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6398482 
Journal Article 
Anchoring N-Halo (sodium dichloroisocyanurate) on the nano-Fe3O4 surface as "chlorine reservoir": Antibacterial properties and wastewater treatment 
Khazaei, A; Sarmasti, N; Seyf, JY; Merati, Z 
2020 
Yes 
Arabian Journal of Chemistry
ISSN: 1878-5352 
Elsevier 
13 
1 
2219-2232 
WOS:000505076000173 
A novel retrievable bifunctional magnetic nano-structure (sodium dichloroisocyanurate immobilized on the Fe3O4@SiO2@Si(CH2)(3)Cl surface) was synthesized. Its antibacterial performance as water disinfectant successfully evaluated. The value of Minimum Bactericidal Concentration (625 ppm) and Minimum Inhibitory Concentration (314.5 ppm) show that magnetic nano-structure is a very effective antibacterial structure against the E. coli bacteria. In addition the viability of bacteria (%) was evaluated at different contact time against magnetic nano-structure. The disinfection procedure is very clean without any residual cyanuric acid in water. In other hand, oxidizing performance of nano-structure against the azo dye (acid red-18) was evaluated which attributed to the releasing HOCl in water. Kinetic of dye removal was measured at 0.01, 0.05, 0.1, and 0.5 g of nano-structure. Reducing pH and increasing temperature leads to increased Acid Red 18 degradation. Chemical oxygen demand (COD) measurement shows the effectiveness of nano-structure in acid red-18 degradation.The nano-structure turns to be magnetically retrievable, clean disinfectant, wastewater treatment agent, and its chlorine can be regenerated simply by exposure to household bleach such as Ca(OCl)(2). (C) 2018 Production and hosting by Elsevier B.V. on behalf of King Saud University.< 
Disinfection; Wast water treatment; Azo dye; Magnetic chlorine reservoir