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Abstract
As a major agricultural province in China, Northeast China produces a lot of biomass while its grain yield is high. Open burning is an efficient and convenient way to remove biomass. However, air pollutants (PM2.5, CO, VOCs) will be released in the process of biomass combustion, which will have a certain impact on Regional Environmental quality, atmospheric visibility and human health. Because of the various type of biomass, their combustion products and effects are different. In this study, there collected peanut hull, rice husk, straw and wood particles, and carried out the simulated combustion experiment in the laboratory environment simulation chamber. The inorganic elements, water-soluble ions and speciation analysis of combustion products were determined. The results showed that the content of Zn was higher than that of carcinogenic element in the eight inorganic elements after combustion. The water-soluble ion emission factors of wheat straw and wood particles are larger than those of peanut hull and rice husk, and the water-soluble ions are mainly K+and CL. Through the morphology analysis of combustion products, it can be seen that different types of biomass have different morphology after combustion, which are mainly strip, column and particle. Combined with energy spectrum analysis, it is found that the content of K and CL is high. The results lay a theoretical foundation for the study of local biomass combustion and provide data for the determination of local biomass combustion emission characteristics.
Highlights
Typical biomass combustion mainly includes four types: forest fire, open-air burning of agricultural straw, burning of wood and straw as agricultural fuel [1]
As a large agricultural country in the world, a large amount of straw is produced in the process of grain planting, and its open burning and indoor fuel consumption are the main forms of biomass combustion in China [7], and most of them are concentrated in Northeast China, North China Plain and Yangtze River Delta region [8]
At the same time, scanning electron microscope (SEM) was used to analyze the combustion products and particulate matters of different biomass the results lay a theoretical foundation for the study of local biomass combustion characteristics, and provide data support for the determination of local biomass combustion emission characteristics
Summary
Typical biomass combustion mainly includes four types: forest fire, open-air burning of agricultural straw, burning of wood and straw as agricultural fuel [1]. As a large agricultural country in the world, a large amount of straw is produced in the process of grain planting, and its open burning and indoor fuel consumption are the main forms of biomass combustion in China [7], and most of them are concentrated in Northeast China, North China Plain and Yangtze River Delta region [8]. There are few studies based on local biomass incineration This limitation is mainly due to the variety of biomass and different combustion characteristics [12], so it is necessary to carry out combustion characteristics of different types of biomass in order to provide more accurate data support for the determination of local biomass combustion emissions and emission factors. At the same time, scanning electron microscope (SEM) was used to analyze the combustion products and particulate matters of different biomass the results lay a theoretical foundation for the study of local biomass combustion characteristics, and provide data support for the determination of local biomass combustion emission characteristics
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