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[C-4.1.4 Co-operative Study on Application of Emission Control Technology for Precursors Causing Acid Rain in the Southwestern China: Analysis of Coal and Control of Fluoride Emission with Bio-briquetting in Chongqing]

[Contact Person]

Wei Wang^a)
Kazuhiko Sakamoto^a) & Ikuo Watanabe^b)
a) Graduate School of Sciences and Engineering, Saitama University, 255
Shimo-okubo, Urawa, Saitama 338, Japan
Tel.+81-48-858-3519 Fax:+81-48-855-2889
^b) The National Institute of Public Health
4-6-1 Shirokanedai, Minatoku, Tokyo 108, Japan

[Total Budget for FY1995-1996]

9,683,000 Yen (FY1996 4,800,000 Yen)

[Abstract]

　Sulfur dioxide and the other air pollutants emitted from coal combustion were the most important cause of acid rain and air pollution in Chongqing where was suffered from severe air pollution and serious damage. It was known that the fluoride pollution caused health injuries and forests damage. In this paper, the simultaneous control of SO₂ and fluoride emission from coal combustion with bio-briquetting method was investigated. The results obtained from the combustion test of raw coal and bio-briquette indicated that the sulfur and fluoride emissions from bio-briquette combustion were considerably decreased in comparison to raw-coal combustion. Under our experimental condition, sulfur- and fluoride-fixation efficiencies amounted to 90% and 95% respectively. So, bio-briquette containing Ca(OH)₂ could be suitable for the control of such pollutants in the district where it had been observed high concentration of fluoride from coal combustion, too. These results suggest that bio-briquetting technology can be applied efficiently to the simultaneous control of SO₂ and fluoride emission from coal combustion in Chongqing.

[Key Words]

Air pollution control, Bio-briquette, Sulfur-fixation, Fluoride-fixation, Acid rain