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- W2092637721 abstract "2,4-dichorophenol (2,4-DCP) was degraded in a pulsed high voltage discharge system with particular focus on the optimum of processing parameters and identification of the intermediate products. By increasing peak voltage or frequency, the 2,4-dichorophenol degradation could be sped up. The energy input was mounted up from 0.0057 to 0.0397 kWh and 2,4-DCP degradation efficiency was enhanced from 58% to 99% in 42 min by increasing peak voltage from 18 kV to 26 kV. Under the same 2,4-DCP degradation efficiency, less energy input was required for higher pulse frequency with a shorter discharge time. Higher pH value was advantage for 2,4-DCP degradation while salt content was proved to have little effect on 2,4-DCP degradation in the present discharge reactor. From the identifications of main intermediates resulted from 2,4-DCP degradation, it is illustrated that the degradation is induced by OH, which could mainly attack the Ortho-position of the OH group to form 3,5-dichloro-1,2-benzenediol or substitute the Cl group in 2,4-DCP to produce 2-chlorohydroquinone. The 2-chlorohydroquinone could be further reacted with OH to produce 1,2,4-trihydyoxybenzene. Additional, some ring-opened products such as (e,e)-2,4-hexadienal, formic, oxalic, maleic and d-(+)-malic acid were recognized by GC-MS and Ion Chromatograph detection. ► 2,4-dichorophenol was effectively degraded by pulsed high voltage discharge. ► Removal percent of 99% was achieved in 42 min with energy efficiency of 1.19 g/kWh. ► Increasing peak voltage or frequency could speed up the removal rate. ► The 2,4-dichorophenol degradation was induced by hydroxylation reaction. ► The intermediate products are identified and the degradation pathway is discussed." @default.
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- W2092637721 date "2012-10-01" @default.
- W2092637721 modified "2023-10-16" @default.
- W2092637721 title "Degradation of 2,4-dichorophenol by pulsed high voltage discharge in water" @default.
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- W2092637721 doi "https://doi.org/10.1016/j.desal.2012.01.027" @default.
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