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Carbon constrained energy planning is conducted to ensure the allowable carbon emission limit for a nation is fulfilled following the increase in energy demands from growth and development. The increased demand in energy consumption through the years will require additional energy supply and generation which would subsequently increase carbon emission level. However the carbon emission levels in the...
In the current strategic context of coping with global climate change, low carbon concept has gained more and more popularity. For highway transportation system, as one of the main carbon emitters, how to realize effective energy-saving and carbon emission-reducing to achieve green transportation has become a new topic for the next National Twelfth Five-Year Plan. The content and features of green...
As the energy supply lack and climate deterioration, carbon emissions problem is more and more concerned by the world. For construction industry, its related products consume large amount of energy and lead to heavy carbon emissions. In order to provide a rule in evaluating low-carbon performance of buildings, an evaluation frame is given from both life-cycle and low carbon of buildings, and detailed...
In order to avoid climate change on a global level, all nations considered carbon intensive societies and societies which are heavily populated might have to become zero-carbon societies and economies. The development of low-carbon economy is an inevitable choice for China and the whole world. With the result of power grid and power source plan in future, Low-Carbon Economic's influence in power grid...
Since 1997, Costanza and others assessed the value of global ecosystem services. The assessment methodology and the adaptability of the established methods have become the concern of academia. The paper assesses the four forest ecosystem services of Beibu Gulf in China, based on the services valuation methods, accepted by civil experts. These services include forest products, carbon sequestration...
With the constantly changing of global temperatures, the conflict has become increasingly prominent between the limitation of coal, oil, gas and other conventional energy sources and increasing demands. To implement low-carbon economy will become an important strategic choice to dealing with global climate change and achieving sustainable development. So, every country in the world, especially developed...
Researchers around the world are studying on different carbon capture and storage (CCS) options to reduce global warming by reducing CO2 emission from various sources. Among all these options carbonation technology has some promising benefits over other technologies such as exothermic heat, availability of feed stocks, safe carbonated product and value added product and by-product, etc. In carbonation...
An novel technology of CO2 capture from coal-fired flue gas is Ammonia chemical adsorption method. Experimental system of CO2 adsorption by ammonia water is established on the base of a bubble column reactor in this paper. Effects of key parameters on CO2 adsorption process, such as ammonia water concentrations, PH values of solutions, C/N molar ratios, amounts of water brought by gas, are studied...
To reduce CO2 regeneration heat consumption in CO2 capture process, a novel concept named "mass concentration of CO2-rich solution swing regeneration (MSCR)" was put forward in this study. Experiments were executed to investigate the feasibility and energy reduction potential of MSCR by using MEA as absorbent. Results show that CO2 regeneration performance can be improved greatly when MSCR...
Li4SiO4 to be used as a CO2 absorbent are synthesized by used SiO2 and Li2CO3. The crystal structure of the Li4SiO4 materials were analyzed using a X-ray powder diffractometer (XRD), the microstructure of all the samples were observed using the method of scanning electron microscopy (SEM) and the CO2-absorption ability of the Li4SiO4 materials were studied using a thermo gravimetric analyzer (TG)...
The burning of fossil fuels for electricity generation is now the main source of emissions of GreenHouse Gases (GHG). Moreover, during the extraction of oil and gas, an amount of CO2 is carried to the surface, and released into the atmosphere. As the concentration of CO2 in the pre-salt deposits is higher than in wells currently operated, emissions growth will occur not only by the expected growth...
Intensive agriculture is the only way to feed the projected 9 billion people on the planet (FAO, 2002) by the end of this century. Agriculture is a major contributor of 10-12% of total global anthropogenic Green House Gases (GHG) to the atmosphere, but the emissions vary depending on the land use and the way that the land is managed. Fertilizer, energy - and chemical-intensive farming also contribute...
Shipping is of great significance in the integrated transport system, however, ship emissions cannot be neglected in assessing environmental impacts of air pollution and climate change. In order to quantitatively evaluate CO2 emission and mitigation opportunities of Wanzhou shipping in Chongqing municipality, China, we present the development of the CO2 emission inventory of Wanzhou shipping by using...
In this paper we apply a Data Envelopment Analysis (DEA) for measuring changes in total carbon emission efficiency between 1986 and 2008 across Chinese regions and then estimate driving forces of regional carbon emission performance (MCPI). A long-run relationship has been detected and the coefficients, estimated using Kao's method, are statistically significant mostly. Our results indicate the positive...
Since everywhere the carbon budgeting and sequestration process is going on to prevent so many natural devastation, this is the appropriate time to show the merits of TES into light. By keeping this in mind, an idea has been conceived to ascertain the functionalities and uses of a contemporary instrument which plays vital role in measuring carbon concentration in the Earth's atmosphere, conceptually.
Energy and the environment are two of the most important issues this century. More than 80% of our energy comes from the combustion of fossil fuels, which will still remain the dominant energy source for years to come. It is agreed that carbon dioxide produced from the combustion process to be the most important anthropogenic greenhouse gas leading to global warming. Atmospheric CO2 concentrations...
Global warming is due to many factors such as the variation in the incoming solar radiation, earth's magnetic field, atmospheric conditions such as cloud formation, aerosol content, Green House Effect, etc. In the present study, the contribution of Green House Effect is being explored. First, a theoretical estimate of Green House Effect is presented with a verification using the observed values. Then,...
Some potential, structural and long-term accumulated problems gradually arose while the economic volume was growing rapidly in Tianjin. Generally, deterioration of water quality, soil pollution, air pollution, and bio-safety is focused by us. However, Greenhouse gases, global warming and disorders of the climate system gradually became the main factors to affect sustainable human development. Countries...
In order to cope with climate change and global warming, cities and many international organizations actively promote the construction of low-carbon city, which needs evaluation mechanism to support related policies. Based on the theory of fuzzy rough set, this paper constructs the evaluation model and index system of urban low-carbon economy comprehensive evaluation from five aspects include economy,...
Environmentally harmless energy sources, like hydrogen, will become important in a future sustainable system based on renewable energy. Hydrogen is an important, though little studied, trace component of the atmosphere. It is present at the mixing ratio of about 510 ppb. Hydrogen is therefore an indirect greenhouse gas with a global warming potential GWP of 5.8 over a 100-year time horizon. A future...
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