Abstract
In this work, the treatment of oily wastewater was investigated using developed cellulose acetate (CA) membranes blended with Nylon 66. Membrane characterization and permeation results in terms of oil rejection and flux were compared with a commercial CA membrane. The solution casting method was used to fabricate membranes composed of CA and Nylon 66. Scanning Electron Microscopy (SEM) analysis was done to examine the surface morphology of the membrane as well as the influence of solvent on the overall structure of the developed membranes. Mechanical and thermal properties of developed blended membranes and a commercial membrane were examined by thermogravimetric analysis (TGA) and universal (tensile) testing machine (UTM). Membrane characterizations revealed that the thermal and mechanical properties of the fabricated blended membranes better than those of the commercial membrane. Membrane fluxes and rejection of oil as a function of Nylon 66 compositions and transmembrane pressure were measured. Experimental results revealed that the synthetic membrane (composed of 2% Nylon 66 and Dimethyl Sulfoxide (DMSO) as a solvent) gave a permeate flux of 33 L/m2h and an oil rejection of around 90%, whereas the commercial membrane showed a permeate flux of 22 L/m2h and an oil rejection of 70%.
Highlights
Industrialization has given birth to many problems like increased greenhouse gas emissions, environmental pollution, and energy crises [1,2,3]
Cellulose acetate membranes reinforced with Nylon 66 were successfully fabricated with the solution casting technique
The developed membranes were subjected to extensive characterization in terms of surface analysis, flux permeation, oil rejection, thermal analysis, and mechanical analysis
Summary
Industrialization has given birth to many problems like increased greenhouse gas emissions, environmental pollution, and energy crises [1,2,3]. Water is indispensable for the existence and survival of life on earth. In the past few years, the world has faced severe scarcity in water resources. Extreme drought periods, upsurge in population, and water pollution [4] have resulted in a global concern about secure drinking water supply. Polluted water is a threat to the life of humans, animals, and plants both ashore and in the oceans. The situation will get worse if timely actions are not taken to combat the issue of water pollution, which would be a hindrance for the sustainable development of society [5].
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