Energy & Fuels | Vol 24, No 1

Effects of Indigenous and Added Minerals on Transformation of Organic and Inorganic Sulfur in Density Separated Coal Fractions during CO 2-Pyrolysis Dangzhen Lv Minghou Xu* Hong Yao Xiaowei Liu Wei Jiang Huilong Cao Zhonghua Zhan

4. What are the environmental impacts of biofuel production?

4. What are the environmental impacts of biofuel production? 4.1 Can biofuels help mitigate climate change? 4.2 What changes to agricultural land would biofuel production require? 4.3 How will biofuel production affect water resources? 4.4 How will biofuel production affect soils? ...

Frontiers | Economics of CO2 Utilization: A Critical Analysis | …

The economics of CO2 utilization are discussed from a critical perspective, with a concise analysis of the state-of-the-art of economics in power-to-X (methanol, methane). The main elements of the analysis of the economics are commented to provide guidelines on how to interpret the techno-economic results in the area of CO2 utilization. It remarks the need of a careful analysis of the specific ...

Typical Causes of Slagging and Fouling Problems in Boilers …

 · Coal fineness meets the following guidelines: At least 75% passes a 200-mesh screen and less than 0.2% remains on a 50-mesh screen with representative and isokinetically removed coal fineness samples.

Coal gasification in CO2 atmosphere and its kinetics since …

 · Fig. 2 shows the variation of the gasification rate with the carbon content present in the coal in the CO 2 atmosphere at atmospheric pressure and 900 C. In the figure, Miura et al. found that the gasification reactivity data of chars, prepared from 68 different coals by different authors , , , , were very scattered for low-rank coals (%C < 80), but the reactivity was higher than that obtained ...

Inerting system

An inerting system decreases the probability of combustion of flammable materials stored in a confined space, especially a fuel tank, by maintaining a chemically non-reactive or "inert" gas, such as nitrogen,[1] in such a space. "Inerted" fuel tanks may be used on land, or aboard ships[2] or aircraft.

Frontiers | Economics of CO2 Utilization: A Critical Analysis …

The economics of CO2 utilization are discussed from a critical perspective, with a concise analysis of the state-of-the-art of economics in power-to-X (methanol, methane). The main elements of the analysis of the economics are commented to provide guidelines on how to interpret the techno-economic results in the area of CO2 utilization. It remarks the need of a careful analysis of the specific ...

Negative emissions—Part 2: Costs, potentials and side …

 · Side effects. A wide variety of biophysical, social and economic side-effects are considered in the AR literature. One of the most prominent issues from a climate perspective is albedo change, which finds significant attention particularly in global studies (Anderson et al 2011 , Arora and Montenegro 2011 , Betts et al 2007 , Jackson et al 2008 , Wang et al 2014 ).

Recognizing the Value of Collaboration in Delivering …

Removing CO2 from the atmosphere is needed in addition to deep mitigation of CO2 emissions. As not all countries possess the geo-biophysical assets to provide sustainable, permanent, and affordable CO2 removal, a cooperative and collaborative approach to CO2 removal, based on equitable burden sharing and CO2 sink trading, is needed to meet global CO2 removal goals at least cost.

CO2 Utilization: A Process Systems Engineering Vision | …

 · CO2 Mineralization for Environmental Remediation: Lim et al. (2013) reviewed the application of carbonation to solidify or stabilize solid combustion residues from municipal solid wastes, paper mill wastes, etc. and contaminated soils, and to manufacture

The Covid Lockdown and CO2 | Watts Up With That?

 · On the “natural” side he counts emissions of CO2, and ignores removals of CO2. On the “human” side he counts net emissions of CO2. If you compare apples-to-apples (i.e., net CO2 flux, from both sources), it is obvious that mankind is responsible for the increase in CO2 level.

Environmental Impacts of Renewable Energy Technologies …

All energy sources have some impact on our environment. Fossil fuels—coal, oil, and natural gas—do substantially more harm than renewable energy sources by most measures, including air and water pollution, damage to public health, wildlife and habitat loss, water use, land use, and …