SU451233A3 - Fertilizer based on ion exchanger and nitrogen-containing component - Google Patents

Description

(54) FERTILIZER BASED ON ION EXCHANGER AND NITROGEN-CONTAINING COMPONENT

The main fertilizer of phosphorus and potassium was mixed in with various nitrogen compounds loaded with ion exchangers containing 2 g of nitrogen and filled with Mncherlich vessels. The experiments were carried out at 60% water saturation with respect to the maximum water-holding capacity of the soil. Conducted 5 nokosov. The sum of harvests in the first and second year is given in table. 1, in which experiments 1-3 and 6 relate to experiments with exchange, many, containing sulfohogranu as an active group, experiments 4-5 - to experiments with exchangers containing carboxyl group. Experiments 1-5 show the results obtained by applying the proposed salts, and the samples 6-7 are comparative experiments.

Table I

In order to establish the loss of leaching of various nitrogenous fertilizers, during the second series of experiments, the soil was saturated with water for 5 days before cutting and sprayed each vessel with 500 ml of water. This corresponds to the amount of reclaimed rainwater of 16-17 mm. The amount of fees is given in table. 2

table 2

The ion exchange salts used to perform the above experiments were made as follows.

Example 2. 1100 ml of strongly acidic cation-exchanger in the H-form (separated polystyrene, crosslinked with 8% divinylbenzene) in a filter tube were subjected to percillon using the amount of aqueous guapidine solution required for complete saturation. The total capacity of the ion exchanger was 2.0 voln / l. The guanidine-rich exchic was washed with 2500 ml of water. Got 1000 ml of nitrogen fertilizer containing 2.2 moles of guanidine per liter.

Example 3. To 1100 ml of the same cation exchanger in the P-form in a beaker was mixed with an equivalent total capacity amount of an aqueous solution of guanyl urea, stirred for 30 minutes at and sucked dry. Received 1000 ml of nitrogen fertilizer containing for each liter of 2.2 mol

guapyl urea.

Example 4. 1100 ml of the ion exchanger described in example 1 were suspended in 2000 ml of water and 2.3 mol of solid melamine were mixed in. The suspension was unmixed and heated until melamine was completely dissolved. After cooling the reaction solution, the ion exchanger was washed three times with 1000 ml of cold water. Received 1000 ml of nitrogen fertilizer containing 2.2 mol of melamine per liter.

Example 5. 1000 ml of a weakly acidic ion exchanger containing a carboxyl group based on polyacrylic acid, crosslinked

divinylbenzene, and the P-form was suspended in 2000 ml of water. The total capacity of the exchanger is 4.7 valine / l. A quantity of guanidine carbonate equivalent to the total capacity of the exchanger was mixed in with the suspension;

It was heated for 5 hours until, and carbonic acid strongly exuded. Then, the non-exchanger was sucked off and washed several times with water. Got 14bO ml of nitrogen booster containing for each liter 2, U5 mole of guanidine.

Example 5. 1000 ml of the same ion exchanger containing the carboxyl group as in Example 4 were transferred to suspension in 2000 ml of water and a quantity of guanyl urea was gradually added in an amount sufficient to reach the RP 8 value of the reaction solution. Then the exchanger was sucked off and re-washed with water. 1500 ml of nitrogenous fertilizer containing 2.8 moles of guanyl urea per liter were obtained.

Example 6. The method was carried out as in example 1, with the only difference being that ammonia was used instead of guanidine. Got

1000 ml of nitrogen fertilizer, containing, however, 2.2 mol of ammonia per liter.

Subject invention

Claims (2)

I. Fertilizer based on ion exchanger and nitrogen-containing component, characterized in that, in order to achieve a slow and long-lasting effect, compounds containing a sulfonic acid group, and / or carboxyl, and / or phosphoric acid or inorganic zeolites and carbon dioxide derivatives of the general formula used as the nitrogen-containing component / Nh-r Shr where X is oxygen and imino; R is hydrogen and the residue is CX - NH2; R is hydrogen, amino, and groups CX-NH2 and NH-CX-NHa; or cyclic compounds such as melamine, guanine or ammeline are used. 2. Fertilizer according to claim 1, characterized in that the nitrogen-containing component is used in a concentration of 1-3 mol per liter of fertilizer liquid.