Adsorption behavior of Cd(II) from aqueous solutions onto gel-type weak acid resin

Xiong, Chunhua; Yao, Caiping; Wang, Li; Ke, Jiajun

doi:10.1016/j.hydromet.2009.05.008

Cited by 58 publications

(24 citation statements)

References 29 publications

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“…The variations in percentage removal of nickel (II) on different initial pH (3)(4)(5)(6)(7)(8)(9)(10)(11) are demonstrated in Figure 2. The trend showed gradual increase in nickel (II) uptake from 27.1% to 68.9 %with the increase in pH from 3-7.…”

Section: Effect Of Phmentioning

confidence: 99%

“…Due to vast range of hazards associated with nickel pollution, a systematic study for its removal from wastewaters is of considerable significance. Technologies such as ion exchange, solvent extraction, reverse osmosis, precipitation and adsorption have been reported in the literature for the removal of nickel ions from aqueous solutions 8,9,10 . However, the most frequently applied method in industries for the waste water treatment is adsorption processes and in this regard, a number of adsorbents like peanut and almond husk [11][12] , baggase 13 , automobile tires 14 , gypsum 15 , soya cake 16 , blast furnace slag 17 and fly ash 18 have been studied for the removal of different heavy metals.…”

Section: Introductionmentioning

confidence: 99%

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Adsorption Studies of Pomegranate Peel Activated Charcoal for Nickel (Ii) Ion

Khawaja

Mubarak

Zia‐ur‐Rehman

et al. 2015

J. Chil. Chem. Soc.

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Presence of toxic heavy metals in air, soil, and water are growing threats to the environment. In this study, removal of divalent nickel from aqueous solutions has been investigated by utilizing a low cost pomegranate peel activated charcoal (PPAC) adsorbent. Adsorption capacity of the prepared charcoal at various parameters such as pH, contact time, metal ion concentration and adsorbent dose has been studied. Batch equilibrium experiments showed that maximum nickel adsorption takes place at neutral pH, while the maximum adsorption capacity for PPAC was 10.82 mg g −1. It was also found that percentage removal of nickel is directly proportional to the adsorbent dose with maximum adsorption at an adsorbent dose of 0.5g/50 ml for various concentrations (10-150 ppm) and contact time of 50 minutes. Experimental equilibrium data was verified for Langmuir and Freundlich isotherm models to establish the adsorbate-adsorbent interaction phenomena. The values of regression coefficient for Langmuir and Freundlich isotherm are found to be 0.942 and 0.931 respectively which showed that data fitted well in both models.

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Section: Effect Of Phmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Adsorption Studies of Pomegranate Peel Activated Charcoal for Nickel (Ii) Ion

Khawaja

Mubarak

Zia‐ur‐Rehman

et al. 2015

J. Chil. Chem. Soc.

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“…The cadmium concentrations in the aqueous phase were spectrophotometrically determined using 4-(2-pyridylazo) resorcinol (PAR) as a chromogenic reagent at pH 9.0 [34]. The absorbance of PAR-Cd(II) complex was measured at λ max = 496 nm.…”

Section: Liquid-liquid Extraction and Stripping Proceduresmentioning

confidence: 99%

Highly Efficient Extraction of Cadmium(II) in Nitrate Medium by Quarternary Ammoniums

Guezzen¹,

Didi²

2015

AJAC

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“…Las principales técnicas que han sido usadas para la reducción de concentraciones de metales pesados provenientes de residuos industriales son la precipitación química, intercambio iónico, filtración por membrana, métodos electrolíticos, ósmosis reversible y extracción con solventes (Xiong et al 2009). No obstante, estos métodos son económicamente inviables por los altos costos de operación.…”

Section: Introductionunclassified

Síntesis De Hidrogeles De Quitosano a Partir De Cáscara De Camarón Para Ensayos De Adsorción De Cobre

Sánchez-Duarte

Martinez‐Macias

Correa-Murrieta

et al. 2017

Rev. Int. Contam. Ambie.

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Palabras clave: aguas ácidas, metales pesados, bioadsorbente, remoción RESUMEN La minería representa una de las actividades económicas más importantes para muchos países y México no es la excepción. Sin embargo, los residuos líquidos que genera esta actividad suponen un riesgo para el ambiente debido a que se caracterizan por su elevado contenido de iones metálicos y valores bajos de pH. Actualmente, la adsorción en quitosano constituye una alternativa a los tratamientos convencionales para la recuperación de metales pesados en solución acuosa. En este estudio se obtuvieron hidrogeles de quitosano puro y modificado a partir del exoesqueleto de camarón para llevar a cabo ensayos de adsorción de cobre en solución ácida, con particular referencia a los efectos del tiempo de contacto, pH de la solución, masa del adsorbente y concentración inicial de cobre. Los resultados experimentales mostraron que las condiciones óptimas de adsorción de cobre fueron a pH 4, con 4.5 g de adsorbente (quitosano puro) y 4 h de tiempo de contacto, con estas condiciones se alcanzó una remoción del 99.35 %. Adicionalmente, se llevaron a cabo ensayos de adsorción con 160, 250 y 416 ppm de concentración de cobre en solución ácida y se observó que, a menor concentración mayor porcentaje de remoción, con hasta 92 % de remoción para la concentración de 160 ppm, así como 72 y 67.3 % para las concentraciones de 250 y 416 ppm, respectivamente. Lo anterior sugiere que el hidrogel de quitosano puro en forma de perlas, puede ser usado como adsorbente efectivo en la remoción de cobre presente en lixiviados de minas.Key words: acidic waters, heavy metals, biosorbent, removal ABSTRACTMining is one of the most important economic activities for many countries and Mexico is not the exception. However, liquid wastes generated by this activity pose a risk to the environment because they are characterized by its high content of metal ions and low pH values. Currently, the adsorption process in chitosan is an alternative to conventional treatments in the recovery of heavy metals from aqueous solutions. In this study we obtained both, pure and modified chitosan hydrogels from shrimp shell to carry out adsorption tests of copper in acid solution.

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Adsorption behavior of Cd(II) from aqueous solutions onto gel-type weak acid resin

Cited by 58 publications

References 29 publications

Adsorption Studies of Pomegranate Peel Activated Charcoal for Nickel (Ii) Ion

Adsorption Studies of Pomegranate Peel Activated Charcoal for Nickel (Ii) Ion

Highly Efficient Extraction of Cadmium(II) in Nitrate Medium by Quarternary Ammoniums

Síntesis De Hidrogeles De Quitosano a Partir De Cáscara De Camarón Para Ensayos De Adsorción De Cobre

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