Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Anaerobic Microbial Degradation of Polycyclic Aromatic Hydrocarbons: A Comprehensive Review
Abstract Polycyclic aromatic hydrocarbons (PAHs) are a class of hazardous organic contaminants that are widely distributed in nature, and many of them are potentially toxic to humans and other living organisms. Biodegradation is the major route of detoxification and removal of PAHs from the environment. Aerobic biodegradation of PAHs has been the subject of extensive research; however, reports on anaerobic biodegradation of PAHs are so far limited. Microbial degradation of PAHs under anaerobic conditions is difficult because of the slow growth rate of anaerobes and low energy yield in the metabolic processes. Despite the limitations, some anaerobic bacteria degrade PAHs under nitrate-reducing, sulfate-reducing, iron-reducing, and methanogenic conditions. Anaerobic biodegradation, though relatively slow, is a significant process of natural attenuation of PAHs from the impacted anoxic environments such as sediments, subsurface soils, and aquifers. This review is intended to provide comprehensive details on microbial degradation of PAHs under various reducing conditions, to describe the degradation mechanisms, and to identify the areas that should receive due attention in further investigations.
Anaerobic Microbial Degradation of Polycyclic Aromatic Hydrocarbons: A Comprehensive Review
Abstract Polycyclic aromatic hydrocarbons (PAHs) are a class of hazardous organic contaminants that are widely distributed in nature, and many of them are potentially toxic to humans and other living organisms. Biodegradation is the major route of detoxification and removal of PAHs from the environment. Aerobic biodegradation of PAHs has been the subject of extensive research; however, reports on anaerobic biodegradation of PAHs are so far limited. Microbial degradation of PAHs under anaerobic conditions is difficult because of the slow growth rate of anaerobes and low energy yield in the metabolic processes. Despite the limitations, some anaerobic bacteria degrade PAHs under nitrate-reducing, sulfate-reducing, iron-reducing, and methanogenic conditions. Anaerobic biodegradation, though relatively slow, is a significant process of natural attenuation of PAHs from the impacted anoxic environments such as sediments, subsurface soils, and aquifers. This review is intended to provide comprehensive details on microbial degradation of PAHs under various reducing conditions, to describe the degradation mechanisms, and to identify the areas that should receive due attention in further investigations.
Anaerobic Microbial Degradation of Polycyclic Aromatic Hydrocarbons: A Comprehensive Review
Dhar, Kartik (Autor:in) / Subashchandrabose, Suresh R. (Autor:in) / Venkateswarlu, Kadiyala (Autor:in) / Krishnan, Kannan (Autor:in) / Megharaj, Mallavarapu (Autor:in)
01.01.2019
84 pages
Aufsatz/Kapitel (Buch)
Elektronische Ressource
Englisch
2-Naphthoic acid , Aerobic biodegradation , Anaerobic biodegradation , Anoxia , Aromatic ring reduction , Benzo(a)pyrene , Biodegradation , Bioremediation , Fate of PAHs , Genetics , Iron-reducing bacteria , Mechanism of anaerobic biodegradation , Metabolite profiling , Methanogenic bacteria , Microbial degradation , Naphthalene , Naphthalene carboxylase , Nitrate-reducing bacteria , PAH sources , Pathways of biodegradation , Phenanthrene , Polycyclic aromatic hydrocarbons , Pyrene , Sulfate-reducing bacteria , Thermodynamics Environment , Ecotoxicology , Environmental Management , Water Quality/Water Pollution , Environmental Chemistry
The lack of microbial degradation of polycyclic aromatic hydrocarbons from coal-rich soils
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