Recycling of food waste as nutrients in Chlorella vulgaris cultivation

Lau, Kin Yan; Pleißner, Daniel; Lin, Carol Sze Ki

doi:10.1016/j.biortech.2014.07.096

Cited by 86 publications

(21 citation statements)

References 28 publications

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“…The greater nitrogen removal efficiency, compared to that of phosphorus, was a consequence of the nutrients being in adequate proportions, as previously reported (Olguín et al, 2012). Nutrient removal efficiencies usually vary as a function of operational conditions; thus values of 90% and 80% for nitrogen and phosphorus, respectively, were reported using Chlorella in primary-settled sewage wastewater (Lau et al, 2014); whereas phosphorus removal from urban wastewater was 80% for C.…”

Section: Removal Capacitymentioning

confidence: 53%

Wastewater treatment using microalgae: how realistic a contribution might it be to significant urban wastewater treatment?

Acién

Gómez-Serrano

Morales-Amaral

et al. 2016

Appl Microbiol Biotechnol

251

139

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Microalgae have been proposed as an option for wastewater treatment since the 1960's but still this technology has not been expanded to an industrial scale. In this paper, the major factors limiting the performance of these systems are analysed. The composition of the wastewater is highly relevant, and especially the presence of pollutants such as heavy metals and emerging compounds. Biological and engineering aspects are also critical and have to be improved to at least approximate the performance of conventional systems, not just in terms of capacity and efficiency but also in terms of robustness. Finally, the harvesting of the biomass and its processing into valuable products poses a challenge; yet at the same time, an opportunity exists to increase economic profitability. Land requirement is a major bottleneck that can be ameliorated by improving the system's photosynthetic efficiency. Land requirement has a significant impact on the economic balance but the profits from the biomass produced can enhance these systems' reliability, especially in small cities.3

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Section: Removal Capacitymentioning

confidence: 53%

Wastewater treatment using microalgae: how realistic a contribution might it be to significant urban wastewater treatment?

Acién

Gómez-Serrano

Morales-Amaral

et al. 2016

Appl Microbiol Biotechnol

251

139

View full text Add to dashboard Cite

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“…Using centrate as the culture medium, nutrient removal efficiencies of 11 and 45 % for nitrogen and phosphorus, respectively, have been reported with Chlorella (Min et al 2012), whereas using N. oleoabundans, ammonium removal was 90-95 % (Levine et al 2011;Yang et al 2011). Using primary-settled sewage, up to 90 % of the nitrogen content and 80 % of the phosphorus content was removed with C. vulgaris (Lau et al 2014). In comparison, using urban wastewater, the removal of phosphorus was 80 % for C. vulgaris and 83 % for S. obliquus (RuizMarin et al 2010).…”

Section: Discussionmentioning

confidence: 95%

Utilization of secondary-treated wastewater for the production of freshwater microalgae

Gómez-Serrano

Morales-Amaral

Acién

et al. 2015

Appl Microbiol Biotechnol

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In this work, we studied the potential use of secondary-treated wastewater as nutrient source in the production of freshwater microalgae strains. Experiments were performed indoors in a semicontinuous mode, at 0.3 day(-1), simulating outdoor conditions. We demonstrated that all the tested strains can be produced by using only secondary-treated wastewater as the nutrient source. The utilization of secondary-treated wastewater imposes nutrient-limiting conditions, with maximal biomass productivity dropping to 0.5 g l(-1) day(-1) and modifies the biochemical composition of the biomass by increasing the amount of lipids and carbohydrates while reducing the biomass protein content. We measured fatty acid content and productivity of up to 25 %d.wt. and 110 mg l(-1) day(-1), respectively. We demonstrated that all the tested strains were capable of completely removing the nitrogen and phosphorus contained in the secondary-treated wastewater, and while the use of this effluent reduced the cells' photosynthetic efficiency, the nitrogen and phosphorus coefficient yield increased. Muriellopsis sp. and S. subpicatus were selected as the most promising strains for outdoor production using secondary-treated wastewater as the culture medium; this was not only because of their high productivity but also their photosynthetic efficiency, of up to 2.5 %, along with nutrient coefficient yields of up to 96 gbiomass gN (-1) and 166 gbiomass gP (-1). Coupling microalgae production processes to tertiary treatment in wastewater treatment plants make it possible to recover nutrients contained in the water and to produce valuable biomass, especially where nutrient removal is required prior to wastewater discharge.

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“…Este comportamiento coincide con lo reportado en otros estudios realizados con efluentes provenientes de industrias de procesamiento de lácteos, de hidrolizados alimenticios y pescadería [10,[15][16][17]. El medio de cultivo utilizado, tiene una influencia marcada sobre el crecimiento celular.…”

Section: Discusionesunclassified

Producción de pigmentos por Aphanothece microscópica Nageli a partir de residuos industriales lácteos

Streit

Ramírez-Mérida

Zepka

et al. 2017

Ingeniare. Rev. chil. ing.

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RESUMENLos sistemas basados en el uso de microalgas para la obtención de bioproductos son considerados un área prometedora para aplicaciones industriales. El objetivo del trabajo fue evaluar la producción de ficobiliproteínas y clorofila-a cuando Aphanothece microscopica Nägeli es cultivada en sistemas autotróficos y heterotróficos. Para ello, se desarrollaron sistemas de cultivos heterotróficos (en ausencia de luz) y autotróficos (2 klux de intensidad luminosa) en biorreactores a pH 7,6, 20 ºC, 1 vvm de aireación, empleando como medios de cultivo un efluente de industria láctea con relación C/N 20 y N/P 10, y BG11. Inóculo inicial 200 mg/L. Se efectuó el monitoreo de concentraciones de clorofila-a y ficobiliproteinas en fase logarítmica y estacionaria. Se observaron las mayores concentraciones de pigmento en la fase logarítmica: mayores concentraciones de clorofila-a en cultivos autotróficos y predominio de aloficocianina y ficoeritrina en cultivos heterotróficos. Los resultados mostraron el efecto de las variables en estudio para la producción de pigmentos, en la fase de crecimiento logarítmico, lo que indica la posibilidad de producir en sistemas heterotróficos de Aphanothece microscopica Nägeli, aproximadamente 3.185 ton/ año de biomasa, para 3.127 kg/año clorofila, 232.825 kg/año ficocianina, 47.775 kg/año aloficocianina y 7.008 kg/año ficoeritrina, cuando se utiliza efluente de industria láctea como medio de cultivo.Palabras clave: Biorrefinería, cianobacterias, clorofila, efluentes lácteos, ficobiliproteína. ABSTRACTThe systems that use microalgae to obtain bioproducts are considered a promising area for industrial applications. The objective of this work was to evaluate the production of phycobiliproteins and chlorophyll-a by Aphanothece microscopica Nägeli, when it is cultivated in autotrophic and heterotrophic systems. Thus, the cultures were grown in heterotrophic (absence of light) and autotrophic (2 klux of light intensity) system, in bioreactors at pH 7.6, 20 ºC, 1 vvm aeration, using a dairy industry effluent, with C/N 20 and N/P 10, and BG11 as

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Recycling of food waste as nutrients in Chlorella vulgaris cultivation

Cited by 86 publications

References 28 publications

Wastewater treatment using microalgae: how realistic a contribution might it be to significant urban wastewater treatment?

Wastewater treatment using microalgae: how realistic a contribution might it be to significant urban wastewater treatment?

Utilization of secondary-treated wastewater for the production of freshwater microalgae

Producción de pigmentos por Aphanothece microscópica Nageli a partir de residuos industriales lácteos

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