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Title: Process for the production of a fertilizer from bark

Patent ·
OSTI ID:6327114

The production of a fertilizer from tree bark is improved by a process of the type wherein crushed waste bark is treated together with waste molasses under elevated pressure and at a temperature of 75 to 140/sup 0/C. For a time of 10 min to 2 h. Said time is dependent on the treatment temperature, and the improvement comprises adding yeast to the waste molasses, and maintaining its temperature at 30 to 40/sup 0/C for 35 to 45 hours, whereby its ph value decreases to 3-4, before it is mixed with the ground waste bark.

Assignee:
Arex Oy (Finland)
Patent Number(s):
US 4246018
OSTI ID:
6327114
Resource Relation:
Patent Priority Date: Priority date 11 Apr 1978, Finland
Country of Publication:
United States
Language:
English