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Algae biomass cultivation in nitrogen rich biogas digestate.
Mälardalens högskola, Akademin för ekonomi, samhälle och teknik, Framtidens energi.ORCID-id: 0000-0002-4435-4367
Faculty of Science, Universidad Autónoma de Madrid, Ciudad Universitaria de Cantoblanco, Madrid, Spain.
Mälardalens högskola, Akademin för ekonomi, samhälle och teknik, Framtidens energi.ORCID-id: 0000-0001-5480-0167
Mälardalens högskola, Akademin för ekonomi, samhälle och teknik, Framtidens energi.ORCID-id: 0000-0003-3311-9465
2015 (Engelska)Ingår i: Water Science and Technology, ISSN 0273-1223, E-ISSN 1996-9732, Vol. 72, nr 10, s. 1723-1729Artikel i tidskrift (Refereegranskat) Published
Abstract [en]

Because microalgae are known for quick biomass growth and nutrient uptake, there has been much interest in their use in research on wastewater treatment methods. While many studies have concentrated on the algal treatment of wastewaters with low to medium ammonium concentrations, there are several liquid waste streams with high ammonium concentrations that microalgae could potentially treat. The aim of this paper was to test ammonium tolerance of the indigenous algae community of Lake Malaren and to use this mixed consortia of algae to remove nutrients from biogas digestate. Algae from Lake Malaren were cultivated in Jaworski's Medium containing a range of ammonium concentrations and the resulting algal growth was determined. The algae were able to grow at NH4-N concentrations of up to 200 mg L(-1) after which there was significant inhibition. To test the effectiveness of the lake water algae on the treatment of biogas digestate, different pre-cultivation set-ups and biogas digestate concentrations were tested. It was determined that mixing pre-cultivated suspension algae with 25% of biogas digestate by volume, resulting in an ammonium concentration of around 300 mg L(-1), produced the highest algal growth. The algae were effective in removing 72.8 ± 2.2% of NH4-N and 41.4 ± 41.4% of PO4-P.

Ort, förlag, år, upplaga, sidor
2015. Vol. 72, nr 10, s. 1723-1729
Nationell ämneskategori
Miljövetenskap
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URN: urn:nbn:se:mdh:diva-29588DOI: 10.2166/wst.2015.384ISI: 000374290200006PubMedID: 26540532Scopus ID: 2-s2.0-84954566739OAI: oai:DiVA.org:mdh-29588DiVA, id: diva2:872605
Tillgänglig från: 2015-11-19 Skapad: 2015-11-19 Senast uppdaterad: 2017-12-01Bibliografiskt granskad

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Krustok, IvoOdlare, MonicaNehrenheim, Emma

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