Photo-sequencing batch reactor with Klebsormidium nitens: a promising microalgal biotechnology for sustainable phosphorus management in wastewater treatment plants

This study aims at improving the existing algal-based wastewater treatment technologies by overcoming some of the major drawbacks of these systems such as large required land area, culture contamination, and energy-intensive algal harvesting. The experiments were carried out in an open photo-sequenc...

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Autores principales:	Dobril Valchev, Irina Ribarova, Blagoy Uzunov, Maya Stoyneva-Gärtner
Formato:	article
Lenguaje:	EN
Publicado:	IWA Publishing 2021
Materias:	algae-based technology circular economy microalgae phosphorus recovery phosphorus removal Environmental technology. Sanitary engineering TD1-1066
Acceso en línea:	https://doaj.org/article/68ee52389f17429fac382299db27a90b
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spelling	oai:doaj.org-article:68ee52389f17429fac382299db27a90b2021-11-06T11:05:34ZPhoto-sequencing batch reactor with Klebsormidium nitens: a promising microalgal biotechnology for sustainable phosphorus management in wastewater treatment plants0273-12231996-973210.2166/wst.2021.149https://doaj.org/article/68ee52389f17429fac382299db27a90b2021-05-01T00:00:00Zhttp://wst.iwaponline.com/content/83/10/2463https://doaj.org/toc/0273-1223https://doaj.org/toc/1996-9732This study aims at improving the existing algal-based wastewater treatment technologies by overcoming some of the major drawbacks of these systems such as large required land area, culture contamination, and energy-intensive algal harvesting. The experiments were carried out in an open photo-sequencing batch reactor at a laboratory-scale for nearly 2 months. A specific strain ACUS00207 of the aeroterrestrial green microalga Klebsormidium nitens (Kützing) Lokhorst was used. The strain is native to Bulgaria and belongs to a species that has never been used before in suspended growth systems for wastewater treatment for phosphorus removal. The culture of K. nitens showed promising results: phosphorus removal rates ranging from 0.4 to 1 mg total phosphorus L−1 d−1, efficient settling properties, and resistance to culture contamination with native microalgae. On the basis of the observed phosphorus removal mechanism of biologically mediated chemical precipitation/phosphorus precipitation, an innovative working mode of the sequencing batch reactor is suggested for reducing the hydraulic retention time and the required land area. HIGHLIGHTS Klebsormidium nitens used for the first time in suspended growth wastewater treatment.; Phosphorus removal rates ranging from 0.4 to 1 mg total phosphorus L−1 d−1.; Efficient settling properties and resistance to culture contamination.; Potential for reduction of the hydraulic retention time and the required land area.;Dobril ValchevIrina RibarovaBlagoy UzunovMaya Stoyneva-GärtnerIWA Publishingarticlealgae-based technologycircular economymicroalgaephosphorus recoveryphosphorus removalEnvironmental technology. Sanitary engineeringTD1-1066ENWater Science and Technology, Vol 83, Iss 10, Pp 2463-2476 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	algae-based technology circular economy microalgae phosphorus recovery phosphorus removal Environmental technology. Sanitary engineering TD1-1066
spellingShingle	algae-based technology circular economy microalgae phosphorus recovery phosphorus removal Environmental technology. Sanitary engineering TD1-1066 Dobril Valchev Irina Ribarova Blagoy Uzunov Maya Stoyneva-Gärtner Photo-sequencing batch reactor with Klebsormidium nitens: a promising microalgal biotechnology for sustainable phosphorus management in wastewater treatment plants
description	This study aims at improving the existing algal-based wastewater treatment technologies by overcoming some of the major drawbacks of these systems such as large required land area, culture contamination, and energy-intensive algal harvesting. The experiments were carried out in an open photo-sequencing batch reactor at a laboratory-scale for nearly 2 months. A specific strain ACUS00207 of the aeroterrestrial green microalga Klebsormidium nitens (Kützing) Lokhorst was used. The strain is native to Bulgaria and belongs to a species that has never been used before in suspended growth systems for wastewater treatment for phosphorus removal. The culture of K. nitens showed promising results: phosphorus removal rates ranging from 0.4 to 1 mg total phosphorus L−1 d−1, efficient settling properties, and resistance to culture contamination with native microalgae. On the basis of the observed phosphorus removal mechanism of biologically mediated chemical precipitation/phosphorus precipitation, an innovative working mode of the sequencing batch reactor is suggested for reducing the hydraulic retention time and the required land area. HIGHLIGHTS Klebsormidium nitens used for the first time in suspended growth wastewater treatment.; Phosphorus removal rates ranging from 0.4 to 1 mg total phosphorus L−1 d−1.; Efficient settling properties and resistance to culture contamination.; Potential for reduction of the hydraulic retention time and the required land area.;
format	article
author	Dobril Valchev Irina Ribarova Blagoy Uzunov Maya Stoyneva-Gärtner
author_facet	Dobril Valchev Irina Ribarova Blagoy Uzunov Maya Stoyneva-Gärtner
author_sort	Dobril Valchev
title	Photo-sequencing batch reactor with Klebsormidium nitens: a promising microalgal biotechnology for sustainable phosphorus management in wastewater treatment plants
title_short	Photo-sequencing batch reactor with Klebsormidium nitens: a promising microalgal biotechnology for sustainable phosphorus management in wastewater treatment plants
title_full	Photo-sequencing batch reactor with Klebsormidium nitens: a promising microalgal biotechnology for sustainable phosphorus management in wastewater treatment plants
title_fullStr	Photo-sequencing batch reactor with Klebsormidium nitens: a promising microalgal biotechnology for sustainable phosphorus management in wastewater treatment plants
title_full_unstemmed	Photo-sequencing batch reactor with Klebsormidium nitens: a promising microalgal biotechnology for sustainable phosphorus management in wastewater treatment plants
title_sort	photo-sequencing batch reactor with klebsormidium nitens: a promising microalgal biotechnology for sustainable phosphorus management in wastewater treatment plants
publisher	IWA Publishing
publishDate	2021
url	https://doaj.org/article/68ee52389f17429fac382299db27a90b
work_keys_str_mv	AT dobrilvalchev photosequencingbatchreactorwithklebsormidiumnitensapromisingmicroalgalbiotechnologyforsustainablephosphorusmanagementinwastewatertreatmentplants AT irinaribarova photosequencingbatchreactorwithklebsormidiumnitensapromisingmicroalgalbiotechnologyforsustainablephosphorusmanagementinwastewatertreatmentplants AT blagoyuzunov photosequencingbatchreactorwithklebsormidiumnitensapromisingmicroalgalbiotechnologyforsustainablephosphorusmanagementinwastewatertreatmentplants AT mayastoynevagartner photosequencingbatchreactorwithklebsormidiumnitensapromisingmicroalgalbiotechnologyforsustainablephosphorusmanagementinwastewatertreatmentplants
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Photo-sequencing batch reactor with Klebsormidium nitens: a promising microalgal biotechnology for sustainable phosphorus management in wastewater treatment plants

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