Optimization of As(V) removal using chitosan-coated bentonite from groundwater using Box–Behnken design: effects of adsorbent mass, flow rate, and initial concentration

Arida, Carlo Vic J.; Luna, Mark Daniel G. de; Futalan, Cybelle M.; Wan, Meng-Wei

doi:10.1080/19443994.2015.1094420

Cited by 22 publications

(13 citation statements)

References 39 publications

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“…Moreover, it is applicable in household module and industrial plants and has the capacity for adsorbent regeneration [27,28]. Extensive literature review shows several materials have been utilized in arsenic and radioactive elements removal including magnetic metal-organic framework nanocomposite [29], crosslinked chitosan/MMT [30], chitosan-coated bentonite [31], clinoptilolite-rich tuff [32], activated bauxite [33], hematite [33], kaolinite [34], montmorillonite [34], granular ferric oxide [35], UltraCarb [36], nZVI-zeolite [37], F400 [38], polymer-clay nanocomposite ion exchange resin [39], and iron-titanium oxide [40]. Spent adsorbents often undergo a regeneration process or may require special handling before disposal.…”

Section: Introductionmentioning

confidence: 99%

“…Most importantly, disposal of clay materials does not have any detrimental effect on the environment [51,52]. Several reports have investigated the removal of arsenic from aqueous solution using different chitosan-clay composites including crosslinked chitosan/montmorillonite [30], chitosan/clay/magnetite composite [53], and chitosan-coated bentonite (CCB) [31,54]. Arida et al (2016) [31] reported the maximum breakthrough capacity of 10.57 μg/g for CCB in the removal of As(V) under fixed-bed conditions.…”

Section: Introductionmentioning

confidence: 99%

“…Several reports have investigated the removal of arsenic from aqueous solution using different chitosan-clay composites including crosslinked chitosan/montmorillonite [30], chitosan/clay/magnetite composite [53], and chitosan-coated bentonite (CCB) [31,54]. Arida et al (2016) [31] reported the maximum breakthrough capacity of 10.57 μg/g for CCB in the removal of As(V) under fixed-bed conditions. Batch studies have been performed by Futalan et al (2019) [54] to determine the adsorption capacity of CCB in arsenic removal from aqueous solution.…”

Section: Introductionmentioning

confidence: 99%

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Treatment of Contaminated Groundwater via Arsenate Removal Using Chitosan-Coated Bentonite

Yee

Arida²,

Futalan

et al. 2019

Molecules

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In the present research, treatment of contaminated groundwater via adsorption of As(V) with an initial concentration of 50.99 µg/L using chitosan-coated bentonite (CCB) was investigated. The effect of adsorbent mass (0.001 to 2.0 g), temperature (298 to 328 K), and contact time (1 to 180 min) on the removal efficiency was examined. Adsorption data was evaluated using isotherm models such as Langmuir, Freundlich, and Dubinin-Radushkevich. Isotherm study showed that the Langmuir (R2 > 0.9899; χ2 ≤ 0.91; RMSE ≤ 4.87) model best correlates with the experimental data. Kinetics studies revealed that pseudo-second order equation adequately describes the experimental data (R2 ≥ 0.9951; χ2 ≤ 0.8.33; RMSE ≤ 4.31) where equilibrium was attained after 60 min. Thermodynamics study shows that the As(V) adsorption is non-spontaneous (ΔG0 ≥ 0) and endothermic (ΔH0 = 8.31 J/mol) that would result in an increase in randomness (ΔS0 = 29.10 kJ/mol•K) within the CCB-solution interface. FT-IR analysis reveals that hydroxyl and amino groups are involved in the adsorption of As(V) from groundwater. Results of the present research serve as a tool to determine whether CCB is an environmentally safe and cost effective material that could be utilized in a permeable reactive barrier system for the remediation of As(V) from contaminated groundwater.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Treatment of Contaminated Groundwater via Arsenate Removal Using Chitosan-Coated Bentonite

Yee

Arida²,

Futalan

et al. 2019

Molecules

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“…However, pure chitosan has weak mechanical and chemical properties such as tendency to agglomerate under aqueous conditions and becomes soluble in the presence of weak organic acids such as acetic acid and formic acid . Hence, physical modifications have been developed where the polymer network of chitosan was allowed to expand and precipitate onto the surface of support materials such as PVC beads, natural clay minerals, and sand…”

Section: Introductionmentioning

confidence: 99%

“…The removal of humic acid, tannic acid, basic and reactive dyes using the composite of chitosan and activated clay has been studied as well . Recently, several researches have been made on chitosan‐coated bentonite (CCB) beads and its crosslinked derivatives in the removal of various contaminants such as As(V), In(III), Ni(II), Cu(II), Pb(II), and dibenzothiophene sulfone . However, studies on the removal of nutrient contaminants such as

