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 (630Kb)
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| Shiro Hatakeyama | |
| Director | |
| Chemical Reaction Section, Atmospheric Environment Division | |
| National Institute for Environmental Studies | |
| Environment Agency | |
| 16-2 Onogawa, Tsukuba, Ibaraki 305-0053, Japan | |
| Tel: +81-298-50-2502 Fax: +81-298-50-2579 | |
| E-mail: hatashir@nies.go.jp | |
| EF Fellow Name: Shidong GAO |
4,017,000 Yen
In this study, the possibility of manufacturing technique of bio-briquette added slaked lime which can fix sulfur dioxide in high efficiency was investigated. The experimental results indicated: (1) there were little emissions of air pollutants from biomass combustion and emission amounts were 35-912 and 52-1764 mg for HCl and SO2 per 1kg of biomass, respectively; (2) the breaking strength of the bio-briquette increased with increase of addition amount and lignin contents of biomasses, which were in range of 12.1-35.1%. The bio-briquette with satisfactory strength could be produced by adding 25% biomasses without any special binder; (3) it is estimated based on our experimental results that the reduction efficiency of HCI, SO2 and dust by the bio-briquette ranged 26-61%, 82-88% and 55-83%, respectively. It is considered that the bio-briquette will be a useful countermeasure to control emission of air pollutants for civilian and small factory consumes of raw coal; (4) the solution leached from residual ash by simulated acid rain was alkaline. The residual ash was strong alkalinity due to extra amount of slaked lime and its buffering ability to acidification was very high. It is possible that residual ash of bio-briquette will be used as the neutralizers of the acidic soil and the fertilizers of nourishment supply because it contains much nourishment elements such as Ca, Mg, and K derived from added sulfur-fixation agent and biomass.
Biomass, Bio-briquette, Breaking strength, Combustion aerosol, Zero-emission