The Environmental Biorefinery: Using Microalgae to Remediate Wastewater, a Win-Win Paradigm

Delrue, Florian; Álvarez-Díaz, Pablo; Fon-Sing, Sophie; Fleury, G.; Sassi, Jean-François

doi:10.3390/en9030132

Cited by 156 publications

(104 citation statements)

References 109 publications

(135 reference statements)

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“…The resulting CO 2 and volatile fatty acids can be reused to produce bioplastics, bioelectricity, and biohydrogen [41]. The biorefinery models analyzed in this context could open new avenues to convert CO 2 into several valuable products, materials, and fuels, which could help to close the carbon cycle and contribute to the bioeconomy of the process [42,43].…”

Section: Of 19mentioning

confidence: 99%

Techno-Economic Study of CO2 Capture of a Thermoelectric Plant Using Microalgae (Chlorella vulgaris) for Production of Feedstock for Bioenergy

et al. 2020

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A current concern is the increase in greenhouse gas emissions, mainly CO2, with anthropogenic sources being the main contributors. Microalgae have greater capacity than terrestrial plants to capture CO2, with this being an attraction for using them as capture systems. This study aims at the techno-economic evaluation of microalgae biomass production, while only considering technologies with industrial scaling potential. Energy consumption and operating costs are considered as parameters for the evaluation. In addition, the capture of CO2 from a thermoelectric plant is analyzed, as a carbon source for the cultivation of microalgae. 24 scenarios were evaluated while using process simulation tools (SuperPro Designer), being generated by the combination of cultivations in raceway pond, primary harvest with three types of flocculants, secondary harvest with centrifugation and three filtering technologies, and finally the drying evaluated with Spray and Drum Dryer. Low biomass productivity, 12.7 g/m2/day, was considered, achieving a capture of 102.13 tons of CO2/year in 1 ha for the cultivation area. The scenarios that included centrifugation and vacuum filtration are the ones with the highest energy consumption. The operating costs range from US $ 4.75–6.55/kg of dry biomass. The choice of the best scenario depends on the final use of biomass.

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Section: Of 19mentioning

confidence: 99%

Techno-Economic Study of CO2 Capture of a Thermoelectric Plant Using Microalgae (Chlorella vulgaris) for Production of Feedstock for Bioenergy

et al. 2020

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“…The environmental biorefinery consists of transformation of organic wastes into resources [1]. According to this concept, waste generated by our society is recycled and reused in processes in which they are transformed into value-added products instead of being directly mineralized and/or discharged in nature [2]. Anaerobic digestion (AD) is a simple, spontaneous and robust process and a well-established example of a technology able to recover organic waste into methane.…”

Section: Introductionmentioning

confidence: 99%

Upscaling of Microbial Electrolysis Cell Integrating Microbial Electrosynthesis: Insights, Challenges and Perspectives

Tian¹,

Lacroix²,

Quéméner³

et al. 2019

Preprint

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Recent development of microbial electrochemical technologies has allowed microbial electrosynthesis (MES) of organic molecules with microbial electrolysis cell treating waste organic matter. An electrolytic cell with a MES cathode (ME-ME cell) can produce soluble organic molecules with higher market price than biomethane, and thus satisfy both economic and environmental interest. However, the sustainability of bioanode activity could become a major concern. In this work, a 15-liter ME-ME reactor was designed with specific electrode configurations. An electrochemical model was established to assess the feasibility and possible performance of the design, considering the “aging” effect of the bioanode. The reactor was then built and operated for performance evaluation as well as bioanode regeneration assay. Biowaste from an industrial deconditioning platform was used as substrate for bioanode. The COD removal rate in the anodic chamber reached 0.83 g day-1 L-1 of anolyte and the anodic coulombic efficiency reached 98.6%. Acetate was produced with a rate of 0.53 g day-1 L-1 of catholyte, reaching a maximum concentration of 8.3 g L-1. A potential difference was applied between the bioanode and biocathode independent of reference electrodes. The active biocathode was dominated by members of the Genus Pseudomonas, rarely reported so far for MES activity.

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“…, Delrue et al. ). In particular, the possible synergistic role of acidophilic and non‐acidophilic microalgae together with bacteria, all contained in biofilms, has been reported for AMD bioremediation (Abinandan et al.…”

Section: Products and Applications Of Extremophile Microalgaementioning

confidence: 99%

Extremophile Microalgae: the potential for biotechnological application

Malavasi

Soru

Cao

2020

Journal of Phycology

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Microalgae are photosynthetic microorganisms that use sunlight as an energy source, and convert water, carbon dioxide, and inorganic salts into algal biomass. The isolation and selection of microalgae, which allow one to obtain large amounts of biomass and valuable compounds, is a prerequisite for their successful industrial production. This work provides an overview of extremophile algae, where their ability to grow under harsh conditions and the corresponding accumulation of metabolites are addressed. Emphasis is placed on the high‐value products of some prominent algae. Moreover, the most recent applications of these microorganisms and their potential exploitation in the context of astrobiology are taken into account.

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The Environmental Biorefinery: Using Microalgae to Remediate Wastewater, a Win-Win Paradigm

Cited by 156 publications

References 109 publications

Techno-Economic Study of CO2 Capture of a Thermoelectric Plant Using Microalgae (Chlorella vulgaris) for Production of Feedstock for Bioenergy

Techno-Economic Study of CO2 Capture of a Thermoelectric Plant Using Microalgae (Chlorella vulgaris) for Production of Feedstock for Bioenergy

Upscaling of Microbial Electrolysis Cell Integrating Microbial Electrosynthesis: Insights, Challenges and Perspectives

Extremophile Microalgae: the potential for biotechnological application

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