高效分解磷尾矿粉复合微生物菌剂的制备

Preparation of Compound Microorganisms with Efficient Decomposition of Phosphate Tailings Powder

为了制备能够高效分解磷尾矿粉的复合微生物菌剂,对具有较好解磷效果的黑曲霉、乳酸菌、醋酸菌和巨大芽孢杆菌进行复配,并对复配后的解磷效果进行研究。结果表明,上述4种菌的最佳复合配方为黑曲霉5%、乳酸菌4%、醋酸菌3%、巨大芽孢杆菌5%,在此条件下,分解后的磷尾矿粉速效磷含量为2 442.50mg/kg,磷转化率达到78.7%,明显优于单菌株解磷效果。

The proportion and phosphate-dissolving effect of compound microorganisms which were composed of Aspergillus niger, lactic acid bacteria and acetic acid bacteria and Bacillus megaterium were studied. The results showed that the optimal proportion of compound microor- ganisms was as follows. Aspergillus niger 5 %, lactic acid bacteria 4%, acetic acid bacteria 3 % and Bacillus megateriurn 5%. Under this condition,the content of dissolved phosphorus was 2 442.50 mg/kg, and the phosphorus conversion rate reached 78. 7%, which was better than the single strain.