Microalgae: A Way Forward Approach Towards Wastewater Treatment and Bio-Fuel Production

Ray, Madhurya; Kumar, Neeraj; Kumar, Vipin; Negi, Sangeeta; Banerjee, Chiranjib

doi:10.1016/b978-0-12-815407-6.00012-5

Cited by 10 publications

(5 citation statements)

References 51 publications

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“…Microalgae, a group of primary producers, are a diverse group of eukaryotic microorganisms that can be found in freshwater or marine sediments. They also exhibit better opportunities than other technology to be an economical resource for efficient removal of metals and other high-value nutrients from wastewater [103]. Microalgae can uptake both nitrogen and phosphorus, as well as a more remote generation of biomass which can be used as a further source of producing energy-rich and high-value compounds.…”

Section: Microalgae Uptakementioning

confidence: 99%

Advances in Circular Bioeconomy Technologies: From Agricultural Wastewater to Value-Added Resources

et al. 2021

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This review systematically outlines the recent advances in the application of circular bioeconomy technologies for converting agricultural wastewater to value-added resources. The properties and applications of the value-added products from agricultural wastewater are first summarized. Various types of agricultural wastewater, such as piggery wastewater and digestate from anaerobic digestion, are focused on. Next, different types of circular technologies for recovery of humic substances (e.g., humin, humic acids and fulvic acids) and nutrients (e.g., nitrogen and phosphorus) from agricultural wastewater are reviewed and discussed. Advanced technologies, such as chemical precipitation, membrane separation and electrokinetic separation, are evaluated. The environmental benefits of the circular technologies compared to conventional wastewater treatment processes are also addressed. Lastly, the perspectives and prospects of the circular technologies for agricultural wastewater are provided.

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Section: Microalgae Uptakementioning

confidence: 99%

Advances in Circular Bioeconomy Technologies: From Agricultural Wastewater to Value-Added Resources

et al. 2021

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“…Despite an increase of contamination susceptibility [47], usage of an organic carbon source offers the opportunity to dramatically reduce microalgae cultivation by reusing surplus nutrient found in several factory effluents [48][49][50] or domestic wastewater [34]. Such potential led researchers to combine microalgae cultivation with wastewater treatment, yielding reports which describe the outstanding production of lipids [51] and biomass [52] as well as nitrogen and phosphorus assimilation [53], when growing under heterotrophic mode.…”

Section: Cultivation Modesmentioning

confidence: 99%

Microalgae: Cultivation Aspects and Bioactive Compounds

Coelho

Tundisi

Cerqueira

et al. 2019

Braz. arch. biol. technol.

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Microalgae are aquatic unicellular microorganisms that can be found both in freshwater and marine systems; are capable of photosynthesis; and can grow as individual cells or associated in chains or small colonies. Microalgae cultivation has gained large momentum among researchers in the past decades due to their ability to produce value metabolites, remarkable photosynthetic efficiency, and versatile nature. The wide technological potential, and thus increasing amount of scattered knowledge, may become the very first barrier that a post graduating student, or any non-specialist reader, will face when introduced to the subject. In this review paper, we access the core aspects of microalgae technology, covering their main characteristics, and comprehensively presenting the main features of their various cultivation modes and biological activity from metabolites.

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“…We hypothesized that (1) the diversity and community structure of micro-eukaryotes vary in response to drought and warming. More specifically, we hypothesised that (2) drought causes a decrease in the relative abundance and diversity of primary producers, as microalgae predominantly inhabit aquatic environments (e.g., Ray et al, 2019 ), (3) an increase in the diversity and relative proportion of fungi, as it has been suggested that drought leads to increased dominance of fungi ( Jensen et al, 2003 ), and this agrees with observational evidence for a higher contribution of fungi to overall microbial biomass under drier conditions ( Mitchell et al, 2003 ), although responses might be site-specific ( Jaatinen et al, 2007 ); (4) the effects of drought are exacerbated by the effects of warming; and (5) drought has a stronger effect than warming. To this aim, we conducted a passive warming and water table depth field manipulative experiment and assessed the diversity of micro-eukaryotes by high throughput sequencing (Illumina HiSeq) of the SSU rRNA V9 region.…”

Section: Introductionmentioning

confidence: 99%

Assessing the responses of Sphagnum micro-eukaryotes to climate changes using high throughput sequencing

Reczuga

Seppey

Mulot

et al. 2020

PeerJ

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Current projections suggest that climate warming will be accompanied by more frequent and severe drought events. Peatlands store ca. one third of the world’s soil organic carbon. Warming and drought may cause peatlands to become carbon sources through stimulation of microbial activity increasing ecosystem respiration, with positive feedback effect on global warming. Micro-eukaryotes play a key role in the carbon cycle through food web interactions and therefore, alterations in their community structure and diversity may affect ecosystem functioning and could reflect these changes. We assessed the diversity and community composition of Sphagnum-associated eukaryotic microorganisms inhabiting peatlands and their response to experimental drought and warming using high throughput sequencing of environmental DNA. Under drier conditions, micro-eukaryotic diversity decreased, the relative abundance of autotrophs increased and that of osmotrophs (including Fungi and Peronosporomycetes) decreased. Furthermore, we identified climate change indicators that could be used as early indicators of change in peatland microbial communities and ecosystem functioning. The changes we observed indicate a shift towards a more “terrestrial” community in response to drought, in line with observed changes in the functioning of the ecosystem.

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Microalgae: A Way Forward Approach Towards Wastewater Treatment and Bio-Fuel Production

Cited by 10 publications

References 51 publications

Advances in Circular Bioeconomy Technologies: From Agricultural Wastewater to Value-Added Resources

Advances in Circular Bioeconomy Technologies: From Agricultural Wastewater to Value-Added Resources

Microalgae: Cultivation Aspects and Bioactive Compounds

Assessing the responses of Sphagnum micro-eukaryotes to climate changes using high throughput sequencing

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