Novel immobilized ternary photocatalytic polymer film based airlift reactor for efficient degradation of complex phthalocyanine dye wastewater.

Clicks: 347
ID: 51599
2019
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Abstract
Reduced graphene oxide (rGO) as well as graphitic carbon nitride (g-CN) catalysts were synthesized and a physical admixture of rGO and g-CN along with TiO in the ratio of 1:1:1 by weight was immobilized in a polystyrene film using the facile solvent casting method. An internal loop airlift reactor with a working volume of 1.2 litres incorporating the prepared polymer-based photocatalytic film was designed and tested for the photocatalytic degradation of remazol turquoise blue dye synthetic wastewater. The reactor parameters affecting the photocatalytic activity such as airflow rate and D/D (ratio of draft tube diameter to outer tube diameter) were evaluated. The successful operation of the reactor obtained using the ternary immobilized catalyst mixture film gave 92.25% total organic carbon reduction and 94% decolourization within 140 min, compared to 91% decolourization by the slurry form within 40 min. Complete and quicker decolourization of the dye was also demonstrated under the influence of O or HO. The immobilized catalyst was successfully reused four times. The ternary catalyst admixture employed in this work and the unique design of the photocatalytic reactor helps to increase the degradation rate of toxic textile effluents thus making it suitable for larger scales of treatment.
Reference Key
das2019noveljournal Use this key to autocite in the manuscript while using SciMatic Manuscript Manager or Thesis Manager
Authors Das, Suman;Mahalingam, Hari;
Journal Journal of hazardous materials
Year 2019
DOI
S0304-3894(19)31173-2
URL
Keywords
immobilization synergistic effect photocatalyst admixture polystyrene remazol turquois blue

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