International Journal of Engineering and Advanced Technology (IJEAT) ISSN: 2249 – 8958, Volume-9 Issue-3, February, 2020 3034 Retrieval Number: C5940029320 /2020©BEIESP DOI: 10.35940/ijeat.C5940.029320 Published By: Blue Eyes Intelligence Engineering & Sciences Publication Abstract: Microorganisms and algae growth on surface water are stimulated in surface water in the presence of effluent wastewater from edible oil industries. This leads to depletion of dissolved oxygen (DO) by eutrophication process result in negative impact on aquatic environment. The new regulation in environment agency and increasing market demand are forcing the industrial sectors to consider finding new solutions and sustainable techniques of the wastewater treatment. In this study, reverse osmosis (RO) membrane filtration has been applied to assess the removal performance of emulsified oil from wastewater. Polysorbate 20 (Tween 20) was used as an oil/water emulsifier. Effect of oil concentrations in terms of chemical oxygen demand (COD) and activated carbon unit on removal efficiency and permeate flux have been studied in details. The results elucidated significant improvement in removal efficiency reached to "98%". The obtained results show promising application of RO membrane (polyamide membrane) at flux "17 L/m2 hr-1". The experiments showed that membrane filtration of wastewater from edible oil is a convenient technique for a possible removal of high concentration of oil (up to 6000 mg/L) with "98%" removal efficiency at permeate flux "17 L/m2 hr-1 "and low fouling rate. Keywords: Edible oil effluent, Reverse osmosis, COD, Removal efficiency. I. INTRODUCTION The wastewater from edible oil factories mostly produced from the degumming, de-acidification and de-odorization unites [1]. Also blow down of the boiler and washing water that comes from de-oiling of the earth bleaching take part in the effluents in little quantities. Revised Manuscript Received on February 15, 2020. * Corresponding Author Mohamed Bassyouni*, Department of Chemical Engineering, Faculty of Engineering, Port Said University, Port Said, 42526, Egypt & Materials Science Program, University of Science and Technology, Zewail City of Science and Technology, October Gardens, 6th of October, Giza, 12578, Egypt. Sarah Elhady, Department of Sanitary and Environmental Engineering, high Institute of Engineering and Technology, New Damietta, Egypt. R. A. Mansour, Department of Chemical Engineering , Higher Institute of Engineering and Technology, New Damietta, Damietta Egypt Medhat H. Elzahar, Sanitary and Environmental Engineering, Faculty of Engineering, Port Said, 42526, Egypt & Department of Civil Engineering, Giza Engineering Institute, Egypt Mamdouh Y. Saleh, Sanitary and Environmental Engineering, Faculty of Engineering, Port Said, 42526, Egypt & High Institute of Engineering and Technology, El-Manzala, Ad Daqahliyah, Egypt Until that time, the wastewater discharged direct from edible oil factories into soil and ground water. But, because of the advent of environmental water awareness, the Pollution Control systems have ended up severer and force very tough rules. As well as, Lack of water is other reason for wastewater treatment. For the edible oil wastewater treatment by usual techniques as aerobic or anaerobic breakdown the proportion of BOD to COD would be more than 0.60 [2]. Nevertheless, the wastewater from edible oil factories commonly has its BOD to COD proportion about 0.2 that would lead to damage of micro-organisms beneficial for breaking down. There are many commonly used methods in separation of oil-water treatment. Separation using gravity settling and mechanical techniques are recognized usual methods for treatment, the performance of that based on oil droplets size in effluents. Chemical breaking of emulsion is an active method below suitable usage [3], [4]. Also there were other edible oil separation techniques as air flotation, coagulation [5], [6], and electrocoagulation [7], [8]. On the other hand, these techniques result in massive amount of sludge, difficult procedures, highly energetic and expensive. These drawbacks highlight the necessity for more research using novel separation techniques. Separation using membrane technique has high acceptance through the latest years and becomes an auspicious technique. This technique has numerous benefits as stable permeate characteristic and minor space need. Furthermore no chemical is wanted to be added. Several researches of separation using membrane for treatment edible oil effluents were recorded [9], [10]. Membrane technology showed good performance while used in several wastewater treatment techniques [11], [15]. Reverse osmosis membrane (RO) was used in treatment of varied industrial wastewater [16], [20]. In this paper, the edible oil was separated from effluents by the reverse osmosis (polyamide). Effect of edible oil concentration in feed and effect of pre-treatment on permeate; turbidity and COD rejection efficiency were studied. II. EXPERIMENTAL A. Materials  Synthetic edible oil wastewater was setup by mixing 1ml of non-ionic surfactant Tween20 to a 5ml of soybean edible oil and 1L of de-ionized water and mixed for "3.5hr" using electric mixer "300 rpm" at mixing. The mixture had a uniform white color. After preparation the emulsion, it was left to observe its stability. Developed Method for Treatment of Industrial Wastewater from Edible Oil Industry using Membrane Technology Sarah Elhady, M. Bassyouni, R. A. Mansour, Medhat H. Elzahar, Mamdouh Y. Saleh