Penggunaan Eceng Gondok (Eichornia Crassipes Solm.) Dan Tempurung Kelapa Dala…

This study aims to determine the best composition of water hyacinth and coconut shell in making briquettes. This study was conducted from January to April 2017. The results were used as the design of the conventional biotechnology student worksheet in Senior High School. This research was conducted with 2 stages, first stage of making of briquettes mixture of water hyacinth and coconut shell in…