Simultaneous Adsorption of Multi-lanthanides from Aqueous Silica Sand Solution Using Pectin–Activated Carbon Composite

Kusrini, Eny; Alhamid, Muhammad Idrus; Widiantoro, Andikaputra Brahma; Daud, Nur Zafirah A.; Usman, Anwar

doi:10.1007/s13369-020-04386-w

Cited by 19 publications

(6 citation statements)

References 74 publications

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“…Heavy-metal ions are assumed to be coordinated to the functional groups of CHN and HAP via favourable coordination and electrostatic interactions. This adsorption behaviour is similar to that of lanthanide using a pectin-activated carbon (Pec-AC) composite (Kusrini et al, 2020c). The ratio of synthetic HAP and CHN did not markedly affect the kinetic results, but the component ratio affected the adsorption efficiency for the heavy-metal ions.…”

Section: Adsorption Kinetic Studiessupporting

confidence: 64%

“…Figures 5a and 5b show the linear regression results of the PFO (R 2 = 0.90, 0.84, 0.97 and 1.00) and PSO (R 2 = 1.00, 0.99, 0.99) kinetic models for Cr 6+ , Zn 2+ and Cd 2+ , respectively. The linear regression results for the kinetics and diffusion models revealed that the adsorption of all heavy-metal ions on the HAP/CHN composite is well described by the PSO model, which indicated is the role of chemisorption (Kusrini et al, 2020c). Heavy-metal ions are assumed to be coordinated to the functional groups of CHN and HAP via favourable coordination and electrostatic interactions.…”

Section: Adsorption Kinetic Studiesmentioning

confidence: 96%

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Micro-structured Materials for the Removal of Heavy Metals using a Natural Polymer Composite

Kusrini¹,

Ayuningtyas²,

Mawarni³

et al. 2021

IJTech

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In this study, a precipitation method was employed to prepare a synthetic hydroxyapatite (HAP)/chitosan (CHN) composite by the modification of synthetic HAP with CHN. The HAP/CHN composite was characterized by Fourier transform infrared (FTIR) spectroscopy and scanning electron microscopy equipped with energy-dispersive X-ray spectroscopy (SEM-EDX). Furthermore, the HAP/CHN composite in a 1:1 ratio (wt.%) was investigated as an adsorbent for the removal of heavy metals ions (such as Cr 6+ , Cd 2+ and Zn 2+ ) from simulated wastewater. Adsorption experiments were conducted in batch mode at room temperature. In addition, the effect of process conditions, such as contact time, was evaluated. Kinetic data were well-described by the pseudo-second-order kinetic model, where adsorption was governed by the intraparticle diffusion model. The HAP/CHN composite demonstrated potential utility as an adsorbent for the removal of heavy metals from an aqueous solution, with the highest maximum adsorption capacities of 39.3, 30.8 and 29.9 mg/g for Cr 6+ , Cd 2+ and Zn 2+ , respectively. The HAP/CHN composite materials with variable structure and composition exhibited remarkably different adsorption properties and potential applicability for industrial applications due to the material cost-effectiveness.

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Section: Adsorption Kinetic Studiessupporting

confidence: 64%

Section: Adsorption Kinetic Studiesmentioning

confidence: 96%

Micro-structured Materials for the Removal of Heavy Metals using a Natural Polymer Composite

Kusrini¹,

Ayuningtyas²,

Mawarni³

et al. 2021

IJTech

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“…[ 51 , 52 , 53 ]. We favor this technology, among the other mentioned methods, mainly because of the process’s simplicity, cost-effectiveness, energy requirements, and reversibility [ 54 , 55 ]. After the absorbent is used, it is possible to desorb the pollutants and regenerate the adsorbent for later reuse [ 56 ].…”

