Abstract:
PURPOSE: A method for extracting butyric acid from fermented liquid and chemically converting the butyric acid to a bio fuel is provided to produce butyl butyrate as the bio fuel. CONSTITUTION: A method for producing bio fuel from fermented butyric acid comprises: a step of providing fermentation liquid containing butyric acid through fermentation of carbohydrate to liquid extracting tower; a step of using trialkylamine as extraction solvent to produce the butyric acid in the form of trialkylammonium butyrate; a step of adding the extracted trialkylammonium butyrate to isolate butyric acid and trialkylamine; a step of supplying trialkyl amine to the liquid extracting tower as a extraction solvent; and a step of reacting the butyric acid with butanol to convert to butyl butylate.
Abstract:
A method for preparing bio-butanol is provided to prevent the deterioration of the activity of microorganism and to improve the productivity and economical efficiency of bio-butanol. A method for preparing bio-butanol comprises the steps of pulverizing, washing and hydrolyzing the biomass or the organic waste; inoculating Clostridium bacteria to the obtained carbon source and culturing it by anaerobic culture to collect the culture solution containing butyric acid and a hydrogen gas; adding butanol in a mole identical to that of butyric acid to the culture solution; adding a strongly acidic catalyst such as zeolite, heteropoly acid, silica-alumina, Nafion resin, p-toluenesulfonic acid. SO4^2-/ZrO2 or SO4^2-/TiO2-La2O3 to convert the butyric acid and butanol of the culture solution into butyl butyrate; and reacting the butyl butyrate with the collected hydrogen by using a catalyst of (CuO)a(ZnO)b(CoO)c(FeO)d(YO)e to produce butanol, wherein a is 0.1-80, b is 0.1-60, c is 0.1-80, d is 0.1-20, e is 0-5, and Y is W, Pd, Pt, Ru, Cs, Ma, Ca or Ba.
Abstract:
A method for producing hydrogen is provided to prevent anaerobic microorganisms for generating hydrogen from being washed out even at a short HRT(Hydraulic Retention Time), thereby producing a large quantity of hydrogen, by using a trickling bed reactor uniformly filled with porous carriers. A substrate is loaded on a trickling bed reactor, wherein the trickling bed reactor is uniformly filled with carriers on which anaerobic microorganisms are attached. The loaded substrate is passed through a bio-reactor, thereby generating hydrogen through fermentation by the anaerobic microorganisms of the carriers. A residual substrate, which hardly reacts with the anaerobic microorganisms, is re-circulated and re-loaded. Further, the carrier is hydrophile property carrier or hydrophobic property carrier.