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20240510232919.0 |
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240415s2024 xx |||||o 00| ||eng c |
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|a 10.1016/j.plaphy.2024.108588
|2 doi
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|a pubmed24n1403.xml
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|a (PII)S0981-9428(24)00256-0
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|a eng
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| 100 |
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|a Mollo, Lorenzo
|e verfasserin
|4 aut
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| 245 |
1 |
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|a Selection of microalgae in artificial digestate
|b Strategies towards an effective phycoremediation
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|c 2024
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|a Text
|b txt
|2 rdacontent
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|a ƒaComputermedien
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|2 rdamedia
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|a ƒa Online-Ressource
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|a Date Completed 09.05.2024
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|a Date Revised 09.05.2024
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|a published: Print-Electronic
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|a Citation Status MEDLINE
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|a Copyright © 2024 The Authors. Published by Elsevier Masson SAS.. All rights reserved.
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|a Digestate is a complex by-product of anaerobic digestion and its composition depends on the digestor inputs. It can be exploited as a sustainable source of nutrients for microalgae cultivation but its unbalanced composition and toxic elements make the use challenging. Screening algae in a simplified synthetic digestate which mimics the main nutrient constraints of a real digestate is proposed as a reproducible and effective method to select suitable species for real digestate valorisation and remediation. Growth performance, nutrient removal and biomass composition of eight microalgae exposed to high amounts of NH4+, PO4- and organic-C were assessed. Using a score matrix, A. protothecoides, T. obliquus, C. reinhardtii, and E. gracilis were identified as the most promising species. Thus, three strategies were applied to improve outcomes: i) establishment of an algal consortium to improve biomass production, ii) K+ addition to the medium to promote K+ uptake over NH4+ and to reduce potential NH4+ toxicity, iii) P starvation as pretreatment for enhanced P removal by luxury uptake. The consortium was able to implement a short-term response displaying higher biomass production than single species (3.77 and 1.03-1.89 mg mL-1 respectively) in synthetic digestate while maintaining similar nutrient remediation, furthermore, its growth rate was 1.6 times higher than in the control condition. However, the strategies aiming to reduce NH4+ toxicity and higher P removal were not successful except for single cases. The proposed algal screening and the resulting designed consortium were respectively a reliable method and a powerful tool towards sustainable real digestate remediation
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|a Journal Article
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|a Algal physiology
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|a Ammonium toxicity
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|a Digestate remediation
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|a Microalgae consortium
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|a Screening
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|a Phosphorus
|2 NLM
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|a 27YLU75U4W
|2 NLM
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| 700 |
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|a Petrucciani, Alessandra
|e verfasserin
|4 aut
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| 700 |
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|a Norici, Alessandra
|e verfasserin
|4 aut
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| 773 |
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|i Enthalten in
|t Plant physiology and biochemistry : PPB
|d 1991
|g 210(2024) vom: 23. Mai, Seite 108588
|w (DE-627)NLM098178261
|x 1873-2690
|7 nnns
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|g volume:210
|g year:2024
|g day:23
|g month:05
|g pages:108588
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|u http://dx.doi.org/10.1016/j.plaphy.2024.108588
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