Removal of ethinylestradiol (EE2) from water via adsorption on aliphatic polyamides

Han, Jun; Qiu, Wei; Meng, Suwan; Gao, Wei

doi:10.1016/j.watres.2012.08.001

Cited by 52 publications

(20 citation statements)

References 35 publications

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“…These changes may be also result from the overlap with other bands, such as hydroxyl groups of estradiol at 3200 cm À1 and 3400 cm À1 , the aromatic C]C stretching at near 1620 cm À1 and the C]O stretching band at 1635 cm À1 from the adsorbed EE2. 52,53 There were some new weak characteristic peaks of EE2 emerged in the spectra aer reaction which further proved the sorption of EE2 on FMBO, including the aliphatic C-H at 2944 cm À1 , the C]C stretching appeared at 1570 cm À1 , the aromatic C-H at 1386 cm À1 , the C-O vibration from phenolic hydroxyl and alcoholic hydroxyl at 1260 cm À1 and the bending vibration of C-H at 820 cm À1 . [54][55][56] FMBO showed three typical characteristic infrared peaks at 1127, 1047, and 979 cm À1 before reaction.…”

Section: Analysis Of Reaction Mechanismmentioning

confidence: 71%

Efficient removal of 17α-ethinylestradiol (EE2) from water using freshly formed Fe–Mn binary oxide

Jiang

Guo

et al. 2017

RSC Adv.

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Section: Analysis Of Reaction Mechanismmentioning

confidence: 71%

Efficient removal of 17α-ethinylestradiol (EE2) from water using freshly formed Fe–Mn binary oxide

Jiang

Guo

et al. 2017

RSC Adv.

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“…In addition, the adsorption of estrogens did not depend on porosity and specic surface area to achieve a high adsorption capacity of most carbon adsorbents. 57 …”

mentioning

confidence: 99%

Hydrothermal synthesis of montmorillonite/hydrochar nanocomposites and application for 17β-estradiol and 17α-ethynylestradiol removal

Tian

Liu

et al. 2018

RSC Adv.

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abWith a view to reducing estrogens pollution in aqueous environments, montmorillonite/hydrochar (MMT/ HC) with or without modification by KOH via hydrothermal carbonization process (HTC) were applied to remove 17b-estradiol (E2) and 17a-ethynylestradiol (EE2). The characterizations of MMT/HC indicated that MMT had been successfully attached onto HC surface, which could cause an improvement in the stability of the clay nanoparticles. MMT/HC with 1% KOH (MMT/HC-K1) exhibited excellent adsorption) compared to those of other adsorbents; approximately 2-fold higher than that of HC. Moreover, the adsorption capacity maintained a high level over a wide pH range (2-8). The pseudo-second-order model and Freundlich model exhibited prior fitting performance for adsorption of E2 and EE2. The regenerated MMT/HC-K1 retained over 80% of its initial capacity after four cycles. The adsorption mechanism on MMT/HC-K1 could be explained by hydrophobicity, p-p bond, electrostatic interaction and H-bonding interaction. Overall, MMT/HC-K1 synthesis from two low-cost materials, could be considered as a competitive adsorbent for estrogens removal from aqueous environment, considering its high adsorption capacity and regeneration ability.

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“…The material of MFX adsorbent is glycoprotein which has hydrophobicity and displays a wide range of sorption behavior for hydrophobic organic compounds in aqueous solutions [22]. The adsorption isotherms of sulfamethoxazole on MFX adsorbents are presented in Figure 3 and Table 5.…”

Section: Resultsmentioning

confidence: 99%

Removal Efficiency and Mechanism of Sulfamethoxazole in Aqueous Solution by Bioflocculant MFX

Xing

Yang

et al. 2013

Journal of Analytical Methods in Chemistry

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Although the treatment technology of sulfamethoxazole has been investigated widely, there are various issues such as the high cost, inefficiency, and secondary pollution which restricted its application. Bioflocculant, as a novel method, is proposed to improve the removal efficiency of PPCPs, which has an advantage over other methods. Bioflocculant MFX, composed by high polymer polysaccharide and protein, is the metabolism product generated and secreted by Klebsiella sp. In this paper, MFX is added to 1 mg/L sulfanilamide aqueous solution substrate, and the removal ratio is evaluated. According to literatures review, for MFX absorption of sulfanilamide, flocculant dosage, coagulant-aid dosage, pH, reaction time, and temperature are considered as influence parameters. The result shows that the optimum condition is 5 mg/L bioflocculant MFX, 0.5 mg/L coagulant aid, initial pH 5, and 1 h reaction time, and the removal efficiency could reach 67.82%. In this condition, MFX could remove 53.27% sulfamethoxazole in domestic wastewater, and the process obeys Freundlich equation. R 2 value equals 0.9641. It is inferred that hydrophobic partitioning is an important factor in determining the adsorption capacity of MFX for sulfamethoxazole solutes in water; meanwhile, some chemical reaction probably occurs.

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Removal of ethinylestradiol (EE2) from water via adsorption on aliphatic polyamides

Cited by 52 publications

References 35 publications

Efficient removal of 17α-ethinylestradiol (EE2) from water using freshly formed Fe–Mn binary oxide

Efficient removal of 17α-ethinylestradiol (EE2) from water using freshly formed Fe–Mn binary oxide

Hydrothermal synthesis of montmorillonite/hydrochar nanocomposites and application for 17β-estradiol and 17α-ethynylestradiol removal

Removal Efficiency and Mechanism of Sulfamethoxazole in Aqueous Solution by Bioflocculant MFX

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