Enhanced removal of bisphenol-AF onto chitosan-modified zeolite by sodium cholate in aqueous solutions

Peng, Sha; Hao, Kunyan; Han, Feng; Tang, Zheng; Niu, Beibei; Zhang, Xu; Wang, Zhen; Hong, Su Young

doi:10.1016/j.carbpol.2015.05.019

Cited by 33 publications

(12 citation statements)

References 35 publications

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“…The BPs adsorption efficiency of the resulting composite can be comparable with those of other reported chitosan-based materials [ 30 , 31 ]. Moreover, the similar adsorption efficiency of BPA could be attained more quickly on the resulting composite than commercial chitosan [ 30 ]. Considering the hydrophobic interaction between Fe 3 O 4 @CTS+SiO 2 -C 12 composite and BPs, methanol was chosen as the eluent.…”

Section: Resultssupporting

confidence: 76%

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Preparation and Enrichment Properties of Magnetic Dodecyl Chitosan/Silica Composite for Emerging Bisphenol Contaminants

Liu

et al. 2018

Materials

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Magnetic dodecyl chitosan/silica composite was synthesized and characterized for the enrichment of emerging bisphenol contaminants. The result demonstrated that bispehnol A, bisphenol AF, bisphenol F, and bisphenol S can be efficiently extracted via the resulting composite from aqueous solution. The adsorption rate of four investigated bisphenols on the resulting composite was achieved in the range of 87–99% within 15 min. Bispehnol A was taken as a representative adsorbate to investigate the adsorption studies in detail. The hydrophobic interaction was proposed as the principal mechanism for the adsorption of BPs. The satisfactory reusability of the resulting composite can be quickly achieved by magnetic separation technologies. Magnetic dodecyl chitosan/silica composite has a potential to be applied as a type of efficient and easily recyclable sorbent for the removal of trace organic pollutants from aqueous sample.

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Section: Resultssupporting

confidence: 76%

“…Currently, the design and preparations of magnetic chitosan-based sorbents were still focused on the uptake of harmful metal ions or organic dyes [ 27 , 28 , 29 ]. Not many studies on chitosan-based sorbents for the removal of emerging BPs contaminants are reported [ 30 , 31 ].…”

Section: Introductionmentioning

confidence: 99%

Preparation and Enrichment Properties of Magnetic Dodecyl Chitosan/Silica Composite for Emerging Bisphenol Contaminants

Liu

et al. 2018

Materials

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“…Therefore, the PFO model was able to explain the adsorption of BPA on CF-HAP at all studied initial concentrations. Similar results have been reported by several authors (Peng et al 2015;Taghi et al 2016). Furthermore, the adsorption capacities of BPA onto CF-HAP noticeably increased as the initial concentration of BPA increased (from 20 mg/L to 40 mg/L).…”

Section: Adsorption Kinetics Of Bpasupporting

confidence: 91%

Ceramic hydroxyapatite foam as a new material for Bisphenol A removal from contaminated water

Khallok

Zbair

Ojala

et al. 2021

Environ Sci Pollut Res

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Ceramic hydroxyapatite foam (CF-HAP) was prepared by combining slip-casting and foaming methods.The prepared CF-HAP was characterized by scanning electron microscopy (SEM); physisorption of N2, Fourier transforms infrared spectroscopy (FTIR), and X-ray diffraction (XRD). The results of the specific surface area and SEM analyses revealed that the used shaping method provides CF-HAP with a wide range of porosity including macro and mesopores. Based on FTIR and XRD analyses, the CF-HAP is similar to pure well-crystallized hydroxyapatite. The adsorption results revealed that 94% of the BPA with a concentration of (40 mg/L) was effectively removed from the water and that the maximum adsorption capacity was higher in acidic than in basic medium. The thermodynamic studies indicated that the adsorption reaction was spontaneous and endothermic in nature. The adsorption capacity increased with the temperature and the BPA is chemisorbed on the ceramic foam. The isotherm data fitted slightly better with the Liu than with the Freundlich and Langmuir models suggesting that the adsorption was homogeneous and occurred only in the monolayer. The adsorption process depends largely on the BPA concentration and the results fitted well with the pseudo-first-order model. This confirms that the interaction between the BPA and the CF-HAP was mainly chemical in nature. The FTIR analysis of the used and fresh CF-HAP showed that all the hydroxyl and phosphorus bands characteristic of the hydroxyapatite shifted after adsorption of Bisphenol-A. This suggests that the adsorption of Bisphenol-A occurred in the sites of the Hydroxyapatite. Therefore, it can be concluded that the CF-HAP has the potential to be used as an adsorbent for wastewater treatment and purification processes.

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“…The pH PZC of leaves and seeds from Moringa-derived biosorbent was 6.4 and 4.8, respectively. Thus, at pH > pH PZC , the heavy metal ions are attracted by the negative surface charge of biosorbents, whereas at pH < pH PZC , the adsorption of metal ions is not favored since the charge in the biosorbent surface is positive, which caused an electrostatic repulsion with metal ions [33]. This section may be divided by subheadings.…”

Section: Point Of Zero Charge (Ph Pzc )mentioning

confidence: 99%

Comparison of Heavy Metals Removal from Aqueous Solution by Moringa oleifera Leaves and Seeds

et al. 2021

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In this work, biomass obtained from seeds (S-MO) and leaves (L-MO) of the Moringa oleifera plant were used as low-cost biosorbents to remove the Pb(II), Cd(II), Co(II), and Ni(II) from aqueous solutions. The biosorption of the heavy metal ions was done using the batch technique. The effects of contact time (30–1440 min), biosorbent dosage (10–50 g/L) (0.1–0.5 g), and initial concentration of metals (10–500 mg/L) on the sorption capacity of metal ions were investigated. The S-MO and L-MO samples’ characterization was performed using pHpzc, X-ray Diffraction (XRD), and Fourier Transform Infrared Spectroscopy (FTIR). It was found that the pHpzc was notably different between the seeds and leave-derived biosorbents. The removal process’s experimental kinetic data for both S-MO and L-MO were best described by the pseudo-second-order model for all metal ions, with R2 above 0.997 in all cases. Langmuir and Freundlich’s models were also used to analyze the isotherms parameters. Based on the Langmuir model, the maximum sorption capacities (Qm) for L-MO were found as follows: L-MO-Pb > L-MO-Cd > L-MO-Co ≥ L-MO-Ni, and for S-MO, the values of Qm values presented the following order: S-MO-Pb > S-MO-Co > S-MO-Cd > S-MO-Ni.

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Enhanced removal of bisphenol-AF onto chitosan-modified zeolite by sodium cholate in aqueous solutions

Cited by 33 publications

References 35 publications

Preparation and Enrichment Properties of Magnetic Dodecyl Chitosan/Silica Composite for Emerging Bisphenol Contaminants

Preparation and Enrichment Properties of Magnetic Dodecyl Chitosan/Silica Composite for Emerging Bisphenol Contaminants

Ceramic hydroxyapatite foam as a new material for Bisphenol A removal from contaminated water

Comparison of Heavy Metals Removal from Aqueous Solution by Moringa oleifera Leaves and Seeds

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