A new insight into catalytic ozonation of sulfasalazine antibiotic by plasma-treated limonite nanostructures: Experimental, modeling and mechanism
نویسندگان
چکیده
This study investigates the application of novel natural and plasma-treated iron (III) oxide-hydroxide (limonite) catalysts on degradation/mineralization sulfasalazine (SSZ) antibiotic by ozone-based advanced oxidation processes (AOPs). The limonite nanostructures were prepared non-precursor, environmentally friendly, fast glow discharge plasma technology under oxygen (PTL/O2) oxygen/argon (PTL/O2/Ar) gaseous atmosphere. characteristic analysis demonstrated enhanced surface area, morphology, active sites, physical stability after treatment. It was found that SSZ effectively improved (36%) in heterogeneous catalytic ozonation process (HCOP) using PTL/O2/Ar compared to sole ozonation. Modeling optimization degradation through central composite design (CCD) artificial neural network (ANN, topology 4:7:1) showed complete can be achieved at optimized condition (initial pH = 7, ozone concentration 15 mg L-1, catalyst loading 1.5 g L-1 treatment time 50 min). effect organic inorganic salts confirmed reactive species, mainly hydroxyl radicals, responsible for HCOP. main intermediates during identified. toxicity solution electrical energy consumption decreased nanocatalysts Economic studies 46% reduction HCOP NL samples. For first time, molecular dynamics simulation applied provide a deeper insight into adsorption mechanisms onto (1 1 1)
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ژورنال
عنوان ژورنال: Chemical Engineering Journal
سال: 2022
ISSN: ['1873-3212', '1385-8947']
DOI: https://doi.org/10.1016/j.cej.2021.131230