Use of a novel bio-magnetic nanocomposite synthesized from industrial tomato processing waste for methylene blue removal
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ORIGINAL RESEARCH
Use of a novel bio-magnetic nanocomposite synthesized from industrial tomato processing waste for methylene blue removal: sorption optimization, kinetic and isotherm studies Yekbun Avs¸ ar Teymur . Fuat Gu¨zel
. Filiz Koyuncu . Gu¨lbahar Akkaya Sayg˘ılı
Received: 15 April 2020 / Accepted: 3 September 2020 Ó Springer Nature B.V. 2020
Abstract In the current study, the methylene blue (MB) dye sorption performance of a new biomagnetic composite (MTNC) synthesized by modification with Fe3O4 nanoparticles of industrial tomato processing (Lycopersicon esculentum Mill.) processing solid waste (TW) was investigated. The XRD, BET, SEM, FT-IR and VSM analysis techniques were used in the characterization of MTNC. The specific surface area, total pore volume, micropore volume, mesopore volume, and mean pore diameter values of MTNC are 28.21 m2/g, 0.082 cm3/g, 0.003 cm3/g, 0.079 and 11.06 nm, respectively. Also, its saturation magnetization value was determined to be 24.80 emu/g. The maximum MB sorption capacity of the MTNC determined to be 90.09 mg/g under optimized conditions of the solution pH of 7.0, WPC dosage of 50 mg, contact time of 180 min, and solution temperature of 50 °C. The kinetics and isotherm data were well fitted to the pseudo-second order kinetic and Langmuir isotherm models, respectively. The thermodynamic parameters calculated for the MTNC-MB sorption system proved that the process was spontaneous and endothermic in nature. Y. A. Teymur F. Koyuncu Department of Chemistry, Institute of Science and Technology, Dicle University, 21280 Diyarbakir, Turkey F. Gu¨zel (&) G. A. Sayg˘ılı Department of Chemistry, Faculty of Education, Dicle University, 21280 Diyarbakir, Turkey e-mail: [email protected]; [email protected]
Keywords Tomato processing waste Magnetic nanocomposite Methylene blue removal Magnetic separation
Introduction Rapid increase in industrialization in the recent years has resulted in the generation of numerous kinds of toxic pollutants. These pollutants are considered to be the major cause of water pollution worldwide. Many industries like textiles, paint, food processing, tanneries, cosmetics, paper and pulp, etc. consume dyes to color their products thereby creating large amounts of dye contaminated wastewater (Shakoor and Nasar 2017). Synthetic dyes are generally used for the coloration of products in the industries such as textile, paint, paper, plastic, leather and cosmetic. More than seven thousand tons of various paints are produced annually for use in these industries. Each year, approximately 1000 tons of dyes are discarded especially in effluents from the textile industry (Lee et al. 2015). Due to their complex chemical structure and poor degradation, they cause water bodies to be destroyed, which directly or indirectly affects human, animal and environmental health, and in particular causes various diseases such as carcinogenic, teratogenic and mutagenic disorders in humans (Tuzen et al. 2018; Khorasani and
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