Jan Klok has won the public prize at the annual Engineer of the year election, the Prins Friso Prize.

Jan Klok, working for Paqell and Wetsus, has won the public prize at the annual Engineer of the year election, the Prins Friso Prize. The election is organized by KIVI, the Royal Netherlands Society of Engineers. Jan Klok was nominated by KIVI for valorization of his research and the greening of amongst others the oil- and gas industry. He developed an environmentally friendly desulphurisation process for removing hydrogen sulfide and recovering it as elemental sulfur from sour gas streams, utilizing naturally occurring bacteria.