Electrochemical Colour Removal of Azo Dyes Using Boron-Doped Diamond Electrodes and Silver Nanoparticles as Electrocatalyst

• DOI: 10.37284/ijar.7.1.2218
• Publication Date: 2024-09-20T08:28:11Z
• Authors: Martin Ouma Osemba; Loice Ojwang; Justin Maghanga

Azo dyes are carcinogenic and if taken would lead to debilitating adverse health effects in animals, man aquatic organisms. In this study, novel Boron Doped Diamond (BDD) electrodes coated with silver nanoparticles were applied. Iron (11) sulphate was used as a supporting electrolyte electrocatalyst enhance the degradation efficiency. Degradation efficiency monitored by UV-VIS spectrometry while some of physico-chemical parameters determined standard methods for examination water wastewater outlined APHA (2000). The absorption spectra four their λ max ranged between 470 590 nm spectrum. Colour removal 100% achieved at end electrochemical degradation. colour levels treated textile found be BDL. final compared National Environmental Management Authority (NEMA) World Health Organization (WHO) effluent discharge standards possibility re-use or direct natural course. From study findings, it is evident that concentration considered efficient 10 ppm since there less power consumption thus economical. An increased from 0.1 0.5 g/l FeSO4 added act quick dye. As 0 8 lowest 0.4536 watts within group mean value 0.03±0.0023 time (hours) 0.63±0.0001 current (amperes) recorded. Therefore, concluded greater AgNPs acted effectively eliminate barrier during dye process. all experiments using different kinds dyes, worth noting an increase inter-electrode distance 2mm mm led decrease production 1.23±0.0140 A - 0.58±0.0048 which resulted lot 0.025±0.0012 hr -0.723±0.0047 hr. aspect temperature also under above optimal conditions, 45ºC faster chemical kinetics particles reaction system. pH 4.0 7.0, (0.21±0.0005-0.24±0.0014 A). group, analyzed range 6.5±¬0.5 noted better studied azo effluent. removed below detectable (BDL) could not detected human eye after treatment