Monitoring and Recovery of Chromium (III) from Inorganic Waste Industrial Solution

Abstract

Using Solvent Extraction Calixe arene diluted in toluene at pH 6.5 extracts Chromium (III) from aqueous medium well. The equilibrium time has been calculated to be between 20 and 25 minutes. The degree of extraction increases with increasing Chromium (III) concentration in the aqueous phase, whereas the extraction ratio decreases with increasing Chromium (III) concentration. The extraction rate increases as the pH and concentration of Calixe arene rise. The results of batch equilibrium tests showed that the Langmuir isotherm accurately reflects the adsorption process; the impact of numerous analytical parameters such as pH, equilibrium time, temperature, stripping agent, and diluents was rigorously investigated. The findings showed that 99.5%. The recovered solvent could be utilized in subsequent extractions. The results of batch equilibrium tests showed that the Langmuir isotherm accurately reflects the adsorption process; the impact of numerous analytical parameters such as pH, equilibrium time, temperature, stripping agent, and diluents was rigorously investigated. The findings showed that 99.5%. The regenerated solvent might be reused in further chromium (III) extractions. Finally, the process was used to extract Cr (III) from waste solutions from electroplating and leather tanning.