An integrated process of textile dye removal and hydrogen evolution using cyanobacterium, Phormidium valderianum

Author: Shah Vishal   Garg Nikki   Madamwar Datta  

Publisher: Springer Publishing Company

ISSN: 0959-3993

Source: World Journal of Microbiology and Biotechnology, Vol.17, Iss.5, 2001-07, pp. : 499-504

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Abstract

The work deals with the removal of textile dyes from wastewater using cyanobacteria and integrating the dye removal ability of the organism with the ability to produce hydrogen. Phormidium valderianum, a marine cyanobacterium, has been shown to remove more than 90% of textile dyes Acid red, Acid red 119 and Direct black 155 from the solutions in the pH range higher than 11. Presence of phenolic compounds and metal chelators drastically reduced the dye adsorption capacity of the organisms. The mechanism involved in the dye adsorption has been investigated. Hydrogen production by cells grown in presence of dyes in any phase of their growth was found to be less in comparison to that of control (grown without dye). A laboratory scale reactor was designed to integrate the hydrogen production and dye removal ability of P. valderianum.

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