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Content Provider | World Health Organization (WHO)-Global Index Medicus |
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Author | Krebs, Maria Wirth, Benjamin Andert, Janet |
Description | Country affiliation: Germany Author Affiliation: Wirth B ( Leibniz Institute for Agricultural Engineering Potsdam-Bornim, Max-Eyth-Allee 100, 14469, Potsdam, Germany. bwirth@atb-potsdam.de.); Krebs M ( Technische Universität Berlin, Straße des 17. Juni 135, 10623, Berlin, Germany. bwirth@atb-potsdam.de.); Andert J ( Leibniz Institute for Agricultural Engineering Potsdam-Bornim, Max-Eyth-Allee 100, 14469, Potsdam, Germany.) |
Abstract | Phenol is a wastewater contaminant depicting an environmental hazard. It can be found in effluents from various industrial processes and becomes even more common as a waste by-product of biomass-based bioenergy concepts. Because of its toxicity to anaerobic microorganisms, it can be recalcitrant during biogas production and anaerobic wastewater treatment. This study tested increased phenol loads (100 to 5000 mg L(-1)) as the sole carbon source in a semi-continuous mesophilic anaerobic adaption experiment using an unadapted microbial community from a standard biogas plant. Phenol was completely degraded at starting concentrations of up to 2000 mg L(-1). At 5000 mg L(-1), complete inhibition of the anaerobic community was observed. Lag times were reduced down to less than a day treating 2000 mg L(-1) after 16 weeks of adaption to gradually increased phenol concentrations. Specific degradation rates increased consecutively up to 7.02 mg gVS (-1) day(-1) at 2000 mg L(-1). This concentration was completely degraded within less than 12 days. The microbial community composition was assessed using 16S rRNA gene-based terminal restriction fragment length polymorphism (T-RFLP) analysis. In the bacterial community, no clear shift was visible. Clostridia were with the highest relative abundance of 27 %, the most prominent bacterial class. T-RFs representing Clostridia, Anaerolinaceae, Flavobacteria, and Bacteroidea appeared at similar relative abundance level throughout the experiment. The archaeal community, however, changed from a Methanosarcinales-dominated community (57%) to a community with a nearly even distribution of Methanobacteriales (21%) and Methanosarcinales (34%) with increasing starting phenol concentration. |
ISSN | 09441344 |
Issue Number | 23 |
Volume Number | 22 |
e-ISSN | 16147499 |
Journal | Environmental Science and Pollution Research |
Language | English |
Publisher | Springer |
Publisher Date | 2015-12-01 |
Publisher Place | Germany |
Access Restriction | Subscribed |
Subject Keyword | Adaptation, Biological Archaea Metabolism Bacteria Microbial Consortia Phenol Anaerobiosis Genetics Biofuels Biomass Bioreactors Microbiology Cellulose Rna, Ribosomal, 16s Waste Products Waste Water Journal Article Research Support, Non-u.s. Gov't Discipline Environmental Science Discipline Environmental Chemistry |
Content Type | Text |
Resource Type | Article |
Subject Domain (in MeSH) | Archaea Bacteria Organic Chemicals Macromolecular Substances Nucleic Acids, Nucleotides, and Nucleosides Complex Mixtures Equipment and Supplies Chemical Phenomena Microbiological Phenomena Biological Phenomena |
Subject | Pollution Environmental Chemistry Health, Toxicology and Mutagenesis Medicine |
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