Showing 1-30 of 3837 results for "anaerobic"
E A F Vasconcelos et al.
Anaerobe, 59, 145-153 (2019-06-30)
Glycerol, the main residue of biodiesel production, can be used to produce organic acids and energy through anaerobic digestion. This study aimed to assess microbial structure, diversity, productivity, and stability and the influence of these parameters on the performance of...
Mohammad Danish Khan et al.
Bioresource technology, 238, 492-501 (2017-05-06)
This study aims to examine the effect of different co-substrates on the anaerobic degradation of pentachlorophenol (PCP) with simultaneous production of biogas. Acetate and glucose were added as co-substrates to monitor and compare the methanogenic reaction during PCP degradation. During...
Weixin Zhao et al.
Bioresource technology, 311, 123501-123501 (2020-05-18)
The accumulation of volatile fatty acids (VFAs) can decrease reactor pH and inhibit methane-producing process. For the first time, photosynthetic bacteria (PSB) were used to recover from VFAs inhibition (pH 6.0) of an anaerobic digestion system. After adding PSB for...
Xiaofen Li et al.
Biotechnology and applied biochemistry, 62(4), 476-482 (2014-10-03)
Many potentially useful intermediates such as hydrogen and volatile fatty acids (VFAs) are formed during the complex anaerobic digestion processes that produce methane from biomass. This study recovers VFAs from an anaerobic digester by a combination of gas stripping and...
Karin Stultiens et al.
Applied microbiology and biotechnology, 103(16), 6783-6795 (2019-06-23)
The reject water of anaerobic digestors still contains high levels of methane and ammonium that need to be treated before these effluents can be discharged to surface waters. Simultaneous anaerobic methane and ammonium oxidation performed by nitrate/nitrite-dependent anaerobic methane-oxidizing(N-damo) microorganisms...
Ryan M Ziels et al.
Water research, 117, 218-229 (2017-04-14)
This study investigated the impacts of long-chain fatty acid (LCFA) feeding frequencies on microbial community structure, bioconversion kinetics, and process stability during anaerobic codigestion. Parallel laboratory-scale anaerobic codigesters fed with dairy cattle manure were either pulse-fed every two days or...
Shan Liu et al.
Bioresource technology, 192, 682-688 (2015-06-22)
The effect of urea addition on giant reed ensilage and sequential anaerobic digestion (AD) of the ensiled giant reed was evaluated. The dry matter loss during ensilage (up to 90 days) with or without urea addition was about 1%. Addition...
Muhammad A Latif et al.
Water research, 81, 288-293 (2015-06-18)
This paper assesses anaerobic digestion of waste activated sludge (WAS) at low pH to enhance phosphorous solubility. Batch biochemical methane potential tests were conducted at a pH range of 5 to 7.2 in two separate sets (two different WAS samples...
Weimin Sun et al.
Applied microbiology and biotechnology, 99(23), 10271-10282 (2015-08-08)
The shift of microbial communities during a transition from mesophilic anaerobic digestion (MAD) to thermophilic anaerobic digestion (TAD) was characterized in two treatments. One treatment was inoculated with sludge and the other was inoculated with manure. In this study, methane...
K L Tyrrell et al.
Anaerobe, 54, 39-41 (2018-08-11)
The in vitro activity of DS-2969b, a novel GyrB inhibitor, and six comparator agents was studied against 101 recent North American Clostridioides difficile isolates, 46 other intestinal anaerobes and 51 strains of methicillin-resistant Staphylococcus aureus. The MIC ranges (MIC90s) of DS-2969b...
Jung Hyun Byun et al.
Annals of laboratory medicine, 39(2), 190-199 (2018-11-16)
Anaerobic bacterial resistance trends may vary across regions or institutions. Regional susceptibility patterns are pivotal in the empirical treatment of anaerobic infections. We determined the antimicrobial resistance patterns of clinically important anaerobic bacteria, including recently named or renamed anaerobes. A...
Audrie A Medina-Colorado et al.
Anaerobe, 45, 10-18 (2017-05-01)
The human vagina constitutes a complex ecosystem created through relationships established between host mucosa and bacterial communities. In this ecosystem, classically defined bacterial aerobes and anaerobes thrive as communities in the microaerophilic environment. Levels of CO
Paul E Moote et al.
Canadian journal of microbiology, 66(4), 288-302 (2020-01-28)
Characterization of the microbiota of chickens is of current interest. The goals of the current study were to apply anaerobic isolation methods to comprehensively isolate and identify bacteria from the gastrointestinal tract of chickens and their environment. Bacterial communities within...
Jurgen Felsberg et al.
Anaerobe, 33, 85-89 (2015-03-01)
PCR-primers were designed for identification of strictly anaerobic bacteria of the genus Zymophilus based on genus-specific sequences of the 16S-23S rDNA internal transcribed spacer region. The specificity of the primers was tested against 37 brewery-related non-target microorganisms that could potentially...
Phalazane J Mtimunye et al.
Chemosphere, 113, 22-29 (2014-07-30)
Cultures of U(VI) reducing bacteria sourced from abandoned uranium mine tailing dam were evaluated for their ability to reduce U(VI) to U(IV). The species in the cultures reduced U(VI) in solutions with initial U(VI) concentration up to 400mgL(-)(1) under a...
Taewoo Yi et al.
Journal of environmental science and health. Part A, Toxic/hazardous substances & environmental engineering, 50(11), 1160-1168 (2015-07-21)
Extended-spectrum β-lactamases (ESBLs) have the capability of hydrolyzing a variety of the newer β-lactam antibiotics, including the third-generation cephalosporins and monobactams known as a rapidly evolving group of ESBLs. The purpose of this study was to investigate the occurrence and...
