Nanocomposite MFI-alumina and FAU-alumina Membranes: Synthesis, Characterization and Application to Paraffin Separation and CO2 Capture

Rouleau, L. Pirngruber, G. Guillou, F. Barrere-Tricca, C. Omegna, A. Valtchev, V. Pera-Titus, M. Miachon, S. Dalmon, J. A.International audienceIn this work, we report the preparation of thermally and mechanically resistant high-surface (24-cm2) nanocomposite MFI-alumina and FAUalumina membranes by pore-plugging synthesis inside the macropores of α-alumina multilayered tubular supports. The MFI membranes were prepared from a clear solution precursor mixture being able to easily penetrate into the pores of the support. The MFI membranes were evaluated in the separation of n-/i-butane mixtures. The synthesis reliability was improved by mild stirring. The most selective MFI membranes were obtained for supports with mean pore sizes of 0.2 and 0.8 μm. The MFI effective thickness could be reduced to less than 10 μm by impregnating the support with water prior to synthesis and by diluting the synthesis mixture. The best MFI membrane offered an excellent tradeoff between selectivity and permeance at 448 K, with separation factors for equimolar n-butane/i-butane mixtures up to 18 and n-butane mixture permeances as high as 0.7 μmol$\cdot$s-1$\cdot$m-2$\cdot$Pa-1.Furthermore, a novel nanocomposite FAU membrane architecture has been obtained by an original synthesis route including in situ seeding using a cold gel-like precursor mixture, followed by growth of the FAU material by hydrothermal synthesis in two steps using a clear solution of low viscosity. This new membrane showed interesting performance in the separation of an equimolar CO2/N2 mixture at 323 K, with CO2/N2 separation factors and mixture CO2 permeances up to 12 and 0.4 μmol$\cdot$s-1$\cdot$m-2$\cdot$Pa-1,respectively

Innovation for organic Broccoli: Breeding for diversity and quality in France

In the framework of SOLIBAM, integrated breeding strategy are implemented in order to develop populations adapted to organic and low input practices (WP3, tasks 3.1, 3.2 and WP6, task 6.3). As sensory quality is a great expectation from organic consumer, breeding strategy will integrate sensory criteria. In order to create new type populations, a large germplasm of broccoli have been first screened for their agronomical performance and their sensory quality. On these results, a minimum number of common traits required have been proposed on the agronomical, gustatory qualities and more secondary on appearance traits. The next step consists in selecting individuals of interest, crossing them in order to tend to populations which complied with requirement. Each harvest will lead to a sensory evaluation and help the breeding choice

How to implement organoleptic quality assessment in a participatory plant breeding approach

Sensory quality is a great expectation from consumer and more specifically from the new organic consumer (post food crisis) which is more interested in the practical aspect than the environmental ones (Zanoli et al.). Whereas some objectives’ quality parameters can be measured by instrument (firmness, maturity, acidity…), sensory quality measurement need to analyse human perception. In the context of the European project SOLIBAM, a new methodology is experimented to integrate gustatory criterion in the breeding process, and particularly in participatory plant breeding programs. This methodology called “Napping®” involves a panel of professionals of the product (breeders, bakers, farmers), who have to position the product onto a large sheet of paper according to the sensory distance (similarity/dissimilarity) he perceives between the products. Ones the panellist had position its products; he had to associate one or two descriptors to each product. This poster aims to illustrate the methodology with an example on breads

DURAPI – Vers une meilleure connaissance et un accompagnement technique des exploitations apicoles professionnelles : durabilité, stratégies de renouvellement du cheptel et conséquences sur le fonctionnement global de l’exploitation

Variability of the production context, colony losses: professional beekeepers have to cope with several environmental and socio-economic issues to ensure the sustainability of their farm. Thus, the DURAPI project aimed at developing a sustainability assessment framework for bee farming operations through a participatory design involving the stakeholders from the beekeeping sector. We also considered the part of the colony and queen replacement strategy, which is central in the colony management: the existing replacement strategies were identified and their possible consequences on the farm sustainability, in particular on the work organisation, were studied. These results allowed us to develop training tools for future beekeepers. This project also provides several support tools for beekeeping advisors.Variabilité du contexte de production, pertes de colonies d’abeilles : les exploitations apicoles font aujourd'hui face à différentes problématiques environnementales comme socio-économiques. Dans ce contexte, le projet DURAPI a visé à élaborer un cadre d’évaluation de la durabilité de ces exploitations, à travers une démarche participative qui a impliqué de nombreux acteurs de la filière. Parallèlement, la place de la gestion du renouvellement des colonies et des reines dans cette durabilité a été considérée. Les principales stratégies de renouvellement du cheptel mises en place dans les exploitations ont ainsi été identifiées afin d’ensuite caractériser leurs conséquences possibles sur cette durabilité de l’exploitation, notamment en termes de temps et d’organisation du travail. Ces différents résultats ont donné lieu à la création de supports pour les formateurs en apiculture. Les méthodes développées dans le cadre du projet peuvent par ailleurs être mobilisées pour l’appui aux apiculteurs ou futurs installés