Pb (II) Remediation from Aqueous Environment Using Chitosan-Activated Carbon-Polyvinyl Alcohol Composite Beads

Akter, Mahmuda; Hirase, Noriko; Sikder, Md. Tajuddin; Hosokawa, Toshiyoki; Saito, Takeshi; Kurasaki, Masaaki

doi:10.1007/s11270-021-05243-8

Cited by 12 publications

(7 citation statements)

References 29 publications

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“…The PVA-CS/CE hydrogel beads were fabricated via the physical crosslinking method, as described in a previous study [ 20 ]. PVA (4 g) was dissolved in deionized water (50 mL), and CS (2 g) was dissolved in CH 3 COOH solution (2% v/v , 100 mL).…”

Section: Methodsmentioning

confidence: 99%

“…Amongst all the treatments proposed, adsorption using sorbents is one of the most popular methods since the proper design of the adsorption process will produce high-quality treated effluents. Adsorption is now recognized as an effective, efficient, and economic method for water remediation applications [ 20 , 21 ]. Furthermore, adsorption is a reversible process so that adsorbents can be sustained and reused through desorption [ 22 ].…”

Section: Introductionmentioning

confidence: 99%

“…They have created crosslinked three-dimensional network topologies, for instance, with excellent water sorption and retention capacities. Accordingly, they can capture and store different heavy metal ions found in water within their crosslinked network structure [ 20 , 23 , 24 ]. In addition, the functional groups in their network structures, such as carboxyl (−COOH), hydroxyl (−OH), and amine (−NH 2 ), can afford the essential coordinating sites for the heavy metal ions.…”

Section: Introductionmentioning

confidence: 99%

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Synthesis and Characterization of Biodegradable Poly(vinyl alcohol)-Chitosan/Cellulose Hydrogel Beads for Efficient Removal of Pb(II), Cd(II), Zn(II), and Co(II) from Water

Aljar

Rashdan

Almutawah

et al. 2023

Gels

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Globally, water contamination by heavy metals is a serious problem that affects the environment and human health. Adsorption is the most efficient way of water treatment for eliminating heavy metals. Various hydrogels have been prepared and used as adsorbents to remove heavy metals. By taking advantage of poly(vinyl alcohol) (PVA), chitosan (CS), cellulose (CE), and the process for physical crosslinking, we propose a simple method to prepare a PVA-CS/CE composite hydrogel adsorbent for the removal of Pb(II), Cd(II), Zn(II) and Co(II) from water. Structural analyses of the adsorbent were examined by Fourier transform infrared (FTIR) spectroscopy, scanning electron microscopy-energy dispersive X-ray (SEM-EDX) analysis, and X-ray diffraction (XRD). PVA-CS/CE hydrogel beads had a good spherical shape together with a robust structure and suitable functional groups for the adsorption of heavy metals. The effects of adsorption parameters such as pH, contact time, adsorbent dose, initial concentration of metal ions, and temperature on the adsorption capacity of PVA-CS/CE adsorbent were studied. The adsorption characteristics of PVA-CS/CE for heavy metals may be completely explained by pseudo-second-order adsorption and the Langmuir adsorption model. The removal efficiency of PVA-CS/CE adsorbent for Pb(II), Cd(II), Zn(II), and Co(II) was 99, 95, 92, and 84%, respectively, within 60 min. The heavy metal’s hydrated ionic radius may be crucial in determining the adsorption preference. After five consecutive adsorption–desorption cycles, the removal efficiency remained over 80%. As a result, the outstanding adsorption-desorption properties of PVA-CS/CE can potentially be extended to industrial wastewater for heavy metal ion removal.

