Effect of the adsorbent dose in Pb(II) removal by using sugar cane bagasse: Kinetics and isotherms

Tejada-Tovar, Candelaria; Mancilla, Humberto Bonilla; Pino-Moreyra, J. del; Ortega‐Toro, Rodrigo

doi:10.24275/rmiq/ia1101

Cited by 10 publications

(10 citation statements)

References 28 publications

(36 reference statements)

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“…where K 1 , q t and qe are representing model's speed constant, biosorption capacity at time "t" and biosorption capacity at equilibrium, respectively (Lin and Wang, 2009;Tejada-Tovar et al, 2020). The pseudo second order equation is shown below:…”

Section: Kinetic Studiesmentioning

confidence: 99%

Cd (II) and Pb (II) biosorption in aqueous solutions using agricultural residues of Phaseolus vulgaris L.: Optimization, kinetics, isotherms and desorption

Salazar-Pinto¹,

Zea-Linares²,

Salas³

et al. 2020

Rev.Mex.Ing.Quim.

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Section: Kinetic Studiesmentioning

confidence: 99%

Cd (II) and Pb (II) biosorption in aqueous solutions using agricultural residues of Phaseolus vulgaris L.: Optimization, kinetics, isotherms and desorption

Salazar-Pinto¹,

Zea-Linares²,

Salas³

et al. 2020

Rev.Mex.Ing.Quim.

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“…However, only a few reports have considered the analysis of linear and nonlinear equations of models used for breakthrough curves modeling (Dissanayake et al, 2016). Several authors have noted that the application of non-linear regression is more suitable than linear regression (Tejada-Tovar et al, 2020;Villabona-Ortíz et al, 2019). Some authors propose using a proper error analysis method to corroborate this asseveration validity (Unuabonah et al, 2016).…”

Section: Introductionmentioning

confidence: 99%

A discussion on linear and non-linear forms of Thomas equation for fixed-bed adsorption column modeling

González‐López

Laureano-Anzaldo

Pérez‐Fonseca

et al. 2021

RMIQ

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“…In recent years, agricultural wastes have been used in adsorption processes for lead ion (Pb(II)) removal from aqueous solution. Several sources as cocoa pod, banana stem, rice husk, coconut husk, papaya and melon rind, soya waste, grape seeds, nut shells, moringa and cane bagasse have been used to remove Pb 2+ [1][2][3].…”

Section: Introductionmentioning

confidence: 99%

Adsorption of Lead (Ii) from Aqueous Solution Using Adsorbents Obtained from Nanche Stone (Byrsonima Crassifolia)

et al. 2020

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Abstract. The removal capacity of Pb(II) present in aqueous solution was evaluated, using as a sorbent the nanche stone (Byrsonima crassifolia) naturally (NS), modified with citric acid (MNS) and as activated carbon (AC). The point of zero charge (pHPZC) and the active sites (using the Boehm method and FTIR spectroscopy) were determined. The pHPZC of NS, MNS and AC were in an acid range. The concentration of active sites of NS, MNS and AC were 0.1037, 0.1123 y 0.1404 mol/g, respectively. The infrared spectra (FTIR) detected the formation of acid functional sites associated with the phenol group, carboxylic acids and lactones. The adsorption capacity of lead ions using NS, MNS and AC increases with the increment of the pH of the solution from 3 to 5; nevertheless, at pH 5, precipitation of lead ions is observed. Due to the above, the evaluation of the three materials was carried out at pH 4. Comparing the maximum capacity of adsorption of Pb(II) on NS with respect to MNS and AC at pH 4, it was increased in 2.2 and 10 times, respectively. The chemical modification applied to precursor, as well as its formation to AC, improved their adsorption capacity due to a greater generation of acid sites. The experimental data were represented with the models of Langmuir, Freundlich y Prausnitz-Radke and the parameter values of these isotherms were estimated using a least-squares method which utlilizes an optimization algorithm. Resumen. Se evaluó la capacidad de remoción de Pb(II) presente en solución acuosa, utilizando como adsorbente el hueso de nanche (Byrsonima crassifolia) de forma natural (HN), modificado con ácido cítrico (HNM) y como carbón activado CA. Se determinaron el punto de carga cero (pHPZC) y los sitios activos (utilizando el método Boehm y espectroscopía FTIR). El pHPZC del HN, HNM y CA estuvo en un rango ácido. La concentración de sitios ácidos del HN, HNM y CA fueron de 0.1037, 0.1123 y 0.1404 mol/g respectivamente. Los espectros infrarrojos (FTIR), detectaron la formación de sitios funcionales ácidos asociados al grupo fenol, ácidos carboxílicos y lactonas. La capacidad de adsorción del ion plomo con el HN, HNM y CA, aumentó al incrementarse el pH de la solución de 3 a 5; sin embargo, a pH 5, se observó precipitación de iones plomo. Debido a lo anterior, la evaluación de los tres materiales se realizó a pH 4. Comparando la máxima capacidad de adsorción de Pb(II) en el HN con respecto al HNM y al CA a pH 4, se incrementó en 2.2 y 10 veces, respectivamente. La modificación química aplicada al precursor, así como su formación a CA, amplió su poder de adsorción al desarrollarse una mayor cantidad de sitios activos ácidos. Los datos experimentales se representaron con los modelos de Langmuir, Freundlich y Prausnitz-Radke, y los valores de los parámetros de estas isotermas fueron estimados usando un método de mínimos cuadrados que utiliza un algoritmo de optimización.

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Effect of the adsorbent dose in Pb(II) removal by using sugar cane bagasse: Kinetics and isotherms

Abstract: Modelado de la biodegradación en biorreactores de lodos de hidrocarburos totales del petróleo intemperizados en suelos y sedimentos (Biodegradation modeling of sludge bioreactors of total petroleum hydrocarbons weathering in soil and sediments)

Cited by 10 publications

References 28 publications

Cd (II) and Pb (II) biosorption in aqueous solutions using agricultural residues of Phaseolus vulgaris L.: Optimization, kinetics, isotherms and desorption

Cd (II) and Pb (II) biosorption in aqueous solutions using agricultural residues of Phaseolus vulgaris L.: Optimization, kinetics, isotherms and desorption

A discussion on linear and non-linear forms of Thomas equation for fixed-bed adsorption column modeling

Adsorption of Lead (Ii) from Aqueous Solution Using Adsorbents Obtained from Nanche Stone (Byrsonima Crassifolia)

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