Degradation of trichloroethylene in aqueous solution by calcium peroxide activated with ferrous ion

Effect of operating parameters on trichloroethylene degradation by extended release of nanoscale zero-valent iron

“…The TCE degradation kinetics decelerated with the increase in pH. The results obtained in this study are similar to previous findings in the literature [24,25]. As the initial pH increased from 2.0 to 6.8, the degradation efficiency decreased from 69 to 47% after a reaction time of 120 min.…”

“…This can be attributed to an increase in the seawater ratio producing a higher chloride concentration. Some researchers have shown that chloride ions may inhibit TCE degradation [12,25]. It has been hypothesized that the inhibitory effect is due to the passivation of reactive sites resulting from the formation of Fe-chloride complexes on the iron surface [30,31] Furthermore, the dissolved organic matter (DOM) that is originally present in seawater may affect the degradation of TCE.…”

Properties of calcium peroxide for release of hydrogen peroxide and oxygen: A kinetics study

“…Bogan et al [27] reported that CaO 2 performed better than liquid H 2 O 2 for removing PAH from soil. Furthermore, other simulated experiments and engineering practices indicated that the application of CaO 2 was more effective for the chemical oxidation of contaminants in soils and ground water [16,19,30].…”

“…(2)) and react for relatively long time and reduce disproportionation of H 2 O 2 to O 2 [19,20,28,29]. Several studies have reported that adding CaO 2 to saturated soils and ground water was suitable when using MF-ISCO to remove organic contaminants [11,30]. Ndjou'ou and Cassidy [1] applied a commercially available CaO 2 -based oxidant to the treat soils contaminated with total petroleum hydrocarbons (TPH) and found that CaO 2 removed 96% of TPH.…”

Multicatalytic properties of nanoparticle CaO2 synthesized by a novel, simple and economical method for wastewater treatment

“…Regulations on management of pollutants before releasing them to lakes, streams, groundwater and rivers is therefore necessary for industries and even agricultural farms. In general, contaminant chemicals in groundwater and soil include polycyclic aromatic hydrocarbons [1], toluene [2], benzene, 2,4,6-trinitrotoluenes [3], trichloroethylene [4], total petroleum hydrocarbons [5], ethylbenzene, arsenic [6,7], α-methylnaphtalene [8] and endocrine-disrupting compounds in waste activated sludge [9]. Oxygen releasing materials, such as H 2 O 2 , MgO 2 [10] and CaO 2 [11][12][13], are among the most effective materials used in wastewater treatment.…”