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Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Synthesis and Characterization of Biodegradable Poly(vinyl alcohol)-Chitosan/Cellulose Hydrogel Beads for Efficient Removal of Pb(II), Cd(II), Zn(II), and Co(II) from Water

Aljar

Rashdan

Almutawah

et al. 2023

Gels

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“…27 In addition, Akter's group prepared a composite CS-AC-PVA bead proven as a nominee adsorbent for environmental decontamination of Pb(II) from the aqueous systems. 28 Also, PVA/CS/PDA-GO beads fabricated by Le's group exhibit a high adsorption capacity toward heavy metals. 29 Up to now, manifold CS/PVA bead derivatives by grafting a variety of natural and synthetic molecules have been reported.…”

Section: Introductionmentioning

confidence: 99%

“…He’s group obtained the PVA-CS-EDTA hydrogel beads, which would be a prospective adsorbent for metal ion removal from wastewater . In addition, Akter’s group prepared a composite CS-AC-PVA bead proven as a nominee adsorbent for environmental decontamination of Pb(II) from the aqueous systems . Also, PVA/CS/PDA-GO beads fabricated by Le’s group exhibit a high adsorption capacity toward heavy metals .…”

Section: Introductionmentioning

confidence: 99%

Metformin-Embedded Biocompatible Chitosan/Poly(vinyl alcohol) Beads with Superior Adsorption Properties toward Lead(II) and Levofloxacin

Ramsheh

Dogari

Mosaffa

et al. 2023

ACS Appl. Polym. Mater.

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In this contemporary era, chitosan has gained exceptional attention as a sustainable biopolymer in the adsorption process due to its nontoxic nature, biocompatibility, accessibility, and pH-responsive active surface charge. This study developed a high-performance chitosan/poly(vinyl alcohol) adsorbent through metformin functionalization. The incorporation of poly(vinyl alcohol) (PVA), along with the metformin-activated surface, remarkably ameliorated its physiochemical properties. The abundance of inter-and intrahydrogen and chemical bonds in the porous structure enhances the specific surface area up to 83.8 m 2 /g. Series characterization methods are utilized to investigate the adsorbents' characteristics in all aspects and the removal performance. Furthermore, the key factors for the adsorption process, including the influence of pH, adsorbent quantity, time intervals, and preliminary concentration, were studied and optimized. The optimal pH was observed in the neutral moiety, which is crucial from an industrial perspective. Due to the presence of countless nitrogen and oxygen atom-containing backbones, the CS/ PVA-Pr-Met biocomposite has demonstrated considerable adsorption capacity toward Pb(II) ions and levofloxacin with the highest adsorption capacities of 313.162 mg/g for Pb(II) and 2872.927 mg/g for levofloxacin concerning their molecular and ionic nature and various adsorption mechanisms. In accordance with the correlation coefficient and estimated parameters, the adsorption of Pb(II) and levofloxacin onto the beads mostly follows the pseudo-second-order kinetics (R 2 ≥ 0.997) and the Langmuir adsorption isotherm model (R 2 ≥ 0.995). The exceptional adsorption capacity coupled with the porous structure of the modified hydrogel beads has promising applications for efficient wastewater treatment

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Hexavalent Chromium Sorption by Modified Cellulose Macro and Nanofibers Obtained from Eucalyptus Residues

et al. 2022

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Pb (II) Remediation from Aqueous Environment Using Chitosan-Activated Carbon-Polyvinyl Alcohol Composite Beads

Cited by 12 publications

References 29 publications

Synthesis and Characterization of Biodegradable Poly(vinyl alcohol)-Chitosan/Cellulose Hydrogel Beads for Efficient Removal of Pb(II), Cd(II), Zn(II), and Co(II) from Water

Synthesis and Characterization of Biodegradable Poly(vinyl alcohol)-Chitosan/Cellulose Hydrogel Beads for Efficient Removal of Pb(II), Cd(II), Zn(II), and Co(II) from Water

Metformin-Embedded Biocompatible Chitosan/Poly(vinyl alcohol) Beads with Superior Adsorption Properties toward Lead(II) and Levofloxacin

Hexavalent Chromium Sorption by Modified Cellulose Macro and Nanofibers Obtained from Eucalyptus Residues

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