Catalytic Ozonation of Ponceau 4R Using Multifunctional Magnetic Biochar Prepared from Rubber Seed Shell
Journal of Ecological Engineering(2023)
摘要
Herein, abundant and underutilized rubber seed shell (RSS) was valorized for one-pot production of multifunctional magnetic biochar (MBC) through one-pot FeCl3 activation. Fe3O4 and Fe0 crystals were formed in MBC, providing a saturation magnetization of 6.83 emu/g. In addition, the material had a specific surface area of 378 m2/g and a total pore volume of 0.22 cm3/g. MBC was subsequently explored for catalytic ozonation of Ponceau 4R (P4R). As a result, MBC enhanced P4R ozonation in a broad pH range of 3.0-9.0. At pH 5.8, the pseudo-first-order rate constant of P4R decolorization with MBC improved by 50% compared to that without MBC. Summarily, RSSderived MBC is a potential catalyst for enhanced ozonation of Ponceau 4R thanks to its low cost, eco-friendliness, relative effectiveness, and magnetic separability.
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关键词
rubber seed shell,magnetic biochar,one-pot strategy,catalytic ozonation,Ponceau 4R.
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