M.Sc.

This work aims to study the influence of some additives on the properties of soap greases, such as lithium, calcium, sodium, lithium-calcium by adding first: additives including graphite,molybdenum disulfide, carbon black, corrosion inhibiter and extreme pressure, second: base stock oils 40, 60, 150.Various additives have been added to greases to obtain the best percentages that improve the properties of grease such as load carrying, wear resistance, corrosion resistance,drop point and penetration.The result showed the best weight percentages to all types of gre

A Theoretical  and experimental investigation was conducted to study recovery of vanadium from spent catalyst via leaching process using sodium hydroxide to investigate the effect of process variables on vanadium recovery and study kinetic of recovered  was investigated by determining the controlling step.The effect of process variables (temperature, particle size,molarity of sodium hydroxide and leaching time) on the percentages of vanadium recovery were investigated and it was found that the percentage of vanadium recovery increased with:

The present study is to analyze and model concentration polarization in spiral wound brackish water membrane elements. The aim of the present work is to study the effect of different operating parameters on the reverse osmosis system which are feed flow rate, feed concentration, and feed temperature on permeate concentration and mass transfer coefficient for the brackish water system.