Polyamide-6 for the removal and recovery of the estrogenic endocrine disruptors estrone, 17β-estradiol, 17α-ethinylestradiol and the oxidation product 2-hydroxyestradiol in water

Tizaoui, Chedly; Fredj, S. Ben; Monser, Lotfi

doi:10.1016/j.cej.2017.07.045

Cited by 31 publications

(11 citation statements)

References 42 publications

(49 reference statements)

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“…Earlier study showed that sorption of PFOS on PE, PS, and PVC decreased with increasing pH (Wang et al, 2015). Tizaoui et al (2017) also reported that increasing pH of reaction system can reduce endocrine disrupting chemicals (EDCs) adsorption on PA significantly. On the other hand, ionic strength, to a certain extent, could affect the electrostatic interactions since the electrolytes can compete with adsorbate for electrostatic sites (Shen and Gondal, 2017).…”

Section: Freshwater and Seawater Systemsmentioning

confidence: 98%

Adsorption of antibiotics on microplastics

Zhang

2018

Environmental Pollution

976

305

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Microplastics and antibiotics are two classes of emerging contaminants with proposed negative impacts to aqueous ecosystems. Adsorption of antibiotics on microplastics may result in their long-range transport and may cause compound combination effects. In this study, we investigated the adsorption of 5 antibiotics [sulfadiazine (SDZ), amoxicillin (AMX), tetracycline (TC), ciprofloxacin (CIP), and trimethoprim (TMP)] on 5 types of microplastics [polyethylene (PE), polystyrene (PS), polypropylene (PP), polyamide (PA), and polyvinyl chloride (PVC)] in the freshwater and seawater systems. Scanning Electron Microscope (SEM) and X-ray diffractometer (XRD) analysis revealed that microplastics have different surface characterizes and various degrees of crystalline. Adsorption isotherms demonstrated that PA had the strongest adsorption capacity for antibiotics with distribution coefficient (K) values ranged from 7.36 ± 0.257 to 756 ± 48.0 L kg in the freshwater system, which can be attributed to its porous structure and hydrogen bonding. Relatively low adsorption capacity was observed on other four microplastics. The adsorption amounts of 5 antibiotics on PS, PE, PP, and PVC decreased in the order of CIP > AMX > TMP > SDZ > TC with K correlated positively with octanol-water partition coefficients (Log K). Comparing to freshwater system, adsorption capacity in seawater decreased significantly and no adsorption was observed for CIP and AMX. Our results indicated that commonly observed polyamide particles can serve as a carrier of antibiotics in the aquatic environment.

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Section: Freshwater and Seawater Systemsmentioning

confidence: 98%

Adsorption of antibiotics on microplastics

Zhang

2018

Environmental Pollution

976

305

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“…This research examined the role of polyamide-6 for the removal and recovery of the estrogenic endocrine disruptors estrone, 17β-estradiol, 17α-ethinylestradiol and the oxidation product 2hydroxyestradiol in water. Tizaoui et al (2017) [66] described the removal of endocrine disrupting compounds such as estrone (E1), 17β-estradiol (E2) and 17α-ethinylestradiol (EE2) and the oxidation product 2-hydroxyestradiol (2OHE2) from secondary treated wastewater in Wales (United Kingdom) using polyamide 6 as a sorbent material in their study. Results explored that PA6 is an effective sorbent material for the removal and recovery of EDCs from different water environments.…”

Section: Research Article-1mentioning

confidence: 99%

Endocrine Disrupting Compounds Removal Methods from Wastewater in the United Kingdom: A Review

Gadupudi¹,

Rice²,

Xiao³

et al. 2019

Sci

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Endocrine disrupting compounds (EDCs) are contaminants with estrogenic or androgenic activity that negatively impact human and animal communities. These compounds have become one of the significant concerns for wastewater treatment in recent decades. Several studies have evaluated EDC removal methods from wastewater across the globe including the United Kingdom (UK). Accordingly, the current study reviews EDC removal methods from municipal/domestic wastewater in the United Kingdom (UK) for the period of 2010–2017. The research highlights that despite the relative efficacy of existing chemical and physical methods for removing certain EDCs from wastewater there is emerging evidence supporting the need for more widespread application of nature-based and biological approaches, particularly the use of biofilms. The analysis reveals that there have been relatively few research studies on EDC removal methods have been carried out in the UK in the 2010–2017 period and none of the research focused on EDC removal using biofilms. Finally, this review suggests that more research is needed to remove EDCs, particularly through the application of biofilms, from municipal wastewater in current scenarios.

