The Performance Operation of Zeolite as Membrane with using Laundry Waste Water
Journal of Membrane Science & Technology
hours to precipitate KCl crystals formed. The precipitate is removed; the solution is taken, filtered, and dried. Results zeolite that has been purified white powdery substance. Preparation of membrane Preparation of membrane is divided into two steps. The first step is to weigh as much as 3 grams and 6 grams of powdered zeolite. Zeolite powder put in a centrifuge bottle and then added 35 ml of 2-propanol. The mixture was then centrifuged for 10 minutes at a speed of 600 rpm. After that, the
... After that, the supernatant liquid on a white precipitate was removed and put in a glass beaker containing a mixture of 3.5 g NH 4 Cl and 200 ml of distilled water. The mixture is then stirred using a magnetic stirrer for 1 hour. The next stage is the mixing of sediment mixing zeolite with NH 4 Cl solution, distilled water, PVA (poly vinyl alcohol) and PEG (polyethylene glycol). The solution is heated until all ingredients are mixed with smooth and thickened. After the solution has thickened then printed using a small petri dish and left for 30 hours to dry. Dry membranes are browned and available for use. Membrane test in crossflow reactor In this research, we used three variations concentration of Abstract Zeolites are used as raw material to make nanofiltration membrane because they are easily obtained and cheap. The used of zeolite membranes can be an alternative wastewater treatment. One of the potential alternatives for wastewater treatment is nanofiltration membranes with pore size of 0.001 µm filtered high organic content of laundry which contained high turbidity and phospate. The content of turbidity and phosphate in the laundry wastewater is needed to treat before being discharged into river. The purpose of this study is to determine the value of rejection and flux for each variation of concentration. Variation of concentration that used were pure wastewater which dilluted with tap water in ratio 100%, 75%, and 50%. Based on this research, the characteristics of laundry waste water before filtration process are turbidity parameters showed for 100%, 75% and 50% are 151 NTU, 146 NTU, 143 NTU and for phosphate parameters are 31.30 mg/L, 25.8 mg/L and 11.49 mg/L. After filtration process, the highest rejection value of turbidity for each dilluted concentrations 100%, 75%, 50% are 88.46%, 87.82%, 87.58%. The highest flux value for each dilluted concentrations 100%, 75% and 50% are 7,22 L/m 2 .hour, 8,49 L/m 2 .hour and 11,04 L/m 2 .hour.