Key Laboratory of Renewable Energy of Ministry of Agriculture

Zhengzhou, China

Key Laboratory of Renewable Energy of Ministry of Agriculture

Zhengzhou, China

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Ren T.,Henan Institute of Science and Technology | Ren T.,Key Laboratory of Renewable Energy of Ministry of Agriculture | Ma X.,Henan Institute of Science and Technology | Xu G.,Key Laboratory of Renewable Energy of Ministry of Agriculture | And 2 more authors.
Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering | Year: 2011

The front technology of biomass pyrolysis used for biomass energy research and development has been more widely appreciated. The pyrolysis characteristics and dynamics of corn stalks by steam explosion pretreatment were studied using the thermal gravimetric analysis (TGA) method under different heating rate, i.e., 10°C, 20°C, 30°C, 40°C and 50°C/min.The terminal temperature was 800°C and the high-purity N2 was used as reacting and protecting gas. The results indecated that the pyrolysis characteristics and parameters of corn stalks by steam explosion were significantly changed, and maximum thermal decomposition rate increased by 34.57% under the same heating rate. Thermogravimetric dynamic parameters of samples were calculated by the methods of Coats-Redfern and Kissinger, respectively; activation energies of treated corn stalks reduced 24.13%-32.56% compared with corn stalks, and frequency factor improved 8%-10%.


Liu L.,Henan Agricultural University | Liu L.,Key Laboratory of Renewable Energy of Ministry of Agriculture | Liu S.,Henan Agricultural University | Liu S.,Key Laboratory of Renewable Energy of Ministry of Agriculture | And 3 more authors.
Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering | Year: 2011

Peanut vine was used as material to study its anaerobic fermentation biogas potential.The results showed that the potential of biogas fermentation of peanut vine was up to 0.349 m3/KgTS. By using orthogonal test method, its optimization of process parameters was studied. The results showed that fermentation temperature, total solids concentration, pH value had different impacts on the biogas fermentation. Among all the parameters, fermentation temperature and total solids concentration significantly influenced the biogas yield and methane production. The optimum process conditions were as follows: fermentation temperature was 35°C, the total solids concentration was 20%, pH was 7.5, proportion of inoculation was 1:1. Moreover, the rate of biogas was improved significantly by adding a certain percentage of cow dung. It provided important value for the biogas fermentation of peanut vine.


Ren T.-B.,Henan Institute of Science and Technology | Ren T.-B.,Key Laboratory of Renewable Energy of Ministry of Agriculture | Xu G.-Z.,Key Laboratory of Renewable Energy of Ministry of Agriculture | Ma X.-Q.,Henan Institute of Science and Technology | And 3 more authors.
Gaoya Wuli Xuebao/Chinese Journal of High Pressure Physics | Year: 2012

In the research fields of lignocellulosic materials, the physical-chemical properties are an important foundation for the resource conversion. Employing thermal gravimetric analysis, Fourier transform infrared spectroscopy, X-ray diffraction and scanning electron microscopy methods, physical-chemical properties changes of steam exploded corn stalk were studied. The results of analysis showed that pyrolysis region of steam exploded corn stalk had a wider temperature range compared with the control substance, during which the maximum self-heating rate increased significantly and activation energies (E) decreased by 16.25%. The characteristic peak absorption intensity was significantly different. The hierarchical structure of the cell wall was completely destroyed, and crystallinity of lignocellulose decreased by 14.57%. Based on this analysis, a mechanism model of steam explosion pretreatment was constructed. The results indicate that physical-chemical properties of corn stalk are significantly affected by steam explosion pretreatment.

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