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Combined yeast and microalgal cultivation in a pilot-scale raceway pond for urban wastewater treatment and potential biodiesel production.
Water Sci Technol. 2018 Feb; 77(3-4):1062-1071.WS

Abstract

A mixed culture of oleaginous yeast Lipomyces starkeyi and wastewater native microalgae (mostly Scenedesmus sp. and Chlorella sp.) was performed to enhance lipid and biomass production from urban wastewaters. A 400 L raceway pond, operating outdoors, was designed and used for biomass cultivation. Microalgae and yeast were inoculated into the cultivation pond with a 2:1 inoculum ratio. Their concentrations were monitored for 14 continuous days of batch cultivation. Microalgal growth presented a 3-day initial lag-phase, while yeast growth occurred in the first few days. Yeast activity during the microalgal lag-phase enhanced microalgal biomass productivity, corresponding to 31.4 mgTSS m-2 d-1. Yeast growth was limited by low concentrations in wastewater of easily assimilated organic substrates. Organic carbon was absorbed in the first 3 days with a 3.7 mgC L-1 d-1 removal rate. Complete nutrient removal occurred during microalgal linear growth with 2.9 mgN L-1 d-1 and 0.96 mgP L-1 d-1 removal rates. Microalgal photosynthetic activity induced high pH and dissolved oxygen values resulted in natural bactericidal and antifungal activity. A 15% lipid/dry weight was measured at the end of the cultivation time. Fatty acid methyl ester (FAME) analysis indicated that the lipids were mainly composed of arachidic acid.

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Authors+Show Affiliations

Iasimone F
Bioscience and Territory Department, University of Molise, C. da Fonte Lappone, 86090 Pesche (IS), Italy E-mail: floriana.iasimone@unimol.it.
Zuccaro G
Department of Chemical, Materials and Production Engineering, University of Naples Federico II, P. V. Tecchio, 80, 80125 Naples, Italy.
D'Oriano V
Department of Experimental Medicine, University of Study of Campania 'Luigi Vanvitelli', Via Costantinopoli 16, 80138 Naples, Italy.
Franci G
Department of Experimental Medicine, University of Study of Campania 'Luigi Vanvitelli', Via Costantinopoli 16, 80138 Naples, Italy.
Galdiero M
Department of Experimental Medicine, University of Study of Campania 'Luigi Vanvitelli', Via Costantinopoli 16, 80138 Naples, Italy.
Pirozzi D
Department of Chemical, Materials and Production Engineering, University of Naples Federico II, P. V. Tecchio, 80, 80125 Naples, Italy.
De Felice V
Bioscience and Territory Department, University of Molise, C. da Fonte Lappone, 86090 Pesche (IS), Italy E-mail: floriana.iasimone@unimol.it.
Pirozzi F
Civil and Environmental Department, University of Naples Federico II, Via Claudio 21, 80125 Naples, Italy.

MeSH

BiofuelsBiomassChlorellaLipidsLipomycesMicroalgaePilot ProjectsPondsScenedesmusWaste Disposal, FluidWastewater

Pub Type(s)

Journal Article

Language

eng

PubMed ID

29488969

Citation

Iasimone, F, et al. "Combined Yeast and Microalgal Cultivation in a Pilot-scale Raceway Pond for Urban Wastewater Treatment and Potential Biodiesel Production." Water Science and Technology : a Journal of the International Association On Water Pollution Research, vol. 77, no. 3-4, 2018, pp. 1062-1071.
Iasimone F, Zuccaro G, D'Oriano V, et al. Combined yeast and microalgal cultivation in a pilot-scale raceway pond for urban wastewater treatment and potential biodiesel production. Water Sci Technol. 2018;77(3-4):1062-1071.
Iasimone, F., Zuccaro, G., D'Oriano, V., Franci, G., Galdiero, M., Pirozzi, D., De Felice, V., & Pirozzi, F. (2018). Combined yeast and microalgal cultivation in a pilot-scale raceway pond for urban wastewater treatment and potential biodiesel production. Water Science and Technology : a Journal of the International Association On Water Pollution Research, 77(3-4), 1062-1071. https://doi.org/10.2166/wst.2017.620
Iasimone F, et al. Combined Yeast and Microalgal Cultivation in a Pilot-scale Raceway Pond for Urban Wastewater Treatment and Potential Biodiesel Production. Water Sci Technol. 2018;77(3-4):1062-1071. PubMed PMID: 29488969.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Combined yeast and microalgal cultivation in a pilot-scale raceway pond for urban wastewater treatment and potential biodiesel production. AU - Iasimone,F, AU - Zuccaro,G, AU - D'Oriano,V, AU - Franci,G, AU - Galdiero,M, AU - Pirozzi,D, AU - De Felice,V, AU - Pirozzi,F, PY - 2018/3/1/entrez PY - 2018/3/1/pubmed PY - 2018/8/16/medline SP - 1062 EP - 1071 JF - Water science and technology : a journal of the International Association on Water Pollution Research JO - Water Sci Technol VL - 77 IS - 3-4 N2 - A mixed culture of oleaginous yeast Lipomyces starkeyi and wastewater native microalgae (mostly Scenedesmus sp. and Chlorella sp.) was performed to enhance lipid and biomass production from urban wastewaters. A 400 L raceway pond, operating outdoors, was designed and used for biomass cultivation. Microalgae and yeast were inoculated into the cultivation pond with a 2:1 inoculum ratio. Their concentrations were monitored for 14 continuous days of batch cultivation. Microalgal growth presented a 3-day initial lag-phase, while yeast growth occurred in the first few days. Yeast activity during the microalgal lag-phase enhanced microalgal biomass productivity, corresponding to 31.4 mgTSS m-2 d-1. Yeast growth was limited by low concentrations in wastewater of easily assimilated organic substrates. Organic carbon was absorbed in the first 3 days with a 3.7 mgC L-1 d-1 removal rate. Complete nutrient removal occurred during microalgal linear growth with 2.9 mgN L-1 d-1 and 0.96 mgP L-1 d-1 removal rates. Microalgal photosynthetic activity induced high pH and dissolved oxygen values resulted in natural bactericidal and antifungal activity. A 15% lipid/dry weight was measured at the end of the cultivation time. Fatty acid methyl ester (FAME) analysis indicated that the lipids were mainly composed of arachidic acid. SN - 0273-1223 UR - https://www.unboundmedicine.com/medline/citation/29488969/Combined_yeast_and_microalgal_cultivation_in_a_pilot_scale_raceway_pond_for_urban_wastewater_treatment_and_potential_biodiesel_production_ DB - PRIME DP - Unbound Medicine ER -