Interactions of microalgae-bacteria consortia for nutrient removal from wastewater: A review

Fallahi, Alireza; Rezvani, Fariba; Asgharnejad, Hashem; Nazloo, Ehsan Khorshidi; Hajinajaf, Nima; Higgins, Brian

doi:10.1016/j.chemosphere.2021.129878

Cited by 227 publications

(85 citation statements)

References 148 publications

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“…The reported results present an innovative technological process to increase the EPS production, both from algae and fungus, but with a prevalence of the latter, demonstrating a synergic effect and not a merely sum. Moreover, several studies report with increased interest the use and recovery of sludge, obtained from wastewater treatment, as recovery matrices and production of EPS, given the abundance of microbial species within these glomerular sludge [61][62][63].…”

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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“…O cultivo de microalgas em consórcios tem sido adotado para diversas aplicações, incluindo o tratamento de efluentes através da remoção de nutrientes presentes no meio, bem como na produção de biomassa e bioativos associados a esta (Gonçalves et al, 2016;Liu et al, 2017;Zhang et al, 2020;Fallahi et al, 2021). Estudos preliminares já relataram, que esse sistema fornece uma proteção em relação à invasão de outros microrganismos e apresenta uma elevada produtividade de biomassa com composição diversificada de metabólitos similar a cada uma das espécies que fazem parte dele (Rashid et al, 2019;Nath et al, 2019).…”

Section: Introductionunclassified

Ocorrências e aplicações de consórcio de microalgas: uma revisão sistemática da literatura

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Nonato

Morioka

et al. 2022

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Esta revisão sistemática teve como objetivo investigar a literatura referente à ocorrência e aplicações de consórcio de microalgas, com finalidade de pesquisar artigos em periódicos internacionais indexados na base de dados Scopus. Foi utilizada a Systematic Literature Review (SLR) para mapear na literatura variáveis como publicações mais citadas, evolução das publicações, e periódicos mais relevantes. A pesquisa extraiu 278 artigos até junho de 2020. As publicações foram reduzidas a 224 artigos que compreendiam os dois tipos de consórcio propostos para investigação: 92 artigos do consórcio Microalga-Microalga (MM) e 132 artigos do consórcio Microalga-Bactéria (MB). Foram também investigados artigos que abrangessem consórcios no tratamento de efluentes, estes constituíram 116 publicações da amostra. Os resultados da pesquisa mostram que os estudos referentes a consórcio de microalgas adquiriram protagonismo nos últimos anos. Destacou-se a atuação de consórcios no tratamento de efluentes e o beneficiamento da biomassa microalgal na quantificação de bioativos de interesse como tema recorrente na literatura. Diante das possíveis aplicações, a literatura reporta a utilização da biomassa do consórcio de microalgas geradas durante o processo de tratamento de efluentes para sua potencialidade na produção de biocombustíveis. Por outro lado, a implementação de sistemas cultivo expansivos e outras alternativas para aplicação da biomassa ainda são pouco abordadas pela literatura sendo consideradas lacunas da pesquisa.

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“…5 In addition, nutrient concentrations have been increasing in water systems as a consequence of human activities, creating critical challenges for the environment, in particular leading to the negative consequences of eutrophication. 6 Microalgae have gained significant attention during the last decades owing both to their efficient nutrient-removal from urban wastewaters and their CO 2 fixation. 4,7 Several microalgae species have been reported to have the capability for CO 2 fixation and also to grow in urban wastewaters among which Scenedesmus obliquus and Chlorella vulgaris are the most promising candidates.…”

Section: Introductionmentioning

confidence: 99%

Effects of simultaneous CO₂ addition and biomass recycling on growth characteristics of microalgal mixed culture

Fallahi

Hajinajaf

Tavakoli

et al. 2021

J of Chemical Tech & Biotech

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BACKGROUND: This study aims to investigate the effect of simultaneous carbon dioxide (CO 2 ) addition and biomass recycling on specific performance parameters (including biomass productivity and harvestability, and species abundance) of the mixed culture of two freshwater microalgae species Chlorella vulgaris and Scenedesmus obliquus in a flat-panel photobioreactor grown semicontinuously using secondary effluent urban wastewater as the culture medium. Recycling a portion of the gravityharvested biomass back to the system has positive effects on biomass productivity and harvestability by letting microalgal cells utilize more of the available light energy and promoting the dominance of settleable microalgal species of S. obliquus (owing to their large cell sizes) in the mixed culture. Furthermore, CO 2 addition could supply the carbon limitation of urban wastewater and boost biomass production. RESULTS:The work confirmed that simultaneous CO 2 addition and biomass recycling improved the biomass productivity by 314%, promoted the dominance of the larger algae species S. obliquus in the mixed culture by 38%, and increased the gravity sedimentation by 85% compared to the control that had no recycling and CO 2 addition. Concerning the secondary effluent urban wastewater, the interaction of CO 2 addition and biomass recycling was insignificant regarding the improvement in nutrient removal efficiency.CONCLUSION: The findings proved the potential benefits of simultaneous biomass recycling and CO 2 addition for reaching a high cell density, and demonstrated its potential for high biomass harvest efficiency in microalgae-based wastewater treatment systems.

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Interactions of microalgae-bacteria consortia for nutrient removal from wastewater: A review

Cited by 227 publications

References 148 publications

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

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

Ocorrências e aplicações de consórcio de microalgas: uma revisão sistemática da literatura

Effects of simultaneous CO₂ addition and biomass recycling on growth characteristics of microalgal mixed culture

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Interactions of microalgae-bacteria consortia for nutrient removal from wastewater: A review

Cited by 227 publications

References 148 publications

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

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

Ocorrências e aplicações de consórcio de microalgas: uma revisão sistemática da literatura

Effects of simultaneous CO2 addition and biomass recycling on growth characteristics of microalgal mixed culture

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Effects of simultaneous CO₂ addition and biomass recycling on growth characteristics of microalgal mixed culture