Towards a luxury uptake process via microalgae – Defining the polyphosphate dynamics

Powell, Nicola; Shilton, Andy; Chisti, Yusuf; Pratt, Steven

doi:10.1016/j.watres.2009.06.011

Cited by 301 publications

(169 citation statements)

References 19 publications

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“…P is an essential nutrient for algal growth and under certain conditions, algae will uptake P in excess of growth requirements (Larsdotter, 2006;Powell et al, 2009). Under such circumstances, P is taken up as orthophosphate and stored as polyphosphate granules for use as a growth reserve for when there is a lack of P in the environment (see Figure 4).…”

Section: Mechanisms Of Algal P Removalmentioning

confidence: 99%

“…However, much of the work done to understand the metabolism of P by algae has been related to waste stabilization ponds. Within these contexts, only 15-30% P-removal is reported with significant variations as a function of temperature (Powell et al, 2009), which is unacceptable for targeted P-removal, especially for temperate or cooler climates.…”

Section: Mechanisms Of Algal P Removalmentioning

confidence: 99%

See 1 more Smart Citation

A Review of Phosphorus Removal Technologies and Their Applicability to Small-Scale Domestic Wastewater Treatment Systems

Bunce

Ndam

Ofiţeru

et al. 2018

Front. Environ. Sci.

401

204

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The removal of phosphorus (P) from domestic wastewater is primarily to reduce the potential for eutrophication in receiving waters, and is mandated and common in many countries. However, most P-removal technologies have been developed for use at larger wastewater treatment plants that have economies-of-scale, rigorous monitoring, and in-house operating expertise. Smaller treatment plants often do not have these luxuries, which is problematic because there is concern that P releases from small treatment systems may have greater environmental impact than previously believed. Here P-removal technologies are reviewed with the goal of determining which treatment options are amenable to small-scale applications. Significant progress has been made in developing some technologies for small-scale application, namely sorptive media. However, as this review shows, there is a shortage of treatment technologies for P-removal at smaller scales, particularly sustainable and reliable options that demand minimal operating and maintenance expertise or are suited to northern latitudes. In view of emerging regulatory pressure, investment should be made in developing new or adapting existing P-removal technologies, specifically for implementation at small-scale treatment works.

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Section: Mechanisms Of Algal P Removalmentioning

confidence: 99%

Section: Mechanisms Of Algal P Removalmentioning

confidence: 99%

A Review of Phosphorus Removal Technologies and Their Applicability to Small-Scale Domestic Wastewater Treatment Systems

Bunce

Ndam

Ofiţeru

et al. 2018

Front. Environ. Sci.

401

204

View full text Add to dashboard Cite

show abstract

“…The best reason was medium with excess phosphorus concentration. Phosphorus is important in the production of cellular constituents such as phospholipids, nucleotides and nucleic acids [50]. Microalgae biomass are generated by the production of ATP and Nicotinamide adenine dinucleotide phosphate (NADPH) in the photosynthetic pathway, while ADP and NADP + be the acceptor molecules.…”

Section: Stage 2: Investigation Of Biomass and Lipid Productivity Of mentioning

confidence: 99%

Growth Medium Screening for Chlorella vulgaris Growth and Lipid Production

Wong¹

2017

JAMB

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“…It appears that which nutrient limitation induces the best performance in starch production differs among microalgal species. Particularly, owing to the storage of polyphosphate through "luxury uptake" and its function of regulating intracellular phosphate concentration (Powell et al 2009), the manipulation of starch accumulation by extracellular phosphorus deprivation may be complex. Carbohydrate accumulation is reportedly triggered primarily by the intracellular rather than extracellular phosphorus concentration, and carbohydrate starts to accumulate when intracellular phosphorus drops below a critical level (Dean et al 2008a, b;Sigee et al 2007).…”

Section: Introductionmentioning

confidence: 99%

Characterization of cell growth and starch production in the marine green microalga Tetraselmis subcordiformis under extracellular phosphorus-deprived and sequentially phosphorus-replete conditions

Yao

Cao

et al. 2013

Appl Microbiol Biotechnol

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Microalgal starch is a potential feedstock for biofuel production. Nutrient stress is widely used to stimulate starch accumulation in microalgae. Cell growth and starch accumulation in the marine green microalga Tetraselmis subcordiformis were evaluated under extracellular phosphorus deprivation with initial cell densities (ICD) of 1.5, 3.0, 6.0, and 9.0×10 6 cells mL were all obtained in the culture with the ICD of 3.0× 10 6 cells mL −1 . Appropriate ICD could be used to regulate the intracellular phosphorus concentration and maintain adequate photosynthetic activity to achieve the highest starch productivity, along with biomass and starch concentration. The recovery of phosphorus-deprived T. subcordiformis in medium containing 0.5, 1.0, or 6.0 mM KH 2 PO 4 was also tested. Cell growth and starch accumulation ability could be recovered completely. A phosphorus pool in T. subcordiformis was shown to manipulate its metabolic activity under different environmental phosphorus availability. Though lower starch productivity and starch content were achieved under phosphorus deprivation compared with nitrogen-or sulfur-deprived conditions, the higher biomass and starch concentration make T. subcordiformis a good candidate for biomass and starch production under extracellular phosphorus deprivation.

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Towards a luxury uptake process via microalgae – Defining the polyphosphate dynamics

Cited by 301 publications

References 19 publications

A Review of Phosphorus Removal Technologies and Their Applicability to Small-Scale Domestic Wastewater Treatment Systems

A Review of Phosphorus Removal Technologies and Their Applicability to Small-Scale Domestic Wastewater Treatment Systems

Growth Medium Screening for Chlorella vulgaris Growth and Lipid Production

Characterization of cell growth and starch production in the marine green microalga Tetraselmis subcordiformis under extracellular phosphorus-deprived and sequentially phosphorus-replete conditions

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