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

Controlled chemical synthesis of CaO2 particles coated with polyethylene glycol: characterization of crystallite size and oxygen release kinetics

“…28 In the previous studies, various approaches have been used for controlling calcium peroxide size in the nanoscale. For example, nanosized calcium peroxide has been obtained previously by using calcium nitrate as a precursor, 29 polyethylene glycol with low molecular weight as a stabilizer 15 and different dispersants such as PVP and PVA. 30,31 However, in the present study, decreasing calcium peroxide crystallite size was achieved by controlling the addition rate of hydrogen peroxide and using diethylene glycol monomethyl ether as a stabilizer.…”

Enhanced biohydrogen generation through calcium peroxide engendered efficient ultrasonic disintegration of waste activated sludge in low temperature environment

“…The increase in temperature enhances the CaO 2 decomposition and thereby increases the generation of reactive • OH radicals from H 2 O 2 . During the thermal treatment, the generation of refractory contaminants is removed by CaO 2 (Kaewdee et al, 2016). While combining the thermal and oxidant pretreatment, the treatment efficiency is higher even at the lower addition of oxidants, and at lesser operating condition.…”

“…The decrease in EPS content is related to the compact structure of flocs due to the compression of EPS by bridging Ca 2+ ions. The heat treatment, along with CaO 2 , can stimulate CaO 2 decomposition and helps in faster • OH radical and H 2 O 2 generation (Kaewdee et al, 2016). The combination of pretreatment method was found to lower operation conditions (Liu et al, 2019).…”