University Of Tehran Press Pollution 2383-451X 4 3 2018 07 01 Optimization of Soil Aquifer Treatment by Chemical Oxidation with Hydrogen Peroxide Addition 369 379 69561 10.22059/poll.2018.247639.354 EN Muhammad Usman Institute of water resources and water supply, TUHH Hamburg, Germany 0000-0002-8977-7523 Muhammad Waseem Faculty of agriculture and environmental sciences, Universität Rostock, Germany 0000-0001-9442-5664 Nithish Mani Sahasrara Earth services & Resources Ltd, Coimbatore, India George Andiego Water resources and environmental services department, Nairobi, Kenya Journal Article 2017 12 09 Trace organic compounds (TrOCs), mostly found in secondary effluents have a potential impact on the environment including surface water, groundwater and especially aquatic ecosystems. This study focuses on oxidation of five selected TrOCs in column experiments simulating soil aquifer treatment (SAT) integrated with Fenton like reaction using granular ferric hydroxide (GFH) as a catalyst. In order to determine the effectiveness of removing TrOCs by water through this approach, experiments were carried out with ultrapure water containing different target compounds at pH 6 using different dosages of hydrogen peroxide and catalyst. In this study the optimal concentration of hydrogen peroxidefor removal of TrOCs was found to be 200 mg/L. However, observed overall removal was low for each target compound. Moreover, little increase in chemical oxidation of micropollutants was observed by increasing dosage of the catalyst. For an optimum concentration of hydrogen peroxidethe removal of 33, 34, 28, 29 and 35% were observed for benzotriazole, carbamazepine, phenytoin, primidone and meprobamate, respectively in 5h with a hydraulic retention time of 3h, respectively. Therefore, this treatment scheme might not be a promising option for oxidation of secondary effluents. Thus, other treatment options, such as decrease of pH, recirculation of effluent through columns to increase the hydraulic retention times, other types of catalyst and higher dosage of hydrogen peroxide need to be considered for more efficient removal of TrOCs within SAT integrated with Fenton-like. https://jpoll.ut.ac.ir/article_69561_25665430fad50597c24dd4f5d5b785c6.pdf