From harmful Microcystis blooms to multi-functional core-double-shell microsphere bio-hydrochar materials
Abstract Harmful algal blooms (HABs) induced by eutrophication is becoming a serious global environmental problem affecting public health and aquatic ecological sustainability. A novel strategy for the utilization of biomass from HABs was developed by converting the algae cells into hollow mesoporou...
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| Format: | Article |
| Language: | English |
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Nature Portfolio
2017-11-01
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| Series: | Scientific Reports |
| Online Access: | https://doi.org/10.1038/s41598-017-15696-9 |
| _version_ | 1830453206892675072 |
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| author | Lei Bi Gang Pan |
| author_facet | Lei Bi Gang Pan |
| author_sort | Lei Bi |
| collection | DOAJ |
| description | Abstract Harmful algal blooms (HABs) induced by eutrophication is becoming a serious global environmental problem affecting public health and aquatic ecological sustainability. A novel strategy for the utilization of biomass from HABs was developed by converting the algae cells into hollow mesoporous bio-hydrochar microspheres via hydrothermal carbonization method. The hollow microspheres were used as microreactors and carriers for constructing CaO2 core-mesoporous shell-CaO2 shell microspheres (OCRMs). The CaO2 shells could quickly increase dissolved oxygen to extremely anaerobic water in the initial 40 min until the CaO2 shells were consumed. The mesoporous shells continued to act as regulators restricting the release of oxygen from CaO2 cores. The oxygen-release time using OCRMs was 7 times longer than when directly using CaO2. More interestingly, OCRMs presented a high phosphate removal efficiency (95.6%) and prevented the pH of the solution from rising to high levels in comparison with directly adding CaO2 due to the OH− controlled-release effect of OCRMs. The distinct core-double-shell micro/nanostructure endowed the OCRMs with triple functions for oxygen controlled-release, phosphorus removal and less impact on water pH. The study is to explore the possibility to prepare smarter bio-hydrochar materials by utilizing algal blooms. |
| first_indexed | 2024-12-21T09:02:48Z |
| format | Article |
| id | doaj.art-8f90b24e8fab45f5bbc8b36554490894 |
| institution | Directory Open Access Journal |
| issn | 2045-2322 |
| language | English |
| last_indexed | 2024-12-21T09:02:48Z |
| publishDate | 2017-11-01 |
| publisher | Nature Portfolio |
| record_format | Article |
| series | Scientific Reports |
| spelling | doaj.art-8f90b24e8fab45f5bbc8b365544908942022-12-21T19:09:26ZengNature PortfolioScientific Reports2045-23222017-11-01711910.1038/s41598-017-15696-9From harmful Microcystis blooms to multi-functional core-double-shell microsphere bio-hydrochar materialsLei Bi0Gang Pan1Department of Environmental Nano-materials, Research Center for Eco-Environmental Sciences, Chinese Academy of SciencesDepartment of Environmental Nano-materials, Research Center for Eco-Environmental Sciences, Chinese Academy of SciencesAbstract Harmful algal blooms (HABs) induced by eutrophication is becoming a serious global environmental problem affecting public health and aquatic ecological sustainability. A novel strategy for the utilization of biomass from HABs was developed by converting the algae cells into hollow mesoporous bio-hydrochar microspheres via hydrothermal carbonization method. The hollow microspheres were used as microreactors and carriers for constructing CaO2 core-mesoporous shell-CaO2 shell microspheres (OCRMs). The CaO2 shells could quickly increase dissolved oxygen to extremely anaerobic water in the initial 40 min until the CaO2 shells were consumed. The mesoporous shells continued to act as regulators restricting the release of oxygen from CaO2 cores. The oxygen-release time using OCRMs was 7 times longer than when directly using CaO2. More interestingly, OCRMs presented a high phosphate removal efficiency (95.6%) and prevented the pH of the solution from rising to high levels in comparison with directly adding CaO2 due to the OH− controlled-release effect of OCRMs. The distinct core-double-shell micro/nanostructure endowed the OCRMs with triple functions for oxygen controlled-release, phosphorus removal and less impact on water pH. The study is to explore the possibility to prepare smarter bio-hydrochar materials by utilizing algal blooms.https://doi.org/10.1038/s41598-017-15696-9 |
| spellingShingle | Lei Bi Gang Pan From harmful Microcystis blooms to multi-functional core-double-shell microsphere bio-hydrochar materials Scientific Reports |
| title | From harmful Microcystis blooms to multi-functional core-double-shell microsphere bio-hydrochar materials |
| title_full | From harmful Microcystis blooms to multi-functional core-double-shell microsphere bio-hydrochar materials |
| title_fullStr | From harmful Microcystis blooms to multi-functional core-double-shell microsphere bio-hydrochar materials |
| title_full_unstemmed | From harmful Microcystis blooms to multi-functional core-double-shell microsphere bio-hydrochar materials |
| title_short | From harmful Microcystis blooms to multi-functional core-double-shell microsphere bio-hydrochar materials |
| title_sort | from harmful microcystis blooms to multi functional core double shell microsphere bio hydrochar materials |
| url | https://doi.org/10.1038/s41598-017-15696-9 |
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