No Cover Image

Journal article 217 views 39 downloads

From waste to wealth: coupling different nutritional modes of Scenedesmus obliquus for waste remediation and algal product development

Alla Silkina Orcid Logo, Jose Gayo Pelaez, FLEURIANE FERNANDES, Claudio Fuentes-Grünewald, Rahul Vijay Kapoore, Kam Tang Orcid Logo

Journal of Applied Phycology

Swansea University Authors: Alla Silkina Orcid Logo, Jose Gayo Pelaez, FLEURIANE FERNANDES, Kam Tang Orcid Logo

  • 68668.VOR.pdf

    PDF | Version of Record

    © The Author(s) 2025. Open Access. This article is licensed under a Creative Commons Attribution 4.0 International License (CC-BY 4.0).

    Download (925.1KB)

Check full text

DOI (Published version): 10.1007/s10811-024-03438-0

Abstract

This study exploited the different combinations of nutritional modes (autotrophic, mixotrophic and heterotrophic) of the green alga Scenedesmus obliquus in a two-stage cultivation process to remediate wastes as well as maximise the production of high-protein algal biomass. The alga was first cultiva...

Full description

Published in: Journal of Applied Phycology
ISSN: 0921-8971 1573-5176
Published: Springer Nature 2025
Online Access: Check full text

