Water-soluble characteristics of chlorine in char derived from municipal solid wastes

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概要

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• Chlorine in char derived from municipal solid waste (MSW) was characterized and quantified based on its water solubility: easily water-soluble, hardly water-soluble, and non-water-soluble chlorine. For that, a four-cycle process of water-washing, heating or carbonation were carried out. In order to confirm the characteristics of non-water-soluble chlorine, additional thermal treatment and an alkali- acid washing process were applied to washed char. It was found that a large particle size of char (0.5 to 1.0 mm) significantly contributed to the amount of non-water-soluble chlorine. Pulverization and HNO_3 HF digestion were performed to identify a factor to interfere chlorine release from char with a large particle size. Pulverization was proven ineffective for release of non-water-soluble chlorine, whereas approximately 32% of non-water-soluble chlorine was extracted by HNO_3 HF digestion. Therefore, the presence of non-water-soluble chlorine is likely to originate from its chemical property rather than simply from its physical one.

• Elsevierの論文

著者

• Matsuto T.

  Lab. Of Solid Waste Disposal Engineering Graduate School Of Engineering Hokkaido Univ. Kita 13 Nishi

• Hwang I.h.

  Lab. Of Solid Waste Disposal Engineering Graduate School Of Engineering Hokkaido Univ. Kita 13 Nishi

関連論文

• Characterization of char derived from various types of solid wastes from the standpoint of fuel recovery and pretreatment before landfilling
• Water-soluble characteristics of chlorine in char derived from municipal solid wastes
• Flow analysis of metals in a municipal solid waste management system
• Behavior of metals in ash melting and gasification-melting of municipal solid waste (MSW)
• Material and heavy metal balance in a recycling facility for home electrical appliances
• Metal distribution in incineration residues of municipal solid waste (MSW) in Japan

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