Assessment of Synechococcus elongatus PCC 7942 as an option for sustainable wastewater treatment

Industrial wastewaters are recognized as a valuable resource, however, their disposal without proper treatment can result in environmental deterioration. The associated environmental/operational cost of wastewater treatment necessitates upgrade of applied processes towards the goals of sustainabilit...

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Autores principales:	Georgios Samiotis, Kostas Stamatakis, Elisavet Amanatidou
Formato:	article
Lenguaje:	EN
Publicado:	IWA Publishing 2021
Materias:	cyanobacteria disinfection growth rate industrial wastewater nitrates removal saline wastewater Environmental technology. Sanitary engineering TD1-1066
Acceso en línea:	https://doaj.org/article/fc4a67dcf9f84688a4961fbed000746c
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spelling	oai:doaj.org-article:fc4a67dcf9f84688a4961fbed000746c2021-11-06T11:22:21ZAssessment of Synechococcus elongatus PCC 7942 as an option for sustainable wastewater treatment0273-12231996-973210.2166/wst.2021.319https://doaj.org/article/fc4a67dcf9f84688a4961fbed000746c2021-09-01T00:00:00Zhttp://wst.iwaponline.com/content/84/6/1438https://doaj.org/toc/0273-1223https://doaj.org/toc/1996-9732Industrial wastewaters are recognized as a valuable resource, however, their disposal without proper treatment can result in environmental deterioration. The associated environmental/operational cost of wastewater treatment necessitates upgrade of applied processes towards the goals of sustainability and mitigation of climate change. The implementation of cyanobacteria-based processes can contribute to these goals via resources recovery, production of high-value products, carbon fixation and green-energy production. The present study evaluates the cyanobacterium Synechococcus elongatus PCC 7942 (S7942) as a biological component for novel and sustainable alternatives to typical biological nutrient removal processes. Valuable results regarding cultivation temperature boundaries, applied disinfection techniques and analytical methods, as well as regarding relations between parameters expressing S7942 biomass concentration are presented. The results show that at typical industrial wastewater temperatures, S7942 efficiently grew and removed nitrates from treated snack-industry's wastewater. Moreover, in cultures with treated and relatively saline dairy wastewater, its growth rate slightly decreased, but nevertheless nitrates removal rate remained efficiently high. A comparison between typical denitrification processes and the proposed nutrient removal process indicated that a S7942-based system may constitute an alternative or a supplementary to denitrification process. Thus, Synechococcus elongatus PCC 7942 proved to be a potent candidate towards sustainable industrial wastewater treatment applications. HIGHLIGHTS Synechococcus elongatus PCC 7942 efficiently grows in treated industrial wastewater.; High rates of nitrates removal and growth at typical wastewater temperatures.; Efficient growth and high nitrates removal in saline industrial wastewater.; Filtration coupled with chlorination/dechlorination is effective for pre-treatment.;Georgios SamiotisKostas StamatakisElisavet AmanatidouIWA Publishingarticlecyanobacteriadisinfectiongrowth rateindustrial wastewaternitrates removalsaline wastewaterEnvironmental technology. Sanitary engineeringTD1-1066ENWater Science and Technology, Vol 84, Iss 6, Pp 1438-1451 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	cyanobacteria disinfection growth rate industrial wastewater nitrates removal saline wastewater Environmental technology. Sanitary engineering TD1-1066
spellingShingle	cyanobacteria disinfection growth rate industrial wastewater nitrates removal saline wastewater Environmental technology. Sanitary engineering TD1-1066 Georgios Samiotis Kostas Stamatakis Elisavet Amanatidou Assessment of Synechococcus elongatus PCC 7942 as an option for sustainable wastewater treatment
description	Industrial wastewaters are recognized as a valuable resource, however, their disposal without proper treatment can result in environmental deterioration. The associated environmental/operational cost of wastewater treatment necessitates upgrade of applied processes towards the goals of sustainability and mitigation of climate change. The implementation of cyanobacteria-based processes can contribute to these goals via resources recovery, production of high-value products, carbon fixation and green-energy production. The present study evaluates the cyanobacterium Synechococcus elongatus PCC 7942 (S7942) as a biological component for novel and sustainable alternatives to typical biological nutrient removal processes. Valuable results regarding cultivation temperature boundaries, applied disinfection techniques and analytical methods, as well as regarding relations between parameters expressing S7942 biomass concentration are presented. The results show that at typical industrial wastewater temperatures, S7942 efficiently grew and removed nitrates from treated snack-industry's wastewater. Moreover, in cultures with treated and relatively saline dairy wastewater, its growth rate slightly decreased, but nevertheless nitrates removal rate remained efficiently high. A comparison between typical denitrification processes and the proposed nutrient removal process indicated that a S7942-based system may constitute an alternative or a supplementary to denitrification process. Thus, Synechococcus elongatus PCC 7942 proved to be a potent candidate towards sustainable industrial wastewater treatment applications. HIGHLIGHTS Synechococcus elongatus PCC 7942 efficiently grows in treated industrial wastewater.; High rates of nitrates removal and growth at typical wastewater temperatures.; Efficient growth and high nitrates removal in saline industrial wastewater.; Filtration coupled with chlorination/dechlorination is effective for pre-treatment.;
format	article
author	Georgios Samiotis Kostas Stamatakis Elisavet Amanatidou
author_facet	Georgios Samiotis Kostas Stamatakis Elisavet Amanatidou
author_sort	Georgios Samiotis
title	Assessment of Synechococcus elongatus PCC 7942 as an option for sustainable wastewater treatment
title_short	Assessment of Synechococcus elongatus PCC 7942 as an option for sustainable wastewater treatment
title_full	Assessment of Synechococcus elongatus PCC 7942 as an option for sustainable wastewater treatment
title_fullStr	Assessment of Synechococcus elongatus PCC 7942 as an option for sustainable wastewater treatment
title_full_unstemmed	Assessment of Synechococcus elongatus PCC 7942 as an option for sustainable wastewater treatment
title_sort	assessment of synechococcus elongatus pcc 7942 as an option for sustainable wastewater treatment
publisher	IWA Publishing
publishDate	2021
url	https://doaj.org/article/fc4a67dcf9f84688a4961fbed000746c
work_keys_str_mv	AT georgiossamiotis assessmentofsynechococcuselongatuspcc7942asanoptionforsustainablewastewatertreatment AT kostasstamatakis assessmentofsynechococcuselongatuspcc7942asanoptionforsustainablewastewatertreatment AT elisavetamanatidou assessmentofsynechococcuselongatuspcc7942asanoptionforsustainablewastewatertreatment
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Assessment of Synechococcus elongatus PCC 7942 as an option for sustainable wastewater treatment

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