Asst. Prof. Dr. Khalid Turki Rashid participated in a committee to discuss a doctoral thesis in the Department of Civil Engineering / University of Technology, entitled (Study of the cherestestics and separation performance for composite nano-membranes to remove dye pollutants from simulated wastewater) by student Rana Jawad Kazem, on Thursday, 9/9/2021. The thesis included the preparation of filter membranes using a polymeric polyether sulfone PES with the addition of a porous MCM-41 zeolite, which has the potential to reduce membrane contamination by organic dyes particles, which is considered the main problem in leather tanning and textile industries and successfully manufactured using the phase inversion method at several ratios (0, 0.1, 0.3, 0.5, 0.7, 0.8 and 1%). The properties of osmotic films were investigated through a series of investigations (scanning electron microscopy (SEM), atomic force microscopy (AFM), infrared spectroscopy (FT-IR), contact angle measurement, porosity, thickness, roughness, pore size, properties Mechanical and membrane-removal efficiency of dyes) for the evaluation of composite membranes. All the modified films showed significant improvement in their hydrophobicity, roughness, porosity, and mechanical strength.