International Journal of Applied Science and Engineering

Published by Chaoyang University of Technology

Darapureddi Krishna*, Gantala Santhosh Kumar and Dandu Radha Prasada Raju

Department of Chemical Engineering, MVGR College of Engineering,Vizianagaram, India


 

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ABSTRACT


Use of mixed adsorbent (Borasus Flabellifer coir powder and Ragi Husk powder) for the removal of chromium (VI) from waste water has been investigated in a batch mode process wherein influences of parameters like initial Cr (VI) concentration (20-60 mg/L), pH (1-3) and mixed adsorbent dosage (10-14 g/L) on Cr (VI) adsorption were tested by adopting both Box-Behnken Design (BBD) in response surface methodology and Feed Forward Artificial Neural Network (ANN). Optimum conditions for maximum removal of Cr (VI) from waste water of 20 mg/L have been analyzed by both the models, viz, mixed adsorbent dosage (12.3099 g/L in BBD and 12.1928 g/L in ANN), pH (1.6162 in BBD and 2.0912 in ANN) and initial Cr (VI) concentration (20.0261 mg/L in BBD and 20 mg/L in ANN). An ANN model was also developed in which 6 neurons were used in the hidden layer. The SEM and EDS photographs have indicated the surface morphology of mixed adsorbent and confirmation of metal ions adsorption.


Keywords: Box-behnken design (BBD); artificial neural network (ANN); mixed adsorbent, Cr (VI) removal and adsorption.


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ARTICLE INFORMATION


Received: 2018-05-09
Revised: 2019-09-30
Accepted: 2019-10-04
Publication Date: 2019-11-01


Cite this article:

Krishna, D., Kumar, G.S., Raju, D.R.P. 2019. Optimization of process parameters for the removal of chromium (VI) from waste water using mixed adsorbent.  International Journal of Applied Science and Engineering, 16, 187-200. https://doi.org/10.6703/IJASE.201911_16(3).187


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