Repository logo
 
Publication

Aquaculture wastewater treatment through microalgal: biomass potential applications on animal feed, agriculture, and energy

2021-05Journal article Open access
Simple item page
dc.contributor.authorViegas, Catarina
dc.contributor.authorGouveia, Luisa
dc.contributor.authorGonçalves, Maria Margarida
dc.date.accessioned2021-11-25T15:45:16Z
dc.date.available2021-11-25T15:45:16Z
dc.date.issued2021-05
dc.description.abstractABSTRACT: The use of microalgae to remediate raw effluent from brown crab aquaculture was evaluated by performing batch mode growth tests using separately the microalgae Chlorella vulgaris (Cv), Scenedesmus obliquus (Sc), Isochrysis galbana (Ig), Nannocloropsis salina (Ns), and Spirulina major (Sp). Removal efficiencies in batch growth were 100% for total nitrogen and total phosphorus for all microalgae. Chemical oxygen demand (COD) remediations were all above 72%. Biomass productivity varied from 20.9 mg L-1 day- 1 (N. salina) to 146.4 mg L-1 day- 1 (C. vulgaris). The two best performing algae were C. vulgaris and S. obliquus and they were tested in semicontinuous growth, reaching productivities of 879.8 mg L-1 day- 1 and 811.7 mg L-1 day- 1, respectively. The bioremediation of the effluent was tested with a transfer system consisting of three independent containers and compared with the use of a single container. The single container had the same capacity and received weekly the same volume of effluent as the three containers together. The remediation capacity of the 3 containers was much higher than the single one. The supplementation with NaNO3 was tested to improve the nutrient removal microalgae? capacity, with positive results. The removal efficiencies were 100% for total nitrogen and total phosphorus and higher than 96% for COD. The obtained C. vulgaris and S. obliquus biomass were composed of 31 and 35% proteins, 6 and 8% lipids, 39 and 30% carbohydrates, respectively. The composition of these biomass suggest that it can be used as novel and sustainable ingredients in aquaculture feeds. The algal biomass of Cv and Sc were used as biostimulants in the germination of wheat and watercress, and very promising results were attained, with increases in the germination index for Cv and Sc of 175% and 48% in watercress and 84% and 98% in wheat, respectively. The biomasses of Cv and Sc were also subjected to a torrefaction process with 72.5 ? 1.7% char yields. The obtained biochars were tested as biostimulants for germination seeds (wheat and watercress) and as bio-adsorbent of dye solutions.pt_PT
dc.description.versioninfo:eu-repo/semantics/publishedVersionpt_PT
dc.identifier.citationViegas, Catarina... [et.al.] - Aquaculture wastewater treatment through microalgal: biomass potential applications on animal feed, agriculture, and energy. In: Journal of Environmental Management, 2021, Vol. 286, article nº 112187pt_PT
dc.identifier.doi10.1016/j.jenvman.2021.112187pt_PT
dc.identifier.eissn1095-8630
dc.identifier.issn0301-4797
dc.identifier.urihttp://hdl.handle.net/10400.9/3619
dc.language.isoengpt_PT
dc.peerreviewedyespt_PT
dc.publisherElsevierpt_PT
dc.relationLisboa-010247-FEDER-035234pt_PT
dc.relationBiorremediação de efluentes agroindustriais por microalgas e valorização da biomassa algal numa economia circular
dc.relationMechanical Engineering and Resource Sustainability Center
dc.relation.publisherversionhttps://doi.org/10.1016/j.jenvman.2021.112187pt_PT
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/pt_PT
dc.subjectMicroalgaept_PT
dc.subjectBioremediationpt_PT
dc.subjectAquaculture wastewaterpt_PT
dc.subjectBiostimulantpt_PT
dc.subjectAdsorptionpt_PT
dc.titleAquaculture wastewater treatment through microalgal: biomass potential applications on animal feed, agriculture, and energypt_PT
dc.typejournal article
dspace.entity.typePublication
oaire.awardTitleBiorremediação de efluentes agroindustriais por microalgas e valorização da biomassa algal numa economia circular
oaire.awardTitleMechanical Engineering and Resource Sustainability Center
oaire.awardURIinfo:eu-repo/grantAgreement/FCT//SFRH%2FBD%2F131178%2F2017/PT
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/6817 - DCRRNI ID/UIDP%2F04077%2F2020/PT
oaire.citation.titleJournal of Environmental Managementpt_PT
oaire.citation.volume286pt_PT
oaire.fundingStream6817 - DCRRNI ID
person.familyNameViegas
person.familyNameGouveia
person.familyNameGonçalves
person.givenNameCatarina
person.givenNameLuisa
person.givenNameMargarida
person.identifierH-4046-2011
person.identifier.ciencia-id0610-8176-4E0A
person.identifier.ciencia-id581B-924A-84DD
person.identifier.ciencia-idD21C-B32E-4971
person.identifier.orcid0000-0001-9762-9478
person.identifier.orcid0000-0003-0196-6360
person.identifier.orcid0000-0002-0940-519X
person.identifier.scopus-author-id7004135834
person.identifier.scopus-author-id55421400300
project.funder.identifierhttp://doi.org/10.13039/501100001871
project.funder.identifierhttp://doi.org/10.13039/501100001871
project.funder.nameFundação para a Ciência e a Tecnologia
project.funder.nameFundação para a Ciência e a Tecnologia
rcaap.rightsopenAccesspt_PT
rcaap.typearticlept_PT
relation.isAuthorOfPublicationc052aadc-b5e1-4af4-a6e5-7ed0b97dcaba
relation.isAuthorOfPublication63dcbe08-14df-4886-98b7-2945cbe0e062
relation.isAuthorOfPublication7909c77c-01e2-45c8-9506-e078bddada0b
relation.isAuthorOfPublication.latestForDiscoveryc052aadc-b5e1-4af4-a6e5-7ed0b97dcaba
relation.isProjectOfPublicationc1fc4dfb-0901-4883-b079-2d8c531389b3
relation.isProjectOfPublication2bef0389-c5e9-4873-88b3-2d1c5c943b86
relation.isProjectOfPublication.latestForDiscovery2bef0389-c5e9-4873-88b3-2d1c5c943b86

Files

Original bundle
Now showing 1 - 1 of 1
Thumbnail Image
Name:
JournalEnvironmentalManagement_Vol.286_112187.pdf
Size:
1.02 MB
Format:
Adobe Portable Document Format
Download

Collections

UB - Artigos em revistas internacionais