چکیده مقاله
Singlet oxygen ¹O₂ , a highly reactive yet non radical oxidant, has become a key species in advanced oxidation processes AOPs for sustainable water and wastewater treatment Unlike hydroxyl •OH and sulfate SO₄•⁻ radicals, ¹O₂ exhibits strong electrophilic selectivity toward electron rich pollutants, enabling efficient degradation with reduced scavenging by background ions and natural organic matter This review summarizes the physicochemical fundamentals of ¹O₂, including its generation, lifetime, and reaction mechanisms in aqueous media Various generation pathways—photochemical photosensitization, catalytic activation of oxidants such as peroxymonosulfate, and emerging electrochemical systems—are discussed, emphasizing design strategies that enhance quantum yield, stability, and energy efficiency Comparative assessment with conventional reactive oxygen species highlights the distinctive advantages of ¹O₂ in selectivity, matrix tolerance, and solar compatibility Furthermore, the review explores its dual role in contaminant oxidation and microbial disinfection, underlining its environmental relevance Despite significant progress, limitations persist regarding its short lifetime, detection accuracy, and catalyst deactivation in complex waters Addressing these challenges through material innovation, hybrid process coupling, and real time monitoring can advance ¹O₂ mediated AOPs from laboratory research toward scalable, low energy technologies for selective and sustainable water purification
کلیدواژهها
نویسندگان
Mahdi Maleki Lonbar
Graduate Faculty of Environment, Department of Environmental Engineering, University of Tehran, Tehran, Iran
Majid Baghdadi
Graduate Faculty of Environment, Department of Environmental Engineering, University of Tehran, Tehran, Iran
شیوه ارجاع
Maleki Lonbar, Mahdi and Baghdadi, Majid,1404,Singlet oxygen as a selective oxidant in advanced oxidation processes for water treatment,The Second National Conference on Future and Environmental Sustainability,Jolfa
ارائهشده در
مجموعه مقالات دومین کنفرانس ملی آینده و پایداری محیط زیست4 آذر 1404 · جلفا