Kinetic and Equilibrium Study on Biosorption of Chromium using Tamarind Fruit Shell

Bangaraiah, P.

doi:10.5958/0974-360x.2020.00421.7

Cited by 5 publications

(4 citation statements)

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“…The most common equations that relate thermodynamic parameters are the change in Gibbs free energy (Δ 0 ), enthalpy (Δ 0 ), and entropy (Δ 0 ) in steady state (Tran, You, Hosseini-Bandegharaei, and Chao, 2017). As was reported previously, Cr(VI) adsorption by using coconut shells is endothermic, spontaneous, and irreversible (Ijeamaka, Christian, Fabian, MaryJane, and Joseph, 2018) and tamarind shells behave similarly (Bangaraiah, 2020). By contrast, adsorption by means of corn residues is reversible, favourable, spontaneous, and endothermic (Núñez-Zarur, Tejada-Tovar, Villabona-Ortíz, Acevedo, and Tejada-Tovar, 2018).…”

Section: Introductionmentioning

confidence: 89%

Adsorption Thermodynamics of Cr(VI) Removal by using Agro-Industrial Waste of Oil Palm Bagasse and Plantain Peels

2020

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The effect of temperature on the adsorption of Cr (VI) was determined with waste materials from the agroindustry, such as palm bagasse and plantain peels, by determining the thermodynamic parameters which allow to establish the mechanisms that control the process. The methodology included an initial preparation of the biomass, its characterization, and subsequent adsorption tests by setting the initial concentration of the metal to 100 ppm, a particle size of 0,5 mm, a biomass amount of 0,325 g, pH 2, and a volume of 100 mL. The process temperature varied between 303,15, and 352,15 K. The concentration of the remaining metal in the solution was performed using the diphenyl carbazide colorimetric method through a UVVis spectroscopy at a wavelength of 540 nm. The results show that the effect of temperature does not present a defined trend for palm bagasse, whereas it is linear for adsorption using plantain peels. Furthermore, the process of adsorption of Cr (VI) with palm bagasse is more favorable at higher temperatures, since it is a spontaneous process with a physical adsorption mechanism. On the other hand, the adsorption process with plantain peels is thermodynamically feasible at temperatures from 40 to 55 °C and not spontaneous at higher temperatures. Also, a physicochemical adsorption mechanism was evinced. It is concluded that the use of the studied materials is possible in the removal of the Cr (VI) ion in aqueous solutions.

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Section: Introductionmentioning

confidence: 89%

Adsorption Thermodynamics of Cr(VI) Removal by using Agro-Industrial Waste of Oil Palm Bagasse and Plantain Peels

2020

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“…Bangaraiah et al reported that these irregular surface structures provide a good surface for heavy metal adsorption. 16 After the adsorption of lead and zinc on the biosorbent, FESEM images in Figure 2b,c showed some changes on the biosorbent surface, which signifies the adsorption of these heavy metals. Flake-like deposits formed on the biosorbent surface after contact with Pb(II) ions and interactions with the Zn(II) ions made the biosorbent surface smooth.…”

Section: Resultsmentioning

confidence: 94%

“…oleifera leaves before adsorption to be rough and irregular in shape, with broken edges displayed in Figure a. Bangaraiah et al reported that these irregular surface structures provide a good surface for heavy metal adsorption . After the adsorption of lead and zinc on the biosorbent, FESEM images in Figure b,c showed some changes on the biosorbent surface, which signifies the adsorption of these heavy metals.…”

Section: Results and Discussionmentioning

confidence: 95%

“…Recent studies focus on employing biomass to eliminate heavy metals effectively from effluents. Various biosorbents that have previously been shown to be effective for heavy metal removal are Urtica dioica leaves, Curcuma longa leaf powder, brewed tea waste, Laurus nobilis leaves, Citrus grandis (pomelo) leaves, tamarind fruit shells, lemon, bean and artichoke shells, banana biochar, Moringa oleifera seeds, leaves of Corchorus olitorius, Saccharum bengalense, durian peels, rose biomass, cellulose metallothionein, Peganum harmala seeds, cedar leaf ash, M. oleifera pods, eggshells, coconut tree sawdust (CTS), and sugarcane bagasse .…”

Section: Introductionmentioning

confidence: 99%

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Central Composite Design for Adsorption of Pb(II) and Zn(II) Metals on PKM-2 Moringa oleifera Leaves

Jayan

Akbar

2021

ACS Omega

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Biosorption is a very effective technique to eliminate the heavy metals present in the wastewater that utilize nongrowing biomass. The adsorption ability of the Periyakulam-2 (PKM-2) variety of Moringa Oleifera leaves (MOLs) to eliminate Pb(II) and Zn(II) ions from an aqueous solution was examined in this work. Fourier transform infrared (FTIR) spectroscopy, field-emission scanning electron microscopy, energy-dispersive X-ray (EDX) analysis, X-ray powder diffraction, and Brunauer–Emmett–Teller methods were used to characterize the PKM-2 variety of MOLs. The set of variables consists of the metal ion initial concentration, a dosage of the adsorbent, and pH were optimized with the help of the response surface methodology to get maximum metal removal efficiency of lead and zinc metals using the PKM-2 MOL biosorbent. A maximum Pb(II) removal of 95.6% was obtained under the condition of initial concentration of metal ions 38 mg/L, a dosage of the adsorbent 1.5 g, and pH 4.7, and a maximum zinc removal of 89.35% was obtained under the condition of initial concentration of metal ions 70 mg/L, a dosage of the adsorbent 0.6 g, and pH 3.2. The presence of lead and zinc ions on the biosorbent surface and the functional groups involved in the adsorption process were revealed using EDX and FTIR analysis, respectively. The adsorption data were evaluated by employing different isotherm and kinetic models. Among the isotherm models, Langmuir’s isotherm showed that the best fit and maximum adsorption capacities are 51.71 and 38.50 mg/g for lead and zinc, respectively. Kinetic studies showed accordance with the pseudo-second-order model to lead and zinc metal adsorption. Thermodynamic parameters confirmed (ΔG° < 0, ΔH° < 0, and ΔS° > 0) that the sorption mechanism is physisorption, exothermic, spontaneous, and favorable for adsorption. The results from this study show that the MOL of the PKM-2 type is a promising alternative for an ecofriendly, low-cost biosorbent that can effectively remove lead and zinc metals from aqueous solutions.

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Biosorption of Chromium and Lead from Electroplating Industry Effluent Using Modified Cane Bagasse

Pagala

2023

J. Inst. Eng. India Ser. D

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Kinetic and Equilibrium Study on Biosorption of Chromium using Tamarind Fruit Shell

Cited by 5 publications

References 0 publications

Adsorption Thermodynamics of Cr(VI) Removal by using Agro-Industrial Waste of Oil Palm Bagasse and Plantain Peels

Adsorption Thermodynamics of Cr(VI) Removal by using Agro-Industrial Waste of Oil Palm Bagasse and Plantain Peels

Central Composite Design for Adsorption of Pb(II) and Zn(II) Metals on PKM-2 Moringa oleifera Leaves

Biosorption of Chromium and Lead from Electroplating Industry Effluent Using Modified Cane Bagasse

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