Development of a ZnOS+C Composite as a Potential Adsorbent for the Effective Removal of Fast Green Dye from Real Wastewater

Abstract

Wastewater treatment is becoming increasingly important due to the potential shortage of pure drinking water in many parts of the world. Adsorption offers a potential technique for the uptake of contaminants and wastewater purification. In the last two decades, several efforts have been made to remove fast green (FG) dye from wastewater via different adsorbent materials. However, adsorption capacity shown by these adsorbents is low and time-consuming. Herein, we have synthesized for the first time a new powdered adsorbent ZnOS+C, modified zinc peroxide with sulfur and activated carbon to effectively remove FG dye from wastewater. Results of batch adsorption experiments have suggested that ZnOS+C has the maximum adsorption potential of 238.28 mg/g for FG dye within 120 min of adsorption equilibrium for a wide range of pH ranging from 2 to 10 pH. The adsorption process conforms to the Freundlich isotherm model, suggesting a multilayered adsorption process on the outer surface of ZnOS+C. The adsorption kinetics study indicates that the kinetics of the reaction are the intraparticle diffusion model. Briefly, this study shows proof of the application of ZnOS+C powder as a new eco-friendly adsorbent with extremely high efficiency and high surface area for removing FG dye.

ZnO2‐Based Carbon Composite Doped with Sulphur for the Removal of Highly Toxic Thiamethoxam from Wastewater

“…Other peaks were observed at different 2θ angles including 33.1°, 48°, 58.7° and 69.64° corresponding to synthesized zinc peroxide‐based carbon composite further functionalized with sulphur (ZnOS) material as shown in Figure 1. These peaks are some resemblances to the previous published data by Sachin et al., 2023 [32] . This clearly demonstrates the successful synthesis of the ZnO 2 ‐based carbon adsorbent, providing insight into its exceptional quality.…”

“…ZnO 2 -based carbon composite was synthesized using the previously reported method. [32] For this, 100 gm of zinc acetate dihydrate was dissolved in 250 mL of DI water at ambient temperature and relative humidity in the laboratory. The temperature of the above mixture was kept at 90 � 2 °C for heat treatment and was stirred for 10-15 minutes at 650 RPM at the temperature of 90 � 2 °C.…”

“…ZnO 2 ‐based carbon composite was synthesized using the previously reported method [32] . For this, 100 gm of zinc acetate dihydrate was dissolved in 250 mL of DI water at ambient temperature and relative humidity in the laboratory.…”

“…A balanced and healthy diet must include purified water, which is also necessary for the proper functionality of both human and animal bodies. [1,2] Water makes up about 50-80 % of the human body. In the human body, all the chemical processes take place in water.…”

Effect of the Standardized ZnO/ZnO-GO Filter Element Substrate driven Advanced Oxidation Process on Textile Industry Effluent Stream: Detailed Analysis of Photocatalytic Degradation Kinetics

“…This leads to a higher overall absorption capacity of the ZnO-GO which helps improve the photocatalytic process activity for dye wastewater by utilizing sunlight through the creation of electron-hole pairs. The resultant band gap energy for ZnO and ZnO-GO was found to decrease from 3.12 and 3.06 eV, respectively, due to the charge carrier concentration on the GO sheet . Quantification of the photocatalytic remediation process is performed using a univariate calibration model which provides the relationship between the characteristic response with the concentration of the dye present in the wastewater sample.…”