Journal ArticleDOI
A review on the use of microalgal consortia for wastewater treatment
TLDR
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.read more
Citations
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Journal ArticleDOI
Efficient techniques for the removal of toxic heavy metals from aquatic environment: A review
TL;DR: In this article, the authors provide a sketch about treatment technologies followed by their heavy metal capture capacity from industrial effluent, the treatment performance, their remediation capacity and probable environmental and health impacts were deliberated in this review article.
Journal ArticleDOI
Integrating micro-algae into wastewater treatment: A review
Seyedeh Fatemeh Mohsenpour,Sebastian Hennige,Nicholas Willoughby,Adebayo J. Adeloye,Tony Gutierrez +4 more
TL;DR: A critical account of micro-algae as an important step in wastewater treatment for enhancing the reduction of N, P and the chemical oxygen demand in wastewater, whilst utilising a fraction of the energy demand of conventional biological treatment systems.
Journal ArticleDOI
Cultivating microalgae in wastewater for biomass production, pollutant removal, and atmospheric carbon mitigation; a review.
Ayesha Shahid,Sana Malik,Hui Zhu,Jianren Xu,Muhammad Nawaz,Muhammad Nawaz,Shahid Nawaz,Md. Asraful Alam,Muhammad Aamer Mehmood,Muhammad Aamer Mehmood +9 more
TL;DR: The recent advances in microalgal biotechnology to establish a biorefinery approach to treat wastewater are highlighted and the possible merits, and demerits of phycoremediation are discussed.
Journal ArticleDOI
Use of microalgae based technology for the removal of antibiotics from wastewater: A review
Lijian Leng,Liang Wei,Qin Xiong,Siyu Xu,Wenting Li,Sen Lv,Qian Lu,Liping Wan,Zhiyou Wen,Zhiyou Wen,Wenguang Zhou +10 more
TL;DR: The toxicities of antibiotics on microalgae, the mechanisms of antibiotic removal by micro algae, and the integration ofmicroalgae with other technologies such as ultraviolet irradiation (photocatalysis), advanced oxidation, and complementary microorganism degradation for antibiotic removal were discussed.
Journal ArticleDOI
A review of high value-added molecules production by microalgae in light of the classification.
TL;DR: This work reviews applications of high added value molecules produced from microalgae and proposes to linkmicroalgae phyla and related potential applications through highlighting of which bioactive compounds can be found in which phyla.
References
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Journal ArticleDOI
Microalgae for biodiesel production and other applications: A review
TL;DR: The various aspects associated with the design of microalgae production units are described, giving an overview of the current state of development of algae cultivation systems (photo-bioreactors and open ponds).
Journal ArticleDOI
Biofuels from microalgae—A review of technologies for production, processing, and extractions of biofuels and co-products
TL;DR: In this article, the authors reviewed the technologies underpinning microalgae-to-bio-fuels systems, focusing on the biomass production, harvesting, conversion technologies, and the extraction of useful co-products.
Journal ArticleDOI
Algal–bacterial processes for the treatment of hazardous contaminants: A review
Raúl Muñoz,Benoit Guieysse +1 more
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.
Journal ArticleDOI
Commercial production of microalgae: ponds, tanks, tubes and fermenters
TL;DR: A helical tubular photobioreactor system, the BIOCOIL™, has been developed which allows these algae to be grown reliably outdoors at high cell densities in semi-continuous culture.
Journal ArticleDOI
Nutrient recovery from wastewater streams by microalgae: Status and prospects
Ting Cai,Stephen Y. Park,Yebo Li +2 more
TL;DR: In this paper, the major nutrient components of different wastewater streams, the mechanisms of algal nutrient uptake, nutrient removal performance of various species of microalgae when cultured in wastewater, and current micro-algae production systems are discussed.
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