Adsorption of methylene blue onto powdered activated carbon immobilized in a carboxymethyl sago pulp hydrogel

Dahlan, Nuraina Anisa; Sh, Ng; Pushpamalar, Janarthanan

doi:10.1002/app.44271

Cited by 28 publications

(17 citation statements)

References 43 publications

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“…Cellulose and activated charcoal have been studied earlier for their arsenic removal efficiency from water in which cellulose triacetate and activated charcoal were combined by solvent cast method to fabricate nanofiltration membranes . Dye adsorption studies of activated carbon (AC) immobilized on carboxymethyl sago pulp have been studied and are found to be easier (no need for separation) when compared to the use of powdered form of AC directly in treatment plants . PVP has been used in fabrication of water treatment membranes for its pore forming property .…”

Section: Introductionmentioning

confidence: 99%

Low‐cost and biodegradable cellulose/PVP/activated carbon composite membrane for brackish water treatment

Ramadoss

Regi

Rahman

et al. 2019

J of Applied Polymer Sci

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A simple fabrication of a biodegradable membrane for use in water purification systems is presented in this work. Sodium carboxymethyl cellulose and PVP are dissolved in water and crosslinked with citric acid. The presence of glycerol has given immense flexibility and mechanical strength to the membrane. The addition of activated charcoal has enhanced its purification and dye adsorption capabilities at room temperature in dark and light conditions. The polymer semiconductor composites are completely soil degradable within a week and the membrane also exhibits good electrical conductivity when compared to the membrane without charcoal. The addition of glycerol has acted as molecular spacer between polymers composite's monomer backbone that allows good electron mobility of 9.9 cm2 V−1 s−1. The dye adsorption efficiency of the material with two commonly used toxic textile dyes is found to be 100% for methyl orange and up to 57% for Rhodamine B within 3 h. The material shows good dye adsorption efficiency under dark and light conditions with acidic, neutral, and alkaline pH. Salt rejection was also found to increase from 25.3 to 64.4% with applied voltage. © 2019 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2020, 137, 48746.

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Section: Introductionmentioning

confidence: 99%

Low‐cost and biodegradable cellulose/PVP/activated carbon composite membrane for brackish water treatment

Ramadoss

Regi

Rahman

et al. 2019

J of Applied Polymer Sci

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“…Adsorption kinetics was used to test the linearity between time and adsorption capacity. The usual models include the pseudo-first-order kinetic Equation (8) and the pseudo-second-order kinetic Equation (9) [60]. Pseudo first order kinetic model has the following equation:…”

Section: Adsorption Kineticsmentioning

confidence: 99%

Cationic Dye Removal Using Novel Magnetic/Activated Charcoal/β-Cyclodextrin/Alginate Polymer Nanocomposite

Yadav¹,

Asthana²,

Chakraborty³

et al. 2020

Nanomaterials

148

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New magnetic iron oxide (Fe3O4)/activated charcoal (AC)/β-cyclodextrin (CD)/sodium alginate (Alg) polymer nanocomposite materials were prepared by direct mixing of the polymer matrix with the nanofillers. The obtained materials were utilized as nano-adsorbents for the elimination of methylene blue (MB), a hazardous water-soluble cationic dye, from aqueous solutions, and showed excellent regeneration capacity. The formation of the nanocomposites was followed by high-resolution transmission electron microscopy (HRTEM), scanning electron microscopy (SEM) equipped with energy dispersive X-ray spectrometry (EDX), Fourier-transform infrared spectroscopy (FTIR), vibrating sample magnetometer (VSM), X-ray diffraction (XRD) and adsorption of N2 at −196 °C. The rate of adsorption was investigated varying several factors, namely contact time, pH, amount of adsorbent and MB concentration on the adsorption process. Studies dealing with equilibrium and kinetics were carried out in batch conditions. The obtained results indicated that the removal rate of MB was 99.53% in 90 min. Langmuir’s isotherm fitted better to the equilibrium data of MB. Fe3O4/AC/CD/Alg polymer beads shows amazing adsorption capacities in the elimination of cationic dyes (2.079 mg/g for polymer gel beads and 10.63 mg g−1 for dry powder beads), in comparison to other adsorbent materials. The obtained adsorbent is spherical with hydrophobic cross-linked surface properties that enable an easy recovery without any significant weight loss of in the adsorbent used.

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“…MB acts as a drug model with many uses in clinical medicine including antimalarial agents, in the treatment of early Alzheimer's and methemoglobinemia [26][27][28]. Furthermore, MB is commonly used as preliminary test for hydrogel-controlled release and adsorption studies [29][30][31].…”

Section: Introductionmentioning

confidence: 99%

Hydrogel Nanofibers from Carboxymethyl Sago Pulp and Its Controlled Release Studies as a Methylene Blue Drug Carrier

Kanafi

Rahman

Rosdi

et al. 2019

Fibers

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The potential use of carboxymethyl sago pulp (CMSP) extracted from sago waste for producing hydrogel nanofibers was investigated as a methylene blue drug carrier. Sago pulp was chemically modified via carboxymethylation reaction to form carboxymethyl sago pulp (CMSP) and subsequently used to produce nanofibers using the electrospinning method with the addition of poly(ethylene oxide) (PEO). The CMSP nanofibers were further treated with citric acid to form cross-linked hydrogel. Studies on the percentage of swelling following the variation of citric acid concentrations and curing temperature showed that 89.20 ± 0.42% of methylene blue (MB) was loaded onto CMSP hydrogel nanofibers with the percentage of swelling 4366 ± 975%. Meanwhile, methylene blue controlled release studies revealed that the diffusion of methylene blue was influenced by the pH of buffer solution with 19.44% of MB released at pH 7.34 within 48 h indicating the potential of CMSP hydrogel nanofibers to be used as a drug carrier for MB.

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Adsorption of methylene blue onto powdered activated carbon immobilized in a carboxymethyl sago pulp hydrogel

Cited by 28 publications

References 43 publications

Low‐cost and biodegradable cellulose/PVP/activated carbon composite membrane for brackish water treatment

Low‐cost and biodegradable cellulose/PVP/activated carbon composite membrane for brackish water treatment

Cationic Dye Removal Using Novel Magnetic/Activated Charcoal/β-Cyclodextrin/Alginate Polymer Nanocomposite

Hydrogel Nanofibers from Carboxymethyl Sago Pulp and Its Controlled Release Studies as a Methylene Blue Drug Carrier

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