Isotherm, kinetics and thermodynamic parameters study of arsenic (III) and copper (II) adsorption onto Limonia acidissima shell carbon

Yadav, Virender; Tiwari, D. P.; Bhagat, Mamta

doi:10.5004/dwt.2020.25369

Cited by 15 publications

(6 citation statements)

References 59 publications

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“…Based on the kinetic adsorption parameters (Table -4), the highest value of R 2 in the pseudo second order adsorption model for RSL and ACSL indicate the best fitting of the data and adsorption of BG dye on RSL and ACSL follows pseudo-second order model. Moreover, these results demonstrated that the adsorption of BG dye on both adsorbents confirms the chemisorption process [32].…”

Section: Dubinin-radushkevich (D-r) Adsorption Isothermsupporting

confidence: 60%

“…The E values are crucial parameters in the D-R isotherm for determining the types of adsorption, namely physical and chemical adsorption. The E is lower than 8 kJ/mol, physical adsorption dominates and if the value of E is in range 8 to 16 kJ/mol, the adsorption process explained the chemical adsorption [32,38]. In this study, the values of E obtained were 0.2356 and 0.8402 for adsorption of BG dye on RSL and ACSL, respectively, which indicate that the physical adsorption in both adsorbents [32].…”

Section: Dubinin-radushkevich (D-r) Adsorption Isothermmentioning

confidence: 46%

“…A peak at 1416 cm -1 showed the bending O-H group, similarly the peaks at 1052 cm -1 and 648 cm -1 demonstrated the strong C-O stretching and strong C-I stretching functional groups, respectively on the surface of RSL adsorbents. The possible available active sites and structural changes follow after the activation of raw adsorbents (RSL) [29,32]. So, in ACSL adsorbent surface some peaks are new generated, shifted and disappeared, for example the peaks 3904 cm -1 and 2127 cm -1 are disappeared, whereas the peak at 3458 was shifted to 3421 cm -1 ; 1416 cm -1 to 1435 cm -1 ; 1052 cm -1 to 1070 cm -1 and 648 cm -1 to 641 cm -1 .…”

Section: Characterization Of Adsorbentsmentioning

confidence: 99%

“…The E is lower than 8 kJ/mol, physical adsorption dominates and if the value of E is in range 8 to 16 kJ/mol, the adsorption process explained the chemical adsorption [32,38]. In this study, the values of E obtained were 0.2356 and 0.8402 for adsorption of BG dye on RSL and ACSL, respectively, which indicate that the physical adsorption in both adsorbents [32]. The correlation coefficients R 2 of D-R isotherm were 0.9306 and 0.9681 for adsorption of BG dye on ACSL and RSL, respectively.…”

Section: Dubinin-radushkevich (D-r) Adsorption Isothermmentioning

confidence: 99%

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Adsorption of Brilliant Green Dye Using Raw and Activated Adsorbent Prepared from Sesbania Leaves

Yadav,

Sharma,

Yadav

2024

ajc

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In present study, the adsorption of brilliant green (BG) dye from an aqueous solution using raw sesbania leaves (RSL) and activated adsorbent of sesbania leaves (ACSL), batch adsorption studies were carried out to evaluate the effects of various parameters such as contact time, initial concentration, adsorbent dosage, pH and temperature on the removal of BG dye from aqueous solution. The maximum percentage removal of BG dye using RSL and ACSL was 73.2 and 93.8, respectively. The best-fitted isotherm for equilibrium data was Freundlich’s and Langmuir’s for ACSL and RSL adsorbents, respectively. The maximum adsorption capacities obtained were 158.74 mg/g and 98.41 mg/g for adsorption of BG dye on ACSL and RSL, respectively. The pseudo-second-order model best fit for the adsorption kinetic studies, which showed that the adsorption of BG dye on both adsorbents (RSL and ACSL) was limited by the chemisorption process. Thermodynamics parameters such as (ΔGº), (ΔHº) and (ΔSº) were also calculated. At 293 K to 333 K, the values of ΔGº lie in the range of 0.9346 to 1.1971 and 6.1199 to 9.0231 for RSL and ACSL, respectively, indicating that the adsorption process is spontaneous and endothermic.

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Section: Dubinin-radushkevich (D-r) Adsorption Isothermsupporting

confidence: 60%

Section: Dubinin-radushkevich (D-r) Adsorption Isothermmentioning

confidence: 46%

Section: Characterization Of Adsorbentsmentioning

confidence: 99%

Section: Dubinin-radushkevich (D-r) Adsorption Isothermmentioning

confidence: 99%

See 2 more Smart Citations

Adsorption of Brilliant Green Dye Using Raw and Activated Adsorbent Prepared from Sesbania Leaves

Yadav,

Sharma,

Yadav

2024

ajc

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“…Characterization of adsorbents SEM Fly ash can be thoroughly examined using SEM 31 , which provides information on the material's morphological characteristics, particle size distribution, surface roughness, and aggregation state. The morphological structure of fly ash was shown in the Fig.…”

Section: Resultsmentioning

confidence: 99%

Fly Ash-based Adsorption for Hexavalent Chromium Removal in Aqueous Systems: A Promising Eco-Friendly Technique

Yadav,

Goyal

et al. 2024

Orient. J. Chem

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Heavy-metal pollution has been and continues to be significantly influenced by excessive Cr(VI) emissions; recently, there has been a lot of interest in the emergence of a low-cost, secure, and effective technology for removing of Chromium from wastewater. Fly ash has been used in the present study for Hexavalent chromium adsorption. Characterized for their elemental composition, functional groups, and surface morphology, the impacting aspects of the adsorbent were explored. In this study, the chromium adsorption parameters were optimized and the prediction models were strengthened using the response surface methodology (RSM) and box behnken design (BBD). High regression coefficient (R2>0.98), insignificant lack of fit (0.52), high F-value, and low P-value (0.05) were all indicators of the quadratic model's good agreement with the predicted values. Adsorbent dose of 200 mg/100 ml, initial Cr (VI) concentration of 20 mg/L, contact time of 90 min, and pH of 1.0 were the optimal adsorption conditions. The cost-effectiveness, ease of modification, and high efficiency of fly ash make it a promising candidate for large-scale applications in addressing chromium pollution in wastewater.

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Competitive Bioadsorption of Pb+2 and Cu+2 Ions by Caryocar coriaceum WITTM. Barks

Menezes

Filho

Costa

et al. 2023

Water Air Soil Pollut

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Isotherm, kinetics and thermodynamic parameters study of arsenic (III) and copper (II) adsorption onto Limonia acidissima shell carbon

Cited by 15 publications

References 59 publications

Adsorption of Brilliant Green Dye Using Raw and Activated Adsorbent Prepared from Sesbania Leaves

Adsorption of Brilliant Green Dye Using Raw and Activated Adsorbent Prepared from Sesbania Leaves

Fly Ash-based Adsorption for Hexavalent Chromium Removal in Aqueous Systems: A Promising Eco-Friendly Technique

Competitive Bioadsorption of Pb+2 and Cu+2 Ions by Caryocar coriaceum WITTM. Barks

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