LiqTech International, Inc. announced that Sune Mathiesen, Chief Executive Officer, has taken a medical leave of absence. Alexander J. Buehler, who is currently serving as a member of the Board of Directors, has been appointed to serve as Interim Chief Executive Officer, effective immediately. Mr. Buehler has served as a Director of LiqTech since 2017, during which time he has also served as the Audit Committee Chairman.