01996nam a2200253 a 4500 vtls000045100 KUKTEM 20251114204421.0 100205t2009 my a f m 000 0 eng d THE0004792(Local) 201905151222 smfh 201108030914 Fida 201107132306 VLOAD 201002081445 kam 201002051607 kam UMP TP593 .M86 2009 rs Bc. Muna Suhaili Zakaria Production of bioethanol from tapioca starch using Saccharomyces cerevisiae : effects of pH and air flow rate / Muna Suhaili Binti Zakaria Production of bioethanol from tapioca starch using Saccharomyces cerevisiae [computer file] effects of pH and air flow rate Kuantan : UMP, 2009 47 p. : ill. (some col.) ; 30 cm. + 1 computer disc Project paper (Bachelor of Chemical Engineering (Biotechnology)) -- Universiti Malaysia Pahang - 2009 The effects of pH and air flow rate on fermentation process for bioethanol production in 2 L bioreactor using Saccharomyces cerevisiae were studied. Other conditions such as temperature, agitation and inoculum concentration were fixed at specific values. Two-step enzymatic hydrolysis of tapioca starch by commercially available α-amylase and glucoamylase were employed at the beginning of the process for glucose production. The cell growth study was conducted in order to observe the cell growth profile in the resulted sugar. The fermentation study was conducted in aerobic condition using 2 L bioreactor with various pHs (4, 5, and 6) and air flow rates (1.0, 1.5 and 2.0 L/min). Based on the results, the optimum pH and air flow rate were pH 5 and 1.0 L/min respectively. The highest yield of ethanol was 3.64 g/L which produced at pH and air flow rate at 1.0 L/min. Alcohol Fermentation 0 0 0 1 10000 10000 2019-09-04 0 TP593 .M86 2009 rs Bc. 0000042951 2019-09-04 00:00:00 1 2019-09-04 PSM 0 0 0 1 10000 10000 2019-09-04 0 CD 4007 | TP593 .M86 2009 rs Bc. 0000042952 2019-09-04 00:00:00 1 2019-09-04 PSM VIRTUA40 1669 1675 VTLSSORT0080*0200*0400*0900*1000*2450*2460*2600*3000*5020*5200*6500*6501*9992