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Management board

Executive board and supervisory board of BioWanze SA


Guy Paternoster, CEO

Born 1957, Raffinerie Tirlemontoise / Director Biowanze

Guy Paternoster, born in Mons (Belgium), studied agricultural engineering, graduating from the Gembloux Agronomics Faculty in 1981.

After starting out as an agricultural products consultant for Lebrun fertilizers, in 1985 Guy Paternoster joined the team at the Raffinerie Tirlemontoise (member of the SĂĽdzucker group) as an agronomist.

A long and brilliant career in the SĂĽdzucker group

From 1992 to 1999, he held the position of Head of the Agronomics Department at the Raffinerie Tirlemontoise.
From 1999 to 2003, he was Plant Manager of the Brugelette factory.
Between 2004 and 2008, he was involved in the construction of the Beneo Orafti Chili plant as Project Manager, Raw Materials.
In 2006, Guy Paternoster was appointed Member of the Executive Board and Director of Raw Materials and Production at the Raffinerie Tirlemontoise.

He has been CEO of the Raffinerie Tirlemontoise since March 2019 and also holds other related directorships in several Südzucker group subsidiaries, in particular Biowanze. He has been President of Wagralim (agri-food competitiveness cluster) since June 2019, a position he also holds at the Institut Royal Belge pour l’Amélioration de la Betterave (IRBAB - Belgian Royal Institute for the Improvement of Beet). In addition, he sits on the board of the Union Wallonne des Entreprises (UWE - Walloon Business Union).

At the same time, Guy Paternoster is a farmer at the heart of his native region. He is a pragmatic man of the land, anchored in the farming world and passionate about economy. His priorities in the various positions he holds are to create added value, stimulate the sharing of know-how and increase sustainability in the group’s companies.

Pierre Etienne, Manager Biowanze

Born 1977, Manager Biowanze

Pierre Etienne graduated as an Industrial Engineer in Biochemistry from the Institut Meurice Bruxelles in 2001.
In September 2001, he joined the Quality Control department of the Brasserie d’Orval before being taken on at the applied research laboratory of the Institut Meurice in March 2002 in the context of a research programme on fermenting yeast.
In August 2002, Pierre Etienne became Head of Quality at the Brasserie l’Union (Alken-Maes Group).
In September 2005, he moved to the Brasserie Chimay as Head of Quality. He later became head of production and packaging here in 2011.

In December 2017, Pierre Etienne joined the CropEnergies group as Head of Production at Biowanze.
As of July 2020, he was appointed manager of Biowanze S.A.

Pierre Etienne, who is married and has two daughters, is fully committed to the development of the Biowanze sustainability procedure.
His daily mission is to increase the added value of the virtuous and innovative ecosystem at the group’s Walloon site.

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BioWanze SA
Rue LĂ©on Charlier, 11
4520 Wanze