Advances in algal-prokaryotic wastewater treatment: A review of nitrogen transformations, reactor configurations and molecular tools

Wang, Meng; Keeley, Ryan F.; Zalivina, Nadezhda; Halfhide, Trina; Scott, Kathleen M.; Zhang, Qiong; Steen, Peter; Ergas, Sarina J.

doi:10.1016/j.jenvman.2018.04.021

Cited by 54 publications

(31 citation statements)

References 143 publications

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“…In more recent articles, the interactions between microalgae and prokaryotes in wastewater treatment are described [73][74][75][76][77][78][79][80]. Garcia et al evaluated the performance of two photobioreactors operating with microalgae-bacteria and purple photosynthetic bacteria consortia during the treatment of diluted piggery wastewater [73].…”

Section: Manufacturing Of Biomoleculesmentioning

confidence: 99%

Photoautotrophs–Bacteria Co-Cultures: Advances, Challenges and Applications

et al. 2021

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Photosynthetic microorganisms are among the fundamental living organisms exploited for millennia in many industrial applications, including the food chain, thanks to their adaptable behavior and intrinsic proprieties. The great multipotency of these photoautotroph microorganisms has been described through their attitude to become biofarm for the production of value-added compounds to develop functional foods and personalized drugs. Furthermore, such biological systems demonstrated their potential for green energy production (e.g., biofuel and green nanomaterials). In particular, the exploitation of photoautotrophs represents a concrete biorefinery system toward sustainability, currently a highly sought-after concept at the industrial level and for the environmental protection. However, technical and economic issues have been highlighted in the literature, and in particular, challenges and limitations have been identified. In this context, a new perspective has been recently considered to offer solutions and advances for the biomanufacturing of photosynthetic materials: the co-culture of photoautotrophs and bacteria. The rational of this review is to describe the recently released information regarding this microbial consortium, analyzing the critical issues, the strengths and the next challenges to be faced for the intentions attainment.

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Section: Manufacturing Of Biomoleculesmentioning

confidence: 99%

Photoautotrophs–Bacteria Co-Cultures: Advances, Challenges and Applications

et al. 2021

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“…For example, oxygen can be supplied by using bioreactors growing a consortium of algae and bacteria. Combinations of algae and bacteria have been used to treat wastewater with the algae providing the dissolved oxygen requirements for aerobic digestion and nitrification processes carried out by the bacteria [ 85 ]. Engineers working with biologist will be needed to design optimal bioreactors.…”

Section: Future Directionsmentioning

confidence: 99%

Bio-production of gaseous alkenes: ethylene, isoprene, isobutene

Wilson

Gering

Pinard

et al. 2018

Biotechnol Biofuels

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To reduce emissions from petrochemical refinement, bio-production has been heralded as a way to create economically valuable compounds with fewer harmful effects. For example, gaseous alkenes are precursor molecules that can be polymerized into a variety of industrially significant compounds and have biological production pathways. Production levels, however, remain low, thus enhancing bio-production of gaseous petrochemicals for chemical precursors is critical. This review covers the metabolic pathways and production levels of the gaseous alkenes ethylene, isoprene, and isobutene. Techniques needed to drive production to higher levels are also discussed.

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“…Within this context, in recent years, microalgal-bacteria consortia have gained increasing attention as they are able to produce an ideal selfsustaining system that treat wastewater with high ammonium removal efficiency (Subashchandrabose et al, 2011;Liu et al, 2017;Wang et al, 2018). Although both microalgae and cyanobacteria (hereafter referred to as microalgae) are able to utilize various forms of nitrogen, with ammonium being preferred (Krustok e al., 2016;Wang et al, 2016), this direct uptake of nitrogen is not enough to obtain a removal efficiency above 90-95% in municipal wastewater with competitive HRT (Hydraulic retention Time) with respect to activated sludge (Judd et al, 2015).…”

Section: Introductionmentioning

confidence: 99%

How suspended solids concentration affects nitrification rate in microalgal-bacterial photobioreactors without external aeration

Foladori

Petrini

Andreottola

2020

Heliyon

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The use of microalgae for the treatment of municipal wastewater makes possible to supply oxygen and save energy, but must be coupled with bacterial nitrification to obtain nitrogen removal efficiency above 90%. This paper explores how the concentration of Total Suspended Solids (TSS, from 0.2 to 3.9 g TSS/L) affects the nitrification kinetic in three microalgal-bacterial consortia treating real municipal wastewater. Two different behaviors were observed: (1) solid-limited kinetic at low TSS concentrations, (2) light-limited kinetic at higher concentrations. For each consortium, an optimal TSS concentration that produced the maximum volumetric ammonium removal rate (around 1.8-2.0 mg N L À1 h À1 ), was found. The relationship between ammonium removal rate and TSS concentration was then modelled considering bacteria growth, microalgae growth and limitation by dissolved oxygen and light intensity. Assessment of the optimal TSS concentrations makes possible to concentrate the microbial biomass in a photobioreactor while ensuring high kinetics and a low footprint.

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Advances in algal-prokaryotic wastewater treatment: A review of nitrogen transformations, reactor configurations and molecular tools

Cited by 54 publications

References 143 publications

Photoautotrophs–Bacteria Co-Cultures: Advances, Challenges and Applications

Photoautotrophs–Bacteria Co-Cultures: Advances, Challenges and Applications

Bio-production of gaseous alkenes: ethylene, isoprene, isobutene

How suspended solids concentration affects nitrification rate in microalgal-bacterial photobioreactors without external aeration

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