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Journal ArticleDOI

Municipal wastewater treatment and biomass accumulation with a wastewater-born and settleable algal-bacterial culture

01 May 2011-Water Research (Water Res)-Vol. 45, Iss: 11, pp 3351-3358
TL;DR: A wastewater-born and settleable algal-bacterial culture, cultivated in a stirred tank photobioreactor under lab conditions, was used to remove the carbon and nutrients in municipal wastewater and accumulate biomass simultaneously and offers new information on further usage of biomass accumulated during treatment.
About: This article is published in Water Research.The article was published on 2011-05-01. It has received 332 citations till now. The article focuses on the topics: Photobioreactor & Phosphorus metabolism.
Citations
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Journal ArticleDOI
TL;DR: The challenges and possible solutions for flocculation are overviewed, which are seen as a promising low-cost harvesting method for flocculating microalgae.

751 citations

Journal ArticleDOI
TL;DR: An updated review of the literature regarding the application of microalgal consortia in the remediation of wastewaters from different sources is provided, focusing on the mechanisms involved in nutrients removal by microalgae and the main interactions established between the microorganisms integrating the Consortia and how they can influence nutrients removal efficiencies.
Abstract: The development of anthropogenic activities has led to an excessive disposal of wastes into water bodies, thus reducing water quality and damaging aquatic ecosystems. To avoid the negative impacts associated to the discharge of wastes into water courses, effective remediation processes are required to reduce nitrogen and phosphorus concentrations in discharged effluents. Current methodologies applied for nutrients removal tend to be complex, expensive and energy demanding. Therefore, cultivation of microalgae has appeared as an emerging alternative for nutrients removal from wastewaters. These photosynthetic microorganisms require large amounts of nitrogen and phosphorus for their growth. However, since it is very difficult to maintain pure cultures of these microorganisms in wastewater treatment processes, several studies have reported the use of natural and artificial microalgal consortia composed exclusively by microalgae or by microalgae and bacteria. The use of these consortia in the remediation of wastewaters can be very advantageous because: (i) cooperative interactions between the co-cultivated microorganisms can occur, enhancing the overall uptake of nutrients; and (ii) these systems tend to be more resistant to environmental conditions oscillations. This study provides an updated review of the literature regarding the application of microalgal consortia in the remediation of wastewaters from different sources, focusing on the mechanisms involved in nutrients removal by microalgae and the main interactions established between the microorganisms integrating the consortia and how they can influence nutrients removal efficiencies.

457 citations

Journal ArticleDOI
TL;DR: An integrated approach, which combined freshwater microalgae Chlorella zofingiensis cultivation with piggery wastewater treatment, was investigated, where the advantageous nutrient removal and the highest productivities of biomass, lipid and biodiesel were presented.

443 citations

Journal ArticleDOI
TL;DR: The present review examines the current status of research on the consortia, and emphasizes the construction of Consortia with desired partners to serve a dual mission of pollutant removal and commercial production of microbial metabolites.

379 citations


Cites background from "Municipal wastewater treatment and ..."

  • ...obliquus and four oil-degrading bacteria was stable after 3 cycles of crude oil degradation, each cycle lasting for 8 days (Su et al., 2011)....

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Journal ArticleDOI
TL;DR: An overview of microalgae strains commonly used for wastewater treatment, physical and chemical properties of various wastewaters and their suitability for algae cultivation, factors affecting algae growth, nutrient assimilation/removal and biomass productivity are provided.

365 citations

References
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Journal ArticleDOI
TL;DR: It is possible to use microalgae to produce the O(2) required by acclimatized bacteria to biodegrade hazardous pollutants such as polycyclic aromatic hydrocarbons, phenolics, and organic solvents when proper methods for algal selection and cultivation are used.

1,331 citations


"Municipal wastewater treatment and ..." refers background in this paper

  • ...All rights reserved from bacterial respiration (Oswald, 1988), which provides a cheaper and safer alternative to mechanical aeration and contributes to CO2 mitigation (Guieysse et al., 2002; Munoz and Guieysse, 2006)....

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Journal ArticleDOI
TL;DR: The use of immobilized microalgae in these processes is very adequate and offers significant advantages in bioreactors and the future of this area of algal cell biotechnology is considered.
Abstract: This presentation comprises a review on the use of immobilized algae for wastewater nitrogen, phosphorus and metal removal purposes. Details of the use of immobilized algae, the techniques of immobilization and the effects of immobilization on cell function are included. Particularly relevant in their use for heavy metal removal from wastewaters; upon enriching the biomass in metal, can be recoverd, thereby providing economic advantages. The use of immobilized microalgae in these processes is very adequate and offers significant advantages in bioreactors. The future of this area of algal cell biotechnology is considered.

554 citations


"Municipal wastewater treatment and ..." refers background in this paper

  • ...…concept of algal-bacterial culture as an engineered system in domestic and industrial wastewater treatment has experienced increased momentum over the past few years (Bordel et al., 2009; de-Bashan et al., 2002; Garcia et al., 2000; Gutzeit et al., 2005; Medina and Neis, 2007; Munoz et al., 2005)....

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Journal ArticleDOI
TL;DR: Current uses of immobilized microalgae include metabolite production, culture collection handling, obtaining of energy and removing of undesired or valuable substances from media (nutrients, metals and different pollutant agents).

411 citations


"Municipal wastewater treatment and ..." refers background in this paper

  • ...The sedimentation was the characteristic of the cultivated algal-bacterial culture and not dependent on any immobilization medium which was inefficient over long time operation (Mallick, 2002; Moreno-Garrido, 2008)....

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Journal ArticleDOI
TL;DR: The stabilization of organic matter in sewage wastes requires oxygen, which in secondary treatment plants is normally obtained from the atmosphere as mentioned in this paper, and the primary source of atmospheric oxygen is photo-oxygen.
Abstract: The stabilization of organic matter in sewage wastes requires oxygen, which in secondary treatment plants is normally obtained from the atmosphere. The primary source of atmospheric oxygen is photo...

364 citations


"Municipal wastewater treatment and ..." refers background in this paper

  • ...The ON might be made of a small amount of inseparable organic matter produced during algae growth and wastewater treatment processes Oswald and Gotass, 1957....

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  • ...Oswald also inferred that, under optimal operating conditions (e.g., sufficient light intensity and a proper bioreactor configuration), almost all the available ammonia nitrogen appeared in the form of algal cell material (Oswald and Gotass, 1957)....

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Journal ArticleDOI
TL;DR: It is proposed that coimmobilization of a microalga with microalgae growth-promoting bacteria can serve as a tool in devising novel wastewater treatments.

356 citations


"Municipal wastewater treatment and ..." refers background in this paper

  • ...…concept of algal-bacterial culture as an engineered system in domestic and industrial wastewater treatment has experienced increased momentum over the past few years (Bordel et al., 2009; de-Bashan et al., 2002; Garcia et al., 2000; Gutzeit et al., 2005; Medina and Neis, 2007; Munoz et al., 2005)....

    [...]