URI: https://cronfa.swan.ac.uk/Record/cronfa68668
first_indexed 2025-01-10T14:34:19Z
last_indexed 2025-05-02T04:23:25Z
id cronfa68668
recordtype SURis
fullrecord <?xml version="1.0"?><rfc1807><datestamp>2025-05-01T15:10:06.6076345</datestamp><bib-version>v2</bib-version><id>68668</id><entry>2025-01-10</entry><title>From waste to wealth: coupling different nutritional modes of Scenedesmus obliquus for waste remediation and algal product development</title><swanseaauthors><author><sid>216d36449db09ed98c6971a2254a2457</sid><ORCID>0000-0002-1804-8083</ORCID><firstname>Alla</firstname><surname>Silkina</surname><name>Alla Silkina</name><active>true</active><ethesisStudent>false</ethesisStudent></author><author><sid>e680067384fc331cd55536e3ad6f82ea</sid><firstname>Jose</firstname><surname>Gayo Pelaez</surname><name>Jose Gayo Pelaez</name><active>true</active><ethesisStudent>false</ethesisStudent></author><author><sid>a0fd8f03ce00a0c368a8432069a2291c</sid><firstname>FLEURIANE</firstname><surname>FERNANDES</surname><name>FLEURIANE FERNANDES</name><active>true</active><ethesisStudent>false</ethesisStudent></author><author><sid>69af43a3b9da24aef65c5d3a44956fe3</sid><ORCID>0000-0001-9427-9564</ORCID><firstname>Kam</firstname><surname>Tang</surname><name>Kam Tang</name><active>true</active><ethesisStudent>false</ethesisStudent></author></swanseaauthors><date>2025-01-10</date><deptcode>BGPS</deptcode><abstract>This study exploited the different combinations of nutritional modes (autotrophic, mixotrophic and heterotrophic) of the green alga Scenedesmus obliquus in a two-stage cultivation process to remediate wastes as well as maximise the production of high-protein algal biomass. The alga was first cultivated autotrophically in Stage-one, using 0.5% of digestate as a nutrient source and natural light to support the growth; afterward, the culture was concentrated and used in Stage-two cultivation under the different nutritional modes. 2.5% of anaerobic digestate from food waste was used to provide inorganic nutrients; waste sugar recovered from a confectionery manufacturer was used as the organic carbon source to support mixo- and hetero-trophic growth. In Stage-one, the algae removed ammonium and phosphate at 9.1 mg L&#x2212;1 day&#x2212;1 and 3.8 mg L&#x2212;1 day&#x2212;1, respectively, and the algal yield approached a carrying capacity of 1 g dry weight per liter. In Stage-two, the algal population increased faster in mixotrophic and heterotrophic modes, reaching a final dry weight concentration of 7.2&#x2013;10.5 g L&#x2212;1, than in autotrophic mode. Ammonium and phosphate were consumed at about twice the rate as in autotrophic mode, and 90&#x2013;100% of the waste sugar was removed within 48&#x2013;72 h. The final algal biomass had a protein content of 44% in mixotrophic mode, compared to only 32% in autotrophic mode. This study demonstrated that a two-stage cultivation process coupling autotrophic and mixotrophic growth of S. obliquus can be used to remediate both inorganic and organic wastes and boost the production of protein-rich algal biomass, which can be beneficial to a sustainable circular bioeconomy.</abstract><type>Journal Article</type><journal>Journal of Applied Phycology</journal><volume>0</volume><journalNumber/><paginationStart/><paginationEnd/><publisher>Springer Nature</publisher><placeOfPublication/><isbnPrint/><isbnElectronic/><issnPrint>0921-8971</issnPrint><issnElectronic>1573-5176</issnElectronic><keywords>Microalgae; Chlorophyta; Mixotrophy; Waste remediation; Anaerobic digestate; Sugar; Circular economy</keywords><publishedDay>16</publishedDay><publishedMonth>1</publishedMonth><publishedYear>2025</publishedYear><publishedDate>2025-01-16</publishedDate><doi>10.1007/s10811-024-03438-0</doi><url/><notes/><college>COLLEGE NANME</college><department>Biosciences Geography and Physics School</department><CollegeCode>COLLEGE CODE</CollegeCode><DepartmentCode>BGPS</DepartmentCode><institution>Swansea University</institution><apcterm>SU Library paid the OA fee (TA Institutional Deal)</apcterm><funders>This work was funded by the Interreg North West European Regional development fund, project NWE520 ALG-AD.</funders><projectreference/><lastEdited>2025-05-01T15:10:06.6076345</lastEdited><Created>2025-01-10T09:34:53.2806407</Created><path><level id="1">Faculty of Science and Engineering</level><level id="2">School of Biosciences, Geography and Physics - Biosciences</level></path><authors><author><firstname>Alla</firstname><surname>Silkina</surname><orcid>0000-0002-1804-8083</orcid><order>1</order></author><author><firstname>Jose</firstname><surname>Gayo Pelaez</surname><order>2</order></author><author><firstname>FLEURIANE</firstname><surname>FERNANDES</surname><order>3</order></author><author><firstname>Claudio</firstname><surname>Fuentes-Gr&#xFC;newald</surname><order>4</order></author><author><firstname>Rahul Vijay</firstname><surname>Kapoore</surname><order>5</order></author><author><firstname>Kam</firstname><surname>Tang</surname><orcid>0000-0001-9427-9564</orcid><order>6</order></author></authors><documents><document><filename>68668__33503__20267ffeb7e9465d85633e6055bcf77b.pdf</filename><originalFilename>68668.VOR.pdf</originalFilename><uploaded>2025-02-05T13:02:04.9485181</uploaded><type>Output</type><contentLength>947301</contentLength><contentType>application/pdf</contentType><version>Version of Record</version><cronfaStatus>true</cronfaStatus><documentNotes>&#xA9; The Author(s) 2025. Open Access. This article is licensed under a Creative Commons Attribution 4.0 International License (CC-BY 4.0).</documentNotes><copyrightCorrect>true</copyrightCorrect><language>eng</language><licence>http://creativecommons.org/licenses/by/4.0/</licence></document></documents><OutputDurs/></rfc1807>
