Biodegradable composite adsorbent of modified cellulose and chitosan to remove heavy metal ions from aqueous solution

Rahaman, Md. Hafezur; Islam, Md Ataul; Rahman, Md. Aminur; Alam, Sultan

doi:10.1016/j.crgsc.2021.100119

Cited by 59 publications

(27 citation statements)

References 44 publications

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“…The various advantages offered by this technique are simple design, low cost and target specificity. 1 Biosorption studies using a natural polymer in its native or modified state are gaining more importance nowadays. A number of naturally occurring polymers that are abundantly available in nature and upon proper treatment have been reported as effective adsorbents are cellulose, 2–4 chitin 5,6 and chitosan, 7–11 alginates, 12,13 clays, 14 magnetic ferrites 15,16 and resins.…”

Section: Introductionmentioning

confidence: 99%

Mesoporous Fe–Al-doped cellulose for the efficient removal of reactive dyes

et al. 2022

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Section: Introductionmentioning

confidence: 99%

Mesoporous Fe–Al-doped cellulose for the efficient removal of reactive dyes

et al. 2022

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“…Looking into the previous studies, many researchers have developed adsorbents for Cd and Pb 2+ . The study reported by Rahaman et al 34 revealed that jute derived cellulose composite effectively adsorbed Cd, Pb 2+ ions, and maximum efficiency was achieved at 85% and 90%, respectively. Liang et al 35 prepared thiol functionalized sepiolite for heavy metal ion adsorption.…”

Section: Resultsmentioning

confidence: 92%

Development of high-performance filter from Agave americana fibre/polyacrylonitrile nanofibre membrane for Cd, Pb (II) and organic contaminants removal from aqueous solution

Thimmiah

Nallathambi

2022

Journal of Industrial Textiles

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Constructing an easily recyclable and reusable filter is highly efficient for removing Cd, Pb2+ and organic contaminants from aqueous solution. This study investigates the optimization of Cd, Pb2+ adsorption process by thiol functionalized Agave americana fibre. Additionally, polyacrylonitrile (PAN) nanofibre membrane is used as a substrate to filter the organic contaminants. The properties of adsorbents are characterized by various techniques such as Attenuated Total Reflection- Fourier transforms infrared spectroscopy (ATR-FTIR), tensile tester and scanning electron microscopy (SEM). The filter’s performance has been investigated with three variables of thiol functionalized fibre packing density, length of the functionalized fibre and nanofibre spinning time. The fibre packing density and nanofibre spinning time are the most significant parameters that affect all responses. The impact of independent variables on responses has been critically analysed. The optimized filter is identified by regression analysis. The developed filter satisfies heavy metal ion adsorption (Cd, Pb2+) and organic contaminants.

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“…However, in the experiment, when the pH value exceeded 4, there was a clear reduction in the removal efficiency of the adsorbent, likely due to hydroxide ions in the solution precipitating the metal ions and forming Co(OH)2, Cd(OH)2 and Ni(OH)2 [6]. This result is associated with the adsorption behavior of modified cellulosechitosan adsorbent [26], cellulose acetate/zeolite composite fiber adsorbent [16], and silica nanotubes (SNTs) adsorbent [23], as the trends for absorption percentage of heavy metal ions decrease with increasing of pH more than 4. Thus, pH 4 was chosen as the optimal level to eliminate any potential precipitate.…”

Section: Effect Of Phmentioning

confidence: 90%

Adsorption Behavior of Heavy Metal Ions by Hybrid Inulin-TEOS for Water Treatment

et al. 2022

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The present work reports the adsorption behavior involved in the adsorption of heavy metal ions using a hybrid inulin-tetraethoxysilane (TEOS) adsorbent produced through the sol-gel process. An aqueous multi-element solution was used in order to examine the inulin-TEOS adsorbent efficiency in removing Cd2+, Co2+, and Ni2+ ions. The effects of the contact duration, adsorbent dosage, initial concentration, and solution pH on the adsorption of the targeted metal ions in batch systems were evaluated. The optimal conditions for the removal of all targeted heavy metals were as follows: 30 mg of an adsorbent dosage at pH 4 and 5 minutes of contact time with an initial concentration of 0.5 mg/L. A one-way analysis of variance (one-way ANOVA) with a replication test showed that all parameters had significant differences at a p-value of 0.05. At the optimum condition, 92.59%, 90.27%, and 86.472% of Cd2+, Ni2+, and Co2+ were removed, respectively. Findings from kinetic studies suggest that the pseudo-second order model can successfully describe the overall adsorption process. Additionally, the adsorption process can be adequately explained using an intra-particle diffusion model with diffusion rate constants following the sequence of Kint,1 > Kint,2 for Co2+ and Ni2+ and Kint,1 > Kint,2 > Kint,3 for Cd2+ in each step. The results suggest that Ni2+ fits with the Langmuir isotherm, while Cd2+ and Co2+ better fit the Freundlich one. Finally, the adsorbent can be reused and is able to retain a good percentage of removal, with percentage difference decreases of 1.99%, 3.29%, and 4.12% for Cd2+, Ni2+, and Co2+, respectively, after the fifth cycle. The hybrid inulin-TEOS bio-sorbent has good adsorption capacity and durability, which could offer a low-cost practical cleaner production process for removing targeted analytes from wastewater. Doi: 10.28991/CEJ-2022-08-09-03 Full Text: PDF

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Biodegradable composite adsorbent of modified cellulose and chitosan to remove heavy metal ions from aqueous solution

Cited by 59 publications

References 44 publications

Mesoporous Fe–Al-doped cellulose for the efficient removal of reactive dyes

Mesoporous Fe–Al-doped cellulose for the efficient removal of reactive dyes

Development of high-performance filter from Agave americana fibre/polyacrylonitrile nanofibre membrane for Cd, Pb (II) and organic contaminants removal from aqueous solution

Adsorption Behavior of Heavy Metal Ions by Hybrid Inulin-TEOS for Water Treatment

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