Polyethylenimine-crosslinked chitin flake as a biosorbent for removal of Acid Blue 25

Kim, Gyeong Min; Wang, Zhuo; Kang, Su Bin; Won, Sangchul

doi:10.1007/s11814-019-0347-2

Cited by 21 publications

(8 citation statements)

References 37 publications

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“…Mamah et al (2020) fabricated a palygorskite-chitin hybrid nanomaterial by a ball milling method, and its adsorption capacity for Pb(II) was increased from 6.3 to 53.7 mg/g [27]. In addition to the above achievements, our research team also successfully improved the adsorption capacity of chitin for Acid Blue 25 and Reactive Black 5 by crosslinking polyethylenimine (PEI) on the chitin surface [28,29]. Considering that there is insufficient research on the recovery of PGMs using chitin-based biosorbents, it is of great significance to investigate the adsorption performance of the PEI-crosslinked chitin (PEI-chitin) biosorbent for PGMs.…”

Section: Introductionmentioning

confidence: 73%

Recovery of Pd(II) from Aqueous Solution by Polyethylenimine-Crosslinked Chitin Biosorbent

Wang¹,

Kang²,

Won³

2021

Preprint

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This study reports the recovery of Pd(II) from acid solution by a polyethylenimine (PEI) crosslinked chitin (PEI-chitin) biosorbent. FE-SEM analysis demonstrated that there are many slot-like pores on PEI-chitin. N2 adsorption-desorption experiment revealed that the average pore size was 47.12 nm. Elemental analysis verified the successful crosslinking of PEI with raw chitin. The Langmuir model better explained the isotherm experimental data and the theoretical maximum Pd(II) uptake was 59.6 mg/g. The adsorption kinetic data was better described by pseudo-second-order model and the adsorption equilibrium was achieved within 30 min for all initial Pd(II) concentrations of 50-200 mg/L. In the fixed-bed column, the adsorption of Pd(II) on PEI-chitin showed slow breakthrough and fast saturation performance. The desorption experiments achieved a concentration factor of 8.4 ± 0.4. In addition, adsorption-desorption cycles in the fixed-bed column were performed up to 3 times, consequently confirming the good reusability of PEI-chitin for Pd(II) recovery. Therefore, the PEI-chitin can be used as a promising biosorbent for the recovery of Pd(II) in practical applications.

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Section: Introductionmentioning

confidence: 73%

Recovery of Pd(II) from Aqueous Solution by Polyethylenimine-Crosslinked Chitin Biosorbent

Wang¹,

Kang²,

Won³

2021

Preprint

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“…The activation and regeneration of adsorbents are also important. In this paper, in order to explore the reusability of the adsorbent, 10% HCl solution was used to separate the MO from the adsorbent, FTIR and XRD characterization of the adsorbent after activation and regeneration were performed.…”

Section: Resultsmentioning

confidence: 99%

Novel Adsorbent of N-Phenylthiourea-Functionalized Graphene Oxide and Its Removal of Methyl Orange in Aqueous Solutions

Lü

Zhang

et al. 2020

J. Chem. Eng. Data

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In this paper, an N-phenylthiourea-functionalized graphene oxide (GO-NPT) composite was prepared by a condensation reaction of graphene oxide (GO) and N-phenylthiourea. This composite was characterized by scanning electron microscopy, X-ray photoelectron spectroscopy, Fourier transform infrared spectroscopy, Raman spectroscopy, X-ray diffraction, ultraviolet−visible spectroscopy, thermogravimetric analysis, the Brunauer−Emmett−Teller method, and zeta potential measurements. By exploring the effects of pH, time, temperature, salt ion solubility, and initial methyl orange (MO) concentration on adsorption, we have found the optimal conditions for adsorption. In addition, the adsorption mechanism was explored by adsorption kinetics, adsorption isotherms, and adsorption thermodynamics. After the tests, we found that GO-NPT has excellent reusability. Compared to the parent material GO (adsorption capacity of 63.84 mg/g), the adsorption capacity of GO-NPT for MO was 141.467 mg/g. Therefore, we believe that GO-NPT is a very promising adsorbent.

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“…(2020) fabricated a palygorskite-chitin hybrid nanomaterial by a ball milling method, and its adsorption capacity for Pb(II) was increased from 6.3 to 53.7 mg/g [27]. In addition to the above achievements, our research team also successfully improved the adsorption capacity of chitin for Acid Blue 25 and Reactive Black 5 by crosslinking polyethylenimine (PEI) on the chitin surface [28,29]. Considering that there is insufficient research on the recovery of PGMs using chitin-based biosorbents, it is of great significance to investigate the adsorption performance of the PEI-crosslinked chitin (PEI-chitin) biosorbent for PGMs.…”

Section: Introductionmentioning

confidence: 95%

“…The PEI-chitin was prepared using our previous method with slight modification [28]. Briefly, 3 g of chitin powder was mixed with 100 mL of 3% GA solution and stirred in an incubator under 25 • C and 160 rpm.…”

Section: Preparation Of Pei-chitinmentioning

confidence: 99%

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Recovery of Pd(II) from Aqueous Solution by Polyethylenimine-Crosslinked Chitin Biosorbent

2021

Self Cite

View full text Add to dashboard Cite

This study reports the recovery of Pd(II) from acid solution by a polyethylenimine (PEI)-crosslinked chitin (PEI-chitin) biosorbent. FE-SEM analysis demonstrated that there are many slot-like pores on PEI-chitin. The N2 adsorption–desorption experiment revealed that the average pore size was 47.12 nm. Elemental analysis verified the successful crosslinking of PEI with raw chitin. The Langmuir model better explained the isotherm experimental data and the theoretical maximum Pd(II) uptake was 57.1 mg/g. The adsorption kinetic data were better described by the pseudo-second-order model and the adsorption equilibrium was achieved within 30 min for all initial Pd(II) concentrations of 50–200 mg/L. In the fixed-bed column, the adsorption of Pd(II) on PEI-chitin showed a slow breakthrough and a fast saturation performance. The desorption experiments achieved a concentration factor of 8.4 ± 0.4; in addition, the adsorption–desorption cycles in the fixed-bed column were performed up to three times, consequently confirming the good reusability of PEI-chitin for Pd(II) recovery. Therefore, the PEI-chitin can be used as a promising biosorbent for the recovery of Pd(II) in practical applications.

show abstract

Polyethylenimine-crosslinked chitin flake as a biosorbent for removal of Acid Blue 25

Cited by 21 publications

References 37 publications

Recovery of Pd(II) from Aqueous Solution by Polyethylenimine-Crosslinked Chitin Biosorbent

Recovery of Pd(II) from Aqueous Solution by Polyethylenimine-Crosslinked Chitin Biosorbent

Novel Adsorbent of N-Phenylthiourea-Functionalized Graphene Oxide and Its Removal of Methyl Orange in Aqueous Solutions

Recovery of Pd(II) from Aqueous Solution by Polyethylenimine-Crosslinked Chitin Biosorbent

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