PEMBUATAN BRIKET DARI CAMPURAN BLOTONG DAN LIMBAH PADAT PROSES SINTESIS FURFURAL BERBAHAN DASAR AMPAS TEBU PREPARATION OF BRIQUETTE FROM FILTER CAKE AND SOLID WASTE OF FURFURAL SYNTHESIS PROCESS FROM STARTING MATERIAL BAGASSE - ANIES SHIAMI, MAULANI (UNESA Journal of Chemistry, 1970)