Search results for " gas emission"
showing 10 items of 38 documents
Carbon efficiency analysis in the provision of drinking water : Estimation of optimal greenhouse gas emissions
2023
Producción Científica
Managing Greenhouse Gas Emissions for Airport Inventories: An Overview
2011
For some years now, problems relating to gas emissions that affect climate and result from human activities have assumed a global dimension of large importance. The climate is, indeed, influenced by the concentrations of some pollutants in the atmosphere; these pollutants trap the long wave radiation emitted by the Earth and alter the energy balance, causing an accentuation of the natural greenhouse effect. In this view an inventory of greenhouse gases can become the benchmark against which to measure the achievement of quantitative targets set at the political level in the fight against climate change. Contrary to a general inventory of emissions related with air quality objectives and loc…
SOIL FERTILITY, GREENHOUSE GAS EMISSIONS AND AGRONOMIC PERFORMANCE IN A VINEYARD WITH DIFFERENT SOIL MANAGEMENT IN A SEMIARID MEDITERRANEAN ENVIRONME…
2017
In the semiarid Mediterranean environment, vineyard soils are often characterised by intensive tillage and large supply of inorganic fertilizers. Those practices, coupled with the semiarid Mediterranean climate features (warm to hot, dry summers and mild, wet winters),speed up the mineralisation of soil organic matter (SOM) so that many lands have lost much fertility. To counteract SOM decline, the introduction of cover crops with or without nitrogen (N) fixing forage legumes, has become a management technique widely used. Indeed, cover crops besides increasing SOM and potentially mineralisable N, it can mitigate soil erosion in sloping vineyards. However, the competition risk for soil wate…
Sensitivity and uncertainty analysis of a plant-wide model for carbon and energy footprint of wastewater treatment plants
2014
This paper presents the sensitivity and uncertainty analysis of a mathematical model for Greenhouse gas (GHG) and energy consumption assessment from wastewater treatment plants (WWTPs). The model is able to simultaneously describe the main biological and physical-chemical processes in a WWTP. Specifically, the mathematical model includes the main processes of the water and sludge lines influencing the methane (CH4), nitrous oxide (N2O), and carbon dioxide (CO2) emissions. Further, the process energy demand and the energy recovery are also taken into account. The main objective of this paper is to analyze the key factors and sources of uncertainty influencing GHG emissions from WWTP at a pla…
Sustainable development in urban transport: Feasibility study for a plant to produce and store hydrogen from wind energy in the urban transport in We…
2005
ECO-PROFILES OF INNOVATIVE ENERGY SYSTEMS FOR DOMESTIC AND RESIDENTIAL APPLICATIONS
2015
The exponential growth of distributed generation systems (mainly from solar energy through the use of photovoltaic) and the new release on energy markets of new generation technologies, with smaller dimension, are pushing towards rethinking energy systems. "Smart buildings" with the capacity to produce, store and manage flow of information's and energy will become the milestone of the future distribution networks (smart buildings to smart grid). The goal of this study is to evaluate the ecoprofile of 1 kWh of electricity, selected as a functional unit, generated by microcogenerator fuel cells as SOFC. The analysis was performed using the Life Cycle Assessment methodology, which allows to co…
The emission reduction potentials of First Generation Electric Aircraft (FGEA) in Finland
2020
Under the looming climate crisis, aviation needs to find new solutions to cut its greenhouse gas emissions. One pathway towards zero emissions is the use of electric aircraft. While current battery technology will not allow for medium and long-haul flights at full capacity, on short-haul routes First Generation Electric Aircraft (FGEA) could play a significant role in the near future. Current FGEA under development could carry 9–19 passengers on distances of 400–1046 km by 2025. This study focuses on the emissions reduction potentials of FGEA in Finland. It compares the carbon dioxide equivalent (CO2-eq) emissions and real travel times (RTT) from door-to-door of FGEA on 47 routes with exist…
Volcanic activity and gas emissions along the South Sandwich Arc
2020
AbstractThe South Sandwich Volcanic Arc is one of the most remote and enigmatic arcs on Earth. Sporadic observations from rare cloud-free satellite images—and even rarer in situ reports—provide glimpses into a dynamic arc system characterised by persistent gas emissions and frequent eruptive activity. Our understanding of the state of volcanic activity along this arc is incomplete compared to arcs globally. To fill this gap, we present here detailed geological and volcanological observations made during an expedition to the South Sandwich Islands in January 2020. We report the first in situ measurements of gas chemistry, emission rate and carbon isotope composition from along the arc. We sh…
A New Web-Based Catalog of Earth Degassing Sites in Italy
2008
Italy is a region characterized by intense and widespread processes of Earth degassing. High-temperature gases are released by crater plumes and fumaroles in volcanic environments throughout Italy. Also prevalent are numerous low-temperature gas emissions rich in carbon dioxide (CO2). These low-temperature emissions are located in a large area, mainly in the western sector of central and southern Italy (Figure 1).
Intercomparison of SO2 camera systems for imaging volcanic gas plumes
2015
Abstract SO 2 camera systems are increasingly being used to image volcanic gas plumes. The ability to derive SO 2 emission rates directly from the acquired imagery at high time resolution allows volcanic process studies that incorporate other high time-resolution datasets. Though the general principles behind the SO 2 camera have remained the same for a number of years, recent advances in CCD technology and an improved understanding of the physics behind the measurements have driven a continuous evolution of the camera systems. Here we present an intercomparison of seven different SO 2 cameras. In the first part of the experiment, the various technical designs are compared and the advantage…