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“…Given that the Fenton reaction is accelerated by light, the photo-Fenton reaction provides faster rates and potential for higher amounts of pollutant mineralisation [19]. This irradiation with UV light of the Fe 3+ ions (produced by the Fenton reaction, as shown in equation [1] in the presence of H2O2 forms Fe 2+ ions with a hydroxyl radical as shown in equation [2] [20, 21,22 ]. A continuous cycle between the Fe 2+ and Fe 3+ species is generated.…”

Section: Figure 1: Molecular Structures Of Estrogensmentioning

confidence: 99%

“…[1] Fenton Reaction [2] Photo-reduction of Fe 3+ ions [3] Oxidation of organic species RH The organic ion exchange resin, Nafion, has been tested as an immobilisation technique or carrier for the iron and is also known to catalyse a wide range of reactions [23,24]. Nafion is chemically inert and a realistic option for use in WWTPs, unlike strong homogeneous acid [24,25].…”

Section: Figure 1: Molecular Structures Of Estrogensmentioning

confidence: 99%

“…Endocrine Disrupting Chemicals (EDCs) are environmental contaminants that interfere with endocrine system function [1]. Estrogens are a group of steroid chemicals functioning as the primary female sex hormone and are defined by their effects within the estrous cycle [2,3]. By imitating the hormonal system and altering the endocrine system function, estrogens act as EDCs and induce an adverse effect on the natural environment [4].…”

Section: Introductionmentioning

confidence: 99%

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Nanostructured catalysts for photo-oxidation of endocrine disrupting chemicals

Baycan

Puma

2018

Journal of Photochemistry and Photobiology A: Chemistry

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Removal of four Endocrine disrupting chemicals (EDCs) Estrone (E1), 17-β-estradiol (E2), Estriol (E3) and 17-α-ethynylestradiol (EE2) were investigated using UV oxidation and combined with Nafion/iron catalyst. Immobilization of iron on the perfluorosulfonic polymer, Nafion®, has been investigated as a carrier for the oxidation of pollutants by hydroxyl radicals (heterogenous photo-Fenton mechanism). However, the low surface area of Nafion, less than 0.2 m 2 /g, usually results in low pollutant degradation rates. Sol-gel technology was used to produce a high surface area poly(dimethylsiloxane) (PDMS) modified Nafion/silica composite suitable for catalysis of the photo-Fenton reaction without significant leaching of iron. The incorporation of Nafion into silica greatly increases the accessibility of Nafion/iron loaded active site. PDMS reinforces the structure of silica and maintains the transparency of the composite, which is essential for efficient Photo-Fenton reactions. These composites were utilized for the decomposition of estrogens which are Estrone (E1), 17-β-estradiol (E2), Estriol (E3) and 17-α-ethynylestradiol (EE2). In consequence, it is clear that the composite effectively catalyses the photo-Fenton reaction to remove estrone. The presence of iron through the use of the catalyst leads to rapid degradation of the estrone compared to just H2O2 and UV light alone. It was found that the addition of only 8.5 mg/L H2O2 produced more than %90 conversion of estrogens within 60 minutes.

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Polyamide-6 for the removal and recovery of the estrogenic endocrine disruptors estrone, 17β-estradiol, 17α-ethinylestradiol and the oxidation product 2-hydroxyestradiol in water

Cited by 31 publications

References 42 publications

Adsorption of antibiotics on microplastics

Adsorption of antibiotics on microplastics

Endocrine Disrupting Compounds Removal Methods from Wastewater in the United Kingdom: A Review

Nanostructured catalysts for photo-oxidation of endocrine disrupting chemicals

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