FIELD: process engineering.
SUBSTANCE: invention relates to production of sorbents to be used in cleaning water solution of heavy metals and oil products. Alfalfa extraction wastes are used as initial stock. Wastes are washed by water, dried at 45-55°C to fixed weight, and ground to select 0.1-0.8 mm-fraction and to introduce β-cyclodextrin in amount of 3-5 wt % into fraction. Additionally, sorbent is pelletised.
EFFECT: expanded range of absorption activity.
2 cl, 4 ex
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