Humid Air Plasma Treatment of Birnessite Surface: Application to the Removal of Cochineal Red

Abstract

The thin layers of birnessite (Mn7O13•5H2O) are exposed to reactive species gliding arc plasma in humid air, which induces the treatment of the thin layers surface. Plasma treatment thin layer of birnessite was used for the degradation of Cochineal Red. The experimental results showed that 95% of the CR solution was completely decolorized by thin layer of birnessite treated by plasma compared to 80% of the same solution after interaction of thin layer of birnessite untreated. The decay kinetics always follows a pseudo-first order reaction. The application of the humid air plasma for the surface treatment of thin layers of birnessite improves the efficiency of treatment for Cochineal Red degradation.

Removal of Cochineal Dye Color through Atmospheric Pressure Plasma Discharge Jet

“…The results demonstrated that approximately 90% of the dye was degraded after 10 min of exposure (Figure 4). This finding is consistent with a similar study reported by Chouchene et al [34] and Crema et al [35]. Indeed, Chouchene reported that the interaction of cochineal dye with a plasma-treated birnessite layer leads to 95% degradation after 24 h. These results support the hypothesis that plasma treatment can be an effective method for dye removal, making plasma irradiation a promising technique for eliminating dyes.…”

“…In recent years, there has been an increase in the number of research studies focusing on the removal and discoloration of pigments and industrial dyes using non-thermal plasma discharge. Chouchene et al [34], reported on the degradation of cochineal red using birnesite thin films that were treated with moist air plasma. Cream et al [35] compared the degradation of indigo carmine in water using different methods, such as non-thermal plasma (NTP), ozone (O 3 ), and hydrogen peroxide (H 2 O 2 ).…”

Zn-Fe Layered Double Hydroxides Synthesized by Three (03) Methods of Coprecipitation : Application to the Removal of Cochineal Red Dye from Aqueous Solution

“…Cochineal red which is extracted from dried female cochineal insects (dactylopius coccus) finds application in certain industrial fields such as food, textile, cosmetic, and pharmaceutics [21,22]. Its structure is shown in Figure 1 [23]. It may cause occupational asthma, extrinsic allergic alveolitis cheilitis, and food allergy [24][25][26].…”