions. A laboratory method was validated for analysing the air in a semi-closed greenhouse with 44 m floor area. This greenhouse, with a volume of 270 m, was climate controlled and light was supplied with assimilation lamps. ...

Equipment- and site-level methane emissions from 45 compressor stations in the transmission and storage (T&S) sector of the US natural gas system were measured, including 25 sites required to report under the EPA greenhouse gas reporting program (GHGRP). Direct measurements of fugitive and vented sources were combined with AP-42-based exhaust emission factors (for operating reciprocating engine...

Biogas and bio-methane that are based on energy crops are renewable energy carriers and therefore potentially contribute to climate protection. However, significant greenhouse gas emissions resulting from agricultural production processes must be considered. Among those, the production and use of fertilizer, and the resulting leaching of nitrous oxide (N2O) are crucial factors. This paper provi...

GHG emission reduction is one of the key environmental problems for the sustainable development discussion in the 21st century, because it is closely related to energy use and bulk material flows. Concrete and binding targets for reduction of greenhouse gas (GHG) emissions for Annex-1 countries are now agreed to in the Kyoto protocol. Emissions in the European Union will be reduced by 8% in the...

Waste management practices can impact greenhouse gas (GHG) emissions by affecting energy consumption, methane generation, carbon sequestration, and non-energy-related manufacturing emissions. This paper examines GHG emissions and sinks, from a life-cycle perspective, for selected paper, glass, metal, and plastic materials comprising about one-third of municipal solid waste (MSW) generated in th...

Since the signing of the Kyoto Protocol, a major e€ort has been launched in Canada to identify cost-e€ective measures to reduce greenhouse gas (GHG) emissions. Agriculture is an important contributor of methane and nitrous oxide in Canada. Over one-third of methane and almost four-®fths of nitrous oxide emissions are from agriculture either directly or indirectly. By 2010 primary agricultural p...