Development of a cost-effective technique to remove the arsenic contamination from aqueous solutions by calcium peroxide nanoparticles

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

“…Nanosized CaO 2 was obtained using CaCl 2 and H 2 O 2 as precursors and polyethylene glycol (PEG 200) as a stabilizer. This finding demonstrated the effective oxidizing power on arsenic(III) removal [7]. The purpose of this research is to develop wet synthesis of CaO 2 using Ca(NO 3 ) 2 as a precursor, for the first time, to the best of our knowledge.…”

“…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.…”

In-Situ Remediation Approaches for the Management of Contaminated Sites: A Comprehensive Overview

“…About 96-99 % As and Cr along with phosphate were removed by mixed magnetite-maghemite nanoparticles at a pH 2.0 (Chowdhury and Yanful 2010 ). Singhal et al ( 2012 ) observed 98 % malathion remediation by using ZVI at a pH of 8.2 in 12 h. Calcium peroxide nanoparticles have been used as an innovative agent for in -situ chemical oxidation by Olyaie et al ( 2012 ). Noubactep and Care ( 2010 ) recommended the use of Fe-Pb nanoparticles for reductive dechlorination of lindane.…”

The Use of Nanoparticles in Soil and Water Remediation Processes

“…Regarding the removal of arsenic, either one or both of its relevant species, i.e., As(V) and As(III), several studies were identified [17,[18][19][20][21][22][23][24][25][26][27][28]. Regarding the media addressed for remediation, several studies addressed groundwater [18][19][20][21][22][23], several other addressed water in general [17,24,25]; other studies addressed soil and groundwater remediation [26][27][28].…”