Nina Handal et al.
APMIS : acta pathologica, microbiologica, et immunologica Scandinavica, 123(9), 749-758 (2015-07-01)
We investigated 197 anaerobic isolates recovered from blood cultures in the period 2009-2013. The isolates included were Bacteroides spp., Clostridium spp., Prevotella spp., Fusobacterium spp. and Gram-positive anaerobic cocci (GPAC). Identification results by MALDI-TOF MS were compared to those obtained...
Petra J Reeve et al.
Journal of environmental management, 171, 121-127 (2016-02-11)
The anaerobic ammonium oxidation (anammox) process is widely acknowledged to be susceptible to a wide range of environmental factors given the slow growth rate of the anammox bacteria. Surprisingly there is limited experimental data regarding the susceptibility of the anammox...
David Giard et al.
Environmental technology, 34(5-8), 1007-1015 (2013-07-11)
In-storage psychrophilic anaerobic digestion (ISPAD) is a technology allowing livestock producers to operate an anaerobic digester with minimum technological know-how and for the cost of a conventional storage cover. Nevertheless, the system is exposed to ambient temperatures and biogas production...
G L Lombard et al.
Journal of clinical microbiology, 18(3), 609-613 (1983-09-01)
Three reagents for detecting indole, Kovac, Ehrlich, and p-dimethylaminocinnamaldehyde (DMCA), were evaluated with commercial microtest systems for characterizing and identifying anaerobic bacteria. The DMCA reagent, the most sensitive of the three reagents, gave a positive reaction with 445 of 449...
Damiano Magrì et al.
European journal of preventive cardiology, 22(8), 1046-1055 (2014-09-28)
Oxygen uptake at the anaerobic threshold (VO2AT), a submaximal exercise-derived variable, independent of patients' motivation, is a marker of outcome in heart failure (HF). However, previous evidence of VO2AT values paradoxically higher in HF patients with permanent atrial fibrillation (AF)...
D Puyol et al.
Water research, 116, 241-253 (2017-03-30)
Purple phototrophic bacteria (PPB) have been recently proposed as a key potential mechanism for accumulative biotechnologies for wastewater treatment with total nutrient recovery, low greenhouse gas emissions, and a neutral to positive energy balance. Purple phototrophic bacteria have a complex...
Mohammed Almuhayawi et al.
PloS one, 10(11), e0142398-e0142398 (2015-11-12)
Detection and identification of anaerobic bacteria in blood cultures (BC) is a well-recognized challenge in clinical microbiology. We studied 100 clinical anaerobic BC isolates to evaluate the performance of BacT/ALERT-FN, -FN Plus (BioMérieux), BACTEC-Plus and -Lytic (Becton Dickinson BioSciences) BC...
Bart C Bongers et al.
Pediatric exercise science, 27(2), 268-276 (2014-11-12)
To determine criterion validity of the pediatric running-based anaerobic sprint test (RAST) as a nonsophisticated field test for evaluating anaerobic performance in healthy children and adolescents. Data from 65 healthy children (28 boys and 37 girls between 6 and 18...
H R Beller et al.
Applied and environmental microbiology, 58(9), 3192-3195 (1992-09-01)
Two dead-end metabolites of anaerobic toluene transformation, benzylsuccinic acid and benzylfumaric acid, accumulated in sulfate-reducing enrichment cultures that were fed toluene as the sole carbon source. Stable isotope-labeled toluene and gas chromatography-mass spectrometry were used to confirm that the compounds...
B Z Fathepure et al.
Applied and environmental microbiology, 54(2), 327-330 (1988-02-01)
Hexachlorobenzene was dechlorinated to tri- and dichlorobenzenes in anaerobic sewage sludge. The complete biotransformation of 190 microM hexachlorobenzene (approximately 50 ppm) occurred within 3 weeks. The calculated rate of hexachlorobenzene dechlorination was 13.6 mumol liter-1 day-1. Hexachlorobenzene was dechlorinated via...
S Sawayama et al.
Water science and technology : a journal of the International Association on Water Pollution Research, 45(10), 151-156 (2002-08-22)
The possibility of 3-chlorobenzoate removal from water using an upflow anaerobic sludge blanket (UASB) reactor without the addition of any extra dechlorinating culture under light conditions has been studied on a laboratory scale. Benzoate removal was observed in the first...
Qinghong Wang et al.
Environmental technology, 34(5-8), 687-693 (2013-07-11)
In this study, a Ca-modified porphyritic andesite (wheat-rice-stone (WRS)) was developed for the anaerobic digestion of ammonium-rich wastes. The Ca-modified WRS was obtained with integrated Ca-salt treatment and calcination. Scanning electron microscope and Brunauer-Emmett-Teller surface area analyses were performed to...
Matej Medvecky et al.
BMC genomics, 19(1), 561-561 (2018-08-02)
In order to start to understand the function of individual members of gut microbiota, we cultured, sequenced and analysed bacterial anaerobes from chicken caecum. Altogether 204 isolates from chicken caecum were obtained in pure cultures using Wilkins-Chalgren anaerobe agar and...
Yang Hongwei et al.
Ecotoxicology and environmental safety, 53(3), 416-421 (2002-12-18)
This study assessed anaerobic biodegradability of organic compounds from microorganism activity. Dehydrogenase activity can be a good parameter characterizing the microorganism activity. A modified method of 2-(p-iodophenyl-3-(p-nitrophenyl)-5-pheny tetrazolium chloride-dehydrogenase activity determination was proposed in anaerobic biodegradability assessment. Cubic spline curves...

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