Recycling method of waste powdered activated carbon
A powder activated carbon, activated carbon technology, applied in separation methods, filter regeneration, chemical instruments and methods, etc., to ensure stable operation, prolonged adsorption period, and good degradation effect.
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[0045] Example 1 The specific surface area of activated carbon finally obtained is 1118.5m 2 / g, the iodine adsorption value is 808.1mg / g, the methylene blue adsorption value is 210.5mg / g, and the regeneration rate is 90%.
[0046] The quality of activated carbon before and after recovery is comparatively analyzed, as shown in Table 1 below:
[0047] Table 1
[0048] project new charcoal recovered charcoal Exterior black fine powder black fine powder identify Positive reaction Positive reaction Decolorization power (0.1g to remove 0.15% anhydrous methylene blue solution) ml, ≧ 10.0 10.0 Iron salt (%)≦ 0.10 0.10 Heavy metal (%)≦ 0.003 0.003 water soluble residue 0.32 0.39 Sulfide No reaction No reaction
[0049] Hulunbeier Northeast Fufeng Biotechnology Co., Ltd. has an annual output of 200,000 tons of sodium glutamate, and 5,000 tons of waste powder activated carbon produced by...
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