Effects of Quartz Addition on the Mechanochemical Dechlorination of Chlorobiphenyl by Using CaO

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 dec...

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Bibliographic Details
Published in:Environmental science & technology 2001-12, Vol.35 (24), p.4933-4935
Main Authors: Zhang, Qiwu, Saito, Fumio, Ikoma, Tadaaki, Tero-Kubota, Shozo, Hatakeda, Kiyotaka
Format: Article
Language:English
Subjects:
Applied sciences
Biomechanical Phenomena
Biphenyl Compounds - chemistry
Biphenyl Compounds - isolation & purification
Calcium Compounds - administration & dosage
Calcium Compounds - chemistry
Chlorine - chemistry
Dioxins
Environmental cleanup
Exact sciences and technology
Gas Chromatography-Mass Spectrometry
Global environmental pollution
Oxides - administration & dosage
Oxides - chemistry
PCB
Pollution
Polychlorinated biphenyls
Polychlorinated Biphenyls - chemistry
Polychlorinated Biphenyls - isolation & purification
Quartz
Quartz - administration & dosage
Spectrum Analysis
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Summary: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.
ISSN:0013-936X
1520-5851
DOI:10.1021/es010638q