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Algal biomass production and wastewater treatment in high rate algal ponds receiving disinfected effluent

2013Journal article Open access
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dc.contributor.authorSantiago, Aníbal F.
dc.contributor.authorCalijuri, Maria Lucia
dc.contributor.authorAssemany, Paula
dc.contributor.authorCalijuri, Maria do Carmo
dc.contributor.authorReis, Alberto
dc.date.accessioned2014-04-29T10:48:25Z
dc.date.available2014-04-29T10:48:25Z
dc.date.issued2013
dc.description.abstractAlgal biomass production associated with wastewater is usually carried out in high rate algal ponds (HRAPs), which are concomitantly used in the treatment of such effluent. However, most types of wastewater have high levels of bacteria that can inhibit the growth of algal biomass by competing for space and nutrients. The objective of this study was to assess the influence of ultraviolet (UV) pre-disinfection on the performance of HRAPs used for wastewater treatment and algal biomass production. Two HRAPs were tested: one received effluent from an upflow anaerobic sludge blanket (UASB) reactor – HRAP – and the second received UASB effluent pre-disinfected by UV radiation – UVHRAP. Physical, chemical and microbiological parameters were monitored, as well as algal biomass productivity and daily pH and dissolved oxygen (DO) variation. The UVHRAP presented highest DO and pH values, as well as greater percentage of chlorophyll a in the biomass, which indicates greater algal biomass productivity. The average percentages of chlorophyll a found in the biomass obtained from the HRAP and the UVHRAP were 0.95±0.65% and 1.58±0.65%, respectively. However, total biomass productivity was greater in the HRAP (11.4 gVSS m-2 day-1) compared with the UVHRAP (9.3 gVSS m-2 day-1). Mean pH values were 7.7±0.7 in the HRAP and 8.1±1.0 in the UVHRAP, and mean values of DO percent saturation were 87±26% and 112±31% for the HRAP and the UVHRAP, respectively. Despite these differences, removal efficiencies of organic carbon, chemical oxygen demand, ammoniacal nitrogen and soluble phosphorus were statistically equal at the 5% significance level.por
dc.identifier.citationSantiago, A.F.; Calijuri, M.L.; Assemany, P.P.; Calijuri, M.C.; Reis, A. Algal biomass production and wastewater treatment in high rate algal ponds receiving disinfected effluent. In: Environmental Technology, 2013, Vol. 34, nº 13-14, p. 1877-1885por
dc.identifier.issn0959-3330
dc.identifier.urihttp://hdl.handle.net/10400.9/2451
dc.language.isoengpor
dc.publisherTaylor & Francispor
dc.relation.publisherversionhttp://dx.doi.org/10.1080/09593330.2013.812670por
dc.subjectAlgal pondspor
dc.subjectWastewaterpor
dc.subjectUltraviolet disinfectionpor
dc.subjectAlgal biomass productionpor
dc.titleAlgal biomass production and wastewater treatment in high rate algal ponds receiving disinfected effluentpor
dc.typejournal article
dspace.entity.typePublication
oaire.citation.endPage1885por
oaire.citation.startPage1877por
oaire.citation.titleEnvironmental Technologypor
oaire.citation.volume34por
person.familyNameCalijuri
person.familyNamePeixoto Assemany
person.familyNameDelgado dos Reis
person.givenNameMaria Lucia
person.givenNamePaula
person.givenNameAlberto José
person.identifier.ciencia-idE317-E8DB-14E3
person.identifier.orcid0000-0002-0918-2475
person.identifier.orcid0000-0001-7596-7804
person.identifier.orcid0000-0002-1405-9981
person.identifier.ridG-1546-2012
person.identifier.ridE-1248-2014
person.identifier.scopus-author-id57204744399
person.identifier.scopus-author-id55632236000
rcaap.rightsopenAccesspor
rcaap.typearticlepor
relation.isAuthorOfPublication7fdbfb43-51cc-4636-83b4-cefd4befe024
relation.isAuthorOfPublicationf979c643-efca-4ca5-a2a7-77f8dd023a66
relation.isAuthorOfPublicationc54614e6-3203-4478-8b8c-17a33e383487
relation.isAuthorOfPublication.latestForDiscoveryc54614e6-3203-4478-8b8c-17a33e383487

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