Topic
Bioreactor
About: Bioreactor is a research topic. Over the lifetime, 9980 publications have been published within this topic receiving 192690 citations. The topic is also known as: bioreactors.
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TL;DR: A novel design for a pilot scale anaerobic submerged membrane bioreactor equipped with an ultrafiltration unit, treating municipal wastewater at 18 ± 2°C, and inoculated with a mesophilic inoculum without acclimation, was implemented and evaluated over 3 years of stable operation.
63 citations
TL;DR: Two aerobic, lab-scale, slurry-phase bioreactors were used to examine the biodegradation of polycyclic aromatic hydrocarbons (PAHs) in contaminated soil and the associated bacterial communities and revealed significant shifts in the soil bacterial communities after introduction to the bioreactor.
Abstract: Two aerobic, lab-scale, slurry-phase bioreactors were used to examine the biodegradation of polycyclic aromatic hydrocarbons (PAHs) in contaminated soil and the associated bacterial communities. The two bioreactors were operated under semi-continuous (draw-and-fill) conditions at a residence time of 35 days, but one was fed weekly and the other monthly. Most of the quantified PAHs, including high-molecular-weight compounds, were removed to a greater extent in the weekly-fed bioreactor, which achieved total PAH removal of 76%. Molecular analyses, including pyrosequencing of 16S rRNA genes, revealed significant shifts in the soil bacterial communities after introduction to the bioreactors and differences in the abundance and types of bacteria in each of the bioreactors. The weekly-fed bioreactor displayed a more stable bacterial community with gradual changes over time, whereas the monthly-fed bioreactor community was less consistent and may have been more strongly influenced by the influx of untreated soil during feeding. Phylogenetic groups containing known PAH-degrading bacteria previously identified through stable-isotope probing of the untreated soil were differentially affected by bioreactor conditions. Sequences from members of the Acidovorax and Sphingomonas genera, as well as the uncultivated “Pyrene Group 2” were abundant in the bioreactors. However, the relative abundances of sequences from the Pseudomonas, Sphingobium, and Pseudoxanthomonas genera, as well as from a group of unclassified anthracene degraders, were much lower in the bioreactors compared to the untreated soil.
63 citations
TL;DR: Scenedesmus obliquus cells adsorbed in hydrophilic, commercially available polymeric foams are of potential value for biologic N depollution of drinking waters contaminated with nitrogenous fertilizers.
63 citations
TL;DR: In this paper, the role of hydrodynamic conditions on properties (physical, chemical and biochemical) of granular biomass grown under aerobic conditions in a SBBR (i.e. sequencing batch biofilter reactor) was evaluated.
63 citations
TL;DR: The usefulness of this new device was demonstrated by carrying out 25 parallel experiments to optimise the growth conditions of Bacillus subtilis ATCC6633, a strict aerobe, over a range of pH values and C/N ratios.
63 citations