Grootjans was born at Wilrijk. He became a licentiate in the trade and consular sciences and was chief editor and director of the newspaper De Nieuwe Gazet. He was a Municipal Council member (1971–1986) in Antwerp and a member of parliament (1954–1987) for the district Antwerp for the PVV.
Grootjans was born in Wilrijk. He earned a licentiate in trade and consular sciences, served as chief editor and director of De Nieuwe Gazet, and was a Municipal Council member (1971–1986) in Antwerp and a member of parliament (1954–1987) for the district Antwerp for the PVV.