Removal of Acid Yellow 17 from Textile Wastewater by Adsorption and Heterogeneous Persulfate Oxidation

Abstract

Azo dyes commonly used in various industries have a stable and toxic structure. Wastewater containing AY17 dye as a model contaminant was investigated in terms of color and COD removal by both adsorption and persulfate oxidation activated with the PAC. In this study, the effects of temperature (25–50 °C), pH (3–10), persulfate concentration (1000–4000 mg/L), adsorbent dosage (0.1–0.5 g), reaction time (5–60 min), dye concentration (300–1000 mg/L) and NaCI concentration (0–1000 mg/L) on both color and COD removals from wastewater containing AY17 dye were examined. As a result of the study, it was seen that the dosage of adsorbent, pH and reaction time are important parameters in both systems. The use of the PAC as an adsorbent caused to shortening of the reaction time in the HPS system. It also showed that acidic and neutral pH values are more suitable for the removal of AY17 with both systems. Color and COD removal were determined as 100–88.4% and 100–96.6%, respectively, at optimum values obtained for the adsorption and HPS system. An experimental design was applied for various operating parameters in order to analyze experimental data. Models have been proposed for both color removal and COD removal estimates for both systems.

Biochar‐C‐TETA as a superior adsorbent to acid yellow 17 dye from water: isothermal and kinetic studies

“…One of the sources of this environmental degradation is the dye industry 2,3 . Dyes are chemical compounds that color various materials, including paper, fabrics, leather, plastics, hair, food and pharmaceuticals 4,5 . The colored wastewater from manufacturing these materials damages aquatic life by reducing light penetration and containing extremely toxic metal ions in the dye‐polluted water 6 .…”

“…Mandarin peels, which make up between 8% and 14% of the weight of the fruit used to make fruit juice, are released into the environment 29 . Most uses of mandarin peels are in the fertilizer, fuel and animal feed industries, as well as in the powder and paint business 4,30 . The extensive use of mandarins creates a substantial volume of fruit peels as a waste of biomass 29 .…”

“…2,3 Dyes are chemical compounds that color various materials, including paper, fabrics, leather, plastics, hair, food and pharmaceuticals. 4,5 The colored wastewater from manufacturing these materials damages aquatic life by reducing light penetration and containing extremely toxic metal ions in the dye-polluted water. 6 Both natural and synthetic dyes fall within the category of these colorants.…”

Taguchi Experimental Design Method for the Reuse of Wastewater in Textile Processes

“…This enables the investigation of the effects of multiple factors on the performance, and also the influence of individual factors. The signal-to-noise (S/N) ratio and analysis of variance (ANOVA) are used to determine the optimal parameters and to analyze the experimental results, respectively [10,11]. In fact, experimental design methods are used in the textile industry to develop and improve production processes [12,13].…”

Cleaning of Wastewater Using Crosslinked Poly(Acrylamide-co-Acrylic Acid) Hydrogels: Analysis of Rotatable Bonds, Binding Energy and Hydrogen Bonding

“…Both water and dyes are still largely used in the textile industry, meaning that the wastewater after production is a mixture of dyes and water. Unfortunately, the elimination of the wastewater often occurs through discharge into rivers and other effluents [ 5 , 6 , 7 , 8 , 9 , 10 , 11 , 12 ].…”