Removal of Fluoride Ions by Adsorption onto Fe&lt;sub&gt;2&lt;/sub&gt;O&lt;sub&gt;3&lt;/sub&gt; /Areca Nut Activated Carbon Composite

Joshi, Sahira; Pradhananga, Mandira Adhikari

doi:10.3126/jie.v12i1.16901

Cited by 8 publications

(2 citation statements)

References 9 publications

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“…The methylene blue number was higher than that of other precursors except for areca nut and wood. The results suggested that phosphoric acid develops numerous micropores on the surface of activated carbon which can efficiently adsorb small ions from the aqueous solutions [18] 357 173 Rice husk [36] 367 196 Amaro seed stone [32] 371 256.42 Sugarcane bagasse [37] 814.67 198 Areca nut [38] 888 369 Wood(Thevetia peruviana) [39] 798 532…”

Section: Iodine and Methylene Blue Adsorptionmentioning

confidence: 99%

Remediation of Bagmati River water using activated carbon from Macrotyloma uniflorum (gram horse) seed

Adhikari¹,

Bhatt²

2022

BIBECHANA

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Remediation is a technique that facilitates the removable of pollutants from contaminated water. Activated carbons were prepared from indigenous Macrotyloma uniflorum (gram horse) seed using orthophosphoric acid as an activating agent. The chemically activated gram horse seed powder was carbonized using muffle furnace and characterized using thermo-gravimetric analysis (TGA), x-ray diffraction (XRD), Fourier-transform infrared spectroscopy (FTIR), Boehm titration, methylene blue and iodine numbers. XRD and FTIR spectra indicated that the surface of amorphous activated carbon consisted of acidic and basic functional groups which efficiently adsorb pollutants from the polluted river water. The observed methylene blue and iodine numbers suggested that an impregnation ratio of 1.26:1, three hours of carbonization duration and carbonization temperature of 300 °C were the optimum conditions for the development of micro and mesopores on the surface of the activated carbon prepared from gram horse powder. The maximum adsorption capacity of methylene blue was 312.5 mg/g and that of iodine was 1006.2 mg/g and specific surface area was 1160.44 m2 /g. The both Langmuir and Freundlich model fit well in the methylene blue adsorption. A simple column filtration was used for the purification of river water. Most of the observed water quality parameters of the sample collected from the Bagmati River exceeded the limit recommended by WHO. However, after treatment with gram horse activated carbon, concentrations of measured parameters were reduced to WHO recommended value. More than 60% of the hardness, sulphate and phosphate concentrations were removed and more than 40% of alkalinity and chlorine demand were reduced by activated carbon. Based on the results it is considered that activated carbon from gram horse seed can be an effectively used as bio-adsorbent for the remediation of highly polluted river water. BIBECHANA 19(2022)170-183

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Section: Iodine and Methylene Blue Adsorptionmentioning

confidence: 99%

Remediation of Bagmati River water using activated carbon from Macrotyloma uniflorum (gram horse) seed

Adhikari¹,

Bhatt²

2022

BIBECHANA

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“…Up to the present only few adsorption studies have been carried out by making use of areca components. Activated carbon from areca nut, areca husk, areca coir and heart wood have been exclusively studied as adsorbent for the removal of dyes, acid and heavy metal ions (Joshi and adhikari, 2016;Muslim et al, 2017;Hemashree et al, 2016;Haloi et al, 2011;Chakrabarty et al, 2011). Congo red (CR) is a benzidine bisazo-dye which has variety of applications such as textile dying, indicator, biological stain etc.…”

Section: Introductionmentioning

confidence: 99%

An investigation on the characterization of activated carbon from areca leaves and their adsorption nature towards different dyes

2019

Global NEST Journal

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<p>In this study activated carbon is produced from areca plant leaves, an agricultural waste material. The physical and chemical structural characterisation of the prepared carbon was carried out by FTIR, TGA and XRD analysis. FTIR study showed the presence of several functional groups, such as C=O, C=C, OH, NH on the surface of the activated carbon. To determine the adsorption efficiency, studies were carried out using cationic and anionic dyes and it was found to be dependent on contact time, temperature and concentration of the solution. The experimental data obtained were correlated with the Langmuir, Freundlich isotherm model. Kinetic data were obtained using second order rate equation. Probable mechanism of adsorption process with the dyes was analysed. As the prepared carbon is cost efficient, abundant and has high uptake capacity, it can be used as an adsorbent for fresh water or waste water treatment. It could be considered as promising material for the removal of dyes.</p>

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Activated carbon synthesized from biomass material using single-step KOH activation for adsorption of fluoride: Experimental and theoretical investigation

Bhomick

Supong

Karmaker

et al. 2019

Korean J. Chem. Eng.

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Removal of Fluoride Ions by Adsorption onto Fe<sub>2</sub>O<sub>3</sub> /Areca Nut Activated Carbon Composite

Cited by 8 publications

References 9 publications

Remediation of Bagmati River water using activated carbon from Macrotyloma uniflorum (gram horse) seed

Remediation of Bagmati River water using activated carbon from Macrotyloma uniflorum (gram horse) seed

An investigation on the characterization of activated carbon from areca leaves and their adsorption nature towards different dyes

Activated carbon synthesized from biomass material using single-step KOH activation for adsorption of fluoride: Experimental and theoretical investigation

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