A Method to Prepare Magnetic Nanosilicate Platelets for Effective Removal of Microcystis aeruginosa and Microcystin-LR
| Autor: | Jiang-Jen Lin, Maw-Rong Lee, Yen-Hsien Li, Shu-Chi Chang, Bo-Li Lu |
|---|---|
| Rok vydání: | 2017 |
| Předmět: |
0106 biological sciences
chemistry.chemical_classification biology Toxin Chemistry 010604 marine biology & hydrobiology fungi food and beverages Microcystin-LR Microcystin 010501 environmental sciences medicine.disease_cause biology.organism_classification 01 natural sciences Algal bloom chemistry.chemical_compound Environmental chemistry medicine Microcystis aeruginosa Water treatment Turbidity Eutrophication 0105 earth and related environmental sciences |
| Zdroj: | Methods in Molecular Biology ISBN: 9781493969562 |
| DOI: | 10.1007/978-1-4939-6958-6_8 |
| Popis: | Algal toxin is a unique type of toxin generated with harmful algal blooms in water bodies. This phenomenon is worsened by eutrophication caused by excessive discharge of nutrients into surface water bodies. Since algal toxins are hard to remove after they enter the water treatment processes, an efficient method is required to inhibit the growth of algal cells, to settle the cells at the bottom of the water body and to removes the toxin from the water. We report an efficient way to prepare a novel nanohybrid material, i.e., magnetic nanosilicate platelet (MNSP), and its effects on the removal of microcystin toxins as well as the cells of Microcystis aeruginosa. MNSP was fabricated by a special treatment of a clay mineral, montmorillonite, and then its surface was decorated with magnetite nanoparticles by in situ synthesis. The nanohybrid can efficiently inhibit the growth of M. aeruginosa-a typical species that can generate one of the most notorious algal toxins, i.e., microcystins. Algal cells can be settled with minimal 500 ppm MNSP, and the turbidity can be reduced by more than 67%. The removal of microcystin-LR (MC-LR) was as high as 99.39% at an concentration of 100 ppm, while the pristine nanosilicate platelet could only remove 36.84% at the same dosage. |
| Databáze: | OpenAIRE |
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