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Published yearly: 

4 Issues


ISSN: 2320-964X (Online) 

ISSN: 2320-7817  (Print)



Dr. Santosh Pawar 




Int. Journal of Life Sciences, 2016; 4(1):44-56 |  Available online, April 11, 2016

An evaluation of comparative biosorption study of Cadmium (II) and Chromium (VI) using Orange rind (Citrus sinensis), (L.) Osbeck, under optimized conditions


Poojari Anukthi C1, Maind Sandip D2 and  Bhalerao Satish A1 

1Environmental Sciences Research Laboratory, Department of Botany, Wilson College, Mumbai-400007,

2Department of Chemistry, Bharatiya Vidya Bhavan’s Hazarimal Somani College of Arts and Science,

  Kulapati K.M. Munshi Marg, Chowpatty, Mumbai-400007, Maharashtra, India

*Corresponding Author Email :    |  

Received: 15.02.2016   |   Revised : 24.03.2016   |   Accepted: 26.03.2016   |   Published : 11.04.2016

The present study investigated the comparative biosorption study of cadmium (II) and chromium (VI) using inexpensive biosorbentrind of orange (Citrus sinensis), (L.) Osbeck, under optimized conditions. A biosorption study was carried out in batch system from aqueous solutions. The biosorbent before and after biosorption was characterized by FTIR and SEM. The work considered the optimization of parameters such as solution pH, biosorbent dose, initial metal concentration, contact time and temperature. To assess the potential applicability of biosorbent, the experimental equilibrium data were analysed by Langmuir, Freundlich, Dubinin-Kaganer-Redushkevich (DKR) and Temkin isotherms. Langmuir isotherm model provided a better fit with the experimental data for both cadmium (II) and chromium (VI). The maximum biosorption capacity of cadmium (II) and chromium (VI) which was determined from Langmuir isotherm was found to be 83.33mgg-1and 10.74mg g-1respectively. Simple kinetic models such as pseudo-first-order, pseudo-second-order, Elovich and Weber & Morris intraparticle rate diffusion, were employed to determine the biosorption mechanism.  A result clearly indicates that the pseudo-second-order kinetic model was found to be correlating the experimental data strongest for both cadmium (II) and chromium (VI), which suggests that chemical adsorption process was more dominant. Thermodynamic study revealed that the biosorption process was spontaneous, endothermic and increasing randomness of the solid solution interfaces. The rind of orange (Citrus sinensis), (L.) Osbeck was found to remove cadmium (II) and chromium (VI) effective from aqueous solutions with uptake and selectivity in the order of cadmium (II) > chromium (VI).Thus biosorption have an advantages over other expensive cleanup technologies, can be used for waste water treatment for remediation of heavy metal contamination in industrial sectors.


Keywords: Comparative study, Biosorption, Cadmium (II), Chromium(VI), Orange (Citrus sinensis), (L.) Osbeck, FTIR, SEM, Adsorption isotherms, Adsorption kinetics, Thermodynamic study.


Editor: Dr. Arvind Chavhan


Cite this article as:

Poojari Anukthi C, Maind Sandip D and  Bhalerao Satish A (2016) An evaluation of comparative biosorption study of cadmium (II) and chromium (VI) using orange rind (Citrus sinensis), (L.) Osbeck,under optimized conditions. International J. of Life Sciences, 4(1): 44-56.



The authors are thankful to Principal Dr. V. J. Sirwaiya for their administra- tive support, cooperation and help. Thanks to Viva College for FTIR analysis and IIT, Mumbai for SEM analysis.


Copyright: © 2016 | Author(s), This is an open access article under the terms of the Creative Commons Attribution-Non-Commercial - No Derivs License, which permits use and distribution in any medium, provided the original work is properly cited, the use is non-commercial and no modifications or adaptations are made.







    Origin & Evolution

    Print ISSN : 2320-7817 

    Online ISSN:2320-964X

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