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Journal of Environmental Biology

pISSN: 0254-8704 ; eISSN: 2394-0379 ; CODEN: JEBIDP

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    Abstract - Issue Jul 2015, 36 (4)                                     Back


nstantaneous and historical temperature effects on a-pinene

Studies on characterization and removal of methylene blue

with Delonix regia plant litters activated carbon

encapsulated nano metal oxide

 

S. Daniel1, P.S. Syed Shabudeen1* and A. Basker2

1Kumaraguru College of Technology, Coimbatore-641 006, India

2Kalaignar Instiute of Technology, Coimbatore-641 402, India

*Corresponding Author?s Email : shabu_cbe@yahoo.com

 

 

 

Publication Data

Paper received:

27 10 2013

 

Revised received:

07 June 2014

 

Re-revised received:

02 September 14

 

Accepted:

30 October 14

 

Abstract

An advanced adsorbent material prepared by encapsulating nano-metaloxide on an activated carbon of Delonix regia plant litters was tested for its efficiency and superiority as an improved, advanced activated carbon material. It was subjected to modern instrumental techniques to evolve its morphology and its structure by FTIR, SEM, TEM, XRD, EDAX and BET studies. The size of MgO particles was in the range of 20nm-25 nm. The surface area of nano composite was 632 m2 g-1. Experimental results, based on batch mode of experiments, indicated that the adsorbent could remove 90% dye for the adsorbent dosage of 100 mg, at pH 7.0 and contact time of 120 min. The adsorption equilibrium data were well correlated for both, Langmuir and Freundlich isotherms. The monolayer adsorption capacity Qo was found to be 14.425 mg g-1 for the composite. The kinetic adsorption data fitted the pseudo first order modeled by Lagergren and also intra particle diffusion. Removal efficiency of the composite adsorbent was higher than the uncoated adsorbents. Regeneration of exhausted adsorbent showed considerable improved variation in comparison to normal activated carbon materials.     

 

 

 Key words

 

Delonix regia, Nano metal oxide composite, Scanning Electron Microscopy, X-Ray Diffraction 

 

 

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