نوع مقاله : پژوهشی
نویسندگان
1 دانشجوی دکتری تخصصی، گروه شیمی، دانشکده علوم، دانشگاه زنجان، زنجان، ایران
2 دانشگاه زنجان
3 مرکز تحقیقات سلامت و محیط‌زیست (HERC)، دانشگاه علوم پزشکی تبریز، تبریز، ایران
چکیده
کلیدواژه‌ها
موضوعات
عنوان مقاله [English]
نویسندگان [English]
In this study, a custom-designed rotary photoreactor equipped with LED light and activated persulfate was employed to remove the persistent dye Basic Red 46 from aqueous solutions. Key operational parameters including initial dye concentration, persulfate dosage, cylinder rotation speed, and light source position were investigated. The results demonstrated that lower dye concentrations, increased persulfate dosage up to 50 mM, a moderate rotation speed (6 rpm), and positioning the LED on the left side of the reactor significantly enhanced removal efficiency. Kinetic analysis confirmed that the degradation process followed a pseudo-first-order model. TOC analysis showed a considerable reduction in organic content, indicating effective breakdown of the dye structure. Furthermore, GC-MS analysis identified intermediate compounds with simpler structures confirming the mineralization of the dye. These findings clearly demonstrate the high efficiency of the LED/persulfate system in degrading resistant dye pollutants and highlight its potential for sustainable industrial wastewater treatment.
کلیدواژه‌ها [English]
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