Abstract
The most common effluent created by the oil industry is oily wastewater. This produced water (PW) corrodes the steel piles in the infrastructure of bridges, which shortens their service life. It is important to remove organic content in PW to prevent this outcome. Samples from the Ahdab oil field were used in this study. Two catalysts were selected: zinc oxide (ZnO) and titanium dioxide (TiO2) with photo presence as an energy source. The results were organic elimination of 96.4% and 93.4% using ZnO and TiO2, respectively. The experimental conditions were pH = 3 and an irradiation time of 120 min. Due to the ability of ZnO to adsorb high amounts of organic content from PW, there was an increased elimination of organic content. Hence, the maintenance of steel piles durability is a good alternative to approach the goals of this study. The results of the study demonstrated that the organic adsorption on a catalyst agent reinforced in nonappearance of radiation photo is insignificant.
Highlights
Organic Turbidity pH Solution oxygen concentration Specific gravity Conductivity TSS TDS Viscosity Fe SO4 Manganese Chrome
3.2. pH Effect. e photocatalytic technique is significantly affected by pH values. e pH effect on the degradation of organic content in produced water (PW) by photocatalytic processes is presented in Figure 4 for TiO2 and zinc oxide (ZnO), correspondingly
The experiments succeeded in getting the optimum pH of the reaction mixture to approach the best decomposition of organic content in PW. e results were in contrast with [31] because the photodegradation rate decreased as pH increased for PW
Summary
Organic Turbidity pH Solution oxygen concentration Specific gravity Conductivity TSS TDS Viscosity Fe SO4 Manganese Chrome. Advanced oxidation processes (AOPs) might be performed when PW contains high chemical stability and is not biodegradable. AOPs are usually applied using two methods: photochemical and nonphotochemical. E photochemical oxidation usually includes homogenous processes such as UV/hydrogen peroxide, vacuum UV photolysis, UV/ozone, photoFenton, UV/ozone/hydrogen peroxide, and heterogeneous processes such as photocatalysis. Nonphotochemical oxidation comprises ozonation at high pH Fenton and Fenton-like and ozone/hydrogen peroxide processes [24]. E aim of this treatment is the generation of free hydroxyl radical (OH), a highly reactive, nonselective oxidizing agent that can abolish even the recalcitrant contaminants [25]. E overall aim of this study is to remove organic content from the contaminated soil of the Al-Ahdab oil field in Iraq using photocatalytic oxidation processes. E second is to study the parameters that affect the photocatalytic process performance, including pH and irradiation time Nonphotochemical oxidation comprises ozonation at high pH Fenton and Fenton-like and ozone/hydrogen peroxide processes [24]. e aim of this treatment is the generation of free hydroxyl radical (OH), a highly reactive, nonselective oxidizing agent that can abolish even the recalcitrant contaminants [25]. e overall aim of this study is to remove organic content from the contaminated soil of the Al-Ahdab oil field in Iraq using photocatalytic oxidation processes. e first aim is to find the optimal catalyst agent dosage. e second is to study the parameters that affect the photocatalytic process performance, including pH and irradiation time
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