Abstract：
:Dechlorane Plus (DP) was co-ground with calcium oxide (CaO) powder in a planetary ball mill at room temperature. A mechanochemical reaction was induced, resulting in the decomposition of DP through dechlorination. The influences of both the charge ratio and content of CaO were investigated. The co-ground samples were characterized and analyzed by X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FTIR), Raman spectroscopy, gas chromatography/mass spectrometry (GC/MS), and ion chromatography (IC). With the increase in grinding time, the remained DP decreased and finally was completely destroyed after 4h grinding time in the mixture with a CaO/DP ratio of 25:1 and a charge ratio of 36:1. At the same time, the water-soluble amount of chlorine increased correspondingly and reached 88.6%, demonstrating that dechlorination is the major degradation mechanism. The main degradation products in the final reaction were carbon and CaCl(2), beside the excess CaO. The first carbon structure appeared after grinding treatment was graphite, while the second was amorphous carbon.
journal_name
Chemospherejournal_title
Chemosphereauthors
Zhang W,Huang J,Yu G,Deng S,Zhu Wdoi
10.1016/j.chemosphere.2010.07.025subject
Has Abstractpub_date
2010-09-01 00:00:00pages
345-50issue
3eissn
0045-6535issn
1879-1298pii
S0045-6535(10)00806-4journal_volume
81pub_type
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