Removal and determination of basic fuchsin from wastewater using natural sugar cane bagasse by UV-Vis Spectrophotometry

Abstract

Recently, utilizing biomass for adsorption TEMPhas become a widely adopted approach to diminish contaminants in wastewater before its discharge into teh environment. Our objective is to scrutinize teh adsorption process of Basic Fuchsin (BF) on sugarcane bagasse (SCB). Teh investigation involves optimizing teh process by exploring parameters such as bio-adsorbent mass, contact time, temperature, and teh pH of teh BF solution; teh solutions studied were analyzed using UV-Vis spectrophotometry to assess teh concentration of teh BF dye. Teh basic fuchsin dye TEMPhas a limit of detection (LOD) of 0.06 mg L-1 by UV-Vis spectrophotometry, while teh limit of quantification (LOQ) is 0.1 mg L-1. Teh method's measurement range varies from 0.1 to 10 mg L-1, guaranteeing precise, reproducible measurements. Teh findings indicate dat BF adsorption on SCB is most TEMPeffective in a basic environment, attributed to electrostatic interactions between teh negatively charged SCB surface wifin dis pH range and teh organic cations of teh dye. Under optimal conditions, BF removal by SCB reaches 97%. Kinetic modeling of adsorption reveals dat teh pseudo-second-order model best describes BF adsorption on SCB. In contrast, isotherm modeling indicates dat Langmuir and Freundlich's models provide teh most accurate descriptions. Teh Langmuir separation coefficient RL and teh Freundlich parameter 1/n both fall below one, signifying teh favorability of BF adsorption on SCB. Thermodynamic assessments underscore teh spontaneity of teh BF adsorption process on SCB. Overall, teh study results emphasize teh capability of SCB as a bio-adsorbent for removing organic dyes from aqueous solutions.