FIELD: chemical industry. SUBSTANCE: stillage residue resulting from furfurol production and containing 5-20 wt % resin is mixed with concentrated sulfuric acid at a 3-5:1 weight ratio at 20-50 C for 3-4 min. The mixture is molded by dispersion in an immiscible medium at a temperature of 90-120 C. The granules are solidified, carbonized and activated. EFFECT: improved properties of the adsorbent. 2 cl, 2 tbl
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Authors
Dates
1994-09-15—Published
1992-07-22—Filed