scholarly journals Studies on sedimentation of asphaltene deposits in distillation residues

2007 ◽  
Vol 1 (3) ◽  
pp. 165-173
Author(s):  
Aneta Lorek ◽  
◽  
Maciej Paczuski ◽  
Keyword(s):  
Analytical Techniques ◽  
Experimental Methods ◽  
Dispersion Stability ◽  
Surface Active ◽  
Distillation Residues ◽  
Modern Analytical ◽  
Active Substances

In this work, experimental methods used for the evaluation of stability of solids in liquids dispersions, are presented. For the characterization of dispersion components, modern analytical techniques, such as tensiometry, scanning and static turbidimetry, have been applied. The influence of selected surface active substances on the dispersion stability was demonstrated.

Molecular Characterization of Diesel Fuels Using Modern Analytical Techniques

2020 ◽  
pp. 61-76
Author(s):  
C. S. Hsu ◽  
G. J. Dechert ◽  
D. J. Abbott ◽  
M. W. Genowitz ◽  
R. Barbour
Keyword(s):  
Molecular Characterization ◽  
Analytical Techniques ◽  
Diesel Fuels ◽  
Modern Analytical

Optimization of a biosurfactant production from bacteria isolated from soil and characterization of the surfactant / Topraktan izole edilen bakterilerden biyosurfaktan üretiminin optimizasyonu ve surfaktanın karakterizasyonu

2016 ◽  
Vol 41 (5) ◽  
Author(s):  
Yağmur Toptaş ◽  
Meltem Çelikdemir ◽  
Cansel Tuncer ◽  
Yeliz Buruk Şahin ◽  
Pınar Aytar Çelik ◽  
...  
Keyword(s):  
Antibacterial Activity ◽  
Contaminated Soil ◽  
Biosurfactant Production ◽  
Production Medium ◽  
Accession Number ◽  
Surface Active ◽  
Statistical Screening ◽  
Active Substances ◽  
Significant Factors

AbstractObjective: Biosurfactants are surface-active substances produced by microorganisms. The growth of microorganism supports biosurfactant production on hydrocarbon polluted environments. In this study, the capacity of biosurfactant production of Georgenia daeguensis (accession number, KP798810) isolated from hydrocarbon- contaminated soil was studied.Methods: The components of biosurfactant production medium were investigated through Plackett-Burman methodology. By using Placket-Burman based on statistical screening, six of the eleven factors of production medium were found to be critically effective on the biosurfactant production.Results: The significant factors were KCl, ZnSOConclusion: This study reported that Georgenia daeguensis is able to produce effective biosurfactant exhibiting antibacterial activity against K. pneumoniae.

Rainwater Dissolved Organic Carbon: Characterization of Surface Active Substances by Electrochemical Method

2007 ◽  
Vol 19 (19-20) ◽  
pp. 2077-2084 ◽  
Author(s):  
Božena Ćosović ◽  
Palma Orlović Leko ◽  
Zlatica Kozarac
Keyword(s):  
Organic Carbon ◽  
Dissolved Organic Carbon ◽  
Electrochemical Method ◽  
Surface Active ◽  
Active Substances

scholarly journals PREPARATION AND CHARACTERIZATION OF EGG SHELL BHASMA BY USING MODERN ANALYTICAL TECHNIQUES

2021 ◽  
Vol 11 (6) ◽  
pp. 51-53
Author(s):  
Kundan Patil
Keyword(s):  
Raw Materials ◽  
Chemical Characterization ◽  
Analytical Techniques ◽  
Essential Elements ◽  
Lemon Juice ◽  
The Body ◽  
Chemical Compositions ◽  
Deficient Diet ◽  
Modern Analytical

Calcium is one of the essential elements for living beings. As a supplement, it is used to treat Calcium deficiencies due to a calcium deficient diet. In Rasaratnasamuchchaya Calcium bhasma (Eggshell bhasma) is included as a rich calcium supplement. There is a need for work on the determination of the percentage of Calcium in the eggshell and its limit of acceptance. Easy absorption of bhasma in the body is possible when its preparation is carried out in an acidic medium. Lemon juice is one of the acidic mediums employed for this purpose at pH 2.4. The eggshell powder is subjected to five calcination cycles to convert it into the Bhasma. Analysis of Eggshell Bhasma has been done by various modern analytical techniques to determine its exact chemical compositions. Various instrumental methods like XRD, FTIR, and SEM have been incorporated for analysis of raw materials, intermediates as well as final products. The calcium carbonate present in eggshells is in calcite form. In the present work, structural and chemical characterization of eggshell bhasma was carried out to develop an analytical profile of it.

Modern analytical techniques for bio-active substances

1972 ◽  
Vol 9 (1) ◽  
pp. 6
Author(s):  
F. L. Mitchell ◽  
A. R. Thomson ◽  
J. R. Mansfield ◽  
D. M. Heinekey ◽  
J. P. Leppard ◽  
...  
Keyword(s):  
Analytical Techniques ◽  
Modern Analytical ◽  
Active Substances
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