Research regarding bioremediation of the soil polluted with petroleum hydrocarbons, in the green house

Abstract

On the background where no absorbent was used, the highest rate of degradation of the petroleum hydrocarbons (47%) was attained in the variants treated with the AH-SH fertilizer, the highest rate of degradation of the hydrocarbons (45%) on a background without absorbent was attained in the variants treated with potassium humate and microelements along with the bacterial inoculant. Upon utilization of 16 t/ha peat as absorbent without using any microbial inoculant, the highest rate of degradation (43%) of the petroleum hydrocarbons was attained following the fertilization with AH-SG1, upon application of the bacterial inoculant, the highest rate of degradation of the petroleum hydrocarbons (47%) was provided by fertilization with AH-SG2. Upon application of a 16 kg/ha dose of Zeba absorbent without any bacterial inoculant, the highest rate of degradation (47%) of the petroleum hydrocarbons, 45 days after the application of the treatments, was provided by the fertilizer AH-SG2. Upon treatment with 16 kg/ha Zeba absorbent and application of the bacterial inoculant, the highest rate of degradation (52%) was provided by the fertilizer AH-SG1. The second highest rate of degradation, 51%, was provided by the fertilizer AH-SG1. Upon application of 32 kg/ha Zeba absorbent without any bacterial inoculant, the best results in the bioremediation process were obtained following the treatment with the fertilizer AH-SG2 in a dose of 650 l/ha plus 64 kg/ha glucose. In these variants, the level of the petroleum hydrocarbons dropped by 59% after just 45 days of treatment or 60 days after the pollution. Upon application of 32 kg/ha Zeba absorbent along with the bacterial inoculant, the highest rate of degradation of the petroleum hydrocarbons (54%) was provided by the fertilizer AH-SG1. The second highest rate – 53% – was provided by the fertilizer AH-SG2.