1、Development of Biomass in Three Gorges Zone,Contents,1. Introduction 2. Our local biomass and development 3. Perspectives 4. Current problems, 勁舞sf,1. Introduction,biomass resources ,such as forestry products, agricultural by-products, municipal, and industrial solid fibrous wastes to control the ne

2、t emission of CO2 renewable sustainable abundantly available reduce the petroleum dependence.,However, the conversion system of biomass to energy is the matter of question. How to develop an high-efficiency technology for the transformation of biomass is the key to the question. At present, there ar

3、e three kinds of conversion systems of biomass .,Liquid Products,Biomass,Physical method,Chemical method,Bioengineering method,Solid fuel,Gas Products,H2、CH4.,Lactic acid、Fuel ethanol、 methanol、biodiesel,Chemical transformation of biomass (cellulose),high temperature gasification pyrolysis Catalysis

4、 Rh/CeO2 and Rh/CeO2/SiO2 Disadvantages: the formation of tar (complex liquid mixture of oxygenates and higher hydrocarbons), and char (the carbonaceous solid) and the tough conditions of the gasification reaction,Chemical transformation of biomass (cellulose),Catalysis Rh/CeO2 and Rh/CeO2/SiO2 adva

5、ntages: low temperatures (823K-923K) low impurity content,Biotransformation of biomass,Anaerobic digestion (AD) -biomethane Fermentation-lactic acid /ethanol/biodiesel Advantages: mild condition friendly environment good selectivity large scale-up,2. Our local biomass and development by biotransform

6、ation,2. Our local biomass I - agricultural products,rice、corn sweet potato rape orange (navel orange),Sweet potato,Planting area: 6 million mu(1mu=666.7m2) Production :1.8 billion kg Seeding period: April every year Harvest time : September every year Soil : dry farming or barren land Starch contai

7、n:28%(wet), 40%(dry) Price: 0.10-0.20 RMB yuan (fresh ),Rape,Planting area: 1.9million mu (the largest one in our country) Production: 2 million tons Rapeseed Containing oil: 35-50% Rapeseed price :2,430 RMB yuan/ton(2005),Development 1-fuel ethanol,Pilot scale-up 50L fermentation fuel ethanol produ

8、ction using sweet potatoes,Process of fuel ethanol,Strain: Saccharomyces cereviciae resistant to high temperature(50 ) and high degree of alcohol(15%)- Angel Yeast Co. Ltd offered. Technology: SSF and membrane separate Feedstock: sweet potato (leaf 、stalk ） Enzymatic system: endoglucanase and exoglu

9、canase and -glucosidase) and other specific enzymes,SSF technology: Simultaneous sarccharification and fermentation using cellulase system (including endoglucanase and exoglucanase and -glucosidase) and other specific enzymes.,Development 2-biodiesel,Biodiesel from rapeseed oil Technology: biocataly

10、zed by double-layer alginate -supported yeast,Our local biomass II-agricultural residues,corn cob wheat straw cotton rod and rape rod animal (cattle pig ) dung,Our local biomass III -industrial waste,Angel Yeast Co., Ltd 20,000 tons baker s yeast / 45,000tons waste (a little sugar, much cellulose ),

11、These biomass resources have complex compositions. We used anaerobic digestion to convert these biomass II and III to biomethane.,Development-biomethane,Biosynthesis pathway of biomethane and hydrogen,Our Goals one village-one biogas station,Demonstration project of biomethane by anaerobic digestion

12、,3. Perspectives,Developing industrial production of fuel ethanol from sweet potatoes Building the demonstration project of biomethane by anaerobic digestion Pilot scale-up research on the biodiesel from rapeseed oil.,4.Current problems,(1) Improving membrane separate technology for industrial fuel

13、ethanol from sweet potatoes or cellulose，further lowering the separation cost of ethanol-water (2) Designing high efficiency reactor foe anaerobic digestion,(3) Establishing the good system (policy) for building the demonstration project of biomethane by anaerobic digestion to carry out “one village