Ferrous iron has been known to function as an electron source for iron-oxidizing microorganisms in both anoxic and oxic environments. A diversity of bacteria has been known to oxidize both soluble and solid-phase Fe(II) forms coupled to the reduction of nitrate. Here, we show for the first time Fe(II) oxidation by Sphaerotilus natans strain DSM 6575(T) under mixotrophic condition. Sphaerotilus ...

Dental plaque has been defined as “the nonmineralized microbial accumulation that adheres tenaciously to tooth surface, restorations, and prosthetic appliances, shows structural organization with predominance of filamentous forms, is composed of an organic matrix derived from salivary glycoproteins and extracellular microbial products, and cannot be removed by rinsing or water spray” (102). The...

Cellulose is the most plentiful renewable biopolymer in nature which could be utilized by cellulolytic enzymes. Cellulases are among the most important groups of industrial enzymes which are widely consumed in biofuel production, pulp and paper, textile, and detergent industries. These enzymes can support a cleaner environment through reducing chemical processes in mentioned industries and agro...

Yellowstone Lake (Yellowstone National Park, WY, USA) is a large high-altitude (2200 m), fresh-water lake, which straddles an extensive caldera and is the center of significant geothermal activity. The primary goal of this interdisciplinary study was to evaluate the microbial populations inhabiting thermal vent communities in Yellowstone Lake using 16S rRNA gene and random metagenome sequencing...

Wastewater generation is a worldwide problem, and its treatment an important practice for maintaining public health environmental protection. Oxygenic photogranules (OPGs) are relatively novel type of biogranules that have the potential to substitute conventional activated sludge (AS) process due production in situ oxygen, better physical properties such as settling velocity density, well carbo...

The microalgal-bacterial granular sludge (MBGS) process is expected to meet the future requirements of municipal wastewater treatment technology for decontamination, energy consumption, carbon emission and resource recovery. However, little research on performance MBGS in outdoor was reported. This study investigated system treating under natural alternate day night conditions late autumn. resu...

The Bay of Naples, Italy, is renowned for its archaeological heritage. However, this heritage threatened by the combination weathering and biological activity microorganisms. Fungi are among major agents microbial deterioration cultural since they can cause cracks lesions in monuments due to penetrating force their hyphae. Such biodeterioration may weaken stone structures threaten longevity the...

An up-flow anaerobic sludge blanket (UASB) reactor targeting sulfate reduction was operated under a constant TOC/S-SO42− ratio of 1.5 ± 0.3 g C/g S for 639 days using crude glycerol as carbon source. A filamentous and fluffy flocculant material, namely slime-like substances (SLS), gradually accumulated in the bioreactor after cease methanogenic activity. The accumulation SLS followed by decreas...