Application of Biochar for the Treatment of Textile Dyes and Wastewater

Vyavahare, Govind; Sutar, Shubham; Gurav, Ranjit; Patil, Ravishankar; Patil, Devashree N.; Jadhav, Jyoti P.

doi:10.1007/978-981-16-4059-9_8

Cited by 2 publications

(1 citation statement)

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“…Dyes can be degraded photochemically, photocatalytically, or by using nanoparticles, enzymes, or bacteria . For instance, ethyl violet dye, which is widely utilized in many industries, can be removed from the environment by biological treatment, adsorption, incineration, foam flotation, and/or photodegradation. , Modern electrochemical and spectroscopic techniques are more widely used for dyes monitering …”

Section: Introductionmentioning

confidence: 99%

Electrochemical Sensor for Detection and Degradation Studies of Ethyl Violet Dye

et al. 2022

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In this work, a simple and sensitive electrochemical method was developed to determine ethyl violet (EV) dye in aqueous systems by using square wave anodic stripping voltammetry (SWASV) employing a glassy carbon electrode modified with acidic-functionalized carbon nanotubes (COOH- f CNTs). In square wave anodic stripping voltammetry, EV exhibited a well-defined oxidation peak at 0.86 V at the modified GCE. Impedance spectroscopy and cyclic voltammetry were used to examine the charge transduction and sensing capabilities of the modified electrode. The influence of pH, deposition potential, and accumulation time on the electro-oxidation of EV was optimized. Under the optimum experimental conditions, the limit of detection with a value of 0.36 nM demonstrates high sensitivity of COOH- f CNTs/GCE for EV. After detection, it was envisioned to devise a method for the efficient removal of EV from an aqueous system. In this regard a photocatalytic degradation method of EV using Ho/TiO 2 nanoparticles was developed. The Ho/TiO 2 nanoparticles synthesized by the sol–gel method were characterized by UV–vis, XRD, FTIR, SEM, and EDX. The photocatalytic degradation studies revealed that basic medium is more suitable for a higher degradation rate of EV than acidic and neutral media. The photodegradation kinetic parameters were evaluated using UV–vis spectroscopic and electrochemical methods. The results revealed that the degradation process of EV follows first-order kinetics.

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