PROCESS FOR THE PREPARATION OF SOIL IMPROVERS,CONTAINING CA-HUMATE,FROM FERMENTATION SLOPS AND PEATS,AND PRODUCT THEREOF

摘要

A mixture of aqueous fermentation spent liquor and peat having a pH greater than 6 and containing calcium in an amount greater than the base exchange capacity of the peat is first formed and then heated at 100-120 DEG C. The pH may be obtained by the addition of calcium as CaO or CaCO3 and/or ammonia to the spent liquor and/or to the mixture. The spent liquor may be from the production of alcohol or lysine. The spent liquor and peat may be mixed at elevated temperature. The mixture may be heated in a closed vessel.