Low-cost agroindustrial biomasses and ferromagnetic bionanocomposites to cleanup textile effluents

Author(s)

Labuto, Georgia ^[1] ; Cardona, Debora Selene ^[1] ; Debs, Karina Bugan ^[1] ; Imamura, Augusto Ribeiro ^[1] ; Hipolito Bezerra, Katia Crystina ^[2] ; Vasconcelos Martins Carrilho, Elma Neide ^[3] ; Haddad, Paula Silvia ^[1]

Affiliation

^[1] Univ Fed Sao Paulo, Dept Quim, BR-09913030 Sao Paulo - Brazil

^[2] Fac Tecnol SENAI Antonio Skaf, Rua Correia Andrade St, BR-03008020 Sao Paulo - Brazil

^[3] Univ Fed Sao Carlos, Dept Ciencias Nat Matemat & Educ, BR-13600970 Sao Paulo - Brazil

• Document type: Journal article
• Source: Desalination and Water Treatment; v. 112, p. 80-89, APR 2018.
• Web of Science Citations: 4

Abstract

The presence of textile dyes in the environment is a concern since they can be composed of organic and inorganic recalcitrant and/or toxic compounds. Ferromagnetic nanocomposites prepared from agroindustry residues, cork powder (CP), and yeast biomass (YB) were synthetized, characterized, and applied for dyes adsorption. The CP, YB, ferromagnetic nanoparticles (MNP), the ferromagnetic nanocomposites powdered cork (CP-MNP), and yeast biomass from ethanol industry (YB-MNP) were evaluated as sorbents for methylene blue. All sorbents were also applied to cleanup dyed cotton fabric effluent, containing a reactive dye trichomy (Yellow CL-2R, Red CL-5B, and Blue HF-RL, all Drimaren). The experimental sorption capacities (SCexp) of the sorbents for methylene blue with the respective confidence intervals (1 - alpha = 0.95) were 36.4 +/- 0.5 mg/g (CP), 33.6 +/- 0.9 mg/g (CP-MNP), 27.7 +/- 0.2 mg/g (YB), 30.4 +/- 1.2 mg/g (YB-MNP), and 2.9 +/- 0.5 mg/g (MNP). A proposed decision algorithm was employed to define the isotherms model best fit to each process, and we found CP-MNP (Langmuir), CP (Langmuir), YB-MNP (SIPS), YB (SIPS), and MNP (Freundlich). High sorption efficiency reached up recoveries of 50.0% +/- 1.2% (CP), 66.5% +/- 0.1% (CP-MNP), 85.9% +/- 0.1% (YB), and 82.6% +/- 0.1% (YB-MNP) of dye effluents, suggesting that the materials present potential for treatment effluents. (AU)

• FAPESP's process: 16/06271-4 - Development of adsorbents from yeast biomass residue from industrial fermentation processes to remove emerging contaminants from water and effluents
• Grantee: Geórgia Christina Labuto Araújo
• Support Opportunities: Regular Research Grants