Removal of Selected Micropollutants from Synthetic Wastewater by Electrooxidation Using Oxidized Titanium and Graphite Electrodes

Abstract

Micropollutants cover a variety of compounds that mainly originate from the pharmaceutical and agricultural sectors. Even at trace concentrations, the discharge of micropollutants into water bodies pose a serious threat to the environment and human health. Their removal from wastewaters at treatment plants before their discharge into the environment has become one of the leading topics of research. Physical, chemical, and biological treatment methods have been listed in the literature for efficient removal of a variety of pollutants. In this study, seven micropollutants, namely 4‐tert‐octylphenol, atrazine, 2,4,6‐trichlorophenol, fluoxetine, estrone, penconazole, and di‐n‐octyl phthalate, are spiked into municipal simulated synthetic wastewater and treated by a laboratory‐scale electrooxidation (EO) system using oxidized titanium and graphite electrode as anode and cathode, respectively. Sensitive determination of the selected micropollutants by gas chromatography–mass spectrometry (GC‐MS) before and after treatment is performed after their pre‐concentration using an eco‐friendly switchable solvent liquid‐phase microextraction method (SSLPME). The pH value, applied current, and reaction period are optimized to enhance the removal efficiency of micropollutants. Results show that the highest removal efficiency of all micropollutants is obtained at pH 3, 20 min reaction period, and 3 A applied current. The operational costs are also investigated in this study.

Comparative study of degradation of pharmaceutical and personal care products in wastewater by advanced oxidation processes: Fenton, UV/H2O2, UV/TiO2

“…Pharmaceutical and personal care product (PPCP) is a general term for micropollutants that refers to various therapeutic categories of contaminants such as drugs, hormones, cosmetics, and other personal hygiene products. [ 1,2 ] In the process of transferring these PPCPs to the environment, wastewater treatment plants (WWTPs), in particular, are considered important hotspots. [ 3 ] Additionally, several recent studies have determined that some of these micropollutants, at concentrations specific to wastewater discharges, can have serious long‐term effects on aquatic organisms.…”

Electrochemical Treatment of a Real Textile Wastewater Using Cheap Electrodes and Improvement in Cod Removal

“…Technologies based on Electrochemical Advanced oxidation processes (EAOPs) have attracted a lot of attention in recent years as promising and high-efficiency technologies for textile wastewater treatment (TWWT) (Zou et al 2020). The main advantages of these technologies are the safety of the process, no sludge formation, simple equipment design, ease of automation, progressive reaction with electrons, moderate or low construction cost, and effective mineralization of pollutants (Turan et al 2020). In addition to all these, electrochemical techniques are clean and green technologies with the advantages of using electrons instead of chemicals in reactions, short reaction times, and widespread use of renewable energy sources for energy needs, which is one of the main cost items.…”

Determination of Titanium in Zinc ash by FAAS After Digested using Ultrasound-Assisted Extraction

“…Solvent extraction, ionexchange, ultrasound-assisted extraction and adsorption were investigated the digestion technique for removal of heavy metals from natural samples by many researchers [12][13][14][15][16][17][18]. In this study was used the ultrasound-assisted extraction as digestion technique.…”