spelling 2025-05-01T15:10:06.6076345 v2 68668 2025-01-10 From waste to wealth: coupling different nutritional modes of Scenedesmus obliquus for waste remediation and algal product development 216d36449db09ed98c6971a2254a2457 0000-0002-1804-8083 Alla Silkina Alla Silkina true false e680067384fc331cd55536e3ad6f82ea Jose Gayo Pelaez Jose Gayo Pelaez true false a0fd8f03ce00a0c368a8432069a2291c FLEURIANE FERNANDES FLEURIANE FERNANDES true false 69af43a3b9da24aef65c5d3a44956fe3 0000-0001-9427-9564 Kam Tang Kam Tang true false 2025-01-10 BGPS This study exploited the different combinations of nutritional modes (autotrophic, mixotrophic and heterotrophic) of the green alga Scenedesmus obliquus in a two-stage cultivation process to remediate wastes as well as maximise the production of high-protein algal biomass. The alga was first cultivated autotrophically in Stage-one, using 0.5% of digestate as a nutrient source and natural light to support the growth; afterward, the culture was concentrated and used in Stage-two cultivation under the different nutritional modes. 2.5% of anaerobic digestate from food waste was used to provide inorganic nutrients; waste sugar recovered from a confectionery manufacturer was used as the organic carbon source to support mixo- and hetero-trophic growth. In Stage-one, the algae removed ammonium and phosphate at 9.1 mg L−1 day−1 and 3.8 mg L−1 day−1, respectively, and the algal yield approached a carrying capacity of 1 g dry weight per liter. In Stage-two, the algal population increased faster in mixotrophic and heterotrophic modes, reaching a final dry weight concentration of 7.2–10.5 g L−1, than in autotrophic mode. Ammonium and phosphate were consumed at about twice the rate as in autotrophic mode, and 90–100% of the waste sugar was removed within 48–72 h. The final algal biomass had a protein content of 44% in mixotrophic mode, compared to only 32% in autotrophic mode. This study demonstrated that a two-stage cultivation process coupling autotrophic and mixotrophic growth of S. obliquus can be used to remediate both inorganic and organic wastes and boost the production of protein-rich algal biomass, which can be beneficial to a sustainable circular bioeconomy. Journal Article Journal of Applied Phycology 0 Springer Nature 0921-8971 1573-5176 Microalgae; Chlorophyta; Mixotrophy; Waste remediation; Anaerobic digestate; Sugar; Circular economy 16 1 2025 2025-01-16 10.1007/s10811-024-03438-0 COLLEGE NANME Biosciences Geography and Physics School COLLEGE CODE BGPS Swansea University SU Library paid the OA fee (TA Institutional Deal) This work was funded by the Interreg North West European Regional development fund, project NWE520 ALG-AD. 2025-05-01T15:10:06.6076345 2025-01-10T09:34:53.2806407 Faculty of Science and Engineering School of Biosciences, Geography and Physics - Biosciences Alla Silkina 0000-0002-1804-8083 1 Jose Gayo Pelaez 2 FLEURIANE FERNANDES 3 Claudio Fuentes-Grünewald 4 Rahul Vijay Kapoore 5 Kam Tang 0000-0001-9427-9564 6 68668__33503__20267ffeb7e9465d85633e6055bcf77b.pdf 68668.VOR.pdf 2025-02-05T13:02:04.9485181 Output 947301 application/pdf Version of Record true © The Author(s) 2025. Open Access. This article is licensed under a Creative Commons Attribution 4.0 International License (CC-BY 4.0). true eng http://creativecommons.org/licenses/by/4.0/
title From waste to wealth: coupling different nutritional modes of Scenedesmus obliquus for waste remediation and algal product development
spellingShingle From waste to wealth: coupling different nutritional modes of Scenedesmus obliquus for waste remediation and algal product development
Alla Silkina
Jose Gayo Pelaez
FLEURIANE FERNANDES
Kam Tang
title_short From waste to wealth: coupling different nutritional modes of Scenedesmus obliquus for waste remediation and algal product development
title_full From waste to wealth: coupling different nutritional modes of Scenedesmus obliquus for waste remediation and algal product development
title_fullStr From waste to wealth: coupling different nutritional modes of Scenedesmus obliquus for waste remediation and algal product development
title_full_unstemmed From waste to wealth: coupling different nutritional modes of Scenedesmus obliquus for waste remediation and algal product development
title_sort From waste to wealth: coupling different nutritional modes of Scenedesmus obliquus for waste remediation and algal product development
author_id_str_mv 216d36449db09ed98c6971a2254a2457
e680067384fc331cd55536e3ad6f82ea
a0fd8f03ce00a0c368a8432069a2291c
69af43a3b9da24aef65c5d3a44956fe3
author_id_fullname_str_mv 216d36449db09ed98c6971a2254a2457_***_Alla Silkina
e680067384fc331cd55536e3ad6f82ea_***_Jose Gayo Pelaez
a0fd8f03ce00a0c368a8432069a2291c_***_FLEURIANE FERNANDES
69af43a3b9da24aef65c5d3a44956fe3_***_Kam Tang
author Alla Silkina
Jose Gayo Pelaez
FLEURIANE FERNANDES
Kam Tang
author2 Alla Silkina
Jose Gayo Pelaez
FLEURIANE FERNANDES
Claudio Fuentes-Grünewald
Rahul Vijay Kapoore
Kam Tang
format Journal article
container_title Journal of Applied Phycology
container_volume 0
publishDate 2025
institution Swansea University
issn 0921-8971
1573-5176
doi_str_mv 10.1007/s10811-024-03438-0
publisher Springer Nature
college_str Faculty of Science and Engineering
hierarchytype
hierarchy_top_id facultyofscienceandengineering
hierarchy_top_title Faculty of Science and Engineering
hierarchy_parent_id facultyofscienceandengineering
hierarchy_parent_title Faculty of Science and Engineering
department_str School of Biosciences, Geography and Physics - Biosciences{{{_:::_}}}Faculty of Science and Engineering{{{_:::_}}}School of Biosciences, Geography and Physics - Biosciences
document_store_str 1
active_str 0
description This study exploited the different combinations of nutritional modes (autotrophic, mixotrophic and heterotrophic) of the green alga Scenedesmus obliquus in a two-stage cultivation process to remediate wastes as well as maximise the production of high-protein algal biomass. The alga was first cultivated autotrophically in Stage-one, using 0.5% of digestate as a nutrient source and natural light to support the growth; afterward, the culture was concentrated and used in Stage-two cultivation under the different nutritional modes. 2.5% of anaerobic digestate from food waste was used to provide inorganic nutrients; waste sugar recovered from a confectionery manufacturer was used as the organic carbon source to support mixo- and hetero-trophic growth. In Stage-one, the algae removed ammonium and phosphate at 9.1 mg L−1 day−1 and 3.8 mg L−1 day−1, respectively, and the algal yield approached a carrying capacity of 1 g dry weight per liter. In Stage-two, the algal population increased faster in mixotrophic and heterotrophic modes, reaching a final dry weight concentration of 7.2–10.5 g L−1, than in autotrophic mode. Ammonium and phosphate were consumed at about twice the rate as in autotrophic mode, and 90–100% of the waste sugar was removed within 48–72 h. The final algal biomass had a protein content of 44% in mixotrophic mode, compared to only 32% in autotrophic mode. This study demonstrated that a two-stage cultivation process coupling autotrophic and mixotrophic growth of S. obliquus can be used to remediate both inorganic and organic wastes and boost the production of protein-rich algal biomass, which can be beneficial to a sustainable circular bioeconomy.
published_date 2025-01-16T05:53:05Z
_version_ 1835784770245623808
score 11.065414

Similar Items