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Author(s): |
Quanyuan Wei, Beijing Municipal Research Institute of Environmental Protection, Beijing, China/Beijing University of Chemical Technology, Beijing, China
Yongshui Qu, Beijing University of Chemical Technology, Beijing, China
Xinxin Ma, Beijing University of Chemical Technology, Beijing, China
Guangqing Liu, Beijing University of Chemical Technology, Beijing, China |
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Abstract: |
The effect of 3 refining technique on properties of crude wood vinegar was tested. The results showed that the sedimentation filtration and distillation all made the index of the absorbency, acidity, soluble tar and refractivity be lower than the crude wood vinegar, and the refining techniques of the distillation, decompression distillation and rectification decreased the value of pH, but activated carbon adsorption increased the value of pH.
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