Studies on adsorptive removal of Co(II), Cr(III) and Ni(II) by IRN77 cation-exchange resin

Selvaraj, Rengaraj; Yeon, Kyeong Ho; Kang, So Young; Lee, Jong Un; Kim, Kyung Woong; Moon, Seung‐Hyeon

doi:10.1016/s0304-3894(02)00018-3

Cited by 158 publications

(59 citation statements)

References 21 publications

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“…When the pH is further increased, the formation of a colloidal precipitate of Co(OH) 2 commences [16]. Therefore, a pH value of around 5.5 has been chosen in previous studies to carry out adsorption studies [17].…”

Section: Introductionmentioning

confidence: 99%

Removal of cobalt(II) from aqueous solution by local Saudi bentonite: Kinetic and equilibrium investigations

Al-Duaij

Attia

Khezami

et al. 2016

Maced. J. Chem. Chem. Eng.

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Natural bentonite clay from Saudi Arabia was used to remove cobalt from aqueous solution. The clay samples were first characterized for their chemical composition and structure. Batch sorption studies were then conducted to assess their capacity to remove cobalt. The effect of contact time, initial analyte concentration, bentonite dose and temperature on the adsorption was investigated. The results showed that equilibrium was attained in 60 minutes. The metal adsorption was fitted to a Langmuir isotherm model and the maximum monolayer adsorption capacity was found to be 19.85 mg g −1 at 333 K. The pseudosecond-order kinetic model provided the best correlation to the experimental data. The application of an intra-particle diffusion model revealed that the adsorption mechanism of the cobalt ions is a rather complex process and that diffusion is involved in the overall rate of the adsorption process, but it is not the only rate-controlling step. The activation energy, E a , ranged between 4.33 and 9.14 kJ mol −1 , indicating a physical adsorption process.Keywords: bentonite; cobalt; kinetics; equilibrium ОТСТРАНУВАЊЕ НА КОБАЛТ(II) ОД ВОДНИ РАСТВОРИ СО ЛОКАЛЕН САУДИСКИ БЕНТОНИТ: КИНЕТИЧКИ И РАМНОТЕЖНИ ИСТРАЖУВАЊАПриродната бентонитна глина од Саудиска Арабија беше употребена за отстранување на кобалт од водни растврори. Глинените примероци прво беа карактеризирани преку хемиска анализа и структура. Потоа беа спроведени сорпциски истражувања со цел да се процени нивниот капацитет за отстранување на кобалт. За атсорпцијата беа испитувани ефектот на времето на дејството, почетната концентрација на аналитот, бентонитната доза и температурата. Резултатите покажаа дека рамнотежата се постигнува за 60 минути. Атсорпцијата на металот беше усогласена со изотермен модел на Langmuir и беше определено дека максималниот монослоен капацитет изнесува 19,85 mg g −1 на 333 K. Најдобра корелација беше постигната со кинетички модел од псевдо-втор ред. Примената на дифузиски модел на интра-честички откри дека атсорпцискиот механизам на јоните на кобалт е доста сложен процес и дека вклучува дифузија во севкупната брзина на атсорпцискиот процес, но не е чекорот што ја контролира брзината. Активациската енергија, E a , се движи од 4,33 до 9,14 kJ mol −1 што укажува на физички атсорпционен процес.

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Section: Introductionmentioning

confidence: 99%

Removal of cobalt(II) from aqueous solution by local Saudi bentonite: Kinetic and equilibrium investigations

Al-Duaij

Attia

Khezami

et al. 2016

Maced. J. Chem. Chem. Eng.

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“…Adsorption with activated carbon is highly efficient for the removal of numerous trace elements from water, but the high cost inhibits its large-scale use as adsorbent [2][3][4][5] . Camellia oleifera abel shells (COAS) is a genus of Camellia family which is widely distributed in the southern China.…”

Section: Introductionmentioning

confidence: 99%

Removal of Cr ( ) from aqueous solution using Camellia oleifera abel shell-based activated carbon

You¹,

YaQing²,

Zheng³

et al. 2015

Proceedings of the 3rd International Conference on Advances in Energy and Environmental Science 2015

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“…Therefore, it is necessary to eliminate Cr (VI) from the environment in order to prevent the deleterious impact on ecosystem and public health. There are various treatment technologies available to remove the Cr (VI) from wastewater such as chemical precipitation [3], ion-exchange [4][5][6][7][8][9], membrane process as reverse osmosis, ultrafiltration and nanofiltration [10][11][12][13][14], flotation [15], electrocoagulation [16], solvent extraction [17], sedimentation [18], reduction [19], dialysis/electrodialysis [20], adsorption [21][22][23][24] and biosorption [25].…”

Section: Introductionmentioning

confidence: 99%

Optimization of Chromium (Vi) Removal by Donnan Dialysis

Marzouk¹,

Dammak²,

Chaabane³

et al. 2013

AJAC

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The removal of chromium (VI) from aqueous solutions by Donnan dialysis has been investigated in this paper. In this process, two anion-exchange membranes (AEMs) were used: Selemion ® AMV and Neosepta ® AFN. The amount of chromium (VI) removed was determined in terms of the following parameters: initial concentration of chromium (VI), type of anion-exchange membrane, concentration of counter-ion and magnetic stirring rate. A 24 full factorial design analysis was performed to screen the parameters affecting the Cr (VI) removal efficiency. Using the experimental results, a linear mathematical model representing the influence of the different parameters as well as their interactions was obtained. Analysis of the variance (ANOVA), the F-test and the student's test shows that the type of anion-exchange membrane is the most significant parameter affecting the chromium (VI) removal. The statistical analysis of the experimental data assumes it to be a normal distribution.

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Studies on adsorptive removal of Co(II), Cr(III) and Ni(II) by IRN77 cation-exchange resin

Cited by 158 publications

References 21 publications

Removal of cobalt(II) from aqueous solution by local Saudi bentonite: Kinetic and equilibrium investigations

Removal of cobalt(II) from aqueous solution by local Saudi bentonite: Kinetic and equilibrium investigations

Removal of Cr ( ) from aqueous solution using Camellia oleifera abel shell-based activated carbon

Optimization of Chromium (Vi) Removal by Donnan Dialysis

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