Adsorptive removal of copper and nickel ions from water using chitosan coated PVC beads

Popuri, Srinivasa R.; Vijaya, Y.; Boddu, Veera M.; Krishnaiah, A.

doi:10.1016/j.biortech.2008.05.041

Cited by 312 publications

(110 citation statements)

References 31 publications

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“…The infrared spectra of the biosorbent both in natura and after acid hydrolysis were recorded with a Bomem-MB spectrometer from 4000 to 400 cm -1 . 14 …”

Section: Characterization Of Biosorbentmentioning

confidence: 99%

Fe (ii) adsorption on Ucides Cordatus crab shells

Porpino¹,

Barreto²,

Cambuim³

et al. 2011

Quím. Nova

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Recebido em 13/5/10; aceito em 12/1/11; publicado na web em 29/3/11In this study Ucides cordatus crab shells were utilized as Fe (II) sorbent as material of low cost and simple preparation. Values of pH of standard solution, biosorbent mass, particles size, contact time (t c ) and initial concentration of the standard solution were optimized. The best conditions were pH = 2.00, t c = 840 min and M c = 0.25 g. The kinetic pseudo first-order model displayed the best description of the adsorption process and the equilibrium study showed that the Langmuir model better describes the adsorption of the Fe (II). There is great affinity between the Fe (II) and the biosorbent.

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“…The infrared spectra of the biosorbent both in natura and after acid hydrolysis were recorded with a Bomem-MB spectrometer from 4000 to 400 cm -1 . 14 …”

Section: Characterization Of Biosorbentmentioning

confidence: 99%

Fe (ii) adsorption on Ucides Cordatus crab shells

Porpino¹,

Barreto²,

Cambuim³

et al. 2011

Quím. Nova

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“…Adsorption by porous solids, as activated carbons, is considered as an effective process for heavy metal removal thanks to its simplicity, low cost, environmental friendliness, processing with no chemical sludge, and high removal efficiency even at diluted concentration (Porpuri et al 2009;Cui et al 2016). The use of agriculture byproducts such as coconut fruit (Anirudhan and Sreekumari 2011), nuts apricot (Tsibranska and Hristova 2010), beet pulp (Pehlivan et al 2008), stems of tea (Amarasinghe and Williams 2007), rice husk (Bakircioglu et al 2003;Wong et al 2003), pentandra hulls (Madhava-Raoa et al 2006)and olive stones-waste (Alslaibi et al 2015;Baccar et al 2009;Gharib and Ouederni 2005), which are inexpensive, abundantly available, and renewable materials, as precursor for activated carbon production, reduces adsorption processing costs (Bailey et al 1999).…”

Section: Introductionmentioning

confidence: 99%

Simultaneous adsorption behavior of heavy metals onto microporous olive stones activated carbon: analysis of metal interactions

Bohli

Ouederni

Villaescusa

2017

Euro-Mediterr J Environ Integr

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The present work reports the synergistic and inhibitory adsorption effects involved in the multicomponent adsorption of heavy metal ions (Cu(II), Ni(II), and Cd(II)) from binary systems using chemically olive stone activated carbon (COSAC) as adsorbent. In order to evaluate the adsorption capacity of COSAC to remove studied heavy metals, adsorption of metal ions in single and binary systems were conducted. Kinetics adsorption rates in binary systems are very fast as compared to that in single ones and well represented by the pseudo second-order. Langmuir and Sips model fit mono-solute adsorption isotherms and the maximum adsorption capacity of COSAC decreased in the following order: Cd(II) [ Ni(II) [ Cu(II). In binary equilibrium systems, the effect of initial concentration of interfering metal ions on the removal of target ones was studied. Different mutual interactions between metal ions dealing with the decrease and the enhancement of inhibitory and synergetic effects were detected. Results showed that the effects on the adsorption of the metal ions in binary mixture strongly depend on the initial concentration of both metal ions in the solution. In most of the scenarios studied, the total amount of metal ions adsorbed was higher than the sum of the ones obtained in single solutions, suggesting synergetic interactions between the two metal ions. This study proves that COSAC is an effective adsorbent for the removal of heavy metals from multicomponent solutions.

