Volume No. 7 Issue No.: 2A Page No.: 843-850 Oct. - Dec. 2012

 

FIXED BED COLUMN STUDIES FOR THE SORPTION OF PARA-NITROPHENOL FROM AQUEOUS SOLUTIONS USING CROSS-LINKED STARCH BASED POLYMER

 

Garg Sangeeta*, Kohli Deepak1 and Jana A. K.2

1.Department of Chemical Engineering, National Institute of Technology, Jalandhar, Punjab (INDIA)
2.Department of Biotechnology, National Institute of Technology, Jalandhar, Punjab (INDIA)

 

Received on : September 08, 2012

 

ABSTRACT

 

In this work, fixed bed column experiments were carried out to investigate the adsorption characteristics of para-nitrophenol (pNP) by cross-linked starch based polymers using hexamethylene diisocynate (HMDI) as a cross-linking agent. The native and cross-linked starch polymer was characterized using Fourier Transform Infrared Spectroscopy (FT-IR). Effect of design parameters, such as influent concentration, bed height and flow rate on the breakthrough characteristics of the adsorption system were determined. The column experiments on cross-linked starch showed that the adsorption efficiency increased with increase in the influent concentration, bed height and decreased with increasing flow rate. Yoon-Nelson model was used to analyse the column performance and it was observed that the experimental data was well fitted with Yoon-Nelson model.

 

Keywords : Fixed bed column, Adsorption, Cross-linked starch, Breakthrough curves, Yoon-Nelson model

 

 

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