I works as associate professor at Brawijaya University Regional and Urban Planning Department, Malang, Indonesia I received my master’s degree in renewable energy from Fachhochschule Koeln, Germany in 2004 and Dr.techn. degree in environmental technology from Technische Universitaet Graz, Austria in 2012. My expertise is related to environmental field such as biogas management, waste management, green house emission and renewable energy development. I am registered as a member of Asia-Pacific Chemical, Biological & Environmental Engineering Society (APCBEES).