Executive Summary Western Research Institute (WRI) and its cosponsor Novinda Corporation (the Company was originally known as Amended Silicates, Inc.) proposed the development, characterization and testing of sorbents based on clay deposits abundant in Wyoming for the in-flight capture of mercury in pulverized coal derived flue gasses. As a part of the State of Wyoming’s Clean Coal Technologies...

CONTEXT . China's rapid economic development has come at the cost of severe environmental degradation, most notably from coal combustion. Outdoor air pollution is associated with >300000 deaths, 20 million cases of respiratory illness, and a health cost of >500 billion renminbi (>3% of gross domestic product) annually. The young are particularly susceptible to air pollution, yet there has been ...

403 The Journal of The South African Institute of Mining and Metallurgy JULY/AUGUST 2003 Introduction Coal preparation is used to upgrade run-ofmine coal before it is utilized by the end-user, primarily electric utility power plants. According to Fonseca1, the coal preparation process reduces the amount of noncombustible mineral impurities, acid-rain precursor sulphur-bearing minerals and hazar...

The combustion of fossil fuels (eg coal, oil shale) to generate energy results in the production of alkaline solid wastes @y ash, clean coal technology (CCT) ash, spent shale etc). Reactions involving calcium (Ca) and carbon dioxide (C02) usually control the pH and mobility of inorganic contaminants such as Cd, P b and Se in alkaiine solid wastes. Samples offly ash, spent shale iutd CCT ash wer...

Clean air in the operating room is important during joint replacement surgery. We compared monochromatic ultraviolet radiation of254 nm with the use ofa Charnley-Howorth air enclosure by bacterial air-sampling during 113 total hip arthroplasties. Air samples were taken continuously at the edge of the wound and every 15 minutes at a site 130 cm from the operating table. We also tested the effect...

For a TeV energy particle physics, R&D of electron/positron linear colliders has been conducted very hard at many laboratories. Development of high field gradient cavities is one of key issues to realize such a machine. Field emission loading is a dominant phenomenon limiting high field. Particulate contamination on the inner surface is a main source of field emission. In this paper, we report ...

In this paper, an improved system to efficiently utilize the low-temperature waste heat from the flue gas of coal-fired power plants is proposed based on heat cascade theory. The essence of the proposed system is that the waste heat of exhausted flue gas is not only used to preheat air for assisting coal combustion as usual but also to heat up feedwater and for low-pressure steam extraction. Ai...

The Zero Emission Coal Alliance (ZECA) is developing an integrated zero emission process that will generate clean energy carriers (electricity or hydrogen) from coal. The process exothermically gasifies coal using hydrogen to produce a methane rich intermediate state. The methane is subsequently reformed using water and a CaO based sorbent. The sorbent supplies the energy needed to drive the re...