Current World Environment

Photocatalytic Degradation of Bismarck Brown Y Azo Dye by using an Immobilised Photocatalyst and their Reusability

Chhatar Pal , Shanker Lal Meena ^* and Ashutosh Sharma

¹ Department of Chemistry, Jai Narain Vyas University, Jodhpur, Rajasthan India

Corresponding author Email: slmeena.jnvu@gmail.com

DOI: http://dx.doi.org/10.12944/CWE.20.3.23

Abstract

The elimination of organic pollutants, particularly azo dyes, is of critical concern due to their toxicity, chemical stability, and mutagenic effects on living systems. In this work, the photocatalytic degradation of Bismarck Brown Y, a representative azo dye, was investigated using Amberchrom 1×2 in its chloride form, immobilized as a photocatalyst with a mesh size of 100–200, which also functions as an adsorbent. The fine mesh size provides a higher surface area, facilitating both dye adsorption and enhanced interaction with incident light, thereby improving photocatalytic activity. The degradation efficiency was systematically evaluated as a function of pH, initial dye concentration, catalyst dosage, and UV light intensity. Among the tested conditions, the highest degradation performance was obtained at 30 °C, neutral pH (7), a photocatalyst loading of 0.40 g, and an irradiation intensity of 10.5 mW cm-². Under these optimized parameters, complete degradation of the dye was achieved within 35 minutes with a degradation efficiency of 99.5%, confirming the efficiency of immobilized Amberchrom 1×2 as a potential photocatalyst for the treatment of azo dye pollutants in wastewater. The apparent rate constant (kapp) for the photocatalytic degradation under these conditions was calculated as 1.53×10-1min-1 (t1/2 = 4.53 min), indicating a significant degradation rate consistent with the observed efficiency.

Keywords

Bismarck Brown Y azo dye; Immobilisation; Photocatalytic degradation; Photosensitizer; Reusability

Copy the following to cite this article:

Pal C, Meena S. L, Sharma A. Photocatalytic Degradation of Bismarck Brown Y Azo Dye by using an Immobilised Photocatalyst and their Reusability. DOI:http://dx.doi.org/10.12944/CWE.20.3.23

Copy the following to cite this URL:

Pal C, Meena S. L, Sharma A. Photocatalytic Degradation of Bismarck Brown Y Azo Dye by using an Immobilised Photocatalyst and their Reusability.

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