PRODUCTION OF ACETONE, BUTANOL, AND ETHANOL (ABE) BY CLOSTRIDIUM SACCHAROPERBUTYLACETONICUM N1-4 (ATCC 13564) FOR BIOENERGY : EFFECT OF PHOSPHATE AND INITIAL PH ON ABE RATIOS AND PRODUCTIVITY - Hanies Ambarsari; Kenji Sonomoto (Badan Pengkajian dan Penerapan Teknologi, 2014)