Influence of solids residence time and carbon storage on nitrogen and phosphorus recovery by microalgae across diel cycles

Gardner-Dale, David Andrew; Bradley, Ian; Guest, Jeremy S.

doi:10.1016/j.watres.2017.05.033

Cited by 55 publications

(80 citation statements)

References 54 publications

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“…the micronutrients Mo, K, Co, Fe, Mg, Mn, B, and Zn are only required in trace amounts but have a strong impact on microalgae growth, as they influence many enzymatic activities in algal cells [ 78 , 87 ] Usually, inorganic nitrogen and phosphorus are absorbed as nitrates and phosphates. Urea is also a suitable source and a cost-effective alternative to other inorganic nitrogen sources.…”

Section: Introductionmentioning

confidence: 99%

The promising future of microalgae: current status, challenges, and optimization of a sustainable and renewable industry for biofuels, feed, and other products

2018

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Microalgae have recently attracted considerable interest worldwide, due to their extensive application potential in the renewable energy, biopharmaceutical, and nutraceutical industries. Microalgae are renewable, sustainable, and economical sources of biofuels, bioactive medicinal products, and food ingredients. Several microalgae species have been investigated for their potential as value-added products with remarkable pharmacological and biological qualities. As biofuels, they are a perfect substitute to liquid fossil fuels with respect to cost, renewability, and environmental concerns. Microalgae have a significant ability to convert atmospheric CO2 to useful products such as carbohydrates, lipids, and other bioactive metabolites. Although microalgae are feasible sources for bioenergy and biopharmaceuticals in general, some limitations and challenges remain, which must be overcome to upgrade the technology from pilot-phase to industrial level. The most challenging and crucial issues are enhancing microalgae growth rate and product synthesis, dewatering algae culture for biomass production, pretreating biomass, and optimizing the fermentation process in case of algal bioethanol production. The present review describes the advantages of microalgae for the production of biofuels and various bioactive compounds and discusses culturing parameters.

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Section: Introductionmentioning

confidence: 99%

The promising future of microalgae: current status, challenges, and optimization of a sustainable and renewable industry for biofuels, feed, and other products

2018

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“…In terms of macronutrients, phytoplankton are unique in their ability to metabolize multiple forms of nutrients (e.g., NO 3 - , NH 4 + , NO 2 - , and DON for nitrogen (Dortch, 1990; Flynn et al., 1997; Liu et al., 2012): PO 4 3- and DOP for phosphorus (Brown and Shilton, 2014; Liu et al., 2012)). The respective rates of N and P uptake are not independent: rather, algae can modify their N:P ratio via growth rate (typically between 2.3:1 to 23:1 on a mass basis) in response to fluctuating nutrient concentrations, which commonly occur at WRRFs (Gardner-Dale et al., 2017; Geider and La Roche, 2002). The form of nitrogen that is being taken up affects growth rate as well as pH.…”

Section: Mechanistic Modeling Of Phytoplanktonmentioning

confidence: 99%

“…Lipids, conversely, are produced at a slower rate, but accumulate to a greater extent in many species of algae (Davis et al., 2016; Laurens et al., 2014). As an added layer of complexity, biomass composition can change both over diel cycles and also in response to design decisions (e.g., SRT (Gardner-Dale et al., 2017)), necessitating more mechanistic modeling of these metabolic processes. Oxygen consumption should also be accounted for using Monod kinetics when modeling stored carbon usage.…”

Section: Mechanistic Modeling Of Phytoplanktonmentioning

confidence: 99%

Microalgae and cyanobacteria modeling in water resource recovery facilities: A critical review

Shoener

Schramm

Béline³

et al. 2019

Water Research X

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Microalgal and cyanobacterial resource recovery systems could significantly advance nutrient recovery from wastewater by achieving effluent nitrogen (N) and phosphorus (P) levels below the current limit of technology. The successful implementation of phytoplankton, however, requires the formulation of process models that balance fidelity and simplicity to accurately simulate dynamic performance in response to environmental conditions. This work synthesizes the range of model structures that have been leveraged for algae and cyanobacteria modeling and core model features that are required to enable reliable process modeling in the context of water resource recovery facilities. Results from an extensive literature review of over 300 published phytoplankton models are presented, with particular attention to similarities with and differences from existing strategies to model chemotrophic wastewater treatment processes (e.g., via the Activated Sludge Models, ASMs). Building on published process models, the core requirements of a model structure for algal and cyanobacterial processes are presented, including detailed recommendations for the prediction of growth (under phototrophic, heterotrophic, and mixotrophic conditions), nutrient uptake, carbon uptake and storage, and respiration.

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“…Other than that, the diatom Nitzschia perspicua can accumulated additional carbohydrate and lipids without significantly affecting the growth rate by changing the concentration of Si in the media culture (Jiang et al, 2015). Although Mo, K, Co, Fe, Mg, Mn, B, and Zn are only required in trace amounts in algae cultivation, these micronutrients have a significant impact on microalgae growth due to their influence on many enzymatic activities (Hu et al, 2006;Gardner et al,, 2017).…”

Section: Journal Of Sustainabilitymentioning

confidence: 99%

Microalgae and the Factors Involved in Successful Propagation for Mass Production

Ramlee¹,

Rasdi²,

Wahid³

et al. 2021

JSSM

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Recently, microalgae have been regarded as useful organisms worldwide due to their potential for extensive application in renewable energy, aquaculture, biofuel and pharmaceuticals. Different species of microalgae have drawn significant interest because of their biological and chemical composition, which could potentially be useful in developing new applications in the aquaculture, biofuel and pharmaceutical industries. Furthermore, various culture techniques have been developed based on the species and environmental condition to ensure its mass production. Although microalgae are feasible sources for a successful biological product, limitations and challenges remain, which need to be solved with the innovation of new alternative technology in culturing and producing successful mass cultures. In this review, several current microalgae species production methods will be discussed based on their applications, and biological and chemical compositions, which are influenced by their growth parameters.

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Influence of solids residence time and carbon storage on nitrogen and phosphorus recovery by microalgae across diel cycles

Cited by 55 publications

References 54 publications

The promising future of microalgae: current status, challenges, and optimization of a sustainable and renewable industry for biofuels, feed, and other products

The promising future of microalgae: current status, challenges, and optimization of a sustainable and renewable industry for biofuels, feed, and other products

Microalgae and cyanobacteria modeling in water resource recovery facilities: A critical review

Microalgae and the Factors Involved in Successful Propagation for Mass Production

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