Abstract
Refinery wastewater is generated from the process of refining large amounts of oil. Oil refined wastewater contains micron-scaled emulsion droplets, and sub-micron droplets that are difficult to remove from water, which poses problems for researchers. Membrane technology is widely used in water treatment because it is very selective and effective in the filtration process. This research focuses on oil refinery water treatment using polysulfone (PSF) membrane ZnO nano composites modified with ultraviolet (UV) irradiation and polyvinyl alcohol. This membrane was prepared using the dry / wet phase inversion method. Then-the membrane was modified using UV irradiation and coated with polyvinyl alcohol (PVA). PSF-nano ZnO modifications have an impact on membrane performance; UV irradiation showed an increase in the value of membrane pure water flux from 4.5 Lm–2h–1 to 5.7 Lm–2h–1. However, after UV irradiation, the rejection value decreased after UV irradiation, whereas the presence of PVA as a coating agent increased the rejection value to 77.2 % for Total Dissolve Solid (TDS) rejection, 76 % for Chemical Oxyugen Demand COD rejection, and 65.3 % for ammonia rejection. This value was higher than that obtained for membranes without PVA coating, namely only 47.3 % for TDS, 51.1 % for (COD), and 29.4 % for ammonia rejection. Modifications with UV and PVA irradiation provide interrelated effects to improve membrane performance.
Highlights
Oil companies use large quantities of water during the process of refining crude oil
This research focuses on oil refinery water treatment using polysulfone (PSF) membrane ZnO nano composites modified with ultraviolet (UV) irradiation and polyvinyl alcohol
PSF-nano ZnO modifications have an impact on membrane performance; UV irradiation showed an increase in the value of membrane pure water flux from 4.5 Lm–2h–1 to 5.7 Lm–2h–1
Summary
Oil companies use large quantities of water during the process of refining crude oil. Other research related to the purification of oil refined water waste by torma Treating refinery water with traditional methods such as adsorption and absorption cannot eliminate droplets, micro-droplets and sub-micro droplets emulsions effectively [3]. Membrane technology is the best way to eliminate the micro and sub micro sized oil droplets in wastewater [6]. Kiss et al [7] has used cross flow membrane filtration system in refinery water treatment. Safari et al reported on [8] conducted a cross-flow microfiltration filtration process for oil refinery wastewater using a ceramic membrane material (Al2O3) with a pore size of 50 nm.
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