Infrared Examination of the Transformation of Barium Sulfate into Barium Carbonate. An Inorganic Infrared Qualitative and Quantitative Experiment

2006 ◽  
Vol 83 (6) ◽  
pp. 910 ◽  
Author(s):  
Gene E. Kalbus ◽  
Van T. Lieu ◽  
Lee H. Kalbus
Keyword(s):  
Barium Sulfate ◽  
Barium Carbonate ◽  
Qualitative And Quantitative

scholarly journals Study results of the choice of barium salts reagents for wastewater treatment from sulfates

2021 ◽  
Vol 2131 (3) ◽  
pp. 032065
Author(s):  
O Girikov ◽  
E Matyushenko ◽  
E Voitov
Keyword(s):  
Wastewater Treatment ◽  
Barium Sulfate ◽  
Barium Carbonate ◽  
Barium Chloride ◽  
Barium Hydroxide ◽  
Sulfate Content ◽  
Purification Method ◽  
Study Results ◽  
Mine Wastewater ◽  
Treatment Facilities

Abstract The research on the removal of sulfates from mine wastewater is presented in the article. A new purification method has been proposed that allows removing a significant part of sulfates by precipitation in the form of barium sulfate. The present studies were devoted to the removal of sulfates from mine wastewater with a sulfate content of 1050 mg/l by introducing various doses of barium-containing reagents, namely barium chloride, hydroxide and barium carbonate. Among the listed reagents, the best results were obtained, using barium chloride and hydroxide. The use of barium chloride with a dose of 2700 mg/l and barium hydroxide with a dose of 3200 mg/l made it possible to reduce the concentration of sulfates below the maximum permissible (100 mg/l) when discharged into a reservoir for fishery purposes. A reliable in operation technological scheme for removing sulfates from highly concentrated mine wastewater has been developed, which makes it possible to reduce sulfates in the treated waste liquid discharged into the reservoir to 100 mg/l and below. In this case, the purification is carried out with separation of streams - in a smaller part (about 26% of the incoming); barium chloride is introduced, in the second - barium hydroxide. After that, the streams are mixed again, settled, sent to the calciner and to the post-treatment facilities and discharged into the reservoir. The resulting sludge is stored in special landfills or is processed to extract valuable components.

Coprecipitation of barium sulfate and barium carbonate at 80°C

1987 ◽  
Vol 45 ◽  
pp. 352-353
Author(s):  
K. Takiyama
Keyword(s):  
Electron Microscopy ◽  
Aqueous Solution ◽  
Barium Sulfate ◽  
Room Temperature ◽  
Barium Carbonate ◽  
Morphological Properties ◽  
X Ray Diffraction ◽  
Orthorhombic System ◽  
X Ray ◽  
Lattice Constants

The coprecipitation of two sparingly soluble compounds in the aqueous solution has been studied by means of electron microscopy and x-ray diffraction techniques, and the properties of the particles produced by the coprecipitation were discussed as an issue in crystal chemistry. In the present investigation the coprecipitation of barium sulfate and barium carbonate was studied. Both crystals belong to the orthorhombic system. The lattice constants of barium sulfate are ao=8.878, bo=5.450 and co=7.152 Å. Those of barium carbonate are ao=5.314, bo=8.902 and co=6.430 Å. The ratio of the lattice constants of barium sulfate is different from that of barium carbonate. In this investigation, the relation of the morphological properties of the particles with the crystallographic properties of the component compounds was discussed. As the particles became very small when the precipitation was carried out at room temperature, in the present investigation the coprecipitation was done at 80°C to produce larger particles to study the morphological properties of the particles.

Some Properties of Platelet Cofactor I Concentrates of Bovine Origin

1960 ◽  
Vol 04 (03) ◽  
pp. 342-348 ◽  
Author(s):  
William J. Baker ◽  
Walter H. Seegers
Keyword(s):  
Hydrogen Peroxide ◽  
Ascorbic Acid ◽  
Magnesium Hydroxide ◽  
Barium Sulfate ◽  
Freeze Drying ◽  
Sodium Sulfite ◽  
Barium Carbonate ◽  
High Quality ◽  
Bovine Plasma ◽  
Native Plasma

SummaryPlatelet cofactor I preparations from bovine plasma were studied from the viewpoint of stability in the presence of chemicals selected strategically. The preparations were of high quality having about 86 per cent of the protein as one component by ultracentrifuge analysis. The activity was easily destroyed with hydrogen peroxide, sodium sulfite, phenylhydrazine, formalin, acetone, and by the process of freeze drying. The activity was not lost in the presence of oxygen, ascorbic acid, cysteine, merthiolate, parachloromercuribenzoate or 0.5 per cent phenol. In the native plasma the activity is not adsorbed on barium carbonate, barium sulfate, or magnesium hydroxide. Nor is it destroyed by ether; but, in purified form it is adsorbed on these adsorbants and is destroyed by ether. In the purified preparations the activity was not adsorbed on IRC-50 resin thus making it possible to use this adsorbant to remove any thrombin that might be added to a platelet cofactor I preparation. By this technic it was possible to show that thrombin alone does not easily destroy platelet cofactor I activity.

scholarly journals Purification of Industrial Copper Electrolyte from Bismuth Impurity

Minerals ◽  
2021 ◽  
Vol 12 (1) ◽  
pp. 36
Author(s):  
Patrycja Kowalik ◽  
Dorota Kopyto ◽  
Mateusz Ciszewski ◽  
Michał Drzazga ◽  
Katarzyna Leszczyńska-Sejda
Keyword(s):  
Barium Sulfate ◽  
Barium Carbonate ◽  
Lead Sulfate ◽  
Strontium Carbonate ◽  
Barium Hydroxide ◽  
Process Time ◽  
Purification Process ◽  
Copper Electrolyte ◽  
Bismuth Concentration ◽  
Main Components

