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

Autor(es)

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

• Tipo de documento: Artigo Científico
• Fonte: Bioresource Technology; v. 380, p. 8-pg., 2023-04-28.

Resumo

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)

• Processo FAPESP: 20/06577-1 - Desenvolvimento de sistemas híbridos contendo microfibras de celulose e nanopartículas de ouro visando a remoção e a detecção (via sers) de contaminantes emergentes em meio aquoso
• Beneficiário: Guilherme Dognani
• Modalidade de apoio: Bolsas no Brasil - Pós-Doutorado
• Processo FAPESP: 21/09773-9 - Produção de microfibras de celulose catiônica (CMF) e sua aplicação na remoção do corante vermelho do congo de efluentes
• Beneficiário: Maria Vitória Guimarães Leal
• Modalidade de apoio: Bolsas no Brasil - Iniciação Científica