In situ aerobic cometabolism of chlorinated solvents: A review

• Tipo: Outra Publicação em Revista Científica Internacional
• Data: 2015

Autores

Frascari, D (Autor) Outra; Zanaroli, G (Autor) Outra; Anthony Steven Danko (Autor) FEUP

Revista

Título: Journal of Hazardous Materials

Vol. 283

Páginas: 382-399

ISSN: 0304-3894

Editora: Elsevier

Indexação

ISI Web of Knowledge - 1 Citação

Scopus - 1 Citação

Outras Informações

ID Authenticus: P-009-WHZ

DOI: 10.1016/j.jhazmat.2014.09.041

Abstract (EN): The possible approaches for in situ aerobic cometabolism of aquifers and vadose zones contaminated by chlorinated solvents are critically evaluated. Bioaugmentation of resting-cells previously grown in a fermenter and in-well addition of oxygen and growth substrate appear to be the most promising approaches for aquifer bioremediation. Other solutions involving the sparging of air lead to satisfactory pollutant removals, but must be integrated by the extraction and subsequent treatment of vapors to avoid the dispersion of volatile chlorinated solvents in the atmosphere. Cometabolic bioventing is the only possible approach for the aerobic cometabolic bioremediation of the vadose zone. The examined studies indicate that in situ aerobic cometabolism leads to the biodegradation of a wide range of chlorinated solvents within remediation times that vary between 1 and 17 months. Numerous studies include a simulation of the experimental field data. The modeling of the process attained a high reliability, and represents a crucial tool for the elaboration of field data obtained in pilot tests and for the design of the full-scale systems. Further research is needed to attain higher concentrations of chlorinated solvent degrading microbes and more reliable cost estimates. Lastly, a procedure for the design of full-scale in situ aerobic cometabolic bioremediation processes is proposed.

Idioma: Inglês

Tipo (Avaliação Docente): Científica

Nº de páginas: 18