نتایج جستجو برای: heterogeneous catalytic ozonation process

تعداد نتایج: 1485549  

2012
Olga Gimeno Javier Rivas Angel Encinas Fernando Beltran

The elimimation of mefenamic acid has been carried out by photolysis, ozonation, adsorption onto activated carbon (AC) and combinations of the previous single systems (O3+AC and O3+UV). The results obtained indicate that mefenamic acid is not photo-reactive, showing a relatively low quantum yield of the order of 6 x 10 mol Einstein. Application of ozone to mefenamic aqueous solutions instantane...

2014
Jan Derco Angelika Kassai Michal Melicher Jozef Dudas

The feasibility of ozonation process for 2-mercaptobenzothiazole (2-MBT) removal follows from results of ozonation of the model wastewater. Total removal of 2-MBT was observed after 20 minutes of ozonation. Very good reproducibility of repeated ozonation trials including sampling and analysis was observed. However, the majority of dissolved organic carbon (DOC) and chemical oxygen demand (COD) ...

Journal: :Nature chemistry 2010
Cole A Witham Wenyu Huang Chia-Kuang Tsung John N Kuhn Gabor A Somorjai F Dean Toste

A continuing goal in catalysis is to unite the advantages of homogeneous and heterogeneous catalytic processes. To this end, nanoparticles represent a new frontier in heterogeneous catalysis, where this unification can also be supplemented by the ability to obtain new or divergent reactivity and selectivity. We report a novel method for applying heterogeneous catalysts to known homogeneous cata...

ژورنال: طلوع بهداشت یزد 2016
ابراهیمی, اصغر, احرامپوش, محمدحسن, ترابی, حسن, طالبی, پروانه, مختاری, مهدی,

Introduction: Carwash are industries that consume large amounts of water and results wastewater that have different type of pollutents(detergents, oil and grease, metals, etc.).  Enough treatment of carwash wastewater is important and could be protect surface and ground water. Therefore, in this study ozonation process was used for carwash wastewater that generated from washing the cars in...

آقاپور , علی احمد, یغمائیان, کامیار, موسوی, سیدغلامرضا ,

Background & Aims: Catechol, a phenolic compound, is carcinogenic and toxic and enters the environment through industrial waste. The main objective of this paper was to evaluate the performance of the ozone in the removal of catechol from water. Materials & Methods: Catechol concentration was determined using a high-pressure gas chromatography (HPLC). Concentration of ozone and chemical oxyg...

Journal: :Journal of environmental sciences 2007
Abdullah Yasar Nasir Ahmad Aamir Amanat Ali Khan Anwer Yousaf

This research was focused on the investigation of the efficacy of advanced oxidation processes (Fenton, ozonation and UV/H2O2) for decolorization of reactive azo dye (Blue CL-BR) using bleach wastewater as possible source of H202. All the experiments were performed on the laboratory scale set-up. The results showed that colour removal efficiencies by UV or bleach (H2O2) alone were not so effici...

Journal: :Journal of environmental science and health. Part A, Toxic/hazardous substances & environmental engineering 2014
Azahara Espejo Almudena Aguinaco Ana M Amat Fernando J Beltrán

Removal of nine pharmaceutical compounds--acetaminophen (AAF), antipyrine (ANT), caffeine (CAF), carbamazepine (CRB), diclofenac (DCF), hydrochlorothiazide (HCT), ketorolac (KET), metoprolol (MET) and sulfamethoxazole (SMX)-spiked in a primary sedimentation effluent of a municipal wastewater has been studied with sequential aerobic biological and ozone advanced oxidation systems. Combinations o...

Journal: :تحقیقات نظام سلامت 0
حسین موحدیان عطار استاد، مرکز تحقیقات محیط زیست، دانشگاه علوم پزشکی اصفهان، اصفهان، ایران. محسن سعدانی دانشجوی کارشناسی ارشد، مرکز تحقیقات محیط زیست، دانشگاه علوم پزشکی اصفهان، اصفهان، ایران. مهدی حاجیان نژاد دانشیار، مرکز تحقیقات محیط زیست، دانشگاه علوم پزشکی اصفهان، اصفهان، ایران. مریم فرجی دانشجوی کارشناسی ارشد، مرکز تحقیقات محیط زیست، دانشگاه علوم پزشکی اصفهان، اصفهان، ایران.

background: crude oil is a very complex composition with harmful effects in human health such as carcinogenesis and blood effects. using the bioassay method to assess the effect of purification process produces useful results. in this study the effect of ozonation to reduce the toxicity of crude oil in the water is investigated. methods: standard sample of the water soluble fraction were prepar...

نمودار تعداد نتایج جستجو در هر سال

با کلیک روی نمودار نتایج را به سال انتشار فیلتر کنید