Preparation and Characterization of Carbon Nanofiber from Liquid Phase Carbon Source

Carbon nanofiber is a new type of carbon materials and it has wide application prospects. At present, there are many kinds of synthesis methods of carbon nanofibers. Among them, preparation of carbon nanofibers from the controllable flame is a new method. It needs simple laboratory equipments and normal atmosphere pressure in this method. Experimental apparatus is including controllable flame burner, thermocouple, mass flow meter and catalyst preparation system, etc. The key factors of synthesis experiment involving the carbon source, the catalyst and high temperature heat source. Characterization of the carbon nanofibers from the controllable flame is by scanning electron microscope (SEM) and transmission electron microscope (TEM).The experimental results indicated that carbon nanofibers with less impurity can be captured at the temperature from 720 to 880 ̊C when carbon monoxide and iron-based catalyst served as carbon source and the catalyst respectively.

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Isolation and Characterization of a Styrene Trimer Degrading Microorganism

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.1073-1076.666 ◽

2014 ◽

Vol 1073-1076 ◽

pp. 666-671

Author(s):

Guang Chun Li ◽

Chun Xiang Piao ◽

Katsuhiko Saido ◽

Seon Yong Chung

Keyword(s):

Pseudomonas Aeruginosa ◽

Liquid Phase ◽

Carbon Source ◽

Sole Carbon Source ◽

Isolation And Characterization ◽

Degrading Bacteria ◽

Ochrobactrum Intermedium ◽

Complex Strain ◽

Degrading Microorganism

Biodegradation of the styrene trimer was investigated, and its degrading bacteria were screened and isolated. Complex bacteria ST (strain ST1 and ST2) was isolated from contaminated soil by polystyrene and named by strain ST1 and ST2. ST1 and ST2 were identified by 16S rDNA and classified byOchrobactrum intermediumsp. andPseudomonas aeruginosasp., respectively. Biodegradation experiments were performed in batch and styrene trimer was used as a sole carbon source. Isolated two bacteria were used as degrading microorganisms. Initial liquid phase concentration of the styrene trimer was 50 mg/L. 95% of the styrene trimer was degraded in 17 days by the complex strain ST. The concentration was analyzed by using GC. Metabolites of bacteria were analyzed and three kinds of products that were identified by GC/MS.

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Morphological Characterization of Mycobacteriophage R1

Proceedings, annual meeting, Electron Microscopy Society of America ◽

10.1017/s0424820100051281 ◽

1974 ◽

Vol 32 ◽

pp. 254-255

Author(s):

B. L. Soloff ◽

T. A. Rado

Keyword(s):

Carbon Source ◽

Stationary Phase ◽

Growth Phase ◽

Minimal Medium ◽

Morphological Characterization ◽

Logarithmic Growth Phase ◽

Complete Lysis ◽

Lysogenic Culture ◽

Logarithmic Growth

Mycobacteriophage R1 was originally isolated from a lysogenic culture of M. butyricum. The virus was propagated on a leucine-requiring derivative of M. smegmatis, 607 leu−, isolated by nitrosoguanidine mutagenesis of typestrain ATCC 607. Growth was accomplished in a minimal medium containing glycerol and glucose as carbon source and enriched by the addition of 80 μg/ ml L-leucine. Bacteria in early logarithmic growth phase were infected with virus at a multiplicity of 5, and incubated with aeration for 8 hours. The partially lysed suspension was diluted 1:10 in growth medium and incubated for a further 8 hours. This permitted stationary phase cells to re-enter logarithmic growth and resulted in complete lysis of the culture.

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