Use of diluted urine for cultivation of Chlorella vulgaris

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Use of diluted urine for cultivation of Chlorella vulgaris. / Jaatinen, Sanna; Lakaniemi, Aino-Maija; Rintala, Jukka.

In: Environmental Technology, Vol. 37, No. 9, 2016, p. 1159-1170.

Research output: Contribution to journal › Article › Scientific › peer-review

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Jaatinen, Sanna ; Lakaniemi, Aino-Maija ; Rintala, Jukka. / Use of diluted urine for cultivation of Chlorella vulgaris. In: Environmental Technology. 2016 ; Vol. 37, No. 9. pp. 1159-1170.

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@article{386efbe1d3104fb199caa663c000e949,

title = "Use of diluted urine for cultivation of Chlorella vulgaris",

abstract = "Our aim was to study the biomass growth of microalga Chlorella vulgaris using diluted human urine as a sole nutrient source. Batch cultivations (21 days) were conducted in five different urine dilutions (1:25-1:300), in 1:100-diluted urine as such and with added trace elements, and as a reference, in artificial growth medium. The highest biomass density was obtained in 1:100-diluted urine with and without additional trace elements (0.73 and 0.60 g L(-1), respectively). Similar biomass growth trends and densities were obtained with 1:25- and 1:300-diluted urine (0.52 vs. 0.48 gVSS L(-1)) indicating that urine at dilution 1:25 can be used to cultivate microalgal based biomass. Interestingly, even 1:300-diluted urine contained sufficiently nutrients and trace elements to support biomass growth. Biomass production was similar despite pH-variation from < 5 to 9 in different incubations indicating robustness of the biomass growth. Ammonium formation did not inhibit overall biomass growth. At the beginning of cultivation, the majority of the biomass consisted of living algal cells, while towards the end, their share decreased and the estimated share of bacteria and cell debris increased.",

author = "Sanna Jaatinen and Aino-Maija Lakaniemi and Jukka Rintala",

year = "2016",

doi = "10.1080/09593330.2015.1105300",

language = "English",

volume = "37",

pages = "1159--1170",

journal = "Environmental Technology",

issn = "0959-3330",

publisher = "Taylor & Francis",

number = "9",

}

RIS (suitable for import to EndNote) - Download

TY - JOUR

T1 - Use of diluted urine for cultivation of Chlorella vulgaris

AU - Jaatinen, Sanna

AU - Lakaniemi, Aino-Maija

AU - Rintala, Jukka

PY - 2016

Y1 - 2016

N2 - Our aim was to study the biomass growth of microalga Chlorella vulgaris using diluted human urine as a sole nutrient source. Batch cultivations (21 days) were conducted in five different urine dilutions (1:25-1:300), in 1:100-diluted urine as such and with added trace elements, and as a reference, in artificial growth medium. The highest biomass density was obtained in 1:100-diluted urine with and without additional trace elements (0.73 and 0.60 g L(-1), respectively). Similar biomass growth trends and densities were obtained with 1:25- and 1:300-diluted urine (0.52 vs. 0.48 gVSS L(-1)) indicating that urine at dilution 1:25 can be used to cultivate microalgal based biomass. Interestingly, even 1:300-diluted urine contained sufficiently nutrients and trace elements to support biomass growth. Biomass production was similar despite pH-variation from < 5 to 9 in different incubations indicating robustness of the biomass growth. Ammonium formation did not inhibit overall biomass growth. At the beginning of cultivation, the majority of the biomass consisted of living algal cells, while towards the end, their share decreased and the estimated share of bacteria and cell debris increased.

AB - Our aim was to study the biomass growth of microalga Chlorella vulgaris using diluted human urine as a sole nutrient source. Batch cultivations (21 days) were conducted in five different urine dilutions (1:25-1:300), in 1:100-diluted urine as such and with added trace elements, and as a reference, in artificial growth medium. The highest biomass density was obtained in 1:100-diluted urine with and without additional trace elements (0.73 and 0.60 g L(-1), respectively). Similar biomass growth trends and densities were obtained with 1:25- and 1:300-diluted urine (0.52 vs. 0.48 gVSS L(-1)) indicating that urine at dilution 1:25 can be used to cultivate microalgal based biomass. Interestingly, even 1:300-diluted urine contained sufficiently nutrients and trace elements to support biomass growth. Biomass production was similar despite pH-variation from < 5 to 9 in different incubations indicating robustness of the biomass growth. Ammonium formation did not inhibit overall biomass growth. At the beginning of cultivation, the majority of the biomass consisted of living algal cells, while towards the end, their share decreased and the estimated share of bacteria and cell debris increased.

U2 - 10.1080/09593330.2015.1105300

DO - 10.1080/09593330.2015.1105300

M3 - Article

VL - 37

SP - 1159

EP - 1170

JO - Environmental Technology

JF - Environmental Technology

SN - 0959-3330

IS - 9

ER -

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