Abstract
The current study aimed to investigate the elimination of dyes from sewerage, using microfiltration membrane mechanism. Three dyes were applied, acid yellow-23, disperse blue -79 and acid orange -7. Experiments were performed with feed concentration (40 -120) ppm, feed flow rate (25 -65) l/h and time (0.25 -1.5) h. The membrane used ceramic membrane, constructed as a candle. It was discovered that water flow diminishes with an elevation in running time, feeding oil concentration and enhancing with elevation in the feed flow rate. In addition, it was determined that the elimination (rejection) rate of dyes enhances with elevation in the flow rate, and the elimination (rejection) rate diminishes as time passes. In cross flow microfiltration, the rejection concentration (concentrate) goes up as time passes, with high feed concentration and flow rate. It was also discovered that the modal infusion concentration declines with high feed concentration and working time. In addition, it was found that product rate goes down as time passes and with high feed concentration. Increasing feed concentration of dyes was associated with an increase in the concentration of rejecting solution. The highest elimination of disperse blue -79, Acid Yellow- 23 and acid orange -7, are 97%, 96.4% and 95.8%, respectively. The maximum recovery percentage of disperse blue - 79, acid yellow- 23 and acid orange -7are 57.7%, 58.5% and 59% respectively.
Highlights
The current study aimed to investigate the elimination of dyes from sewerage, using microfiltration membrane mechanism
As a stable wastewater needed during the experiment, only small amounts of dyes were added to the water
As the Concentrate feeding dye increased, it looked that the water stream across the membrane decreased, and the product rate diminished as shown in figure 2
Summary
The current study aimed to investigate the elimination of dyes from sewerage, using microfiltration membrane mechanism. The rejection concentration (concentrate) goes up as time passes, with high feed concentration and flow rate. It was found that product rate goes down as time passes and with high feed concentration. Membrane mechanism, including NF (nan filtration), RO (reverse osmosis), UF (ultrafiltration) and MF (microfiltration) are applied worldwide to ultra-pure and potable water manufacturing, desalination of seawater, chemical process separations. Polyethersulfone ency of separat (PES) ion pr [12] In ocesses this for membrane (Microfiltration) for treatment of dyes in drainage water, and reduction of dyes’ content in high permeate and permeate flow, were investigated. The effects of working determinants, including the feed flow rate, dyes concentration, time and different types of dyes in a MF section were examined. The permeation flow of particle-free water through an uncluttered membrane can be explained, using Darcy’s law as:
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