Removal of cadmium from aqueous solutions by adsorption onto orange waste

Pérez-Marín, A.B.; Zapata, V. Meseguer; Ortuño, J.; Aguilar, María José Coperías; Sáez, J.; Lloréns, Mercedes

doi:10.1016/j.jhazmat.2006.06.008

Cited by 565 publications

(290 citation statements)

References 39 publications

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“…The Elovich model, originally proposed by Roginsky and Zeldovich (1943) (McLintock 1967) has been used to describe the sorption kinetics of gases on heterogeneous surfaces (Low 1960) and also to study the heterogeneous sorption kinetics of many types of systems (Chien and Clayton 1980;Ho and McKay 1998a;Igwe and Abia 2007;Pavlatou and Polyzopoulos 1988;Perez-Marin et al 2007). The traditional linear form of the Elovich model, as given by Perez-Marin et al (2007) is:…”

Section: Model Backgroundmentioning

confidence: 99%

Kinetic model selection and the Hill model in geochemistry

Turner

Henley

Sleap

et al. 2014

Int. J. Environ. Sci. Technol.

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This study introduces the Hill model for modelling sorption kinetics and illustrates its efficacy using formal model selection procedures. Although the coefficient of determination (R 2 ) value can be used to ensure goodness-of-fit of a particular model to a set of data, a measure that incorporates the number of model parameters, such as the Bayesian information criterion, law of iterated logarithm criterion, Akaike information criterion, and the extra sum-of-squares F-test is necessary to undertake reliable model selection. This study undertook a formal model selection procedure based on these criteria, in combination with the coefficient of determination, for a range of candidate kinetics sorption models [the pseudo-second order (PSO), the intra-particle diffusion (IPD), Power, Elovich, and the four and five parameter Hill models]. It was found that the model order that statistically best described the data was Hill 5 [ Hill 4 [ pseudo-second order [ Elovich [ Power [ IPD as given by the evidence ratios, information criterion weights and Bayes factors. The extra sum-of-squares F-test, only applicable to nested models, confirms the best fit order as Hill 5 [ Hill 4 [ PSO models. Two new parameters (T and k Hill ) have also been defined that give the Hill models a mechanistic meaning directly comparable to the well-defined parameters of the pseudo-second-order model, namely, the pseudo-secondorder rate constant k pso and the instantaneous sorption coefficient h pso . In the field of geochemistry the use of the four and five parameter Hill models for describing sorption kinetics has been overlooked with many studies favouring the PSO model. It is strongly recommended that the Hill model be considered more widely as a general predictive tool in geochemistry.

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Section: Model Backgroundmentioning

confidence: 99%

Kinetic model selection and the Hill model in geochemistry

Turner

Henley

Sleap

et al. 2014

Int. J. Environ. Sci. Technol.

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“…The optimum time and pH for Cr(VI) removal was 100 min and pH 1.0, at constant values of biosorbent dosage (1 g/100 mL), initial metal concentration (50 mg/L), and temperature (30˚C). The literature [12], report a optimum time of 60 min, for the remotion of lead by orange Shell, 30 min and 2 hours for the remotion of Cr(VI) by the tamarind shell and eucalyptus bark [13,16]. Changes in the permeability of unknown origin, could partly explain the differences found in the incubation time, providing greater or lesser exposure of the functional groups of the cell wall of biomass analyzed.…”

Section: Determination Of Hexavalent Trivalent and Total Crmentioning

confidence: 99%

“…Therefore any active metabolic uptake process is currently considered to be a negligible part of biosorption. Various biosorbents have been tried, which include seaweeds, moulds, yeast, bacteria, crab shells, agricultural products such modified corn stalks, [10], hazelnut shell [11], orange shell [12] tamarind shell [13]. It has also been reported that some of these biomass can reduce Chromium(VI) to Chromium(III), like tea fungal biomass [14]; Mesquite [15], Eucalyptus bark [16], red roses waste biomass [17], and Yohimbe bark [18].…”

Section: Introductionmentioning

confidence: 99%

Hexavalent Chromium Removal by Citrus limonium Shell

Vargas-Morales¹,

Bautista-Mata²,

González³

et al. 2012

OJINM

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We studied the Chromium(VI) removal capacity in aqueous solution by the lemon shell, using the diphenylcarbazide method to evaluate the metal concentration. So, the highest biosorption of the metal (50 mg/L) occurs within 100 minutes, at pH of 1.0, and 28˚C. According to temperature, the highest removal was observed at 60˚C, in 11 minutes, when the metal (1 g/L) is completely adsorbed. At the analyzed concentrations of Cr(VI), lemon shell, showed excellent removal capacity, besides it removes efficiently the metal in situ (97.2% removal, 7 days of incubation, 5 g of biomass). After 1 hour of incubation the studied biomass reduces 1.0 g of Cr(VI) with the simultaneous production of Cr(III); so it can be used to eliminate it from industrial wastewater.

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“…[3] It has been released to the environment through the combustion of fossil fuels, metal production, application of screens. [4] The problems associated with heavy metal pollution could be reduced or minimized by precipitation, ultra filtration, electrode deposition, reverse osmosis, electrochemical treatments, membrane filtration, evaporation, flotation, oxidation-reduction and biosorption. [5] Among the different treatments described above, Adsorption has been found to be an effective, conventional and economic method with high potential for the removal, recovery, and recycle of toxic metals from waste water.…”

Section: Introductionmentioning

confidence: 99%

Highly Efficient Adsorption of Cd(ii) From Aqueous Solutions by Aluminum Oxide Nanoparticles

Hussain¹

2017

WJPPS

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In this study, Aluminum oxide nanoparticles were evaluated for Cd (II) removal from aqueous solution by batch adsorption method. The batch experiments showed that Aluminum oxide nanoparticles can be effectively used to remove Cd (II) from aqueous solution. Maximum removal of Cd (II) was obtained at pH=6 and adsorption equilibrium was achieved in 30 min. The adsorption kinetics well fitted using pseudo second-order kinetic model. The heavy metals sorption has been well explained using Langmuir and Freundlich isotherm model.The results indicated that the high adsorption capacity of Aluminum oxide nanoparticles makes them promising material for heavy metal ions removal from water samples.

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Removal of cadmium from aqueous solutions by adsorption onto orange waste

Cited by 565 publications

References 39 publications

Kinetic model selection and the Hill model in geochemistry

Kinetic model selection and the Hill model in geochemistry

Hexavalent Chromium Removal by Citrus limonium Shell

Highly Efficient Adsorption of Cd(ii) From Aqueous Solutions by Aluminum Oxide Nanoparticles

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