Removal of pesticides from secondary treated urban wastewater by reverse osmosis

Yetiş, Ülkü
Dilek, Filiz Bengü
The residues of pesticides that reach water resources from agricultural activities in several ways contaminate drinking water resources and threaten aquatic life. This study aimed to investigate the performance of three reverse osmosis (RO) membranes (BW30-LE, SW30-XLE, and GE-AD) in rejecting four different pesticides (tributyl phosphate, flutriafol, dicofol, and irgarol) from secondary treated urban wastewater and also to elucidate the mechanisms underlying the rejection of these pesticides. RO experiments were conducted using pesticide-spiked wastewater samples under 10 and 20 bar transmembrane pressures (TMP) and membrane performances were evaluated. Overall, all the membranes tested exhibited over 95% rejection performances for all pesticides at both TMPs. The highest rejections for tributyl phosphate (99.0%) and irgarol (98.3%) were obtained with the BW30-LE membrane, while for flutriafol (99.9%) and dicofol (99.1%) with the GE-AD membrane. The increase in TMP from 10 to 20 bar did not significantly affect the rejections of all pesticides. The rejection performances of RO membranes were found to be governed by projection area as well as molecular weight and hydrophobicity/hydrophilicity of pesticides. Among the membranes tested, the SW30-XLE membrane was the most prone to fouling due to the higher roughness.


Removal of Pesticides from Wastewater by Membrane Proces
Ateş, Nuray; Uzal, Niğmet; Yetiş, Ülkü; Dilek, Filiz Bengü (2021-06-23)
Purpose: The aim of this study was to investigate the removal performances of four pesticides (tributyl phosphate, flutriafol, dicofol and irgarol) by RO membranes. Methods: Three different RO membranes (BW30-LE, SW30-XLE and GE-AD) were used to reject pesticides in two transmembrane pressures of 10 and 20 bar in bench-scale membrane filtration cell. Tributyl phosphate and flutriafol were detected by GC/MS and dicofol and irgarol were monitored by HLPC instruments. Results: While the highest removal of trib...
Removal of Pesticide from Water with Fenton-like Process: Effectiveness of a new heterogeneous catalyst (Fenton Benzeri Proses ile Sulardan Pestisit Giderimi: Yeni bir heterojen katalizörün etkinliğinin araştırılması)
Dilek, Filiz Bengü(2017-12-31)
Extensive utilization of pesticides in the form of herbicides, fungicides, insecticides result in surface water pollution through runoff from agricultural lands and urban discharges. Besides, their very low concentrations (μg/L or ng/L) in surface water bodies and in domestic wastewaters, removal of these pollutants in Wastewater Treatment Plants (WWTPs) are recommended due to being highly persistent, toxic, bio-accumulative and hence dangerous for aquatic ecosystems. Advanced oxidation processes (AOPs) are...
Removal of THM precursors by GAC: Ankara case study
Capar, G; Yetiş, Ülkü (2002-03-01)
The effectiveness of granular activated carbon (GAC) adsorption for the removal of natural organic matter and trihalomethanes from Ivedik Water Treatment Plant of Ankara City is investigated. Freundlich Isotherm constants K and n were determined as 17.61 and 1.66, respectively. Bench-scale GAC columns were run with empty bed contact times (EBCT) varying from 0.40 to 2.67 min to evaluate adsorption performance. 50% exhaustion values were used for comparison. The treated volumes of water increased with EBCT, ...
Removal of nitrate from groundwater by using algae culture
Tuna Öztürk, Eda (2017-01-01)
Although groundwater is more reliable and clean water resource when it is used as a drinking water, it is difficult to treat once it is polluted. One of the most important pollution paremeters in groundwater is nitrate which might be discharged by domestic or industrial wastes, agricultural activities, fertilizers and animal wastes. Even though denitrification, ion exchange, reverse osmos are widely used treatment methods for nitrate removal, biological treatment methods have effectively been also used. Nit...
Removal of imidacloprid from wastewaters by ozonation and photo-ozonation
Sönmez, Büşra; Dilek, Filiz Bengü; Department of Environmental Engineering (2019)
The widespread occurrence of micropollutants in the receiving water bodies apparently shows that conventional wastewater treatment plants (WWTP) are not capable to remove these compounds. Imidacloprid (IMI), which is a specific pollutant and an insecticide, exceeded Environmental Quality Standards (EQS) value (0.14 µg/L, annual average) in several receiving water bodies of WWTPs in Yeşilırmak basin. With the aim of examining advanced treatment methods to meet EQS value and to achieve good surface water qual...
Citation Formats
N. ATEŞ, N. UZAL, Ü. Yetiş, and F. B. Dilek, “Removal of pesticides from secondary treated urban wastewater by reverse osmosis,” ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH, pp. 0–0, 2022, Accessed: 00, 2022. [Online]. Available: