Destruction of organic Cl and Br compounds through incineration enhanced by alkali and alumina addition

作者：Takata Mitsuyasu; Watanabe Nobuhisa^*; Yamamoto Shuhsaku

来源：Journal of Material Cycles and Waste Management, 2015, 17(2): 282-289.

DOI：10.1007/s10163-015-0359-x

• Organic chlorine
• Organic bromine
• PCBs
• Incineration
• Destruction

Thermochemical destruction of organic Cl and Br compounds in a combustion system was studied. A Cl compound and three Br compounds, namely, 1,2,3,4-tetrachlorobenzene (TeCB), 1,2,4,5-tetrabromobenzene (TeBB), tetrabromobisphenol A (TBBPA), and decabromodiphenyl ether (DBDE) were used. The samples on a boat were combusted at 600 A degrees C followed by gas combustion at 800, 900, and 1,100 A degrees C. An off-gas was adsorptively collected and introduced into a Cl and Br detector by thermal desorption. The destruction efficiency was evaluated using the organic halogen residual ratio (OX-RR) (mu g g(-1)). Halogenated benzene compounds such as TeCB and TeBB were destructed moderately (OX-RR for these compounds at 800, 900 and 1,100 A degrees C was 112, 35 and 32 mu g g(-1) and 258, 57 and 48 mu g g(-1), respectively); on the other hand, the destruction of TBBPA and DBDE, namely fire retardants, was difficult (OX-RR at 800 A degrees C for these compounds was 7,159 and 718 mu g g(-1), respectively). Addition of an alkali and an alumina to a sample enhanced the destruction of organic compounds drastically by several times. This destruction enhancement occurred at temperature as low as 600 A degrees C. Such chemical halogen control is effective to thermal destruction of organic Cl and Br compounds.

• 出版日期2015-4