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

Ogutverici, Abdullah; Yılmaz, Levent; Yetış, Ülkü; Dilek, Filiz B.

doi:10.1016/j.cej.2015.07.065

Cited by 26 publications

(4 citation statements)

References 27 publications

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“…Membranes will act as physical barriers that will reject some compounds and let some other pass through, depending on the membranes pore size and molecular weight of the substances [32]. Concerning micropollutants, results are mixed [162], even if membrane processes prove to be highly efficient in the removal of some micropollutants ( [32,48,163]). The efficiency of VPRs rejection by membrane filtration depends on VPR properties (size, molecular weight, etc.…”

Section: Membrane Filtrationmentioning

confidence: 99%

Veterinary pharmaceutical residues from natural water to tap water: Sales, occurrence and fate

Charuaud

Jardé

Jaffrézic

et al. 2019

Journal of Hazardous Materials

234

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Veterinary pharmaceuticals (VPs) increasingly used in animal husbandry have led to their presence in aquatic environments -surface water (SW) or groundwater (GW) - and even in tap water. This review focuses on studies from 2007 to 2017. Sixty-eight different veterinary pharmaceutical residues (VPRs) have been quantified worldwide in natural waters at concentrations ranging from nanograms per liter (ng L) to several micrograms per liter (μg L). An extensive up-to-date on sales and tonnages of VPs worldwide has been performed. Tetracyclines (TCs) antibiotics are the most sold veterinary pharmaceuticals worldwide. An overview of VPRs degradation pathways in natural waters is provided. VPRs can be degraded or transformed by biodegradation, hydrolysis or photolysis. Photo-degradation appears to be the major degradation pathway in SW. This review then reports occurrences of VPRs found in tap water, and presents data on VPRs removal in drinking water treatment plants (DWTPs) at each step of the process. VPRs have been quantified in tap water at ng L concentration levels in four studies of the eleven studies dealing with VPRs occurrence in tap water. Overall removals of VPRs in DWTPs generally exceed 90% and advanced treatment processes (oxidation processes, adsorption on activated carbon, membrane filtration) greatly contribute to these removals. However, studies performed on full-scale DWTPs are scarce. A large majority of fate studies in DWTPs have been conducted under laboratory at environmentally irrelevant conditions (high concentration of VPRs (mg L), use of deionized water instead of natural water, high concentration of oxidant, high contact time etc.). Also, studies on VPRs occurrence and fate in tap water focus on antibiotics. There is a scientific gap on the occurrence and fate of antiparatic drugs in tap waters.

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Section: Membrane Filtrationmentioning

confidence: 99%

Veterinary pharmaceutical residues from natural water to tap water: Sales, occurrence and fate

Charuaud

Jardé

Jaffrézic

et al. 2019

Journal of Hazardous Materials

234

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“…However, the practical membrane performance relies significantly on the water matrix. Substances such as divalent cations and natural organic matter may interact with the target compounds and membranes and therefore affect the rejection behavior. − For instance, the coordination reaction between trace contaminants and divalent cations resulted in an increase in molecular size, thereby improving the sieving effect. , In addition, a decreased permeate flux of membranes due to the higher surface roughness and more precipitation on membrane surfaces after the addition of calcium has also been reported . Ca 2+ and Mg 2+ are the two most abundant divalent cations in SPWs (milligram per liter levels), which typically come from the filling water (i.e., 152 and 57 mg/L in shallow surface water and 46 and 17 mg/L in drinking water for Ca 2+ and Mg 2+ , respectively , ).…”

Section: Introductionmentioning

confidence: 99%

Magnesium-Induced Variation of Polyamide Membrane Behavior for the Treatment of Haloacetic Acids in Swimming Pool Waters

et al. 2020

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The co-presence of haloacetic acids (HAAs) and Mg 2+ in swimming pool waters and the potential interaction among Mg 2+ , HAAs, and membranes prompted a systematic investigation of membrane performance affected by Mg 2+ . The rejection behavior of the tight NF90 was not significantly affected by Mg 2+ due to the predominant role of size exclusion. For loose NF270, HAA rejection and water flux were reduced by 27% and 12%, respectively, after the addition of 5 mM Mg 2+ . The notable magnesium content in NF270 exposed in Mg 2+ indicated the binding of Mg 2+ to membranes. The interaction between Mg 2+ and membranes resulted in a less negatively charged and hydrophilic surface and a smaller effective pore radius for membranes. The reduction of the effective pore size by Mg 2+ was verified as a result of competing effects between "-COO − -induced conformational change" and "cation-induced pore shielding". The increased permeability for charged HAAs and NaCl in the presence of Mg 2+ was mainly attributed to charge neutralization, while the reduced permeability for neutral surrogates and water was due to the reduced effective pore size and hydrophilicity. The underlying mechanism for resolving the interaction among different divalent cations, trace contaminants, and polyamide membranes may have significant implications for practical water purification by membrane technologies.

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“…Nanofiltration (NF) outperformed UF as their pore sizes are less than 0.003 µm with a feed pressure of 6×102 to 103 kPa higher than the UF [43]. Recently Ogutverici et al, 2016 [47] reported that NF techniques removed the triclosan from the feed from 1.862×103 µg/kg to 1.160×103 µg/kg [48]. Further, Shen and Schäfer, 2015 [48] reported that at the feed rate of 270 mg carbon/L, NOM removal by NF was found to be eighty per cent.…”

Section: B Membrane Filtrationmentioning

confidence: 99%

A Review on techniques used for removal of Natural Organic Matter (NOM) from the water

Raj¹

2022

IJSREM

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The natural organic matter in the water continuously affects the treatment units due to their transformations. The NOM characteristics are complex, and it is challenging to clarify and remove the NOM in water. Due to the modifications of NOM during the disinfections, which results in the formation of by-products, their removal is problematic and causes adverse effects on human health. Several techniques are adopted to remove NOM from the water; one standard method involves coagulation and similar processes. The current review provides insights about the methods available for removing the natural organic matter and highlights the coagulation techniques that are gaining prominence in the current scenarios to remove the NOM from the various sources. Key Words: Coagulants, Coagulation, Natural organic matter, coagulating aids.

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

Cited by 26 publications

References 27 publications

Veterinary pharmaceutical residues from natural water to tap water: Sales, occurrence and fate

Veterinary pharmaceutical residues from natural water to tap water: Sales, occurrence and fate

Magnesium-Induced Variation of Polyamide Membrane Behavior for the Treatment of Haloacetic Acids in Swimming Pool Waters

A Review on techniques used for removal of Natural Organic Matter (NOM) from the water

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