APPLICATION OF CELLULOSE/TiO2 MATERIALS SYNTHESIZED FROM BANANA WASTE FOR ANALYZING MALACHITE GREEN IN WATER AND SHRIMP SAMPLES

Abstract

The Cellulose/TiO₂ material was synthesized from banana peels, and its properties were characterized using SEM, FTIR, XRD methods. The material was applied for adsorption to enrich Malachite Green under solid-phase extraction conditions such as pH, material mass, adsorption time, and desorption solvent, respectively investigated to achieve the highest adsorption and desorption efficiency. The results showed that using 100 mg of adsorbent material for 60 minutes at pH 7 resulted in an adsorption efficiency of 94.64% with a maximum adsorption capacity of about 79.42 mg/g of material. Ethanol/HCl 1M (8:2) was the desorption solvent for Malachite Green with a desorption efficiency of 100% at an initial concentration of 100 mg/L. Under optimal conditions, Malachite Green was determined by UV-VIS spectrophotometry in the linear range of 0.1 ÷ 20.0 mg/L (r² = 0.9977) with detection and quantification limits of 0.023 mg/L and 0.068 mg/L, respectively; the recovery efficiency of the method was about (96.28 ± 1.58) %. The method was applied to determine Malachite Green in shrimp aquaculture water and shrimp samples.