Dual purpose microalgae–bacteria-based systems that treat wastewater and produce biodiesel and chemical products within a Biorefinery

Olguín, Eugenia J.

doi:10.1016/j.biotechadv.2012.05.001

Cited by 400 publications

(164 citation statements)

References 134 publications

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“…A microalgae platform can easily fit this concept since each species produces a certain amount of lipids, carbohydrates, proteins, among other by-products, so that biomass can be used for different purposes [152,153]. To date, microalgal biorefinery processes in general have concentrated in carrying out the cultivation of microalgae in wastewater for simultaneous water treatment coupled with biomass generation from the microalga-bacteria consortium, which in turn can be allocated to the production of biofuels [165].…”

Section: Microalgae Biorefinery As An Integral Systemmentioning

confidence: 99%

Microalgae biorefineries: applications and emerging technologies

Giraldo

Romo-Buchelly

Arbeláez-Pérez

et al. 2018

DYNA

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Microalgae transform CO2 into a broad portfolio of biomolecules, and thus should be considered as a valuable biotechnological platform. Despite several research programs and global efforts to establish a sustainable microalgae-based industry, most applications have not transcended academic boundaries. This limitation raises from the high transformation costs when target products are biofuels or fertilizers. Microalgae biorefinery emerges as an alternative to improve economic competitiveness, as Under such a model scope, the process inputs come from industrial waste, while biomass exploitation prioritizes the highest value molecules followed by extraction of less valuable compounds. This review describes a wide range of microalgae exploitation schemes focused on new uses of its constituents, while discussing emerging technologies designed to improve production and efficiencies as well.Keywords: microalgae; biorefinery; biofuels; fertilizers; active biomolecules. Biorefinerías de microalgas: aplicaciones actuales y nuevas tecnologías en desarrolloResumen Las microalgas transforman el CO2 en un amplio portafolio de biomoléculas, por lo cual, son consideradas una valiosa plataforma biotecnológica. A pesar de múltiples programas de investigación y esfuerzos globales para establecer una industria sostenible basada en microalgas, la mayoría de las aplicaciones potenciales no han trascendido las fronteras académicas. Esta limitación se debe a los altos costos en la transformación del producto principalmente cuando se obtiene compuestos económicos como biocombustibles y fertilizantes. La biorefinería de microalgas surge como alternativa para incrementar la competitividad económica. En este modelo, los insumos del proceso provienen de residuos industriales, mientras que la explotación de la biomasa inicia con las moléculas de alto valor y finaliza con los compuestos menos valiosos. En esta revisión se describe un amplio abanico de esquemas de explotación de microalgas enfocado en nuevos usos de sus constituyentes. Además, se exploran las tecnologías emergentes destinadas a aprovechar esta biomasa de una manera más versátil y eficiente.

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Section: Microalgae Biorefinery As An Integral Systemmentioning

confidence: 99%

Microalgae biorefineries: applications and emerging technologies

Giraldo

Romo-Buchelly

Arbeláez-Pérez

et al. 2018

DYNA

View full text Add to dashboard Cite

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“…This type of biorefinery, which produces a variety of products from a single biomass source, may be termed a vertical biorefinery (Milledge 2013b). Although biorefineries could improve the economics of biofuel production (Pires et al 2012) they are likely to be energy intensive (Rawat et al 2013;Olguin 2012), and will involve increased energy inputs, process complexity and possibly reduced energy outputs. A biorefinery plant should operate sustainably with its energy met by biofuels produced (Cherubini 2010).…”

Section: Co-production and Biorefineriesmentioning

confidence: 99%

Methods of energy extraction from microalgal biomass: a review

Milledge

Heaven

2014

Rev Environ Sci Biotechnol

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“…Oilgae (2009), Olguin (2012 and Hossein et al (2014) stated that algae are an important bioremediation agent that is already being used by many wastewater facilities. They added that purpose microalgae-bacteria based systems for treating wastewater.…”

Section: Detection Of Salmonella Spp and E Coli In Vegetablementioning

confidence: 99%

“…Hossein et al (2014) stated that phycoremediation is the process of employing macro or microalgae to reduce the toxic pollutants from the municipal wastewater, which has many advantageous over other conventional methods, as it is low cost and environmental friendly. Olguin (2012) stated that using microalgae in sewage treatment has several advantages such as microalgae are excellent at capturing CO 2 fixation, biodiesel resulted from microalgae is one of the very few biofuels with negative CO 2 emissions. Also, microalgae treat sewage water to make it used in irrigation purposes.…”

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confidence: 99%

Occurrence of Food-born Pathogen in Vegetables Irrigated with Sewage Water and Their Biological Treatment

2015

Egypt. J. Microbiol.

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HE USE of untreated sewage water in irrigation of vegetables …...represents critical problem for the environment and human health. The present study was conducted to assess the extent of bacterial contamination of two vegetables (lettuce and tomato fruits) due to irrigation with sewage water in Belbais, Al-Sharqia Governorate, Egypt. Biological treatment process for the sewage water by two algal spp. (Spirulina platensis and Chlorella vulgaris) at two different concentrations of the algae (2.5ml/ and 10ml/500ml of sewage water) and at two different incubation periods (15 and 21 days) were done. Analysis of sewage and underground water for total coliform, fecal coliform, algae and heavy metals were done. Results showed that sewage water samples were highly contaminated than underground water. Twenty four vegetables samples (lettuce and tomato fruits) were collected from 2 fields, the first was irrigated with sewage water (6 lettuce and 6 tomato fruits samples) and the second with underground water (6 lettuce and 6 tomato samples). All samples were examined for E. coli and Salmonella spp. For lettuce irrigated with sewage 50% of samples were contaminated with E .coli while for tomato irrigated with sewage 66.6 of samples were contaminated with E. coli and Salmonella spp., but the tomato samples irrigated with underground were 33.3 and 50% of samples were contaminated with E. coli and Salmonella spp., respectively. The highest effect of the Spirulina platensis and Chlorella vulgaris to reduce the bacterial count (total coliform and fecal coliform) and to remove Lead (Pb) concentrations almost was of the higher concentrations with long time, while to remove the Cupper (Cu) was at the lower concentrations with the long time for the same algae.

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Dual purpose microalgae–bacteria-based systems that treat wastewater and produce biodiesel and chemical products within a Biorefinery

Cited by 400 publications

References 134 publications

Microalgae biorefineries: applications and emerging technologies

Microalgae biorefineries: applications and emerging technologies

Methods of energy extraction from microalgal biomass: a review

Occurrence of Food-born Pathogen in Vegetables Irrigated with Sewage Water and Their Biological Treatment

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