Section: Water Remediation Technologiesmentioning

confidence: 99%

A Review of Pectin-Based Material for Applications in Water Treatment

et al. 2023

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Climate change and water are inseparably connected. Extreme weather events cause water to become more scarce, polluted, and erratic than ever. Therefore, we urgently need to develop solutions to reduce water contamination. This review intends to demonstrate that pectin-based materials are an excellent route to detect and mitigate pollutants from water, with several benefits. Pectin is a biodegradable polymer, extractable from vegetables, and contains several hydroxyl and carboxyl groups that can easily interact with the contaminant ions. In addition, pectin-based materials can be prepared in different forms (films, hydrogels, or beads) and cross-linked with several agents to change their molecular structure. Consequently, the pectin-based adsorbents can be tuned to remove diverse pollutants. Here, we will summarize the existing water remediation technologies highlighting adsorption as the ideal method. Then, the focus will be on the chemical structure of pectin and, from a historical perspective, on its structure after applying different cross-linking methods. Finally, we will review the application of pectin as an adsorbent of water pollutants considering the pectin of low degree methoxylation.

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“…The leaching steps may include acidic [ 13 ], alkaline [ 14 ], or bioleaching solutions [ 6 , 15 ]. Simple precipitation techniques are poorly selective for the treatment of leachates [ 16 , 17 ], and it is generally necessary to couple selective precipitation steps [ 13 , 18 , 19 ] with complementary separation processes, such as solvent extraction [ 20 , 21 , 22 ] or sorption processes [ 23 , 24 ]. Sorption processes are usually preferred to solvent extraction for the treatment of low-concentration effluents.…”

Section: Introductionmentioning

confidence: 99%

“…Sorption processes are usually preferred to solvent extraction for the treatment of low-concentration effluents. A wide range of materials have been reported for cerium or REE sorption, including biosorbents [ 25 , 26 , 27 , 28 , 29 , 30 ], carbon-based supports [ 24 , 31 , 32 ], inorganic sorbents [ 33 , 34 ], and chelating and ionic-exchange resins [ 35 , 36 , 37 , 38 , 39 , 40 , 41 ].…”

Section: Introductionmentioning

confidence: 99%

Enhancement of Cerium Sorption onto Urea-Functionalized Magnetite Chitosan Microparticles by Sorbent Sulfonation—Application to Ore Leachate

Hamza

Guibal²,

Abdel‐Rahman

et al. 2022

Molecules

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The recovery of strategic metals such as rare earth elements (REEs) requires the development of new sorbents with high sorption capacities and selectivity. The bi-functionality of sorbents showed a remarkable capacity for the enhancement of binding properties. This work compares the sorption properties of magnetic chitosan (MC, prepared by dispersion of hydrothermally precipitated magnetite microparticles (synthesized through Fe(II)/Fe(III) precursors) into chitosan solution and crosslinking with glutaraldehyde) with those of the urea derivative (MC-UR) and its sulfonated derivative (MC-UR/S) for cerium (as an example of REEs). The sorbents were characterized by FTIR, TGA, elemental analysis, SEM-EDX, TEM, VSM, and titration. In a second step, the effect of pH (optimum at pH 5), the uptake kinetics (fitted by the pseudo-first-order rate equation), the sorption isotherms (modeled by the Langmuir equation) are investigated. The successive modifications of magnetic chitosan increases the maximum sorption capacity from 0.28 to 0.845 and 1.25 mmol Ce g−1 (MC, MC-UR, and MC-UR/S, respectively). The bi-functionalization strongly increases the selectivity of the sorbent for Ce(III) through multi-component equimolar solutions (especially at pH 4). The functionalization notably increases the stability at recycling (for at least 5 cycles), using 0.2 M HCl for the complete desorption of cerium from the loaded sorbent. The bi-functionalized sorbent was successfully tested for the recovery of cerium from pre-treated acidic leachates, recovered from low-grade cerium-bearing Egyptian ore.

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Simultaneous Adsorption of Multi-lanthanides from Aqueous Silica Sand Solution Using Pectin–Activated Carbon Composite

Cited by 19 publications

References 74 publications

Micro-structured Materials for the Removal of Heavy Metals using a Natural Polymer Composite

Micro-structured Materials for the Removal of Heavy Metals using a Natural Polymer Composite

A Review of Pectin-Based Material for Applications in Water Treatment

Enhancement of Cerium Sorption onto Urea-Functionalized Magnetite Chitosan Microparticles by Sorbent Sulfonation—Application to Ore Leachate

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