OENO IVAS 2019 banner
IVES 9 IVES Conference Series 9 Characterization and application of silicon carbide (SiC) membranes to oenology

Characterization and application of silicon carbide (SiC) membranes to oenology

Abstract

After fermentations, the crude wine is a turbid medium not accepted by the consumer therefore, it needs to be filtered. Wine is increasingly filtered on microfiltration membranes but the low porosity of membranes currently used limits the efficiency of industrial installations. In fact, an increase in flow rates is expected in order to reduce the number of cleaning cycles and the size of the installations. 

SiC membranes have very interesting physico-chemical characteristics: low density, high porosity, high hydrophobicity, and good resistance to extreme pH and can become a solution to the problems encountered in the oenology sector. In order to apply these membranes, it’s essential to know their microstructure to understand their physico-chimic and hydrodynamic properties. To provide relevant information, different analytical techniques such as 2D, 3D imaging, porosity by mercury intrusion and measurement of contact angle were used. Poral phase analysis of membranes obtained has given concurrent results for all analytical techniques used and with the data provided by the membrane manufacturer. Compared to other ceramic membranes used in oenology, SiC membranes are anisotropic, have a higher porosity (> 40 %) and have a lesser tortuosity (1.20) giving them higher permeate flows. 

They also have a high hydrophobicity (water = 85.5°) explaining their better resistance to organic adsorption. Due the fact that wine is a complex and fouling colloidal matrix, filtration tests have been carried out on wine in order to identify the best filtration operating conditions. For a turbulent flow regime and a transmembrane pressure around 2 bars, a high permeate flux was obtained (450 l.h-1.m-2.bar-1) and this flux is permeat flux dependant. 

Finally, SiC membranes regeneration was studied: due to an organic fouling found after the filtration sessions, a sodium hydroxide clean-in-place combined with surfactants and hydrogen peroxide at high temperature allowed to recover the total permeability of the membranes.

DOI:

Publication date: June 10, 2020

Issue: OENO IVAS 2019

Type: Article

Authors

Mathilda Trévisan, Philippe Moulin, Rémy Ghidossi, Klaus Schmalbuch

Unité de Recherche Oenologie – Institut des Sciences de la Vigne et du Vin 210 Chemin de Leysotte 33140 Villenave d’Ornon

 

Contact the author

Keywords

Silicon Carbide, Ceramic membranes, Characterization, Filtration 

Tags

IVES Conference Series | OENO IVAS 2019

Citation

Related articles…

Selective and sensitive quantification of wine biogenic amines using a dispersive solid-phase extraction clean-up/concentration method

Biogenic amines exist in numerous foods, including wine. They can have aliphatic (putrescine, cadaverine, spermine, and spermidine), aromatic (tyramine and phenylethylamine) and heterocyclic structure (histamine and tryptamine)

A meta-analysis of the ecological impact of viticultural practices on soil biodiversity

Viticulture is facing two major challenges – climate change and agroecological transition. The soil plays a pivotal role in these transition processes. Therefore, soil quality and adequate soil management are key levers for an ecologically and economically sustainable viticulture. Over the last 15 years, numerous studies evidenced strong effects of viticultural practices on the soil physical, chemical and biological quality. However, to date a global analysis providing a comprehensive overview of the ecological impacts of viticultural practices on soil biological quality is missing.

Towards multi-purpose valorisation of polyphenols from grape pomace: Pressurized liquid extraction coupled to purification by membrane processes

Grape by-products (including skins, seeds, stems and vine shoots) are rich in health promoting polyphenols. Their extraction from winery waste and their following purification are of special interest to produce extracts with high added value compounds. Meanwhile, the growing concern over environmental problems associated with economic constraints, require the development of environmentally sustainable extraction technologies. The extraction using semi-continuous subcritical water, as a natural solvent at high temperature and high pressure a technology is promising “green” technology that is environmentally friendly, energy efficient and improve the extraction process in plant tissues.

Vine field monitoring using high resolution remote sensing images: segmentation and characterization of rows of vines

A new framework for the segmentation and characterization of row crops on remote sensing images has been developed and validated for vineyard monitoring. This framework operates on any high-resolution remote sensing images since it is mainly based on geometric information. It aims at obtaining maps describing the variation of a vegetation index such as NDVI along each row of a parcel.

Physicochemical behaviour of wine spirit and wine distillate aged in Sherry Casks® and Brandy casks

Brandy is a spirit drink made from “wine spirit” (<86% Alcohol by Volume – ABV; high levels of congeners and they are mainly less volatile than ethanol), it may be blended with a “wine distillate” (<94.8%ABV; low levels of congeners and these are mainly more volatile than ethanol), as long as that distillate does not exceed a maximum of 50% of the alcoholic content of the finished product[1]. Brandy must be aged for at least 6 months in oak casks with <1000L of capacity. During ageing, changes occur in colour, flavour, and aroma that improve the quality of the original distillate.