scholarly journals Ionometric Determination of Tannins in Industrial Production

2016 ◽  
Vol 10 (1) ◽  
pp. 73-80
Author(s):  
Natalia Lutsenko ◽  
◽  
Maria Mironyak ◽  
Jurij Panchenko ◽  
Volodymyr Tkach ◽  
...  

1996 ◽  
Vol 73 (10) ◽  
pp. 1297-1304 ◽  
Author(s):  
Joakim Skovly ◽  
Elsa Lundanes ◽  
Tyge Greibrokk


1982 ◽  
Vol 39 (5) ◽  
pp. 259-260
Author(s):  
T. I. Danilevich ◽  
P. A. Andreev ◽  
V. V. Abramov


2011 ◽  
pp. 289-295 ◽  
Author(s):  
Walter Hein ◽  
Hans Bauer ◽  
Florian Emerstorfer

Based on laboratory trials on the optimal flocculating point, in which the variation of this command variable of the juice purification was demonstrated, a prototype for the automated determination was constructed. A measurement system, which is operated in the bypass of the industrial production, is used for an automatic stepwise carbonatation of main liming juice. Starting at pH = 11.2 carbonatation gas is injected to bring down the pH to 10.4 in 0.1 or 0.2 pH units per step. After every pH step, the sedimentation behavior of the juice is characterized by means of a turbidity measurement after a clarification time of 3.5 min. With the function of turbidity versus pH value the optimal end point of the1st carbonatation can be determined. All in all an analysis takes approximately 60 min. Afterwards, an automated cleaning step takes place. For the prototype, the control of every step as well as the interpretation of the results is carried out with a personal computer. Based on the good experiences a so-called industrial version of this measurement system was constructed.



2008 ◽  
Vol 42 (3) ◽  
pp. 150-152 ◽  
Author(s):  
O. I. Kulapina ◽  
V. V. Baraguzina ◽  
N. V. Skoblikova


2019 ◽  
Vol 9 (1) ◽  
pp. 41-56
Author(s):  
Yudhistira Ardana

Non Performing Financing is the most important issue for banks to survive. This study aims to analyze the determination of internal and external factors on Non Performing FInancing on Sharia Banking in Indonesia. This study uses Error Correction Model analysis techniques. The results show that in the short term the variables that have a significant effect on Non Performing Financing on Sharia Banking in Indonesia are inflation variables, while the Exchange Rate, Bank Indonesia Certificate of Wadi’ah, Industrial Production Index, Financing Deposite Ratio, and Capital Adequacy Ratio variables have no significant effect. In the long run the variables that are influential are Exchange Rate, Bank Indonesia Certificate of Wadi’ah, Financing Deposite Ratio, and Capital Adequacy Ratio, while Inflation and Industrial Production Index have no significant effect.



2019 ◽  
Vol 62 (5) ◽  
pp. 381-386
Author(s):  
I. V. Murav’eva ◽  
G. I. Bebeshko

Metallurgical fuel, including various types of mineral fuels: coke, hard coal, brown coal, peat, combustible shales and products of their technological conversion – needs environmental control of their use safety. When burning metallurgical fuel, harmful substances fall into the environment such as chlorine, fluorine, sulfur, arsenic, which worsen the environmental situation. Technical regulations on the safety of coal products contain requirements to limit the content of harmful impurities and their maximum permissible concentrations. Due to the wide spread of fluorine in natural and technological objects and the high toxicity of its compounds, the control of fluorine content is an urgent problem in the industrial use of metallurgical fuel. Physical methods for the determination of fluorine in solid fuel based on excitation of different spectra of the studies allow to identify it without decomposition directly in the source solid material, however, they have several limitations (sensitivity, accuracy of definition, complexity of hardware design). In other methods, mainly in ionchromatography and ionometry, samples are decomposed and fluorine is transferred into the solution. High temperature processes: pyrohydrolysis and combustion melting are usually used for decomposition. The aim of this work was to create a selective method for ionometric determination of fluorine with a fluoride-selective electrode. The study objects were samples of coal: brown, gas, semicoke, coke nut. Effective decomposition of the samples by two-stage high-temperature melting with KNaCO3 is proposed. Hydrolysis coprecipitation of accompanying interfering cations with chloride iron (II) was carried out for fluorine discharge in the solution in the form of free fluoride. The procedure of decomposition and ionometric determination of fluorine is described. The estimation of trueness and reproducibility of the developed technique by the method of sample variation was carried out. Fluorine content in the studied samples did not exceed the limit- tolerance values for commercial samples of coal products, which indicates the environmental safety of the samples in their subsequent energy application. The developed method is promising for the control of fluorine impurity in metallurgical fuel and is characterized by selectivity and simple carrying out.



1984 ◽  
Vol 20 (9) ◽  
pp. 460-462
Author(s):  
B. N. Klopov ◽  
A. G. Cherpak ◽  
R. D. Muratova ◽  
L. N. Kuznetsova


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