Effect of Anoxic Atmosphere on the Physicochemical and Pelletization Properties of Pinus massoniana Sawdust during Storage

Hongli Chen, Liqiang Zhang (), Zhongliang Huang, Zijian Wu, Mengjiao Tan, Xuan Zhang, Longbo Jiang, Xiaoli Qin, Jing Huang and Hui Li ()
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Hongli Chen: College of Mechanical and Electrical Engineering, Central South University of Forestry and Technology, Changsha 410004, China
Liqiang Zhang: College of Mechanical and Electrical Engineering, Central South University of Forestry and Technology, Changsha 410004, China
Zhongliang Huang: State Key Laboratory of Utilization of Woody Oil Resource, Hunan Academy of Forestry, Changsha 410004, China
Zijian Wu: State Key Laboratory of Utilization of Woody Oil Resource, Hunan Academy of Forestry, Changsha 410004, China
Mengjiao Tan: State Key Laboratory of Utilization of Woody Oil Resource, Hunan Academy of Forestry, Changsha 410004, China
Xuan Zhang: State Key Laboratory of Utilization of Woody Oil Resource, Hunan Academy of Forestry, Changsha 410004, China
Longbo Jiang: College of Environmental Science and Engineering, Hunan University, Changsha 410082, China
Xiaoli Qin: State Key Laboratory of Utilization of Woody Oil Resource, Hunan Academy of Forestry, Changsha 410004, China
Jing Huang: State Key Laboratory of Utilization of Woody Oil Resource, Hunan Academy of Forestry, Changsha 410004, China
Hui Li: State Key Laboratory of Utilization of Woody Oil Resource, Hunan Academy of Forestry, Changsha 410004, China

IJERPH, 2022, vol. 20, issue 1, 1-16

Abstract: The 34-day anoxic storage of Pinus massoniana sawdust (PS) in a sealed constant temperature and humidity chambers was carried out to simulate the limited-oxygen storage process inside piles at industrial scale. The effects of anoxic storage on feedstock’s properties and pelletization process were investigated with respect to elemental composition, dry matter loss, thermogravimetric characteristics, energy consumption, pellets’ density, and microbial communities, etc. After anoxic storage, the microbial community of PS samples was altered, such as the fungi content ( Clonostachys , Strelitziana , and Orbilia , etc.), resulting the elemental composition of PS was altered. Thus, the cellulose and ash content of the stored PS were increased, while the hemicellulose, volatile, and fixed carbon were decreased. The energy consumption was increased 7.85–21.98% with the increase in anoxic storage temperature and with the additive of fresh soil collected from PS field in storage process. The single pellet density was altered slightly. Meanwhile, the moisture uptake of PS pellets was decreased. After anoxic storage, the combustion behavior of the stored PS became more stable. The results can be applied directly to guide the development of commercial PS storage and pelletization process currently under development in Asia, Europe and North America.

Keywords: biomass; anoxic storage; energy consumption; microbial communities; combustion characteristic (search for similar items in EconPapers)
JEL-codes: I I1 I3 Q Q5 (search for similar items in EconPapers)
Date: 2022
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