Sugarcane bagasse and straw as low-cost lignocellulosic sorbents for the removal of dyes and metal ions from water
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ORIGINAL RESEARCH
Sugarcane bagasse and straw as low-cost lignocellulosic sorbents for the removal of dyes and metal ions from water Vita Halysh . Olena Sevastyanova . Stanislaw Pikus . Galina Dobele Bogdan Pasalskiy . Volodymyr M. Gun’ko . Mykola Kartel
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Received: 29 December 2019 / Accepted: 6 July 2020 Ó Springer Nature B.V. 2020
Abstract Sugarcane bagasse (stalk) and straw (leaves), an agricultural waste, which had been subjected to either an organosolv or organosolvoxidative pretreatment were used for the removal of methylene blue dye or heavy metals (Fe(III) and Cu(II)) from model aqueous solutions. The sorption of methylene blue was investigated as a function of pH, dye concentration, and contact time. The sorption of metal ions was studied as a function of concentration. Classical Langmuir and Freundlich adsorption models Electronic supplementary material The online version of this article (https://doi.org/10.1007/s10570-020-03339-8) contains supplementary material, which is available to authorized users. V. Halysh (&) Department of Ecology and Technology of Plant Polymers, Faculty of Chemical Engineering, Igor Sikorsky Kyiv Polytechnic Institute, Peremogy Avenu 37/4, Kyiv 03056, Ukraine e-mail: [email protected] V. Halysh V. M. Gun’ko M. Kartel Chuiko Institute of Surface Chemistry, National Academy of Sciences of Ukraine, 17 General Naumov Street, Kyiv 03164, Ukraine O. Sevastyanova (&) Department of Fiber and Polymer Technology, KTH Royal Institute of Technology, Teknikringen 56-58, 100 44 Stockholm, Sweden e-mail: [email protected]
were used to analyze the sorption process. It was shown that adsorption isotherms fitted better into Freundlich isotherm model, which assumes a multilayer adsorption on a heterogeneous surface. The morphological, textural, and structural characteristics such as bulk and true densities, particle size distributions, porosity, and thermal decomposition features of the biosorbents were determined to understand better the mechanism of sorption of various pollutants. The results showed significant differences in the chemical compositions and physical properties of the initial and modified biomass samples, especially for the cellulosic biosorbents prepared with organosolv-oxidative pretreatment. For the removal of dyes, the O. Sevastyanova Department of Fiber and Polymer Technology, Wallenberg Wood Science Center, KTH Royal Institute of Technology, Teknikringen 56-58, 100 44 Stockholm, Sweden S. Pikus Faculty of Chemistry, Maria Curie-Sklodowska University, M. Curie-Sklodowska Sq. 3, 20-031 Lublin, Poland G. Dobele Latvian State Institute of Wood Chemistry, 27 Dzerbenes Str. LV, Riga 1006, Latvia B. Pasalskiy Kyiv National University of Trade and Economics, Kyoto str. 19, Kyiv 02156, Ukraine
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Cellulose
development of a pore structure as a result of the pretreatment seemed to play an important role, while the sorption of metals was strongly dependent on the chemical composition of the biosorbent. The highest adsorption capac
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