The use of indigenous coal reserves for the removal of lead(II) from the aquatic environment by adsorption

Bhutto, Sadaf; Khan, Muhammad Aqeel

doi:10.1080/00207233.2012.728316

Cited by 2 publications

(1 citation statement)

References 25 publications

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“…However, upon acid activation these adsorbents proved to be selective for lead removal with a negligible removal capacity for copper. 11,12 Therefore, various modi¯cations were applied to make the adsorbents chie°y selective for copper(II) removal from industrial e®luents.…”

Section: Introductionmentioning

confidence: 99%

Surface Alteration of Activated Carbon for Detoxification of Copper (Ii) From Industrial Effluents

Bhutto

Khan

2013

Surf. Rev. Lett.

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The low-cost modi¯ed activated carbons were prepared from Thar and Lakhra (Pakistan) coals by activation with sulfuric acid and further modi¯ed with citric, tartaric and acetic acids for the selective adsorption of Cu(II) from aqueous solution. The original carbon obtained from activated Thar and Lakhra coals at pH 3.0 displayed signi¯cant adsorption capacity for lead and insigni¯cant capacity values (0.880 and 0.830 mgÁg À1 ) for copper. However, after modi¯cation with citric, tartaric and acetic acid the copper adsorption capacities enhanced in the range of 5.56À21.85 and 6.05À44.61 times, respectively. The Langmuir, Freundlich and Temkin adsorption isotherms were used to elucidate the observed sorption phenomena. The isotherm equilibrium data was well¯tted by the Langmuir and su±ciently¯tted to the Freundlich models. The calculated thermodynamic parameters such as change in Gibbs free energy (ÁG ), enthalpy (ÁH ) and entropy (ÁS ) inferred that the investigated adsorption was spontaneous and endothermic in nature. Based on the results, it was concluded that the surface alteration with citric and tartaric acid, Thar and Lakhra activated carbons had signi¯cant potential for selective removal of copper(II) from industrial wastewater.

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Section: Introductionmentioning

confidence: 99%

Surface Alteration of Activated Carbon for Detoxification of Copper (Ii) From Industrial Effluents

Bhutto

Khan

2013

Surf. Rev. Lett.

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Investigation of Pb(II) adsorption on a novel activated carbon prepared from hazelnut husk by K₂CO₃activation

İmamoğlu

Şahin

Aydın

et al. 2015

Desalination and Water Treatment

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The use of indigenous coal reserves for the removal of lead(II) from the aquatic environment by adsorption

Cited by 2 publications

References 25 publications

Surface Alteration of Activated Carbon for Detoxification of Copper (Ii) From Industrial Effluents

Surface Alteration of Activated Carbon for Detoxification of Copper (Ii) From Industrial Effluents

Investigation of Pb(II) adsorption on a novel activated carbon prepared from hazelnut husk by K₂CO₃activation

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The use of indigenous coal reserves for the removal of lead(II) from the aquatic environment by adsorption

Cited by 2 publications

References 25 publications

Surface Alteration of Activated Carbon for Detoxification of Copper (Ii) From Industrial Effluents

Surface Alteration of Activated Carbon for Detoxification of Copper (Ii) From Industrial Effluents

Investigation of Pb(II) adsorption on a novel activated carbon prepared from hazelnut husk by K2CO3activation

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Investigation of Pb(II) adsorption on a novel activated carbon prepared from hazelnut husk by K₂CO₃activation