Capability of different microalgae species for phytoremediation processes: Wastewater tertiary treatment, CO2 bio-fixation and low cost biofuels production

Arbib, Zouhayr; Ruiz, Jorge; Álvarez-Díaz, Pablo; Garrido-Pérez, Carmen; Perales, José A.

doi:10.1016/j.watres.2013.10.036

Cited by 238 publications

(99 citation statements)

References 36 publications

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“…Water bodies exposed to constant wastewater discharges are a good source of microalgae adapted to changing environments and are thus useful for the removal process, and biomass and biodiesel production (Arbib et al, 2014). The goal of this work was to isolate and identify a microalga from natural environments, assess its ability to remove nitrogen and phosphorus concentrations in different synthetic and real wastewaters, and relate this removal with biomass production in order to facilitate future exploitation for other uses (example: lipids, pigments, aquaculture, etc.…”

Section: Introductionmentioning

confidence: 99%

Remoción de nitrógeno, fósforo y producción de biomasa de Scenedesmus sp en agua residual domestica

Acevedo

Pino

Peñuela

2017

IyC

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Domestic wastewater (DW) has been used as a substrate for both microalgae biomass production and nutrient removal. Biological treatment with photosynthetic microalgae provides aeration, reducing operating costs and the risk of volatilization of contaminants. It also provides oxygen to the bacteria for degradation of organic compounds. In this study, a microalga was isolated and identified as Scenedesmus sp. An experimental trial was performed using synthetic wastewater with different concentrations of N (40, 90 and 150 mg/L) and P (4, 15 and 50 mg/L). Each assay was inoculated with 1x10 6 cells/ml under 16h of continuous light at 50-µmol m -2 s -1 at and 120 rpm for 7 days. Samples were taken at 0, 3, 5 and 7 days to determine the growth of microalgae and the concentration of nitrates, ammonium and phosphorus. The same treatment was carried out using real DW. Synthetic water of low and medium concentration had higher removal percentages. These were between 50 and 60 for nitrogen and 40 and 70 for phosphorus, with a maximum growth of 1x10 7 cells /ml. For real DW, the removal was 65% for phosphorus and 80% for nitrogen. These results suggest Scenedesmus sp could be used to treat DW, enhancing nutrient removal and obtaining biomass for other purposes.Keywords: Biomass, microalgae, nutrients, wastewater. ResumenLas aguas residuales domésticas se han utilizado como sustrato para la producción de biomasa de microalgas y eliminación de nutrientes. El tratamiento biológico con microalgas fotosintéticas proporciona aireación, reduciendo los costos de operación, el riesgo de volatilización de los contaminantes y proporciona oxígeno a las bacterias para la degradación de compuestos orgánicos. En este estudio se aisló una microalga a partir de aguas naturales y fue identificada como Scenedesmus sp. Se realizó un diseño experimental usando agua residual sintética con diferentes concentraciones de nitrógeno (40, 90 y 150 mg / L), fósforo (4, 15 y 50 mg / L) y la microalga aislada. Cada ensayo se inoculó con 1x10 6 células/ml bajo 16 horas de iluminación a 50-µmol m -2 s -1 por 7 días a 120 rpm. Se tomaron muestras a 0, 3, 5 y 7 días para determinar el crecimiento de microalgas y la concentración de nitratos, amonio y fósforo. El mismo tratamiento se realizó utilizando agua residual domestica real. Las aguas sintéticas de baja y media concentración tuvieron mayores porcentajes de remoción, entre 50-60% para el nitrógeno y 40-70% para el fósforo, con un crecimiento máximo de 1x10 7 células/ml. En el agua residual real, la remoción fue del 65% para el fósforo y el 80% para el nitrógeno. Estos resultados sugieren Scenedesmus sp podría ser utilizada para tratar agua residual doméstica, mejorando la eliminación de nutrientes y obteniendo biomasa para otros fines.