This work focused on purifying copper electrolytes from a bismuth impurity on a laboratory scale. The electrolyte came from Polish copper electrorefineries with the content of main components, g/dm3: 49.6 Cu, 160 H2SO4. The electrolyte was enriched in bismuth by Bi2O3 addition. Purification of bismuth contamination was carried out using selected agents with adsorbing effects, such as barium hydroxide octahydrate, strontium carbonate, barium carbonate, barium and lead sulfates. The trials were performed until achieving the Bi level—below 0.1 g/dm3. During the experiments, it was noticed that electrolyte purification degree depends on initial Bi concentration in electrolyte, time and temperature, as well as on the type and amount of the bismuth-lowering agent. The most satisfactory results of Bi impurity removal were with additions of barium hydroxide octahydrate, strontium carbonate and barium carbonate to electrolyte at 60 °C for 1 h. These parameters revealed the highest electrolyte purification degree. Bismuth is not removed effectively from electrolytes by barium sulfate or lead sulfate addition. The efficiency of the purification process is much higher when the agents are added to the solution in the form of carbonates or hydroxides. Extending the electrolyte purification process time may cause dissolution of bismuth from the resulting precipitate and increase of bismuth concentration in electrolytes.

Removal of Thrombokinase from Commercial Thrombin

1967 ◽  
Vol 17 (01/02) ◽  
pp. 247-255 ◽  
Author(s):  
D. M Kerwin ◽  
J. H Milstone
Keyword(s):  
Barium Sulfate ◽  
Barium Carbonate ◽  
Deae Cellulose ◽  
Complete Removal ◽  
Commercial Preparation ◽  
Deae Cellulose Column ◽  
Significant Contamination ◽  
Cellulose Column

SummaryCommercial thrombin was shown to contain appreciable amounts of thrombokinase. Passage through a DEAE-cellulose column substantially reduced the thrombokinase titer, although significant contamination could still be detected. Similarly, repeated barium sulfate adsorptions failed to remove the thrombokinase completely.However, barium sulfate adsorptions followed by passage through a column of DEAE-cellulose resulted in an essentially complete removal of the contaminant. Thrombin, so obtained, did not accelerate activation of prothrombin in the presence of calcium, phosphatide and barium carbonate adsorbed serum.Thrombokinase, separated by chromatography, was able to activate prothrombin very slowly in the presence of oxalate. Comparably dilute thrombin fractions and the unfractionated commercial preparation either did not possess this capability, or else this capability was obscured by a concomitant loss of thrombin.

Expression of laminin and beta-1 integrin in embryonic, neonatal, and adult rat heart

1991 ◽  
Vol 49 ◽  
pp. 182-183
Author(s):  
R.L. Price ◽  
T.K. Borg ◽  
L. Terracio ◽  
M. Nakagawa
Keyword(s):  
Temporal Expression ◽  
Qualitative And Quantitative ◽  
Adult Rat ◽  
Cytoplasmic Face ◽  
Extracellular Matrix Components ◽  
Basement Membrane Component ◽  
Beta 1 Integrin ◽  
Quantitative Changes ◽  
Cytoskeletal Elements ◽  
External Face

Little is known about the temporal expression of extracellular matrix components (ECM) and its receptors during development of the heart. Recent reports have shown that ECM components undergo both qualitative and quantitative changes during development, and it is believed that ECM components are important in the regulation of cell migration and cell:cell and cell:ECM recognition and adhesion.Integrins are transmembrane glycoproteins which bind several ECM components on their external face and cytoskeletal elements on the cytoplasmic face. Laminin is a basement membrane component which has been recognized as an important site for cell adhesion. Both the integrins and laminin are expressed early in development and continue to be expressed in the adult heart. With their documented roles in cell recognition, and cell:cell and cell:ECM migration and adhesion these proteins appear to be important components in development of the heart, and their temporal expression may play a pivotal role in morphogenesis and myofibrillogenesis of the heart.

In situ microprobe quantitation of inorganic particle burden in paraffin sections of lung tissue

1988 ◽  
Vol 46 ◽  
pp. 990-991
Author(s):  
Jerrold L. Abraham
Keyword(s):  
Lung Tissue ◽  
Quantitative Information ◽  
Particulate Material ◽  
Paraffin Sections ◽  
Tissue Samples ◽  
Qualitative And Quantitative ◽  
The Past ◽  
Quantitative Analyses ◽  
Data Result

Inorganic particulate material of diverse types is present in the ambient and occupational environment, and exposure to such materials is a well recognized cause of some lung disease. To investigate the interaction of inhaled inorganic particulates with the lung it is necessary to obtain quantitative information on the particulate burden of lung tissue in a wide variety of situations. The vast majority of diagnostic and experimental tissue samples (biopsies and autopsies) are fixed with formaldehyde solutions, dehydrated with organic solvents and embedded in paraffin wax. Over the past 16 years, I have attempted to obtain maximal analytical use of such tissue with minimal preparative steps. Unique diagnostic and research data result from both qualitative and quantitative analyses of sections. Most of the data has been related to inhaled inorganic particulates in lungs, but the basic methods are applicable to any tissues. The preparations are primarily designed for SEM use, but they are stable for storage and transport to other laboratories and several other instruments (e.g., for SIMS techniques).

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