Application Sodium percarbonate (cas 15630-89-4) to Oxidative Degradation Trichloroethylene Contamination in Groundwater

Add time:09/08/2019    Source:sciencedirect.com

Sodium percarbonate (cas 15630-89-4) has been shown to oxidize a wide variety to organic and inorganic compounds in water under multiple conditions of environment. Compared to function with Fenton's reagent, Sodium percarbonate is effective showed over an extensive pH range. In This study, therefore, was to discover the characteristics of peroxide process by using trichloroethenes (TCEs) as Standards compounds. The Results demonstrate that TCEs can be oxidized or dissolved by sodium percarbonate. When the molar ratios of [TCE]/[2Na2CO3•3H2O2] ranged from 5 to 10, the oxidation or decomposition rate increased with increasing ratio. Even though the theoretical dosage of [TCEs]/[2Na2CO3•3H2O2] even down to 0.5 for complete degradation of TCEs, it still needed, at least, 4 moles of [2Na2CO3•3H2O2] to degradation this chemical dosage. This indicates that oxidation intermediates competed sodium percarbonate molecules with the parent TCEs. The primary pH has no obviously efficacy on TCEs decompose, because hydrogen-ions were conformation during the period of TCEs degradation.

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