Chlorine dioxide (ClO2) is an unstable green-yellowish gas with an irritating odor [1]. In water, ClO2 exists as free radicals and as a powerful oxidizing agent, it reacts easily with reducing agents. The end products of ClO2 reactions are chloride (Cl-), chlorite (ClO-), and chlorate (ClO3) [2]. Chlorine dioxide is a promising food preservative as a substitute for chlorine (Cl2) because unlike...

We have previously derived seven requirements for the formulation of effective stain etchants and have demonstrated that Fe3+, Ce4+, and VO2+ + HF solutions are highly effective at producing nanocrystalline porous silicon. Here, we show that Cl2, Br2, I2, ClO3-, BrO3-, IO3-, I-, and I3- induce etching of silicon when added to HF. However, using the strict definition that a pore is deeper than i...

The nitrovanillin azine (NA) has been successfully synthesized and examined as a colorimetric chemosensor for sulfide anion detection. NA was using two steps reaction. Vanillin reacted with concentrated nitric acid to form 5-nitrovanillin (NV) then the NV condensed hydrazine hydrate produce NA. obtained fully elucidated by FTIR, 1H-NMR, 13C-NMR, GC-MS spectrometer. activity anionic carried out ...

Chlorite dismutases are prokaryotic heme b oxidoreductases that convert chlorite to chloride and dioxygen. It has been postulated that during turnover hypochlorite is formed transiently, which might be responsible for the observed irreversible inactivation of these iron proteins. The only charged distal residue in the heme cavity is a conserved and mobile arginine, but its role in catalysis and...

The present study focuses simply on propellants which are environment friendly i.e. Green propellants. In Propulsion Systems, there are two ingredients burned together which are fuel & oxidizer and the resultant energy is used to propel the system. In composite solid rocket propellants, Ammonium perchlorate (AP) is being used extensively which has its own disadvantages i.e. HCl release during i...

The chlorination used in water treatment plants can promote the formation of toxic compounds, which be minimized by substituting free available chlorine (FAC) with dioxide (ClO2). Besides disinfection, combining ClO2 UV radiation leads to efficient elimination organic substances. This work employed a lab-made reactor equipped LEDs emitting at 367 nm adjustable photon flux investigate efficiency...