Removal of hexavalent chromium ions from aqueous solution by adsorption using activated carbon prepared from Cucumis Melo Peel Activated carbon

Manjuladevi, M.; Manonmani, S.

doi:10.13005/ojc/310166

Cited by 10 publications

(6 citation statements)

References 15 publications

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“…Charcoal was placed in a muffle furnace, and the carbonization was carried out at 200 °C for 24 h. The carbonized material was ground to fine powder. The resulting material was placed in an air-tight container for further studies [24].…”

Section: Activation Of Charcoalmentioning

confidence: 99%

Chromium (VI) removal from neutral aqueous media using banana trunk fibers (BTF)-reinforced chitosan-based film, in comparison with BTF, chitosan, chitin and activated carbon

Rahim

Haris

2019

SN Appl. Sci.

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Banana trunk fibers (BTF)-reinforced chitosan (BTF-i-CTS) biocomposite film was prepared and characterized by means of Fourier-transform infrared spectroscopy, thermogravimetric analysis and scanning electron microscopy. Characterization of the starting materials and the biocomposite indicated that BTF are widely immobilized in chitosan (CTS) by physical means. The water uptake results of BTF-i-CTS indicated a maximum water uptake of 338.23% with an equilibrium time of 72 h. The starting materials and BTF-i-CTS in comparison with chitin and activated carbon (AC) were used for the removal of Cr 6+ . The effect of pH, contact time and initial concentration was investigated. Contact time of 120 min and pH of ~ 7.00 were selected for the removal of Cr 6+ , at ambient temperature (27 ± 1 °C). The percentage removal of Cr 6+ at pH ~ 7.00 and initial concentration of 50 mg/L using BTF-i-CTS, CTS, BTF, chitin and AC was observed 97. 79, 97.78, 25.79, 36.80 and 23.78%, respectively. The data best-fitted pseudo-second-order kinetic and Freundlich isotherm model indicated that chemisorption is the likely factor for the removal of Cr 6+ .

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Section: Activation Of Charcoalmentioning

confidence: 99%

Chromium (VI) removal from neutral aqueous media using banana trunk fibers (BTF)-reinforced chitosan-based film, in comparison with BTF, chitosan, chitin and activated carbon

Rahim

Haris

2019

SN Appl. Sci.

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“…Results obtained showed that the maximum removal of Cr (VI) was found to be 98 % at pH 3.0 with 250 mg of adsorbent when the concentration of the metal solution was 100 mg dm-3. The kinetics was based on pseudo-second-order equation and the equilibrium data was better fitted to Langmuir and Freundlich models [21]. Also, sugarcane bagasse was utilized as a low cost adsorbent for the removal of Cr (VI) in aqueous solution.…”

Section: Literature Reviewmentioning

confidence: 99%

Equilibrium and Thermodynamic Studies on Adsorption of Hexavalent Chromium from Aqueous Solution onto Low Cost Activated Carbon

Yunusa¹,

Ibrahim²

2020

IJEM

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The removal of hexavalent chromium [Cr(VI)] is a challenging task due to its acute toxicity even at low concentration. In the present study, a low-cost activated carbon (LAC) was prepared from desert date seed shell by chemical activation with H 3 PO 4 and utilized for the removal of hexavalent chromium from aqueous solution. Batch experiments were conducted to investigate the influence of operating variables such as pH, contact time, adsorbent dosage, initial concentration, co-existing ions and temperature. The amount of Cr(VI) adsorbed was found to vary with solution pH and maximum adsorption was observed at a pH value of 2.0. The extent of chromium uptake (mg g-1) was found to increase with increase in initial concentration and contact time. The applicability of the four isotherm models for the present equilibrium data follows the sequence: Freundlich > Temkin > Langmuir > Dubinin-Radushkevich. The mean free energy from the Duninin-Radushkevic isotherm model hinted that the adsorption of Cr(VI) onto the adsorbent surface follows physisorption mechanism. Thermodynamic parameters related to adsorption, Gibbs free energy change (∆G°), enthalpy change (∆H°), entropy change (∆S°), were also calculated and the negative value of ∆H° indicates the exothermic nature of the adsorption process. The considerable adsorption capacity of 99.09 mg g-1 is a signifier of the suitability of the prepared adsorbent for commercial application. The findings implicated that the adsorbent can be employed in the treatment of Cr-bearing water and wastewater.

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“…And it is known that the properties and characteristics of AC, such as porosity and surface area, are essentially determined by the raw material used and the activation method. Therefore, using inexpensive agricultural raw materials poses a challenge in reducing the price of AC and improving its properties [2][3][4][5][6][7]. Moreover, when transforming waste that can have a negative environmental impact into AC, the primary aim must be its elimination [8,9].…”

Section: Introductionmentioning

confidence: 99%

Activated Carbon Prepared from Date Pits Using Microwave Heating

Djillali,

Samia,

Samira

et al. 2024

ETJ

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Activated carbon (AC) adsorption remains one of the most technically efficient water treatment processes. However, its high preparation cost, mainly due to energy-intensive methods, has led to research on developing efficient and cost-effective preparation methods using less expensive materials such as agricultural waste. The objective of our study was to use date pits for the preparation of AC that can be used for water treatment (Adsorption and elimination of dyes). For the activation process, a microwave radiation under steam method was employed. The AC prepared from date pits /H3PO4/carbonization 400°C using the steam-microwave radiation activation technique (radiation time: 15 minutes, power: 700W) demonstrated promising results. The adsorption tests show 80% removal rate of the reactive dye (Drimaren ROT CL-5B GR) from water. This study highlights the potential of date pits as a viable source for producing AC from bio-material. The obtained product was analysed by FTIR and MEB.

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Removal of hexavalent chromium ions from aqueous solution by adsorption using activated carbon prepared from Cucumis Melo Peel Activated carbon

Cited by 10 publications

References 15 publications

Chromium (VI) removal from neutral aqueous media using banana trunk fibers (BTF)-reinforced chitosan-based film, in comparison with BTF, chitosan, chitin and activated carbon

Chromium (VI) removal from neutral aqueous media using banana trunk fibers (BTF)-reinforced chitosan-based film, in comparison with BTF, chitosan, chitin and activated carbon

Equilibrium and Thermodynamic Studies on Adsorption of Hexavalent Chromium from Aqueous Solution onto Low Cost Activated Carbon

Activated Carbon Prepared from Date Pits Using Microwave Heating

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