Efficacy of biomaterial based photocatalytic composite in treating dye pollutants

Authors

  • MM Rahman Department of Applied Chemistry and Chemical Engineering, University of Dhaka, Dhaka-1000
  • S Ahmed Institute of Glass and Ceramic Research & Testing (IGCRT), Bangladesh Council of Scientific and Industrial Research (BCSIR), Dhaka-1205
  • Z Yeasmin Institute of Glass and Ceramic Research & Testing (IGCRT), Bangladesh Council of Scientific and Industrial Research (BCSIR), Dhaka-1205
  • SM Masum Department of Applied Chemistry and Chemical Engineering, University of Dhaka, Dhaka-1000

DOI:

https://doi.org/10.3329/bjsir.v53i2.36675

Keywords:

Dye, Hydroxyapatite (HAp), Photocatalyst, Illumination, Composite

Abstract

A biomaterial based photocatalytic composite, hydroxyapatite–TiO2–ZnO (HAp-TiO2–ZnO) has been developed following a solid-state combustion method while its efficacy was investigated through the photodegradation of (i) aquatic solution of synthetic dye, methylene blue (MB); and (ii) real textile dye effluent. The degradation profile was explored considering several factors, e.g.: (i) initial dye concentration; (ii) illumination span; (iii) dose of photocatalyst; and (iv) pH of targeted dye solution. The photodegradation was performed in both indoor and outdoor environment using halogen lamp (500 W) and sunlight respectively. Observed photodegradation revealed that though the photocatalytic composite effectively decomposed methylene blue at various extents under different experimental conditions but a dose of 0.5g photocatalyst/100 mL substrate solution (10×10-6 M methylene blue solution at pH 4) expedited optimal degradation (~ 97%) at 2 hours’ time interval. On the other hand though it was possible to degrade the textile effluent to some extent by illuminating through halogen lamp and sunlight but the success rate did not exceed 50%.

Bangladesh J. Sci. Ind. Res.53(2), 139-144, 2018

Downloads

Download data is not yet available.
Abstract
825
PDF
828

Author Biography

MM Rahman, Department of Applied Chemistry and Chemical Engineering, University of Dhaka, Dhaka-1000



Downloads

Published

2018-05-27

How to Cite

Rahman, M., Ahmed, S., Yeasmin, Z., & Masum, S. (2018). Efficacy of biomaterial based photocatalytic composite in treating dye pollutants. Bangladesh Journal of Scientific and Industrial Research, 53(2), 139–144. https://doi.org/10.3329/bjsir.v53i2.36675

Issue

Section

Articles