Triclosan removal by NF from a real drinking water source - Effect of natural organic matter

Nanofiltration (NF) is known as a very effective technology in the removal of micropollutants from surface water for drinking water purposes. In this study, NF of triclosan (TCS) which is a commonly used biocide in many different domestic and industrial applications was investigated in relation to its interaction with natural organic matter (NOM). A laboratory scale cross-flow device was operated in total recycle mode using a thin-film composite membrane with a real surface water. The effect of NOM content on TCS removal was elucidated through addition of humic acid (HA) into raw water. The performance of the membrane was evaluated by TCS retention, as well as flux behavior. The results showed that NOM had a positive effect on TCS removal due to TCS-HA complex formation that limits TCS permeation through the membrane. On the other hand, NOM was found to increase Molecular weight cut off (MWCO), but not resulting in a decrease in TCS rejection due to HA-TCS complex formation. NOM lead to an increase in TCS removal mainly by sorption into the membrane.


Triclosan removal from surface water by ozonation - Kinetics and by-products formation
ORHON, kemal berk; ORHON, aybala koc; Dilek, Filiz Bengü; Yetiş, Ülkü (2017-12-15)
Removal of triclosan from surface water by ozonation was investigated. The results showed that complete elimination of triclosan from a surface water bearing 1-5 mg/L triclosan via continuous ozonation at 5 mg/L, require an ozonation time of 20-30 min depending on pH. Triclosan oxidation followed pseudo-first order kinetics with an apparent reaction rate constant varying from 0.214 min(-1) to 0.964 min(-1) depending on pH, initial triclosan concentration and water composition. Although the effect of pH was ...
Chance constrained optimization of booster disinfection in water distribution networks
Köker, Ezgi; Altan Sakarya, Ayşe Burcu; Department of Civil Engineering (2011)
Quality of municipal water is sustained by addition of disinfectant, generally chlorine, to the water distribution network. Because of health problems, chlorine concentration in the network is limited between maximum and minimum limits. Cancerogenic disinfectant by-products start to occur at high concentrations so it is desired to have minimum amount of chlorine without violating the limit. In addition to the health issues, minimum injection amount is favorable concerning cost. Hence, an optimization model ...
Triclosan removal by nanofiltration from surface water
Öğütverici, Abdullah; Yetiş, Ülkü; Dilek, Filiz Bengü; Department of Environmental Engineering (2013)
Nowadays, organic pollutants occurring in surface waters have raised substantial concern in public. Triclosan (TCS) is one of the antimicrobial agents which are utilized in both domestic and industrial application. In this study nanofiltration (NF) of TCS in surface water was investigated. Laboratory scale cross-flow device is operated in total recycle mode and DK-NF and DL-NF membranes were used. Kesikköprü Reservoir (Ankara) water was used as raw water. Effect of natural organic matter (NOM) content of ra...
A Multi-Scale Approach for Improved Characterization of Surface Water-Groundwater Interactions: Integrating Thermal Remote Sensing and in-Stream Measurements
VARLI, Dilge; Yılmaz, Koray Kamil (2018-07-01)
The interaction between surface water and groundwater is recognized as a key process for effective management of water resources. However, scale dependency and spatial heterogeneity of the processes at the interface are limiting factors in the characterization of this process. A hierarchical, multi scale methodology has been devised and demonstrated to effectively and efficiently characterize the surface water-groundwater interaction along a 2-km reach in Kirmir stream, Turkey. Our methodology starts with i...
YURTERI, C; GUROL, MD (1990-06-01)
This paper is focused on the use of ozone for the elimination of manmade organic micropollutants from drinking waters and waste effluents requiring advanced treatment. A mathematical model was developed to simulate the physical transport and chemical oxidation phenomena prevailing during the process of ozonation. A packed column reactor was constructed in order to test the aptness of the process model. After determining the fluid-dynamic and mass transfer properties of the reactor, stock water solutions spi...
Citation Formats
A. OGUTVERİCİ, L. Yılmaz, Ü. Yetiş, and F. B. Dilek, “Triclosan removal by NF from a real drinking water source - Effect of natural organic matter,” CHEMICAL ENGINEERING JOURNAL, pp. 330–337, 2016, Accessed: 00, 2020. [Online]. Available: