Microwave –assisted pyrolysis aspen wood for production of valuable products under different temperatures

Abstract

The valuable pyrolysis products are prepared by pyrolysis of aspen wood using microwave heating at different pyrolysis temperature. High pyrolysis temperature restrains the production of the biochar, and contributes to the generation of the bio-gas. However, pyrolysis temperature has little influenced on the yield of bio-oil. Bio-oil mainly has the phenols, hydrocarbons, ketones, aldehydes and furans compound. The phenols compound of bio-oil generated from 500 ℃ is 54%. Pyrolysis temperature influences the composition and heating value of bio-gas, and the heating value of bio-gas produced at 700 °C is 13.41 MJ/Nm3. Biochar could be used to adsorb Ag+ from wastewater, which generates value-added A/char after adsorption. Ag+ adsorption and reduction process are systematically evaluated and analyzed. The generated Ag/char is employed as the catalyst for rhodamine B degradation. Besides, Ag/char has promising application potential in energy storage.

Keywords

• Aspen wood
• Microwave heating
• Pyrolysis product
• Rhodamine B
• Energy storage