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Baillargues, France

Barrut B.,ARDA | Blancheton J.-P.,French Research Institute for Exploitation of the Sea | Muller-Feuga A.,Microphyt | Rene F.,French Research Institute for Exploitation of the Sea | And 4 more authors.
Bioresource Technology | Year: 2013

Low-energy and low-cost separation of microalgae from water is important to the economics of microalgae harvesting and processing. Flotation under vacuum using a vacuum gas lift for microalgae harvesting was investigated for different airflow rates, bubble sizes, salinities and harvest volumes. Harvesting efficiency (HE) and concentration factor (CF) of the vacuum gas lift increased by around 50% when the airflow rate was reduced from 20 to 10Lmin-1. Reduced bubble size multiplied HE and CF 10times when specific microbubble diffusers were used or when the salinity of the water was increased from 0‰ to 40‰. The reduction in harvest volume from 100 to 1L increased the CF from 10 to 130. An optimized vacuum gas lift could allow partial microalgae harvesting using less than 0.2kWhkg-1DW, thus reducing energy costs 10-100 times compared to complete harvesting processes, albeit at the expense of a less concentrated biomass harvest. © 2012 Elsevier Ltd. Source


Reaction jacket for a photosynthetic reactor, configured to float on an expanse of water and to define a gas/liquid culture medium diphasic flow path between first and second openings of the reaction jacket, the jacket including two sheaths, outer and inner, respectively, at least partially made from a material transparent to light radiation, the inner sheath extending inside the outer sheath such that these sheaths define an inter-sheath space between them in fluid connection with the first opening of the jacket, where the outer sheath has an open proximal end and a closed distal end, and the inner sheath has an open proximal end in fluid connection with the second opening of the jacket and a distal end provided with at least one communication orifice between the inside of the inner sheath and the inter-sheath space.


A photosynthetic reactor ( The present invention finds application in the field of cultivating photosynthetic microorganisms and notably algae.


Grant
Agency: Cordis | Branch: H2020 | Program: SME-1 | Phase: BG-12-2014-1 | Award Amount: 71.43K | Year: 2015

The SMILE project aims at developing a microalgae-based innovative natural marine ingredient with scientifically demonstrated benefits on weight management and metabolism issues. Obesity and overweight concerning 37% of world population in 2013 (The Lancet, 2014) represent major global health challenges causing millions of deaths worldwide. Well integrated comprehensive strategies can contribute to overweight management. Specifically developed bioactive compounds used in food supplements can help people wanting to lose weight. Consumer are looking for safe, effective (scientifically proven), affordable and natural solutions on these issues that represent today an unmet need. Marine environment is full of biological compounds that could represent relevant answers to these needs. Especially, a specific marine carotenoid found in algae, has received a strong and recent interest from the industry as several scientific publications have demonstrated superior efficacy of this molecule in comparison of existing products targeting weight reduction. However, the only available sourcing (a macroalgae) presents several drawbacks such as the presence of micro-pollutants and some sustainability issues. Through an innovative and patented technology, Microphyt produces sustainably and markets unique bioactive compounds extracted from the untapped diversity of microalgae. Microphyt has identified few strains which are difficult to produce in competitors systems and that are able to produce high quantities of this specific marine carotenoid. Moreover, our specific process allow the optimal production of this compound combined with PUFAs which exhibit demonstrated synergistic effects on metabolism. In this context SMILE ingredient represents a high added value potential for Microphyt. Phase 1 feasibility study aims at further analyzing IPR and regulatory status of the different strains, releasing a detailed business plan based on market feedback and pursue the scale up of the best selected strain.


Muller-Feuga A.,Microphyt | Lemar M.,Microphyt | Vermel E.,Microphyt | Pradelles R.,Microphyt | And 2 more authors.
Journal of Applied Phycology | Year: 2012

A closed tubular horizontal photobioreactor with the ability to produce industrially delicate microalgal species was assessed and validated. A co-current gas-liquid flow was chosen for mass transfer along 1,200 m piping which delimited a culture volume of 4,700 L. Mixing was obtained by means of hydrodynamic events accompanying this type of flow, including waves. The constant cross section of the piping allowed the circulation of spherical bodies to wipe the inner wall and avoid the establishment of a biofilm. Two similar reactors were constructed in December 2009 and December 2010, and operated to supply the dermo-beauty care industry with active biomass of three delicate species of microalgae, including the chlorophyte Neochloris oleoabundans and the rhodophyte Porphyridium cruentum. Daily observed production of dry biomass varied between 0. 2 and 1. 7 kg, depending on the species, the sun exposure and the period of the year. The ability of this production system to reduce the cost of producing algal biomass through scaling-up is discussed. © 2012 Springer Science+Business Media B.V. Source

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