Manure, Crop Straw Fermentation Hydrogen Production Potential

Today considering global energy crisis and environmental pollution, so looking afer the new and renewable clean energy resource has been popular with exploitation in energy field. Due to it's a good many advantages, hydrogen will become an ideal fuel in the future.Now, because the normal methods in which hydrogen can be producted are not economical, many countries in the world are studying and developing new effective methods for hydrogen production.As a agricultural country, there are plenty of resources in our country, according to statistics, every year there are 3.4826 billion tons dungs and 0.62 bilbon tons straws in rural of China, these organic wastes constitute the main garbages of the rural, so applying anaerobic biological fermentation method to produce hydrogen from the dungs and straws has important meanings whether in recovering energy or managing the environment.In order to studied hydrogen production potential of different organic wastes, we use pig dung cow dung chicken dung, horse dung and rice straw corn straw barely straw wheat straw bean straw which are the main organic wastes in rural as the materials, under anaerobic conditions, at temperature of 25C, controlling pH at 4.5~5.5 with lactic acid, some batch culture experiments concerned were carried out with anaerobic digestive sludge as inoculums of hydrogen-producing bacteria.The experiments indicate that using the dungs and straws to produce hydrogen are feasible. The hydrogen production potential of rice straw is 76.1mL/g TS, 90.5mL/g VS; corn straw is 90.9mL/g TS, 95.4 mL/g VS; barley straw is 95.2 mL/g TS, 102.9 mL/g VS; wheat straw is 29.7 mL/g TS, 31.1 mL/g VS; horsebean straw is 67.9 mL/g TS, 76.4 mL/g VS; soybean straw is 31.0 mL/g TS, 32.6 mL/g VS; pig dung is 162.4 mL/g TS, 202.7 mL/g VS; cow dung is 40.5 mL/g TS, 51.4 mL/g VS; chicken dung is 42.0 mL/g TS, 63.6 mL/g VS; horse dung is 31.4 mL/g TS, 37.4 mL/g VS.