{normalN normalH}_{4}^{+} ‐ normalN

from wastewater utilizing CCB have been scarce.…”

Section: Introductionmentioning

confidence: 99%

Removal of ammonium‐nitrogen from aqueous solution using chitosan‐coated bentonite: Mechanism and effect of operating parameters

Luna

Futalan²,

Jurado

et al. 2017

J of Applied Polymer Sci

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Wastewater containing high concentration of ammonium‐nitrogen ( normalNnormalH4+‐normalN) is not effectively addressed by biological treatment and when released into water bodies can cause eutrophication. In this study, the removal of normalNnormalH4+‐normalN from simulated wastewater using chitosan‐coated bentonite (CCB) was investigated. The effects of normalNnormalH4+ salt used, pH, CCB dosage, agitation rate, and temperature on the removal of normalNnormalH4+‐normalN were studied. The highest normalNnormalH4+‐normalN removal of 67.5% was attained at the following conditions: initial pH 4.0, CCB dose of 8.0 g, agitation rate of 150 rpm, and temperature of 35 °C. Fourier transform infrared analysis indicated two mechanisms: normalNnormalH4+‐normalN adsorption onto CCB involving hydrogen bonding with hydroxyl groups (OH) and ion exchange between normalNnormalH4+‐normalN and cations present in the interlayer of bentonite. Experimental data follows the pseudo‐second‐order kinetic model (R2 = 0.9964) and Koble–Corrigan isotherm (R2 = 0.9705). Thermodynamic studies showed that the adsorption process is spontaneous (ΔG0 < 0), endothermic (ΔH0 > 0) in nature, and leads to an increase in randomness at the solid–solution interface (ΔS0 > 0). © 2017 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2018, 135, 45924.

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Activated sodium bentonite as an adsorbent for efficient removal of hexavalent chromium: Statistical optimization using Box–Behnken design

Bekele,

Worku,

Duguma

et al. 2024

Environmental Quality Mgmt

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At present, developing countries, including Ethiopia, are undergoing a phase of industrial transformation. As a result, there has been a significant rise in the presence of harmful pollutants in groundwater. The release of deleterious heavy metals, such as Cr (VI), into the surrounding ecosystem is a result of various industrial operations. The present investigation utilized activated sodium bentonite clay as an adsorbent agent to facilitate the elimination of Cr (VI). The clay was subjected to acidification and thermal modification techniques to enhance its adsorption capacity. The investigation involved an examination of the particular surface area, capacity for cation exchange, crystalline properties, functional groups on the surface, and structural morphology. The methylene blue test method was employed to ascertain the maximum specific surface area and cation exchange capacity of the adsorbent, which were found to be 512 m2/g and 65.5 meq/100 g, respectively. The clay mineral composition was analyzed using X‐ray diffraction, which indicated that the primary constituent was montmorillonite. The presence of impurities such as quartz, feldspar, muscovite, cristobalite, and hematite was also detected. The study employed response surface methodology, Box–Benkhen design (RSM‐BBD) to investigate the impact of operational parameters, including agitation time, initial Cr (VI) concentration, and adsorbent dosage. Under the optimal conditions, a removal efficiency of 98.05% was achieved for Cr (VI) for a contact duration of 120 min, a dosage of 3.913 g/L, and an initial concentration of 50 mg/L. The sodium bentonite clay that was activated demonstrated a maximum capacity for adsorption of 22.72 mg/g in regards to the adsorption of Cr (VI). The experimental data were best fitted by the Langmuir isotherm, which exhibited a correlation coefficient of 0.9699. The adsorption kinetics were assessed and determined to adhere to a pseudo‐second‐order pattern, exhibiting a coefficient of determination (R2) value of 0.999. Furthermore, the activated sodium bentonite clay demonstrated remarkable potential for repeated utilization in the adsorption of Cr (VI) ions in aqueous solutions.

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Optimization of As(V) removal using chitosan-coated bentonite from groundwater using Box–Behnken design: effects of adsorbent mass, flow rate, and initial concentration

Cited by 22 publications

References 39 publications

Treatment of Contaminated Groundwater via Arsenate Removal Using Chitosan-Coated Bentonite

Treatment of Contaminated Groundwater via Arsenate Removal Using Chitosan-Coated Bentonite

Removal of ammonium‐nitrogen from aqueous solution using chitosan‐coated bentonite: Mechanism and effect of operating parameters

Activated sodium bentonite as an adsorbent for efficient removal of hexavalent chromium: Statistical optimization using Box–Behnken design

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