title: Kinetics of aerobic cometabolic biodegradation of chlorinated and brominated aliphatic hydrocarbons: A review.
abstract: This review analyses kinetic studies of aerobic cometabolism (AC) of halogenated aliphatic hydrocarbons (HAHs) from 2001-2015 in order to (i) compare the different kinetic models proposed, (ii) analyse the estimated model parameters with a focus on novel HAHs and the identification of general trends, and (iii) identify further research needs. The results of this analysis show that aerobic cometabolism can degrade a wide range of HAHs, including HAHs that were not previously tested such as chlorinated propanes, highly chlorinated ethanes and brominated methanes and ethanes. The degree of chlorine mineralization was very high for the chlorinated HAHs. Bromine mineralization was not determined for studies with brominated aliphatics. The examined research period led to the identification of novel growth substrates of potentially high interest. Decreasing performance of aerobic cometabolism were found with increasing chlorination, indicating the high potential of aerobic cometabolism in the presence of medium- and low-halogenated HAHs. Further research is needed for the AC of brominated aliphatic hydrocarbons, the potential for biofilm aerobic cometabolism processes, HAH-HAH mutual inhibition and the identification of the enzymes responsible for each aerobic cometabolism process. Lastly, some indications for a possible standardization of future kinetic studies of HAH aerobic cometabolism are provided.
authors.affiliation: Centre for Natural Resources and the Environment (CERENA), Department of Mining Engineering, University of Porto, Rua Dr. Roberto Frias, 4200-465 Porto, Portugal. Electronic address: pda12008@fe.up.pt.
authors.forename: João
authors.initials: J
authors.lastname: Jesus
authors.affiliation: Department of Civil, Chemical, Environmental and Materials Engineering, University of Bologna, Via Terracini 28, 40131 Bologna, Italy. Electronic address: dario.frascari@unibo.it.
authors.forename: Dario
authors.initials: D
authors.lastname: Frascari
authors.affiliation: LSRE-Laboratory of Separation and Reaction Engineering, Associate Laboratory LSRE-LCM, Chemical Engineering Department, Faculty of Engineering, University of Porto, Rua Dr. Roberto Frias, 4200-465 Porto, Portugal. Electronic address: tatiana.pozdniakova@fe.up.pt.
authors.forename: Tatiana
authors.initials: T
authors.lastname: Pozdniakova
authors.affiliation: Centre for Natural Resources and the Environment (CERENA), Department of Mining Engineering, University of Porto, Rua Dr. Roberto Frias, 4200-465 Porto, Portugal. Electronic address: asdanko@fe.up.pt.
authors.forename: Anthony S
authors.initials: AS
authors.lastname: Danko
mesh_terms: D000332:Aerobiosis; D001673:Biodegradation, Environmental; D006842:Hydrocarbons, Brominated / Q000378:metabolism*; D006843:Hydrocarbons, Chlorinated / Q000378:metabolism*; D007700:Kinetics; D008954:Models, Biological
chemical_list: D006842:Hydrocarbons, Brominated; D006843:Hydrocarbons, Chlorinated
keywords: Aerobic cometabolism; Biodegradation; Halogenated aliphatic hydrocarbons; Halogenated solvents; Kinetic study