期刊
ENVIRONMENTAL PROGRESS
卷 25, 期 3, 页码 251-256出版社
WILEY
DOI: 10.1002/ep.10148
关键词
straw pulp; alkaline lignin; hydrogen peroxide; ammoxidation
A novel method that used hydrogen peroxide as an oxidizer to ammoxidize straw-pulp alkaline lignin was studied. The purpose of this research was to find a more efficient way to utilize technical lignin, which is a major pollutant in China. The ammoxidation process was employed to nitrogen-modify straw-pulp lignin using ammonia liquor and hydrogen peroxide. At the desirable conditions, such as 120 degrees C, 90 min reaction time, 20% hydrogen peroxide charge, and 20% ammonia charge, the nitrogen content of the ammoxidized product reached 11.62% and the ammonia nitrogen was 4.12%. The study showed that hydrogen peroxide could completely substitute for oxygen as an oxidizer for ammoxidizing alkaline lignin. Straw-pulp alkaline lignin can be effectively converted into slow-release fertilizer.
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