Cationic dialdehyde cellulose microfibers for efficient removal of eriochrome black T from aqueous solution

Author(s)

Gomes, Andressa Silva ; Leal, Maria Vitoria Guimaraes ; Tolosa, Gabrieli Roefero ; Cabrera, Flavio Camargo ; Dognani, Guilherme ; Job, Aldo Eloizo

• Document type: Journal article
• Source: Bioresource Technology; v. 380, p. 8-pg., 2023-04-28.

Abstract

Materials based on cellulose have been widely used as a decontaminant agent of wastewater. However, it can not be found in the literature any application of the cationic dialdehyde cellulose (cDAC) in anionic dye removal. Therefore, this study aims a circular economy concept using sugarcane bagasse to obtain a functionalized cel-lulose by oxidation and cationization. cDAC was characterized by SEM, FT-IR, oxidation degree, and DSC. Adsorption capacity was evaluated by pH, kinetic, concentration effect, strength ionic tests, and recycling. The kinetic followed Elovich model (R2 = 0.92605 for EBT = 100 mg/L) and non-linear Langmuir model (R2 = 0.94542), which resulted in a maximum adsorption capacity of 563.30 mg/g. The cellulose adsorbent reached an efficient recyclability of 4 cycles. Thus, this work presents a potential material to become a new, clean, low-cost, recyclable, and environmentally friendly alternative for effluent decontamination-containing dyes. (AU)

• FAPESP's process: 20/06577-1 - DEVELOPMENT OF HYBRID SYSTEMS OF CELLULOSE MICROFIBERS AND GOLD NANOPARTICLES FOR REMOVAL AND DETECTION (VIA SERS) OF EMERGING CONTAMINANTS IN AQUEOUS MEDIA
• Grantee: Guilherme Dognani
• Support Opportunities: Scholarships in Brazil - Post-Doctoral
• FAPESP's process: 21/09773-9 - Production of cationic cellulose microfibers (CMF) and its application on removal of congo red dye from wastewater
• Grantee: Maria Vitória Guimarães Leal
• Support Opportunities: Scholarships in Brazil - Scientific Initiation