نتایج جستجو برای: slurry bubble column1

تعداد نتایج: 22475  

Journal: :Applied and environmental microbiology 2017
Kirstine Klitgaard Mikael L Strube Anastasia Isbrand Tim K Jensen Martin W Nielsen

At present, very little information exists regarding what role the environmental slurry may play as an infection reservoir and/or route of transmission for bovine digital dermatitis (DD), a disease which is a global problem in dairy herds. To investigate whether DD-related bacteria belong to the indigenous microbiota of the dairy herd environment, we used deep amplicon sequencing of the 16S rRN...

2015
Marco A. S. Garcia Daniel M. Silvestre Cassiana S. Nomura Liane M. Rossi

Quantification of metal loading in supported catalysts is imperative; however, the analytical methods are usually time-consuming, expensive, and require sophisticated equipment and sample extraction with hazardous and corrosive strong acids. Herein, we report a new method for quantification of metal in supported catalysts using slurry sampling flame atomic absorption spectrometry. The slurry sa...

2015
U. Kumar S. N. Singh

In the present study, pressure drop have been measured for narrow sized silica sand slurry and bimodal slurry consisting of narrow sized silica sand and fly ash as fine particles in different proportions keeping the overall efflux concentration same using a pilot plant test loop. The pressure drop has been measured over a length of 4.0 m in 50 mm NB diameter pipe line for fully developed flow. ...

Journal: :Chemical senses 1996
K C Persaud S M Khaffaf P I Hobbs R W Sneath

The major odoriferous components of fresh pig slurry were identified using gas chromatography coupled to mass spectrometry. From the analytical data, a standard artificial slurry was reconstituted. The performance of conducting polymer odour sensor arrays was evaluated using the individual chemical volatile components and the artificial slurry itself. Most of the components are discriminated fr...

2014
R. Singh

The purpose of the present investigation is to compare the statistically controlled machining solution of titanium alloys using ultrasonic machining (USM). In this study, the previously developed Taguchi model for USM of titanium and its alloys has been investigated and compared. Relationships between the material removal rate, tool wear rate, surface roughness and other controllable machining ...

2012
Vanesa Losada Óscar Rodríguez José M. Miranda Jorge Barros Santiago P. Aubourg

Slurry ice is a biphasic system that has recently shown a number of advantages when employed as a chilling medium for fish species. Its use for a crustacean species of high commercial value -namely Norway lobster (Nephrops norvegicus)was evaluated in parallel to traditional flake icing. Quality parameters related to microbial spoilage and biochemical breakdown (aerobe and psychrotroph counts, p...

2017
Melissa Tabada Montalbo-lomboy Samir Kumar Khanal Johannes van Leeuwen D. Raj Raman David A. Grewell

The effects of ultrasonication of corn slurry, on particle size distribution and enzymatic hydrolysis was studied for the dry-grind mill ethanol industry. Two independent ultrasonic experiments were conducted at a frequency of 20 kHz; in batch and continuous systems. The ground corn slurry (33% m/v) was pumped at flow rates 10-28 L/min in continuous flow experiments, and sonicated at constant a...

2016
Ok Hwa Hwang Sung Back Cho Deug Woo Han Sang Ryoung Lee Jeong Hoon Kwag Sung Kwon Park

Odor from buildings where pigs are housed is generated by anaerobic fermentation of undigested materials in pig slurry stored for several weeks in pit. The objective of this study was to investigate the effect of storage period on the level of odorous compounds in pig slurry and on its bacterial community. A slurry sample (15 L) was taken from the pit of a finisher pig building and incubated in...

Journal: :Journal of environmental quality 2001
S J Masten H Kim-Yang E D Walker H Roman M T Yokoyama

Swine manure slurries were ozonated at a dosage of 1 g/L and tested for their toxicity to the house fly (Musca domestica). The observed toxicity of ozonated swine manure was consistent and independent of origin of the swine manure. A dose (dilution) response curve was performed. A 50% dilution in the ozonated swine manure slurry resulted in 90% reduction in toxicity. Neither the synthetic nor o...

2012
Balwinder Singh Pradeep Kumar

Abstract — Ceramic shell investment casting process is used to produce high quality metal products with relatively close dimensional tolerances. The refractory primary slurry that is applied to the surface of the pattern assembly, to pick up its surface details plays a very important role in ceramic shell investment casting process (CSICP). It produces a smooth, acceptable surface finish of the...

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