| Silica-quaternary ammonium “Fixed-Quat” nanofilm coated fiberglass mesh for water disinfection and harmful algal blooms control |
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| 基金项目： | Citrus Disease Research and Extension;do not necessarily reflect the view of the U.S.Department of Agriculture |
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| 摘 要： | Intensification of pollution loading worldwide has promoted an escalation of different types of disease-causing microorganisms, such as harmful algal blooms(HABs), instigating detrimental impacts on the quality of receiving surface waters. Formation of unwanted disinfection by-products(DBPs) resulting from conventional disinfection technologies reveals the need for the development of new sustainable alternatives. Quaternary Ammonium Compounds(QACs) are cationic surfactants widely known for their effective biocidal properties at the ppm level. In this study, a novel silica-based antimicrobial nanofilm was developed using a composite of silica-modified QAC(Fixed-Quat) and applied to a fiberglass mesh as an active surface via sol–gel technique. The synthesized Fixed-Quat nanocoating was found to be effective against E. coli with an inactivation rate of 1.3 × 10~(-3) log reduction/cm min. The Fixed-Quat coated fiberglass mesh also demonstrated successful control of Microcystis aeruginosa with more than 99% inactivation after 10 hr of exposure.The developed antimicrobial mesh was also evaluated with wild-type microalgal species collected in a water body experiencing HABs, obtaining a 97% removal efficiency. Overall,the silica-functionalized Fixed-Quat nanocoating showed promising antimicrobial properties for water disinfection and HABs control, while decreasing concerns related to DBPs formation and the possible release of toxic nanomaterials into the environment.
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| 收稿时间： | 2019-01-22 |
Silica-quaternary ammonium "Fixed-Quat" nanofilm coated fiberglass mesh for water disinfection and harmful algal blooms control |
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| Daniela Diaz,Jared Church,Mikaeel Young,Keug Tae Kim,Jungsu Park,Yun Bin Hwang,Swadeshmukul Santr,Woo Hyoung Lee. Silica-quaternary ammonium "Fixed-Quat" nanofilm coated fiberglass mesh for water disinfection and harmful algal blooms control[J]. Journal of environmental sciences (China), 2019, 31(8): 213-224 |
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| Authors: | Daniela Diaz Jared Church Mikaeel Young Keug Tae Kim Jungsu Park Yun Bin Hwang Swadeshmukul Santr Woo Hyoung Lee |
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| Affiliation: | 1. Department of Civil, Environmental, and Construction Engineering, University of Central Florida, 12800 Pegasus Drive, Orlando, FL 32816, USA;2. NanoScience Technology Center, University of Central Florida, 12424 Research Parkway, Orlando, FL 32826, USA;3. Burnett School of Biomedical Sciences, University of Central Florida, 6850 Lake Nona Blvd, Orlando, FL 32827, USA;4. Department of Environmental & Energy Engineering, Suwon University, 17 Wauan-gil, Bongdam-eup, Hwaseong-si, Gyeonggi-do 445-743, Republic of Korea;5. K-water Institute, Korea Water Resources Corporation, 200 Sintanjin-Ro, Daedeok-Gu, Daejeon 34350, Republic of Korea;6. Department of Material Science and Engineering, 4000 Central Florida Blvd, University of Central Florida, Orlando, FL 32816, USA;7. Department of Chemistry, 4111 Libra Drive, University of Central Florida, Orlando, FL 32816, USA |
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| Abstract: | |
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| Keywords: | Fiberglass mesh HAB mitigation Nanocoating Quaternary ammonium compounds (QACs) Silica-functionalization Water disinfection |
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