Photo-Fenton like Catalyst System: Activated Carbon/CoFe2O4 Nanocomposite for Reactive Dye Removal from Textile Wastewater

Abstract

The removal of dye from textile industry wastewater using a photo-Fenton like catalyst system was investigated wherein the removal efficiency of phenol and chemical oxygen demand (COD) was studied by varying various parameters of pH (3–11), reaction time (1–50 min), activated Carbon/CoFe2O4 (AC/CFO) nanocomposite dosage (0.1–0.9 g/L), and persulfate amount (1–9 mM/L). The highest removal rates of reactive red 198 and COD were found to be 100% and 98%, respectively, for real wastewater under the optimal conditions of pH = 6.5, AC/CFO nanocomposite dosage (0.3 g/L), reaction time, 25 min, and persulfate dose of 5 mM/L up on constant UV light irradiation (30 W) at ambient room temperature. The result showed that this system is a viable and highly efficient remediation protocol relative to other advanced oxidation processes; inexpensive nature, the ease of operation, use of earth-abundant materials, and reusability for removal of organic pollutants being the salient attributes.

Biomass-Based Adsorbents for Removal of Dyes From Wastewater: A Review

“…It also blocks sunlight penetration thereby inhibiting photosynthesis (Bello et al, 2015;Dey et al, 2017). Dyes are usually classified based on their chemical structure, such as anionic, cationic, and nonionic; reactive dyes are stable and anionic, and display resistance toward light (Heidari et al, 2019;Dai et al, 2018). As shown in Figure 2, several types of dye removal technologies are accessible with varying degrees of success, such as chemical precipitation, reduction, oxidation, coagulation, ion-exchange, reverse osmosis, solvent extraction, flocculation, membrane separation, filtration, evaporation, electrolysis, and adsorption, which have been used to remove and recover toxic contaminants from industrial effluent (Afroze and Sen, 2018;Ahmad et al, 2011b).…”

Systematically Exploring Molecular Aggregation and Its Impact on Surface Tension and Viscosity in High Concentration Solutions

“…The aggregation behavior of dye molecules is common in aqueous solutions because of molecular interaction [1][2][3][4]. The aggregation has crucial influences on properties of solutions, especially highly concentrated solutions, which are usually used as raw materials for the industrial production processes such as fiber dyeing and printing and photoelectric thin film preparation [5][6][7][8][9][10][11][12][13][14][15]. Meanwhile, the surface tension and viscosity of the solutions are also important factors determining the properties of dye solutions [16], which would be affected by the dye molecular aggregation structure [17].…”

Characteristics of co-precipitation synthesized cobalt nanoferrites and their potential in industrial wastewater treatment

“…This low efficiency may be due to high organic pollutions which are not removed effectively by the nanoferrites. However, Activated Carbon/ CoFe 2 O 4 nanocomposites have been reported to result in higher removal efficiency [51]. Obviously the nanocomosites have advantages over nanoferrites in the COD removal as has been reported due to photocatalytic properties of their core shell [51].…”