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In this work, the mass transfer of aluminum ions in the electrocoagulation reactor was investigated using limiting current density technique by employing a novel rotating impeller anode. The effect...

Imperon Violet KB dye is detected in the wastewater discharges of the Baghdad governorate's textile industries. The purpose of this research is to investigate the electrocoagulation degradation of the textile dye Imperon Violet KB in an aqueous solution with an initial concentration of 100 mg/L. The impact of EC operative factors including density of current, touch time, pH, concentration of initial dye and electrolysis support was explored. When the current density is 1.43 mA/cm2, the duration is 20 min, and the primary pH is 6, the results are peak. Color, turbidity and COD elimination efficiencies were 95 percent, 99.5 percent, and 85 percent, respectively. The final pH varies depending on the original pH with a constant density of current and variable passage time. The color removal efficiency is clearly reduced at high initial concentrations. The effect of using NaCl as an electrolysis help resulted in an improvement in conductivity and voltage. When using a concentration of 1.6 g/L of NaCl, the color removal efficiency is 95.5 percent. The kinetic analysis revealed that the dye degrades according to a second-order rate equation.

An integrated linear regression technique was developed and validated to model dissolved oxygen in salt lakes by using R software and based on data from Sawa Lake, Iraq. The technique helps understand and evaluate salty aquatic ecosystems in the presence of water quality data gaps. The technique involved selecting the important water quality parameters that have significant statistical relationship with dissolved oxygen. In order to make the regression development simpler, the validation approach was incorporated with the model. Linearity, homogeneity, normality, outliers, and influential data points were verified. The simulation approach was also capable of displaying the interaction between the selected water quality parameters and the other insignificant parameters. The statistical analysis results indicated that dissolved oxygen in salt lakes is a function of total dissolved solids. The developed model represented dissolved oxygen with R-squared of 90.73% and p-value of 1.08E-06. Furthermore, the model results showed that the influence of salty ions on dissolved oxygen/total dissolved solids model is the same. It was found that temperature has a significant impact on the developed dissolved oxygen model. In addition, the model simulation revealed that salt melting surrounding the lake due to temperature variation during the year cycle increased total dissolved solids in the lake water. Consequently, the lake dissolved oxygen levels were impacted.