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Improving Microcystis aeruginosa removal efficiency through enhanced sonosensitivity of nitrogen-doped nanodiamondsWu, Xiaoge ...Traditional methods for algae removal in drinking water treatment, such as coagulation and sedimentation, face challenges due to the negative charge on algae cells’ surfaces, resulting in ineffective ... removal. Ultrasonic cavitation has shown promise in enhancing coagulation performance by disrupting extracellular polymer structures and improving cyanobacteria removal through various mechanisms like shear force and free radical reactions. However, the short lifespan and limited mass transfer distance of free radicals in conventional ultrasonic treatment lead to high energy consumption, limiting widespread application. To overcome these limitations and enhance energy efficiency, advanced carbon-based materials were developed and tested. Nitrogen-doped functional groups on nanodiamond surfaces were found to boost sonosensitivity by increasing the production of reactive oxygen species at the sonosensitizer-water interface. Utilizing low-power ultrasound (0.12 W/mL) in combination with N-ND treatment for 5 min, removal rates of Microcystis aeruginosa cells in water exceeded 90 %, with enhanced removal of algal organic matters and microcystins in water. Visualization through confocal microscopy highlighted the role of positively charged nitrogen-doped nanodiamonds in aggregating algae cells. The synergy between cell capturing and catalysis of N-ND indicates that efficient mass transfer of free radicals from the sonosensitizer’s surface to the microalgae’s surface is critical for promoting cyanobacteria floc formation. This study underscores the potential of employing a low-intensity ultrasound and N-ND system in effectively improving algae removal in water treatment processes.Vir: Ultrasonics Sonochemistry. - ISSN 1350-4177 (Vol. 109, [articel no.] 106993, Oct. 2024, str. 1-14)Vrsta gradiva - članek, sestavni del ; neleposlovje za odrasleLeto - 2024Jezik - angleškiCOBISS.SI-ID - 202737411
Avtor
Wu, Xiaoge |
Yang, Su |
Li, Wenshu |
Wang, JuanJuan |
Dular, Matevž |
Tan, Xiao
Teme
ultrasound |
sonochemistry |
nanodiamonds |
free radicals |
ultrazvok |
sonokemija |
nanodiamanti |
prosti radikali
vir: Ultrasonics Sonochemistry. - ISSN 1350-4177 (Vol. 109, [articel no.] 106993, Oct. 2024, str. 1-14)
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Leto | Faktor vpliva | Izdaja | Kategorija | Razvrstitev | ||||
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JCR | SNIP | JCR | SNIP | JCR | SNIP | JCR | SNIP |
Baze podatkov, v katerih je revija indeksirana
Ime baze podatkov | Področje | Leto |
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Povezave do osebnih bibliografij avtorjev | Povezave do podatkov o raziskovalcih v sistemu SICRIS |
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Wu, Xiaoge | |
Yang, Su | |
Li, Wenshu | |
Wang, JuanJuan | |
Dular, Matevž | 23471 |
Tan, Xiao |
Vir: Osebne bibliografije
in: SICRIS
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