Produção Nacional
Biodegradação de hidrocarbonetos aromáticos policíclicos
2007; UNIVERSIDADE FEDERAL DE SANTA MARIA; Volume: 29; Issue: 1 Linguagem: Inglês
10.5902/2179460x9736
ISSN2179-460X
AutoresRodrigo Josemar Seminoti Jacques, Fátima Menezes Bento, Flávio Anastácio de Oliveira Camargo,
Tópico(s)Wastewater Treatment and Reuse
ResumoPolycyclic aromatic hydrocarbons (PAHs) are not degraded bymost of the microorganisms, due to the complexity of its chemical structureand low solubility in water. In spite of that, these compounds are generatedin petrochemical activities, with high potential for contamination of thenatural ecosystems. PAHs and its derivatives are know mutagenic andcarcinogenic compounds, being associated to the increase of cancerincidence in the lung, intestine, liver, and pancreas and in the humans' skinand animals. The use of microbial degraders is an alternative for PAHselimination to the atmosphere. Besides the selection of the microorganismswith proven capacity of degradation of these compounds, it is necessaryappropriate conditions for biodegradation as available water, inorganicnutrition, adequate pH and temperature, as well to increase PAHsbioavailability in soil due to strong tendency of sorption to minerals andorganics particules of soils and sediments. The objective of this revisionwas to discuss PAHs environmental behavior, microbial metabolism of thesecompounds and the environmental factors that influence the survival andthe activity of the PAHs microbial degrader community.
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