Sapropel (of Greece words saprós – rotten and pelós – silt) – is the silt sediments of fresh water lakes. Sapropel has large quantities of organic and mineral substances, vitamins (B1, B12, B3, B6) and enzymes.
Sapropel has good absorption properties. Sapropel bounds soluble materials and protect it from extraction.
Sapropel is the cleanest natural fertilizer, therefore sapropel is recommended to use for ecological farming.
Also, sapropel can be used as fodder additive and raw material for cosmetic industry.
Quality certificate of the sapropel:
|
Name of parameter* |
Range |
|
Humidity, % |
50.0-65.0 |
|
Acidity (pH) (1M KCl) |
5.3-8.0 |
|
Content of the dry matter: |
|
|
Total organic materials, % |
35.0-88.0 |
|
Humus compounds, % |
31.0-78.0 |
|
Humus acid, % |
0.6-1.6 |
|
Fulvic acid, % |
1.3-3.3 |
|
Ash content, % |
19.0-65.0 |
|
Total nitrogen (N), % |
2.0-2.2 |
|
Metabolized phosphorous (P2O5), % |
0.1-0.3 |
|
Metabolized potassium (K2O), % |
0.7-1.5 |
|
Cadmium (Cd), mg×kg-1 |
0.87-1.22 |
|
Copper, mg×kg-1 |
16.8-31.8 |
|
Lead (Pb), mg×kg-1 |
9.5-15.0 |
|
Mercury (Hg), mg×kg-1 |
0.029-0.2 |
|
Nickel, mg×kg-1 |
30.6-32.7 |
|
Zinc, mg×kg-1 |
78.4-228.0 |
* - the exact value of parameters depends of lake type and the deep of bottom sediments | 
