Overview about Bio-Energy and Food Security

Abstract

Abstract. Introducing the development background of bio-energy in our country,the present situation and trends of international bio-energy research,the bio-energy development path under the constraint of food security,telling the study meaning of bio-energy and food security problem,and doing some study and prospect on this issue to our country. Bio-energy is divided into three generations according to the extractive technology and the use of material.The first generation is based on the sugar and starch to produce alcohol or oil crops to produce bio-diesel.And it is also the bio-energy that has been realized industrialization development.The two generation is based on the cellulose or lignin to produce alcohol,but it is still on the way[1].The third generation start the study of diesel technology using the aquatic micro-algae organisms. At present the main form of the bio-energy is biogas,Boyden production,bio-diesel and fuel alcohol[2]. Because of the huge number of organisms on earth, according to biologists estimate, earth annual growth biological energy volume of about 1400 - 1800 tons ( dry weight ), ten times to the current world total energy consumption, so Bio-energy has wide use value and has great historical significance to take place exhaustible resources such as coal oil and so on.