Aref Shokri

[ 1 ] - Degradation of Terphetalic Acid from Petrochemical Wastewater by Ozonation and O3/ZnO Processes in Semi Batch Reactor

Background & Aims of the Study: One of the toxic pollutants in the wastewater of petrochemical industries is Terphetalic acid. In this study, the degradation and mineralization of Terphetalic acid in aqueous environment were studied by Ozonation and O3/ZnO processes in a semi batch reactor. Materials & Methods: This study is an experimental research on a laboratory scale. The st...

[ 2 ] - Employing UV/H2O2 process for degradation of 2,4-Diaminotoluene in synthetic wastewater

Background & Aims of the Study: Toluene-2, 4-diamine (TDA) is a famous carcinogenic aromatic amine that is mostly employed as an intermediate in the production of dyes and toluene diisocyanate. In this study, degradation and mineralization of TDA were investigated by UV/H2O2 process. Materials & Methods: This study is an experimental investigation on a laboratory scale. T...

[ 3 ] - Application of Sonocatalyst and Sonophotocatalyst for Degradation of Acid Red 14 in Aqueous Environment

Background & Aims of the Study: Azo dyes are employed in industrial processes such as textile industry to create large quantities of colored sewages that have organic and non-organic materials. So, remediation of them is essential. In this project, degradation and mineralization of Acid red 14 (AR14) that is a mono Azo dye and widely used in the textile industries was investi...

[ 4 ] - حذف ترفتالیک‌اسید از پساب صنایع پتروشیمی با فرایند ازوناسیون در راکتورهای نیمه پیوسته

این مطالعه با هدف ارزیابی تصفیه پساب صنایع پتروشیمی حاوی ترفتالیک اسید جهت تخلیه به محیط زیست و استفاده مجدد از آن انجام شده است. در این پروژه، از فرآیند ازوناسیون جهت تخریب و معدنی‌سازی mg/L 60 از ترفتالیک‌اسید در راکتور نیمه پیوسته تحت شرایط میزان متغیر از ازون و pH، استفاده شده است. فرآیند ازوناسیون در pHهای 5، 7 ،9 و 11 انجام شده است. میزان تخریب آلاینده بعد از گذشت min 30 از ابتدای واکنش د...

[ 5 ] - حذف ارتو تولوییدین ازمحلول آبی با فرایندهای UV/H2O2 و UV/US/H2O2در واکنشگاه های چرخشی ناپیوسته و بررسی متغیرهای عملیاتی

یکی از آلاینده های مهم و سرطان زای موجود در پساب تعدادی از صنایع شیمیایی ارتو تولوییدین است. در این پروژه حذف ارتو تولوییدین با فرایندهای UV/H2O2 و UV/US/H2O2 در واکنشگاه های ناپیوسته چرخشی مورد مطالعه و بررسی قرار گرفته است. در فرایند UV/H2O2 در دمای ثابت 25 درجه سانتی گراد سه عامل مهم شامل غلظت اولیه ارتو تولوییدین، مقدار آب اکسیژنه و pH به عنوان متغیرهای تاثیرگذار بر فرایند مورد بررسی قرار گ...

[ 6 ] - Degradation of 4-Nitrophenol from industrial wastewater by nano catalytic Ozonation

ABSTRACT: In this project, a nano catalyst (TiO2) and ozone combined with each other and they were used for the removal of 4-nitrophenol (4NP) in industerial wastewater. The effect of some operational parameters such as initial pH (3-9), the concentration of pollutant (20-80 mg/L), and amount of TiO2 were investigated. In O3/TiO2 process, the anion radical formed before the production of hydro...

[ 7 ] - Degradation of 4-Nitrophenol from industrial wastewater by nano catalytic Ozonation

ABSTRACT: In this project, a nano catalyst (TiO2) and ozone combined with each other and they were used for the removal of 4-nitrophenol (4NP) in industerial wastewater. The effect of some operational parameters such as initial pH (3-9), the concentration of pollutant (20-80 mg/L), and amount of TiO2 were investigated. In O3/TiO2 process, the anion radical formed before the production of hydro...

[ 8 ] - Using Experimental Design to Optimize the Photo-degradation of P-Nitro Toluene by Nano-TiO2 in Synthetic Wastewater

In this project, the degradation of synthetic wastewater comprising p-nitro toluene (PNT) is investigated using UV/TiO2 process. PNT as a pollutant has a very harmful effect on the environment and human hormones. TiO2 is one of the best metal oxides it has photo catalyst role. The full factorial design (FFD) of experiment is employed to investigate the effect of working va...

[ 9 ] - Application of Electrocoagulation Process for the Removal of Acid Orange 5 in Synthetic Wastewater

IIn this study, the Electro Coagulation (EC) was used for the removal of acid orange 5 from synthetic wastewater in a batch electrochemical reactor. The impact of the operational variables such as current density, initial pH, time of electrolysis, and initial concentration of the dye was investigated. The results showed that the optimum conditions were obtained at initial pH of 7, curre...

[ 10 ] - Treatment of Aqueous Solution Containing Acid red 14 using an Electro Peroxone Process and a Box-Behnken Experimental Design

Background & Aims of the Study: Azo dyes utilized in industrial processes, such as the textile manufacturing, lead to the creation of huge amounts of colored wastewaters that contain non-organic and organic constituents. Therefore, it is necessary to search for remedies in this regard. This study investigated the degradation and mineralization of Acid red 14 (AR14), which is a mono Azo dye gene...

[ 11 ] - The Elimination of Toluenediamine from Aqueous Solution by Reverse Osmosis

Toluene diamine (TDA) is a main carcinogenic aromatic pollutant in some industrial wastewater. In this study, the reverse osmosis with DSS-HR98PP as the membrane was employed for the removal of TDA in an aqueous environment. The Box–Behnken Design (BBD) of the experimentwas used to consider the effect of operational variables such as pressure, pH and the feed volu...

[ 12 ] - بررسی مقایسه‌ای حذف نیتروفنل از پساب پتروشیمی کارون با فرایند الکتروفنتون و الکتروپرسولفات

در این پژوهش، حذف 4-نیتروفنل در محیط‌های آبی با روش الکتروپرسولفات و الکتروفنتون با الکترود آهن در یک واکنشگاه ناپیوسته الکتروشیمیایی در مقیاس آزمایشگاهی مجهز به چهار الکترود و منبع برق مستقیم بررسی شد. نتایج نشان داد که درصد حذف 4-نیتروفنل در فرایند الکتروپرسولفات و الکتروفنتون، در زمان60 دقیقه و شرایط بهینه به ترتیب 2/99 و 0/94 درصد بود. شرایط عملیاتی بهینه در pH برابر با 3، غلظت اولیه 4-نیت...

[ 13 ] - Kinetic Investigation of Degradation of 4-Nitrotoluene in Aqueous Environment by MnO2/Clinoptilolite/O3 Process

Background & Aims of the Study: 4-Nitrotoluene (4NT) is a toxic, resistant, and carcinogenic pollutant. The current study aimed to investigate the degradation and mineralization of 4NT regarded as one of the components of petrochemical wastewater using MnO2/Clinoptilolite (CP)/O3 process. The present study also examined the effect of several operational parameters. Materials and Methods: S...