Adsorption Kinetics and Intraparticulate Diffusivities of Congo Red onto Kola Nut Pod Carbon

被引：0

作者：

Ayanda, Olushola Sunday ^{[1
]}

Adeyi, Oladayo ^{[2
]}

Durojaiye, Bolanle ^{[3
]}

Olafisoye, Oladunni ^{[3
]}

机构：

[1] Cape Peninsula Univ Technol, Fac Sci Appl, Dept Chem, Bellville, South Africa

[2] Cape Peninsula Univ Technol, Fac Engn, Dept Chem Engn, Bellville, South Africa

[3] Bowen Univ, Dept Chem, Iwo, Osun State, Nigeria

来源：

POLISH JOURNAL OF ENVIRONMENTAL STUDIES | 2012年 / 21卷 / 05期

关键词：

congo red; kola nut pod; carbon; adsorption kinetics; intraparticulate diffusivities; AQUEOUS-SOLUTIONS; ACTIVATED CARBON; REMOVAL; SORPTION; IONS; DYE; WATER;

D O I：

暂无

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

In this present study, the adsorption kinetics and intraparticulate diffusivities of congo red onto unmodified and modified kola nut pod carbons were studied. Two kinetic models, the pseudo first- and second-order equations, were selected to follow the adsorption process. Kinetic parameters, rate constants, equilibrium adsorption capacities, and correlation coefficients for each kinetic equations were calculated and discussed. Experimental results showed that the amount of congo red adsorbed by all the adsorbents increased with increasing contact time with NH4Cl modified kola nut pod carbon having the highest adsorption capacity as compared to the unmodified, heat- and HNO3-modified kola nut pod carbon. Results obtained also indicated that the adsorption of congo red onto kola nut pod carbons is pseudo first-order and the mechanism is particle-diffusion controlled.

引用

页码：1147 / 1152

页数：6

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