Journal
QUIMICA NOVA
Volume 34, Issue 2, Pages 218-221Publisher
SOC BRASILEIRA QUIMICA
DOI: 10.1590/S0100-40422011000200009
Keywords
bioremediation; polycyclic aromatic hydrocarbons; glycerol
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Funding
- Petroleo Brasileiro S.A.
- CNPq
- CAPES
- FAPERJ
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Alternatives for the removal of high-molecular weight polycyclic aromatic hydrocarbons (HWM-PAH) from soil were tested by adding fertilizer or glycerol, as well as the combination of both. Experiments were carried out for 60 days in reactors containing a HWM-PAH-contaminated soil (8030 mu g kg(-1)), accompanied by pH monitoring, humidity control and quantification of total heterotrophic bacteria and total fungus. Fertilizer addition removed 41.6% of HWM-PAH. Fertilizer and glycerol in combination removed 46.2%. When glycerol was added individually, degradation reached 50.4%. Glycerol also promoted the increase of degradation rate during the first 30 days suggesting the HMW-PAH removal occurred through cometabolic pathways.
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