METHOD OF OBTAINING CADMIUM SULPHIDE WITH APPLICATION OF SULPHATE-REDUCING BACTERIA

摘要

FIELD: chemistry.;SUBSTANCE: method of obtaining crystalline cadmium sulphide includes the placement of sulphate-reducing bacteria into a synthetic medium, which contains metals, and an addition of nutrients, including solutions of vitamins, salts, and cofactors. In cultivation used are sulphate-reducing bacteria Desulfovibrio sp. A2, and a synthetic medium, containing a source of cadmium ions - cadmium chloride solution. The concentration of cadmium ions in the synthetic medium is 150 mg/l. An aluminium foil is placed into a reservoir for cultivation, and cultivation is carried out at a temperature o 28°C for 18 days. The sediment, collected from the foil and the flask bottom, which contains cadmium sulphide crystals is dried.;EFFECT: invention makes it possible to obtain cadmium sulphide from sewage waters and liquid wastes of metallurgical enterprises.;2 dwg, 3 tbl, 1 ex