Tokyo Metropolitan High School of Science and Technology, Tokyo, Japan
Email: MiyuuArai06@gmail.com (M.A.); akie@joyline.com (A.R.); yua85yua2006@gmail.com (Y.K.); katako0522@gmail.com (Y.K.); Naoyuki_Morita@education.metro.tokyo.jp (N.M.)
*Corresponding author
Manuscript received October 20, 2023; revised November. 15, 2023; accepted March 29, 2024, published July 18, 2024
Abstract—Reduction of carbon dioxide emissions from the use of fossil fuels is taking place in many countries. In addition, thermal power generation is damaging the environment. Japan has declared that it will reduce its emissions of greenhouse gases, including CO2, to zero by 2050. Japan is a forest-resource-rich country, and more than 70% of its land area is covered by forest. In recent years, however, Japan’s forestry industry has decreased owing to the increase of imported timber and the increase in concrete construction. In this study, synthetic hydrotalcite (Mg1−XAlX(OH)2(CO3)X/2·mH2O) was added to unused cedar wood during pyrolysis and gasification at low temperature, and its effect on the production of combustible gases, CH4, C2H4, C2H6, C3H6 and C3H8, was investigated. A mixture of cedar wood, which was undistributed after being cut in Japan, and a predetermined amount of synthetic hydrotalcite was placed in a metal reactor and subjected to pyrolysis under a nitrogen atmosphere at temperatures up to 500 °C. The mixture was then heated to a temperature of 500 °C. The components of the gas produced by pyrolysis were CH4, C2H4, C2H6, C3H6, C3H8, and CO2. The amount of synthetic hydrotalcite addition during pyrolysis affected the amounts of the combustible gases produced.
Keywords—biomass, pyrolysis, hydrotalcite, greenhouse gases, combustible gases, unused resources, forest resources
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Cite: Miyuu Arai, Akie Ri, Yua Kodama, Yuko Katako, and Naoyuki Morita, "Effect of the Addition of Hydrotalcite in the Pyrolysis of Unutilized Wood on Gas Production," International Journal of Chemical Engineering and Applications vol. 15, no. 2, pp. 6-10, 2024.
