Environmental Science & Technology 2001-12-15

Effects of quartz addition on the mechanochemical dechlorination of chlorobiphenyl by using CaO.

Q Zhang, F Saito, T Ikoma, S Tero-Kubota, K Hatakeda

Index: Environ. Sci. Technol. 35(24) , 4933-5, (2001)

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Abstract

Grinding a mixture of 3-chlorobiphenyl (BP-Cl) and CaO with or without the addition of quartz was conducted in air by a planetary ball mill to investigate the mechanochemical dechlorination of BP-Cl. The dechlorinating reaction proceeds with an increase in grinding time, and over 99% of BP-Cl is decomposed at 360 min. Washing the ground sample with different solvents results in different products. Addition of quartz to the grinding mixture facilitates dechlorination efficiency, especially in the case of a high weight ratio of BP-Cl to CaO.