التفاصيل البيبلوغرافية
| العنوان: |
Photosensitization mechanisms and detoxification effect of extracellular organic matters and intracellular organic matters in antibiotics photodegradation: A case of Microcystis aeruginosa. |
| المؤلفون: |
Hu, Jiaqi1 (AUTHOR), Wei, Lianxue1 (AUTHOR), Zeng, Minxiang1 (AUTHOR), Liang, Huiqi1 (AUTHOR), Lu, Jinfeng1,2,3 (AUTHOR) lujinfeng@nankai.edu.cn |
| المصدر: |
Journal of Cleaner Production. Jul2024, Vol. 464, pN.PAG-N.PAG. 1p. |
| مصطلحات موضوعية: |
*MICROCYSTIS aeruginosa, *PHOTOSENSITIZATION, *ORGANIC compounds, *PHOTODEGRADATION, *DOMOIC acid, *FOURIER analysis |
| الشركة/الكيان: |
INTERNATIONAL Organization for Migration |
| مستخلص: |
Although studies on algae-mediated photodegradation for antibiotic removal in exploring cleaner environmental systems have been reported, the specific mechanism of algal organic matter for improving antibiotic photodegradation remains unclear. Herein, we proposed the enhanced efficiency mechanism of extracellular organic matter (EOM) and intracellular organic matter (IOM) in Microcystis aeruginosa for promoting tetracycline (TC) photodegradation. The degradation efficiencies of EOM and IOM on TC were found to obtain 74.5 and 83.3%, respectively. Three-dimensional excitation emission matrix fluorescence spectroscopy combined with parallel factor analysis and Fourier transform infrared confirmed that the carbonyl compounds exhibited a significant contribution to the photosensitivity of EOM and IOM. Mechanistic investigation showed that 3EOM* and 3IOM* were identified as the principal active species in the photodegradation of TC. The EOM and IOM showed excellent detoxification ability for TC removal and remarkable tolerance in real water backgrounds, highlighting strong potential for applications. This study refined the photosensitization mechanism of algal organic matter degradation antibiotics, and offered methods and theoretical basis for environment-friendly and sustainable control of antibiotic pollutants. [Display omitted] • EOM and IOM derived from Microcystis aeruginosa could significantly accelerate the TC photodegradation. • Triplet state EOM and IOM (3EOM* and 3IOM*) produced by photosensitized substances including tryptophan-like, fulvic-like, hydrophobic acids, and marine humic acid components were confirmed to be the principal active species. • EOM and IOM showed a remarkable detoxification capacity and excellent tolerance towards the real water background composition. [ABSTRACT FROM AUTHOR] |
| قاعدة البيانات: |
Academic Search Index |
