Kinetic Analysis of the Adsorption of Malachite Green onto Graphene Oxide Sheets Integrated with Gold Nanoparticles

Abdussamad Abubakar,Bilal Ibrahim Dan-Iya,Ibrahim Alhaji Sabo,Salihu Yahuza

doi:10.54987/jobimb.v9i2.618

Abstract

Malachite green is extensively used in the textile dye industry and in agriculture as fish pests’ pesticide. Biosorption is a type of sorption technique that uses a biological sorbent. As of now, biosorption is viewed as a simple and cost-effective process that might be used as an alternative to traditional pollution treatment methods. Bioremediation is one of the branches of bioremediation that is used to minimise pollution in the context of incorrect textile waste disposal. The sorption isotherm of Malachite Green onto graphene oxide were analyzed using three models—pseudo-1st, pseudo-2nd and Elovich, and fitted using non-linear regression. The Elovich model was the poorest in fitting the curve based on visual observation and the best was pseudo-2nd order based on statistical analysis such as root-mean-square error (RMSE), adjusted coefficient of determination (adjR2), bias factor (BF), accuracy factor (AF), corrected AICc (Akaike Information Criterion), Bayesian Information Criterion (BIC) and Hannan–Quinn information criterion (HQC). Nonlinear regression analysis using the pseudo-2nd order model gave values of equilibrium sorption capacity qe of 6.164 mg/g (95% confidence interval from 5.918 to 6.410) and a value of the pseudo-2nd-order rate constant, k2 of 0.034 (95% confidence interval from 0.024 to 0.045). Further analysis is needed to provide proof for the chemisorption mechanism usually tied to this kinetic.

Highlights

Dry and wet techniques are used in the textile business to produce fibres
Statistical analysis based on root-mean-square error (RMSE), adjusted coefficient of determination, bias factor (BF), accuracy factor (AF), corrected AICc (Akaike Information Criterion), Bayesian Information Criterion (BIC) and Hannan–Quinn information criterion (HQC) that showed that the pseudo-2nd-order model was the best (Table 2) which was the same finding from the original published work
Further analysis is needed to provide proof for the mechanism usually tied to this kinetic

Summary

Introduction

Dry and wet techniques are used in the textile business to produce fibres. There are two main types of processing: dry and wet. The dry process encompasses sourcing, bleaching, dyeing, and finishing. Effluents from such phases are heavily polluted since they need a big volume of clean water. The dying process is critical to the efficient interchange of textiles. Product quality attributes such as high optical fixation are sought for by consumers both throughout the purchase process and after longterm use of a certain product. Choosing fibre colourants is a complex process since they need to be precise, color-consistent, fade-resistant, and cost-effective [1]

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