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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Autores principales:	Lei Bi, Gang Pan
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2017
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/8f90b24e8fab45f5bbc8b36554490894
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spelling	oai:doaj.org-article:8f90b24e8fab45f5bbc8b365544908942021-12-02T15:04:58ZFrom harmful Microcystis blooms to multi-functional core-double-shell microsphere bio-hydrochar materials10.1038/s41598-017-15696-92045-2322https://doaj.org/article/8f90b24e8fab45f5bbc8b365544908942017-11-01T00:00:00Zhttps://doi.org/10.1038/s41598-017-15696-9https://doaj.org/toc/2045-2322Abstract 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.Lei BiGang PanNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 7, Iss 1, Pp 1-9 (2017)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Lei Bi Gang Pan From harmful Microcystis blooms to multi-functional core-double-shell microsphere bio-hydrochar materials
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.
format	article
author	Lei Bi Gang Pan
author_facet	Lei Bi Gang Pan
author_sort	Lei Bi
title	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_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_sort	from harmful microcystis blooms to multi-functional core-double-shell microsphere bio-hydrochar materials
publisher	Nature Portfolio
publishDate	2017
url	https://doaj.org/article/8f90b24e8fab45f5bbc8b36554490894
work_keys_str_mv	AT leibi fromharmfulmicrocystisbloomstomultifunctionalcoredoubleshellmicrospherebiohydrocharmaterials AT gangpan fromharmfulmicrocystisbloomstomultifunctionalcoredoubleshellmicrospherebiohydrocharmaterials
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From harmful Microcystis blooms to multi-functional core-double-shell microsphere bio-hydrochar materials

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