Properties of Heat Treatment Alkaline Pulping Black Liquor with Aluminum Chloride

Abstract:

The black liquor contains a large amount of suspended solids, organic pollutants and toxic substances, the black liquor discharged directly into water bodies will lead to serious pollution. So we regards the alkaline pulping black liquor as a research object, using autoclave to heat the mixture of aluminum chloride and soda black liquor lignin. By changing the heating temperature and the pH before the heat treatment, we analyze the lignin and carbohydrates in the cooking liquid to study cleavage situation and the corresponding structural changes. The results show that the lignin content accompanied the increase in temperature, organic matter content decreased and part of the decomposition of organic matter. Without adjusting pH, the lignin content is small and ash (inorganic) content is higher.

• Periodical: Advanced Materials Research (Volumes 610-613)
• Pages: 2220-2223
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.610-613.2220
• Online since: December 2012
• Authors: Lan Ge*, Jie Lu, Rui Feng Yang, Yan Jun Liu
• Keywords: Aluminum Chloride, Heat Treatment, Lignin Separation, Pulping Black Liquor

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