Thermodynamic Study and Mathematical Modeling of Adsorption of Co2+ ions on Biopolymers based of Sugarcane Bagasse

Elanza, S.; Taouil, H.; Doubi, M.; Lebkiri, Ahmed; Rifi, E.H.

doi:10.13005/ojc/330667

Cited by 2 publications

(1 citation statement)

References 6 publications

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“…Positive ∆S values also indicate a decrease in randomness at the solid/solution interface (Saleh et al, 2017a;Saleh et al, 2017b) or a structural change between the adsorbent and the metal (Altıntıg et al, 2017). Similar values of ∆G and ∆H for Co(II) bioadsorption were reported by Vilvanathan and Shanthakumar (2015) and Elanza et al (2017). For the bioadsorption of Mn(II) ions, the ∆H, ∆S and ∆G values were negative, indicating an exothermic (physical nature), reversible and spontaneous process not favored by increasing temperature.…”

Section: Metalsupporting

confidence: 86%

Kinetic study and thermodynamic equilibrium modeling of the Co(II) and Mn(II) bioadsorption using the Rhodococcus opacus strain

et al. 2022

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Microbial biomass is considered a renewable and environmentally friendly resource. Thus, the research conducted a kinetic study and thermodynamic equilibrium modeling of the cobalt (Co) and manganese (Mn) bioadsorption process using the Rhodococcus opacus (RO) strain as a biosorbent. The inactive biomass subjected to 0.1 M NaOH pretreatment was brought into contact with synthetic solutions of Co and Mn. The experimental data for the Co(II) and Mn(II) bioadsorption process were fit to the Langmuir model with kads of 0.65 and 0.11 L.mg -1 , respectively. A better statistical fit was also obtained for the pseudo-second order kinetic model (R 2 Co(II) = 0.994 and R 2 Mn(II) = 0.995), with 72.3% Co(II) and 80% Mn(II) removals during the first 10 min. In addition, a higher affinity of RO for the Co(II) ion was observed, with maximum uptake values of 13.42 mg.g -1 ; however, a higher adsorption rate was observed for Mn(II) ion (k = 0.21 g.mg -1 .min -1 at 318 K). The bioadsorption process was spontaneous and dependent on temperature, being endothermic and irreversible for the Co(II) ion (∆H = 2951.91 J.mol -1 ) and exothermic and reversible for the Mn(II) ion (∆H = -2974.8 J.mol -1 ). The kinetic and thermodynamic equilibrium modeling allowed to identify the main mechanisms involved in the biosorption process of both metals. of time and temperature on the biadsorption process was studied, and the experimental data were evaluated using the pseudo-first order and pseudo-second order kinetic models, as well as the Langmuir and Freundlich isotherms.

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Section: Metalsupporting

confidence: 86%

Kinetic study and thermodynamic equilibrium modeling of the Co(II) and Mn(II) bioadsorption using the Rhodococcus opacus strain

et al. 2022

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Development of Mesoporous Geo-Adsorbent Pellets from Low Fire Clay and Cellulose for Removal of Methylene Blue in Aquaculture

Sharma

Qanungo

2021

Asian J. Chem.

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Porous ceramic pellets have been prepared using low fire clay and cellulose as a pore forming agent. The pore size and BET analysis, water absorption capacity and compressive strength of the pellets have been determined. The methylene blue uptake of pellets increased on increasing the percentage of initial cellulose content. Batch mode studies showed that the methylene blue adsorption decreased with increasing dose of pellets, increased with increasing initial dye concentration, while solution pH and presence of co-ions had negligible effect on removal of methylene blue, making them suitable for dye removal over a wide range of pH. The adsorption process followed both the Freundlich and Langmuir adsorption isotherms, whereas the adsorption kinetics followed the pseudo-second-order kinetic model. An inexpensive and simple device consisting of the mesoporous pellets enclosed in a tea ball wire mesh, which can be conveniently dipped and taken out of water in an aquarium and can remove methylene blue, has been developed.

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Thermodynamic Study and Mathematical Modeling of Adsorption of Co2+ ions on Biopolymers based of Sugarcane Bagasse

Cited by 2 publications

References 6 publications

Kinetic study and thermodynamic equilibrium modeling of the Co(II) and Mn(II) bioadsorption using the Rhodococcus opacus strain

Kinetic study and thermodynamic equilibrium modeling of the Co(II) and Mn(II) bioadsorption using the Rhodococcus opacus strain

Development of Mesoporous Geo-Adsorbent Pellets from Low Fire Clay and Cellulose for Removal of Methylene Blue in Aquaculture

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