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Sunlight potential for microalgae cultivation in the mid-latitude region – the Baltic states

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dc.contributor.authorStunda-Zujeva, A.
dc.contributor.authorZuteris, M.
dc.contributor.authorRugele, K.
dc.date.accessioned2018-05-10T11:32:21Z
dc.date.available2018-05-10T11:32:21Z
dc.date.issued2018
dc.descriptionArticleeng
dc.description.abstractProducts, e.g. food and feed from microalgae are a promising part of bioeconomy. One of the most investigated and highly demanded microalgae is Spirulina . Light is one of limi ting factors for biomass cultivation by photosynthesis. Sunlight is cheap and climate friendly light source. The aim of this study was to evaluate available sunlight potential in the mid - latitude region - the Baltic states (Europe, 55 – 60 °N ) for microalgae, e.g. Spirulina growth. The data of Climate atlas based on satellites of EUMETSAT and data from an observation station in Riga were analyzed. The latitude and climate (cloudiness) were main parameters affecting the total solar radiation re ceived by Earth’s surface. The sunlight potential in the Baltic states was higher than in most of Europe in similar latitude. Multi - year mean daylight intensity in the Baltic states was slightly less than in Southern France or Bulgaria, (26 klux and 30 klu x , respectively, in summer) where Spirulina is commercially produced. Hourly solar radiation varied a lot in the Baltic states – from 880 W m - 2 to 200 W m - 2 , sunny and overcasted noon of summer day , respectively; average value (8 a.m. – 4p.m.) was 450 W m - 2 . Summer days are longer than 12 h, reaching 18 h in midsummer. The sunlight potential is suitable for microalgae, e.g. Spirulina cultivation in this period. From November till February days are shorter than 10 h and solar radiation is less than 300 W m - 2 e ven in noon of sunny days.eng
dc.identifier.issn1406-894X
dc.identifier.publicationAgronomy Research, 2018, vol. 16, no. 3, pp. 910-916eng
dc.identifier.urihttp://hdl.handle.net/10492/3956
dc.identifier.urihttp://dx.doi.org/10.15159/ar.18.126
dc.rights.holderCopyright 2009 by Estonian University of Life Sciences, Latvia University of Agriculture, Aleksandras Stulginskis University, Lithuanian Research Centre for Agriculture and Forestry. No part of this publication may be reproduced or transmitted in any form, or by any means, electronic or mechanical, incl. photocopying, electronic recording, or otherwise without the prior written permission from the Estonian University of Life Sciences, Latvia University of Agriculture, Aleksandras Stulginskis University, Lithuanian Research Centre for Agriculture and Forestryeng
dc.subjectsunlighteng
dc.subjectsolar radiationeng
dc.subjectmicroalgaeeng
dc.subjectmid-latitudeeng
dc.subjectEuropeeng
dc.subjectthe Baltic stateseng
dc.subjectarticleseng
dc.titleSunlight potential for microalgae cultivation in the mid-latitude region – the Baltic stateseng
dc.typeArticleeng

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2018, Vol. 16, No. 3