Study On The Efficiency Of Enzymatic Hydrolysis Process Of Corn Stover

With the development of social economy, energy shortage become the main bottleneck of limiting social development, energy problem has risen to national security level. To replace the unsustainable dwindling fossil energy, countries around the world are developing various sustainable new energy, the biomass energy is one of the main research direction. And the lignocellulose is one of the good application prospect biomass energy. So far, the enzymatic hydrolysis process of lignocellulose is one of the main bottlenecks of the application of biomass ethanol market. The high cost and low degree of recyclable, and the large dosage of enzyme required for lignocellulose degradation, thereby increasing the cost of the whole process of bioethanol production. The pretreatment of cellulosic materials, the research of the optimal conditions of enzymatic hydrolysis process and the additions of inhibitors or activators are used to improve the efficiency of cellulose hydrolysis.In this paper, two methods have been used to improve the conversion rate, one isattempt to improve the efficiency with the addition of BSA and Calcium and magnesium ions, the other is utilized the aglae acid-hydrolyzed solution as buffer solution and add calcium ions. Reached the following conclusions:Proved by the experiment that BSA can prove the enzymatic hydrolysis reaction, in order to meet the principle of energy conservation, reduce the cost of industrialization, the optimal concentration of BSA was 0.5g/L. When the concentration of BSA was 0.5g/L, adding different concentration of calcium and magnesium ions have different degrees of promoting effect. The best calcium ion concentration is 0.5 g/L, magnesium ion concentration is 5 g/L.The algal hydrolysate was used to replace the buffer solution in the enzymatic process. And the algal hydrolysate could increase the conversion rate of enzymatic hydrolysis. The result indicated that the most active ingredient was existed in the molecular meight from 0 to 1000 of algal hydrolysate. The yield of enzymatic hydrolysis increased due to the combined effects of the molecular meight under 1000 of algal hydrolysate and a certain concentration of Calcium Ion.