scholarly journals Study on influencing factors of sulfur particle size in chelated iron in oxidation process

2021 ◽  
Vol 1976 (1) ◽  
pp. 012061
Author(s):  
Wu Zhang ◽  
Qishong Liu ◽  
Ke Liu ◽  
Rui Fan ◽  
Bo Liu ◽  
...  
Keyword(s):  
Particle Size ◽  
Influencing Factors ◽  
Oxidation Process ◽  
Chelated Iron

XRD and Microscopic Images for Synthesis Graphite Nanoparticles by Oxidation Method

2021 ◽  
Vol 19 (2) ◽  
pp. 45-49
Author(s):  
Firas H. Abdulrazzak ◽  
Rawnaq B. Jimaa ◽  
Israa M. Radhi ◽  
Takialdin A. Himdan
Keyword(s):  
Particle Size ◽  
Oxidation Process ◽  
Van Der Waals ◽  
Van Der Waals Forces ◽  
Oxidation Method ◽  
Microscopic Images ◽  
Graphite Nanoparticles ◽  
Clear Change

Graphite nanoparticles were successfully synthesized using mixture of H2O2/NH4OH with three steps of oxidation. The process of oxidations were analysis by XRD and optics microscopic images which shows clear change in particle size of graphite after every steps of oxidation. The method depend on treatments the graphite with H2O2 in two steps than complete the last steps by reacting with H2O2/NH4OH with equal quantities. The process did not reduces the several sheets for graphite but dispersion the aggregates of multi-sheets carbon when removed the Van Der Waals forces through the oxidation process.

Combustion Synthesis of Nanostructured ZrC: Formation Process and Influencing Factors

2021 ◽  
Vol 21 (4) ◽  
pp. 2196-2202
Author(s):  
Xian-Rui Zhao ◽  
Dun-Wen Zuo ◽  
Yong Chen ◽  
Qin-Tao Li ◽  
Gui-Xiang Liu ◽  
...  
Keyword(s):  
Particle Size ◽  
Combustion Synthesis ◽  
Influencing Factors ◽  
Combustion Wave ◽  
Formation Process ◽  
Combustion Temperature ◽  
Ceramic Particle ◽  
Displacement Reaction ◽  
Synthesis Mechanism ◽  
By Products

ZrC was produced by the combustion synthesis technology using Cu, Zr, and graphite as the starting element powders. The synthesis mechanism of ZrC was investigated by the combustion wave quenching experiment. Furthermore, the effects of sizes of C and Cu on the combustion synthesis behavior and products were also explored. Results revealed that ZrC was fabricated through the displacement reaction between C and Cu–Zr liquid. The Cu size hardly affected the combustion temperature and resultant products, indicating that the preparation cost of ZrC could be decreased by employing coarse Cu powders. With increasing C size, the burning temperature and ceramic particle size reduced. Graphite with size of 2.6 μm was used as the C source, and only ZrC nanoparticles and Cu were obtained. The products could be employed to prepare nano-sized ZrC/Cu composites without the elimination of by-products.

Transformation of polysulfidic sulfur to elemental sulfur in a chelated iron, hydrogen sulfide oxidation process

1994 ◽  
Vol 299 (1) ◽  
pp. 97-111 ◽  
Author(s):  
Eric T. Clarke ◽  
Touradj Solouki ◽  
David H. Russell ◽  
Arthur E. Martell ◽  
Derek McManus
Keyword(s):  
Hydrogen Sulfide ◽  
Elemental Sulfur ◽  
Oxidation Process ◽  
Sulfide Oxidation ◽  
Hydrogen Sulfide Oxidation ◽  
Chelated Iron

Fractal Dimension of Floc Growth in Micro-Coagulation Stage II: Some Normal Influencing Factors

2011 ◽  
Vol 243-249 ◽  
pp. 4827-4830
Author(s):  
Hao Yu Li ◽  
Jun Nan ◽  
Wei Peng He
Keyword(s):  
Particle Size ◽  
Fractal Dimension ◽  
Particle Size Distribution ◽  
Size Distribution ◽  
Influencing Factors ◽  
Aluminum Chloride ◽  
Fractal Dimensions ◽  
Coagulation Time ◽  
On Line ◽  
Line Detector

The coagulation experiment, with Kaolin as objects, aluminum chloride (PAC) as coagulant and hydrated MnO2 as coagulant aid, were accomplished under different conditions. In the experiment, the particle size distribution and turbidity in water were detected by on-line detector. The results show that increase PAC dosage, original turbidity, hydrated MnO2 dosage and coagulation time will make the fractal dimensions of floc growth in micro-coagulation stage increase. The fractal dimensions of floc growth in micro-coagulation stage increasing means more particle size <5µm flocs are removed. Hydrated MnO2 can strengthen micro-coagulation.

The Research on the Preparation of Sodium-Poly-Methyl-Acrylic and Sodium-Alginate Blend-Micro-Spheres and its Form

2011 ◽  
Vol 311-313 ◽  
pp. 2291-2294
Author(s):  
Lian Hai Shan ◽  
Zhi Bin Zhang ◽  
Qun Lu
Keyword(s):  
Particle Size ◽  
Sodium Alginate ◽  
Influencing Factors ◽  
Radical Reaction ◽  
Volume Ratio ◽  
Free Radical Reaction ◽  
Alginate Solution ◽  
Important Means ◽  
External Form ◽  
Scanning Electron

First, we prepared the Poly-methyl-acrylic Acid hydrogels by free radical reaction, then prepared the Sodium-Poly-methyl-acrylic and Sodium-Alginate blend-micro-spheres by the condensation phase separation method. The influencing factors of the form and the particle size of the blend-micro-spheres were investigated including the content of the Sodium-Poly-methyl-acrylic, the content of the Sodium-Alginate, the content of the calcium chloride and the volume ratio for the Sodium-Poly-methyl-acrylic solution and the Sodium-Alginate solution. We also give a research on the swelling influencing factors of the blend-micro-spheres and observed its internal and external form by the scanning electron microscope (SEM) ; The result showed that: we can get the favorable appearance form blend-micro-spheres when the Content of PMAA 4.0%，the Content of SA 4.0%，the Content of CaCl2 4.0%; and it had a important means when the volume ratio for the Sodium-Poly-methyl-acrylic solution and the Sodium-Alginate solution was 1:4 , 1:1.

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