Biomass and Wastes for Bioenergy: Thermochemical Conversion and Biotechnologies

Ningbo Gao, Lei Zhang, Chunfei Wu
2018 BioMed Research International  
In response to the global environmental pollution and energy resource issues, biomass and wastes have obtained a widespread attention to be used for fuel and energy production. Now it is evident that wastes that could cause risks to the environment could be converted into useful energy via some realistic technologies. Using biomass and wastes as an energy resource not only solves environmental pollution problems, but also reduces the dependency on fossil fuels. Thermochemical and biological
more » ... and biological conversion of biomass and wastes are the two most important bioenergy conversion methods. In order to pursue the latest developments of bioenergy and keep the global academic communities up to date to the current advances in the Biomass and Wastes for Bioenergy, the applications of biomass in thermochemical conversion and biotechnologies have been discussed in 8 high-quality papers published in this special issue. The brief introduction for these works is listed as follows. The paper titled "Energy Analysis of a Complementary Heating System Combining Solar Energy and Coal for a Rural Residential Building in Northwest China" by X. Zhen et al. designed a work on energy efficiency of the system and the determination of thermal efficiency of a coal stove by using a prototype model. In this study, multiple linear regression was adopted to present the dual function of multiple factors on the daily heat-collecting capacity of the solar water heater. Their results showed that the orientation and the shade of solar water heaters had profound influences on heat-collection capacity compared to the reference solar water heater. Additionally, the allocation of the radiation of solar energy projecting into the collecting area of the solar water heater was only effectively utilized by 28%. Moreover, the results also showed that the main factors that led to the high heat loss were the mismatch between the working temperature of the radiator, collecting temperature of the solar water heater and the location of storage tanks. The paper titled "Experimental Study on Productivity Performance of Household Combined Thermal Power and Biogas System in Northwest China" by J. Kang et al. developed a method to create a heat, electricity, and biogas cogeneration system with low-temperature solar thermal collectors, photovoltaic solar power generators, and solar-powered thermostatic biogas digesters. The method was experimentally studied via two buildings in a farming village in northwestern China. Even though the ambient temperature reached down to −25 ∘ C, the temperature of the biogas digester was maintained at 27 ∘ C±2 for thermostatic fermentation. After optimization, the energy-saving rate was improved from 66.2% to 85.5%. This installation reduced CO 2 emissions by approximately 27.03 t, and the static payback period was 3.1 yr. The results indicated that the system was highly economical, energy efficient, and beneficial for the environment. The paper titled "Neural Network Prediction of Corn Stover Saccharification Based on Its Structural Features" by L. Gao et al. developed a neural networks model, which was demonstrated for the prediction of the corn stover saccharification based on the features without enzymatic hydrolysis. By using this method, the predicted value of corn stover digestibility was very similar to the actual determined value of corn stover digestibility. A fast approach for bioenergy crops Hindawi
doi:10.1155/2018/9638380 fatcat:s5dvpmrjabclnknkzb6z7mhyxy