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Section: Introductionmentioning

confidence: 99%

Remoción de nitrógeno, fósforo y producción de biomasa de Scenedesmus sp en agua residual domestica

Acevedo

Pino

Peñuela

2017

IyC

View full text Add to dashboard Cite

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“…Tertiary wastewater can also be efficiently treated using microalgae. Three strains (Scenedesmus obliquus, Chlorella vulgaris, Chlorella kessleri) and a natural bloom were successfully grown on a treated wastewater submitted to pretreatment, primary settling, activated sludge and secondary settling [31]. The treated water could then meet the most restrictive currently imposed water regulation (European Directive 98/15/CE).…”

Section: Urban Wastewater Treatmentmentioning

confidence: 99%

The Environmental Biorefinery: Using Microalgae to Remediate Wastewater, a Win-Win Paradigm

et al. 2016

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Abstract:Microalgae have been shown to be a source of multiple bio-based products ranging from high value molecules to commodities. Along with their potential to produce a large variety of products, microalgae can also be used for the depollution of wastewaters of different origins (urban, industrial, and agricultural). This paper is focused on the importance of harnessing the bioremediation capacity of microalgae to treat wastewaters in order to develop the microalgae industry (especially the microalgae biofuel industry) and to find other alternatives to the classic wastewater treatment processes. The current research on the potential of microalgae to treat a specific wastewater or a targeted pollutant is reviewed and discussed. Then, both strategies of selecting the best microalgae strain to treat a specific wastewater or pollutant and using a natural or an artificial consortium to perform the treatment will be detailed. The process options for treating wastewaters using microalgae will be discussed up to the final valorization of the biomass. The last part is dedicated to the challenges which research need to address in order to develop the potential of microalgae to treat wastewaters.

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“…Fig . 2 shows the comparison between the collected experimental data in comparing with mathematical modeling [32]. Each of specific growth rates of the concentrations can be calculated and obtained during the exponential phase of the microalgae growth by drawing a straight line that touched at least three or more points in Fig.…”

Section: Cell Growth Of Scenedesmus Sp In Industrial Meat Food Procementioning

confidence: 99%

Preliminary Assessment of Growth Rates on Different Concentration of Microalgae Scenedesmus sp. in Industrial Meat Food Processing Wastewater

et al. 2017

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Abstract. This study is aimed to evaluate and access the growth rates and biomass productivity in different concentrations of microalgae Scenedesmus sp. using Industrial Meat Food Processing Wastewater as a media. The focus of this study is to determine the best concentrations of microalgae Scenedesmus sp. in raw wastewater in terms of kinetics of cells growth rates. The study verified that concentration of 1x10 6 cells/ml of microalgae gives the highest specific growth rates of biomass at 0.4488 day-1 and 1720 cells/ml/day compare to the other concentrations, while the lowest occurred at concentration of 1x10 3 cells/ml at 0.4108 day -1 and 14.9 cells/ml/day. The result shows the different concentration of microalgae Scenedesmus sp. culturing in Industrial Food Processing Wastewater influence the cells growth of biomass and the optimum were obtained at concentration of 1x10 6 cells/ml which suggested use for Industrial Meat Food Processing Wastewater Treatment purposed. With this finding, it should be seemly to adopt and applied efficiently in treating the wastewater especially for Scenedesmus sp. type of microalgae.

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Capability of different microalgae species for phytoremediation processes: Wastewater tertiary treatment, CO2 bio-fixation and low cost biofuels production

Cited by 238 publications

References 36 publications

Remoción de nitrógeno, fósforo y producción de biomasa de Scenedesmus sp en agua residual domestica

Remoción de nitrógeno, fósforo y producción de biomasa de Scenedesmus sp en agua residual domestica

The Environmental Biorefinery: Using Microalgae to Remediate Wastewater, a Win-Win Paradigm

Preliminary Assessment of Growth Rates on Different Concentration of Microalgae Scenedesmus sp. in Industrial Meat Food Processing Wastewater

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