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Stimulated biodegradation of all alkanes in soil
- Source :
- Chemosphere. 278:130444
- Publication Year :
- 2021
- Publisher :
- Elsevier BV, 2021.
-
Abstract
- This study aim to investigate the biodegradation of all alkanes in soil by adding stimulater and indigenous bacteria. The experiments were carried out by adding native bacteria and the stimulater to the soil S1 (total petroleum hydrocarbon (TPH) = 22,745 mg/kg) and soil S2 (TPH = 13,833 mg/kg) to explored the effect and mechanism of the stimulated biodegradation of all alkanes in soil. The results showed that most alkanes were used as the main carbon source of TPH in the late stimulation stage, so that all alkanes could be biodegraded by stimulating. The biodegradation of C10 - C19 (4527 mg/kg) and C20 - C30 (8530 mg/kg) were much higher than the stimulated biodegradation of partial alkanes, which indicated that the biodegradation effect of TPH was greatly improved. In addition, for the stimulated biodegradation of all alkanes group, the relative activity of TPH (TPH biodegradation/DOC consumption) was nearly 5 times that of the stimulated biodegradation of partial alkanes group in the late stimulation stage. The amount of ammonia allocated to TPH in the late stimulation stage was nearly 10 times that of DOC, and the organic matter components changed greatly in the early stimulation stage, but there was basically no change in the later stage. It showed that the hydrocarbon degraders in the stimulated biodegradation of all alkanes group used DOC as the main carbon source in the early stimulation stage and mainly degrade TPH in the later stage, which improved the biodegradation efficiency of petroleum hydrocarbons.
- Subjects :
- endocrine system
Environmental Engineering
Health, Toxicology and Mutagenesis
0208 environmental biotechnology
02 engineering and technology
010501 environmental sciences
01 natural sciences
Soil
Ammonia
chemistry.chemical_compound
Alkanes
Carbon source
Soil Pollutants
Environmental Chemistry
Organic matter
Soil Microbiology
0105 earth and related environmental sciences
Indigenous bacteria
chemistry.chemical_classification
biology
Public Health, Environmental and Occupational Health
General Medicine
General Chemistry
Biodegradation
biology.organism_classification
Pollution
Hydrocarbons
020801 environmental engineering
Biodegradation, Environmental
Petroleum
Hydrocarbon
chemistry
Environmental chemistry
Total petroleum hydrocarbon
Bacteria
Subjects
Details
- ISSN :
- 00456535
- Volume :
- 278
- Database :
- OpenAIRE
- Journal :
- Chemosphere
- Accession number :
- edsair.doi.dedup.....1fa24a1d75b784108ede3e181183561f