Insight mechanism of magnetic activated catalyst derived from recycled steel residue for black liquor degradation.

Autor: Flores-López ZD; Ingeniería en Nanotecnología, Universidad de La Ciénega del Estado de Michoacán, 59103, Sahuayo, Michoacán, Mexico., Solís-Díaz AB; Instituto de Biociencias, Universidad Autónoma de Chiapas, 30798, Tapachula, Chiapas, Mexico., Cervantes-Aviles PA; School of Engineering and Sciences, Tecnologico de Monterrey, 72456, Puebla, Mexico., Thangarasu P; Faculty of Chemistry, National University of Mexico, UNAM, 04510, Mexico City, Mexico., Kumar D; Department of Chemistry, School of Chemical Engineering and Physical Sciences, Lovely Professional University, Jalandhar, Punjab, India. deepak.sharma99967@gmail.com., Kaur H; Department of Chemistry, School of Chemical Engineering and Physical Sciences, Lovely Professional University, Jalandhar, Punjab, India., Singh J; Department of Chemistry, School of Chemical Engineering and Physical Sciences, Lovely Professional University, Jalandhar, Punjab, India., Lokande P; Advanced Physics Laboratory, Department of Physics, Savitribai Phule Pune University, Pune, India., Huerta-Aguilar CA; School of Engineering and Sciences, Tecnologico de Monterrey, 72456, Puebla, Mexico. huertaa@tec.mx., Mubarak NM; Petroleum and Chemical Engineering, Faculty of Engineering, Universiti Teknologi Brunei, Bandar Seri Begawan, BE1410, Brunei Darussalam. mubarak.yaseen@gmail.com.; Department of Biosciences, Saveetha School of Engineering, Saveetha Institute of Medical and Technical Sciences, Chennai, India. mubarak.yaseen@gmail.com.
Jazyk: angličtina
Zdroj: Scientific reports [Sci Rep] 2024 Aug 17; Vol. 14 (1), pp. 19057. Date of Electronic Publication: 2024 Aug 17.
DOI: 10.1038/s41598-024-70072-8
Abstrakt: The present work deals with developing a method for revalorizing steel residues to create sunlight-active photocatalysts based on iron oxides. Commercial-grade steel leftovers are oxidized under different combinations of pH and temperature (50-90 °C and 3 ≥ pH ≤ 5) in a low energy-intensive setup. The material with the highest production efficiency (yield > 12%) and magnetic susceptibility (χ m  = 387 × 10 -6  m 3 /kg) was further explored and modified by diffusion of M 2+ (Zn and Co) ions within the structure of the oxide using a hydrothermal method to create ZnFe 2 O 4 , CoFe 2 O 4 and combined Co-Zn ferrite. (Co-Zn)Fe 2 O 4 displayed a bandgap of 2.02 eV and can be activated under sunlight irradiation. Electron microscopy studies show that (Co-Zn)Fe 2 O 4 consists of particles with diameters between 400 and 700 nm, homogeneous size, even distribution, and good dispersibility. Application of the developed materials in the sunlight catalysis of black liquors from cellulose extraction resulted in a reduction of the Chemical Oxygen Demand (- 15% on average) and an enhancement in biodegradability (> 0.57 BOD/COD) after 180 min of reaction. Since the presented process employs direct solar light, it opens the possibility to large-scale water treatment and chemical upgrading applications.
(© 2024. The Author(s).)
Databáze: MEDLINE
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