Application of seed residues from Anadenanthera macrocarpa and Cedrela fissilis as alternative adsorbents for remarkable
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RESEARCH ARTICLE
Application of seed residues from Anadenanthera macrocarpa and Cedrela fissilis as alternative adsorbents for remarkable removal of methylene blue dye in aqueous solutions Yamil L. O. de Salomón 1 & Jordana Georgin 1 & Dison S. P. Franco 2 & Matias Schadeck Netto 2 & Edson Luiz Foletto 2 & Daniel Allasia 1 & Guilherme Luiz Dotto 2 Received: 16 June 2020 / Accepted: 25 August 2020 # Springer-Verlag GmbH Germany, part of Springer Nature 2020
Abstract Two novel ecological and low-cost adsorbents were prepared from seed residues of the tree species Anadenanthera macrocarpa and Cedrela fissilis for the removal of methylene blue dye in water. The materials were comminuted and characterized by different techniques. The particles of samples have a rough surface with cavities. The optimum dosage and pH for both materials were 1 g L−1 and pH 8. The pseudo-second-order model was the most suitable for describing the adsorption kinetics for both systems. The Anadenanthera macrocarpa presented a maximum experimental capacity of 228 mg g−1, while the Cedrela fissilis, a similar capacity of 230 mg g−1 at 328 K. The Tóth model was proper for describing the equilibrium curves for both systems. The thermodynamic indicators show that the adsorption process is spontaneous and endothermic for both materials. The application of materials for the simulated effluent treatment showed 74 and 78% of color removal using Anadenanthera macrocarpa and Cedrela fissilis samples, respectively. Overall, seed residues of Anadenanthera macrocarpa and Cedrela fissilis could be potentially applied for adsorptive removal of colored contaminants in wastewater. Keywords Adsorption . Seed residue . Anadenanthera macrocarpa . Cedrela fissilis . Methylene blue
Introduction The dyes are often used in the textile, leather, cosmetic, plastic, pharmaceuticals, and food process industries (Garg et al. 2004). The discharges from these industries carry a series of intermediate dyes, which generate large volumes of effluents with different degrees of toxicity (Bhatti et al. 2020). In this way, the colored pollutants are becoming common at hydric bodies, and thus a major preoccupation with the ecosystems Responsible Editor: Tito Roberto Cadaval Jr Electronic supplementary material The online version of this article (https://doi.org/10.1007/s11356-020-10635-0) contains supplementary material, which is available to authorized users. * Guilherme Luiz Dotto [email protected] 1
Sanitary and Environmental Engineering Department, Federal University of Santa Maria, Santa Maria 97105-900, Brazil
2
Chemical Engineering Department, Federal University of Santa Maria-UFSM, Roraima Avenue 1000, Santa Maria, RS 97105-900, Brazil
(Baig et al. 2019; Wekoye et al. 2020). The methylene blue is the most common dye for its category, which is used in the dyeing process of the cotton and silk (Hameed et al. 2007). In addition to the environmental problems, the strident exposition to the MB causes several health injuries (Vadivelan and Kumar 2005). Several t
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