Bench-scale evaluation of alternative biological treatment processes for the remediation of pentachlorophenol- and creosote-contaminated materials. Slurry-phase bioremediation

Biodegradation kinetics of naphthalene in nonaqueous phase liquid-water mixed batch systems: Comparison of model predictions and experimental results

“…Various recent investigations have reported on the biodegradation of 2-and 3-ring PAH compounds sorbed on soils (Bauer and Capone, 1988;Mihelcic and Luthy, 1991;Mueller et al, 1991;Park et al, 1990) or present as NAPL components (Efroymson and Alexander, 1994;OrtegaCalvo and Alexander, 1994;Ghoshal et al, 1996;Woodzinski and Larocca, 1977). Laboratory studies employing supersaturated aqueous solutions of PAH compounds have shown that the rates of dissolution control the rates of biodegradation of these compounds (Stucki and Alexander, 1987;Volkering et al, 1993;Woodzinski and Bertolini, 1972;Woodzinski and Coyle, 1974).…”

Evaluation of drum bioreactor performance used for decontamination of soil polluted with polycyclic aromatic hydrocarbons

“…In the actual operation of slurry bioreactors, 10±30% soil contents (ε a = 0.1±0.3) have been widely used. 4,5 It has also been reported that too high an amount of soil in the reactor inhibited the degradation of contaminants. 13 …”

“…2,3 Out of a range of bioremediation technologies, treatment in a slurry bioreactor is considered to be one of the fastest bioremediation methods since substrates can be ef®ciently transported to the microbial population. 4 However, soil treatment using a vertical slurry bioreactor is a relatively expensive method for bioremediation. Moreover, slurry bioreactors have been limited to the treatment of ®ne soils.…”

A Review on Polycyclic Aromatic Hydrocarbons: Their Transport, Fate and Biodegradation in the Environment

“…Poly aromatic hydrocarbons (PAHs) are one class of toxic environmental pollutants comprised of fused aromatic rings and have accumulated in the environment due to a variety of anthropogenic activities (Mueller et al, 1991). PAHs are group of chemicals with more than 10,000 compounds that consist of two or more fused benzene rings in different arrangements (Blumer, 1976;Mahyar Sakari, 2012).…”