Optimization of remedial nano-agent and its effect on dominant algal species succession in eutrophic water body
| Autor: | Gongduan Fan, Jing Luo, Mingqian Xia, Jiajun Zhan, Chen Zhuoyi, Banghao Du, Shimin Wu, Minchen Bao |
|---|---|
| Rok vydání: | 2021 |
| Předmět: |
Cyanobacteria
Chlorophyll a Microcystis Environmental Engineering Harmful Algal Bloom 0208 environmental biotechnology 02 engineering and technology Ecological succession 010501 environmental sciences Management Monitoring Policy and Law Polysaccharide 01 natural sciences Algal bloom chemistry.chemical_compound Ingredient Microcystis aeruginosa Food science Waste Management and Disposal 0105 earth and related environmental sciences Diatoms chemistry.chemical_classification Biomass (ecology) biology Chlorophyll A fungi Water General Medicine Silicon Dioxide biology.organism_classification 020801 environmental engineering chemistry |
| Zdroj: | Journal of Environmental Management. 281:111884 |
| ISSN: | 0301-4797 |
| DOI: | 10.1016/j.jenvman.2020.111884 |
| Popis: | A new method for algal community restructuring is proposed, where harmful algae growth is inhibited through the addition of remedial nano-agent, while probiotic algae growth is promoted or only affected indistinctively. In this paper, the inhibiting effects of five different nanomaterials on Microcystis aeruginosa (M. aeruginosa) and Cyclotella sp. were studied, and the optimal nanomaterial was served as algae-inhibition ingredient of the remedial agent. The effects of the remedial agent on algal growth and their physiological characteristics were investigated, and the restructuring of algal community in actual water samples was explored. The results indicated that the inhibition ratio of 10 mg/L nm-Cu2O/SiO2 on M. aeruginosa and Cyclotella sp. could reach 293.1% and 82.8% respectively, acting as the best candidate for algae-inhibiting ingredient. After adding the remedial nano-agent made with nm-Cu2O/SiO2, the content of chlorophyll a, protein, and polysaccharides of M. aeruginosa decreased sharply, while the physiological characteristics of Cyclotella sp. were not significantly affected. Besides, the total biomass and proportion of cyanobacteria dropped (P |
| Databáze: | OpenAIRE |
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