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“…Los autores encontraron que el proceso de adsorción del Cr(VI) sigue el mecanismo de pseudo-segundo orden. Similares hallazgos para la cinética de adsorción de Ni(II) fueron también encontrados por Popuri et al (2009) La Fig. 9 muestra el ajuste del modelo de pseudosegundo orden a los datos experimentales de la cinética de adsorción.…”

Section: Cinética De Adsorciónunclassified

Estudio del equilibrio y cinética de adsorción de Cd(II), Ni(II) y Cr(VI) usando Quitosano y Quitosano modificado con cobre

Castro

Cruz

Betanco

et al. 2014

Nexo Revista Científica

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RESUMENEn este trabajo, se estudió el equilibrio y la cinética de adsorción de Cd(II), Ni(II) en quitosano y Cr(VI) en quitosano modificado con cobre. Para ello, soluciones de iones metálicos a diferentes concentraciones, fueron puestas en contacto con el adsorbente y se agitaron por un período de 3 -4 h. Al final del proceso, las muestras fueron analizadas en un espectrómetro de absorción atómica. Los datos experimentales del equilibrio de adsorción de los iones metálicos fueron evaluados aplicando las isotermas de Langmuir y Freundlich; mientras los datos cinéticos fueron evaluados utilizando los modelos cinéticos de pseudo-primer orden y pseudo-segundo orden. Los resultados del proceso demostraron que los iones fueron eficazmente adsorbidos por el quitosano (Cd y Ni) y por el Cuquitosano (Cr). Además, se comprobó que los datos experimentales del equilibrio de adsorción de Cr(VI) y Ni(II) se ajustan al modelo de Langmuir; mientras que los datos experimentales del Cd(II) fueron mejor ajustados por el modelo de Freundlich. Mediante el uso de la isoterma de Langmuir se determinó la capacidad máxima de adsorción de cromo (29.7 mg/g Cu-quitosano), cadmio (102.0 mg/g quitosano) y níquel (83.31 mg/g quitosano). Los resultados de la cinética de adsorción de los iones metálicos mostraron que los datos experimentales fueron mejor ajustados por el modelo de pseudo-segundo orden; es decir, el paso limitante en la velocidad es la reacción de adsorción y no la transferencia de masa.Palabras claves: isotermas de adsorción; cinética de adsorción; modelos cinéticos; metales pesados; quitosano; Cu-quitosano ABSTRACTIn this paper, the equilibrium and adsorption kinetics of Cr(VI), Cd(II) and Ni(II) onto Chitosan and Cu-chitosan was studied. Metal ion solutions at different initial concentration were put in contact with chitosan and Cu-chitosan and the mixture was agitated by 3 -4 h. Afterwards, the samples were analyzed by atomic absorption spectroscopy. The experimental data of adsorption equilibrium were evaluated by application of Langmuir and Freundlich isotherms; while the kinetics experimental data were evaluated using kinetic models of pseudo-first order and pseudo-second order. The results showed that the metallic ions were effectively adsorbed by the chitosan (Cd and Ni) and Cuchitosan (Cr). Besides, it was found that the experimental data of adsorption equilibrium of Cr(VI) and Ni(II) fit the Langmuir model, while the equilibrium adsorption data of Cd(II) were better fitted by Freundlich model. The maximum adsorption capacity of chromium (29.7 mg/g Cu-chitosan), cadmium (102.0 mg/g chitosan) and nickel (83.31 mg/g chitosan) was determined using the Langmuir model. The results of adsorption kinetics of the metallic ions showed that the experimental data were better adjusted by pseudo-second order model. Therefore, the ratelimiting step is the adsorption reaction and not mass transfer processes.

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Adsorptive removal of copper and nickel ions from water using chitosan coated PVC beads

Cited by 312 publications

References 31 publications

Fe (ii) adsorption on Ucides Cordatus crab shells

Fe (ii) adsorption on Ucides Cordatus crab shells

Simultaneous adsorption behavior of heavy metals onto microporous olive stones activated carbon: analysis of metal interactions

Estudio del equilibrio y cinética de adsorción de Cd(II), Ni(II) y Cr(VI) usando Quitosano y Quitosano modificado con cobre

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