TY - JOUR ID - 2657 TI - Advanced oxidation processes against alkyl phenols in groundwater samples JO - Caspian Journal of Environmental Sciences JA - CJES LA - en SN - 1735-3033 AU - Zaribafan, A AU - Baharlouie Yancheshmeh, M AU - Fathi, T AU - Ahmadkhani, R AU - Haghbeen, K AD - National Institute of Genetic Engineering and Biotechnology, Tehran, Iran AD - Department of Soil and Water Pollution, Environmental Protection Organization of Iran, Tehran, Iran AD - Pharmaceutical Sciences Research Center, Tehran University of Medical Sciences, Tehran, Iran Y1 - 2017 PY - 2017 VL - 15 IS - 4 SP - 343 EP - 355 KW - Alkylphenols KW - Underground water KW - Ozone KW - UV radiation KW - Hydrogen peroxide DO - 10.22124/cjes.2017.2657 N2 - Spectrophotometric examinations showed the presence of phenolic compounds in the organic residue collected from four groundwater resources located in vicinity of an oil refinery at the outskirt of Tehran. The average concentration of total phenolic compounds was about 0.38 mg.L-1 in these samples using Folin-Ciocalteu method. GC-Mass analysis disclosed that alkylphenols were the major phenolic contaminants in the samples. Evaluation of the Advanced Oxidation Processes (AOPs) efficacy for removal of alkylphenols from real water samples is a hot topic of recent Environmental Research due to the decomposition of these compounds in soil and by microorganisms which may results in the formation of structures more resistance against various types of oxidation. To explore the efficacy of AOPs for removal of alkylphenols from the examined groundwater resources, the optimal conditions for three important AOP including Fe2+/H2O2/UV (Photo-Fenton), O3/UV and O3/UV/H2O2 were first sought using a recalcitrant lab sample containing different aromatic compounds with total concentration of 2 mg L-1. Consequently, two methods of O3/UV (2 mg L-1 O3, 15 min UVC), and O3/UV/H2O2 (2 mg L-1 O3, 5000 mg L-1 H2O2, 15 min UVC) were selected to be examined on the real samples. Although the selected methods were quantitatively effective on the lab sample, they resulted in average removal efficiencies of 79.71% and 84.16% on the real samples, respectively. With respect to the safety regulations, costs and easiness of implementation, the O3/UV method seems to be more promising for large-scale plans. UR - https://cjes.guilan.ac.ir/article_2657.html L1 - https://cjes.guilan.ac.ir/article_2657_9ec9dc7c3acac147c10dbbb8a61153bb.pdf ER -