การเป่าไล่ด้วยแก๊สสำหรับการผลิตไบโออะซิโตน บิวทานอล เอทานอลจากชีวมวลสาหร่าย

Abstract

Biobutanol has been proposed as an alternative fuel. Butanol can be produced from Acetone Butanol Ethanol (ABE) fermentation. One obstacle for ABE fermentation is the toxicity of butanol at high concentration during ABE fermentation which could potentially inhibit the metabolic pathways of butanol producing bacteria that causes low butanol productivity. This study aimed to create an integrated gas stripping process for butanol recovery from the mixed solution containing butanol, acetone, ethanol, acetic acid, butyric acid and glucose. The different stripping gas flow rate (1, 2 and 3 L/min) and stripping gas type (nitrogen gas, H2/CO2 gas mixture at 20-60%H2) on the gas stripping process were studied. The highest gas stripping efficiency achieved when nitrogen was used as stripping gas at the flow rate of 3 L/min. While, the highest stripped ABE condensation efficiency was observed when the gas mixture of 20% H2 was used as stripping gas at flow rate of 1 L/min. The butanol removing rate from stripper of 1.19, 1.34, 1.29 and 1.48 g/L.h was found when 20% H2, 40% H2 60% H2 and 100% N2, respectively was used. The recovered butanol in condensate has higher concentration of 80-170 g/L. The result indicated that, in the system the and produced higher energy requirement The effect of tanol concentration that can be further purified with less medium, Juegrated stripping process is effective to reduced butanolABE1 the using also This ion using butanol lum loading and initial glucose concentration on beijerinckii TISTR 1461 was studied. The result show that of 0.3 g/g glucose was achieved from the fermentation concentration of 60 g/L loaded with 10% v/v inoculum and using potential of producing butanol from rad algae G. tenuistipitata was tested. The result shown that 0.03 g butanol/g algae was acheived. demonstrated a feasible approach of converting aquatic biomass of however, to reach the highest yield, fermeatation process developmentto be further studied.