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The purpose from testing studies to discovery out the efficiency of CKD from Al-Muthana city Iraq government to removal Methylene Blue Dye (MB) in simulated textile wastewater generated from Al-Diwaniya textile factory in Al-Diwaniya city Iraq government. The wastewater discharge from textile industries that contain methylene blue dye is removed by adsorption through cement kiln dust, therefore, was studied this case. The best electrostatic action is the basic action between methylene blue and cement kiln dust. As cement kiln dust has especially nanostructure properties and the negative charge for his plane, the positive charge for methylene blue compound ability for simply adsorb above it. [ABSTRACT FROM AUTHOR]

The Reduced Crude Residue R.C.R it's product by atmospheric distillation unit from crude oil in Al-Diwaniya refinery, where product from the bottom of distillation tower at 300 °C in atmospheric distillation unit. For Production of Light Petroleum fractions from Reduced Crude Residue R.C.R by Cracking Reaction. Thermal cracking of residual crude residue oil (R.C.R) was conducted in a high-pressure batch reactor was carried out in an autoclave under different process conditions, temperature about 350–450 °C, thermal cracking time 60–120 minute and pressure 1–5 bar in the existence of Nitrogen. Statistical program design of testing its Response Surface Methodology (RSM)byBox-Behnken(BB) was used to predict the effect of necessary changing in the thermal cracking of residual crude residue (R.C.R), and to gain the process conditions best. Based on the three level factorial design, cubist model was progressing between the thermal cracking conditions to total production, the more influential operator for all testing design response was selected. The predictedconversion and yields of total distillate liquid, gas, coke and residue were found to agree satisfactory with the experimental value. When the reaction pressure was increased, the heavy distillate yield decreased with increasing yields of lighter distillates, another interpretation and when increased pressure will improved the quality while decreased the yield. At temperature 400 °C, pressure 1 bar and longer residence time(2 h) the best test to get the maximumyield of the liquid phase product and gas phase product. The better run for quality when temperature 400 °C, pressure 5 bar and 120 minute as running time depended on API, sp.gr, density, viscosity and flash point. The optimum condition the pressure 3.3 bar, temperature 442.92 °C and cracking time its 112.72 min. [ABSTRACT FROM AUTHOR]