Cationic Effect of Ferrous Ions on Sulfide Capacity of CaO-FetO-Al2O3-SiO2 Slag System

2019 ◽  
Vol 50 (6) ◽  
pp. 2758-2768 ◽  
Author(s):  
Joon Sung Choi ◽  
Dong Joon Min
Keyword(s):  
Sulfide Capacity ◽  
Slag System ◽  
Ferrous Ions ◽  
Cationic Effect

Evaluation of Sulfide Capacity Models and Application in Steelmaking Slags

2011 ◽  
Vol 284-286 ◽  
pp. 147-152 ◽  
Author(s):  
Hai Yan Tang ◽  
Jing She Li ◽  
Han Jie Guo
Keyword(s):  
Distribution Ratio ◽  
Equilibrium Distribution ◽  
Sulfide Capacity ◽  
Slag System ◽  
Slag Basicity ◽  
Optical Basicity ◽  
Factors Affecting ◽  
Steelmaking Slags

The sulfide capacity (CS) and equilibrium distribution ratio of sulphur (LS) are important indicators to measure desulfurization capacity of slag system. The sulfide capacities of CaO-SiO2-MgO-Al2O3-FetO slags are calculated by optical basicity model and KTH model, and compared with measured values in literature. The results show that the values calculated by KTH model are nearer to measured values than by optical basicity model, so the former can be used to predictCSof different slag compositions. The factors affectingCSare also studied in detail. The results show thatCSincreases with increasing slag basicity and temperature and decreases with increasing MgO and Al2O3contents in slag.

Cationic effect of charge compensation on the sulfide capacity of aluminosilicate slags

2018 ◽  
Vol 101 (7) ◽  
pp. 2856-2867 ◽  
Author(s):  
Joon Sung Choi ◽  
Youngjoo Park ◽  
Sunghee Lee ◽  
Dong Joon Min
Keyword(s):  
Sulfide Capacity ◽  
Charge Compensation ◽  
Cationic Effect

Antioxidant Activity, Phenolic Content and Hematoprotective Effects of Cleome arabica Polyphenolic Leaf Extract

2019 ◽  
Author(s):  
C. Tigrine ◽  
A. Kameli
Keyword(s):  
Antioxidant Activity ◽  
Biological Effects ◽  
Reducing Power ◽  
Hematological Toxicity ◽  
Protective Effects ◽  
Ferrous Ions ◽  
Polyphenolic Extract ◽  
Cleome Arabica

In this study a polyphenolic extract from Cleome arabica leaves (CALE) was investigated for its antioxidant activity in vitro using DPPH•, metal chelating and reducing power methods and for its protective effects against AraC-induced hematological toxicity in vivo using Balb C mice. Results indicated that CALE exhibited a strong and dose-dependent scavenging activity against the DPPH• free radical (IC50 = 4.88 μg/ml) and a high reducing power activity (EC50 = 4.85 μg/ml). Furthermore, it showed a good chelating effects against ferrous ions (IC50 = 377.75 μg/ml). The analysis of blood showed that subcutaneous injection of AraC (50 mg/kg) to mice during three consecutive days caused a significant myelosupression (P < 0.05). The combination of CALE and AraC protected blood cells from a veritable toxicity. Where, the number of the red cells, the amount of hemoglobin and the percentage of the hematocrite were significantly high. On the other hand, AraC cause an elevation of body temperature (39 °C) in mice. However, the temperature of the group treated with CALE and AraC remained normal and did not exceed 37.5 °C. The observed biological effects of CALE, in vitro as well as in vivo, could be due to the high polyphenol and flavonoid contents. In addition, the antioxidant activity of CALE suggested to be responsible for its hematoprotective effect.

Relevant Modulation by Ferrous Ions of N-Methyl-D-Aspartate Receptors in Ischemic Brain Injuries

2004 ◽  
Vol 1 (5) ◽  
pp. 429-440 ◽  
Author(s):  
Noritaka Nakamichi ◽  
Hirotaka Oikawa ◽  
Yuki Kambe ◽  
Yukio Yoneda
Keyword(s):  
Brain Injuries ◽  
Ferrous Ions ◽  
Ischemic Brain

The production of ferrous ions driven by anaerobic degradation of plant biomass and improved phosphorus removal in constructed wetlands

2021 ◽  
Vol 293 ◽  
pp. 126152
Author(s):  
Chang Su ◽  
Luoying Lin ◽  
Meiling Zhang ◽  
Haitao Zhong ◽  
Guangwei Yu ◽  
...  
Keyword(s):  
Constructed Wetlands ◽  
Phosphorus Removal ◽  
Anaerobic Degradation ◽  
Plant Biomass ◽  
Ferrous Ions

Blast Furnace Ironmaking Process with Super-High TiO2 in the Slag: Sulfide Capacity

2021 ◽  
Author(s):  
Jiawei Ling ◽  
Zhengde Pang ◽  
Yuyang Jiang ◽  
Zhiming Yan ◽  
Xuewei Lv
Keyword(s):  
Blast Furnace ◽  
Sulfide Capacity ◽  
Blast Furnace Ironmaking ◽  
Ironmaking Process

scholarly journals Synergistic activation of persulfate by natural chalcocite and ferrous ions by promoting the cycling of Fe3+/Fe2+ couple for degradation of organic pollutants

2021 ◽  
Vol 212 ◽  
pp. 111975
Author(s):  
Guang-En Yuan ◽  
Yingzhi Qin ◽  
Mingyang Feng ◽  
Weiting Zhang ◽  
Xiangli Ru ◽  
...  
Keyword(s):  
Organic Pollutants ◽  
Ferrous Ions ◽  
Synergistic Activation

scholarly journals Antioxidant and Cryoprotective Effects of Bone Hydrolysates from Bighead Carp (Aristichthys nobilis) in Freeze-Thawed Fish Fillets

Foods ◽  
2021 ◽  
Vol 10 (6) ◽  
pp. 1409
Author(s):  
Yiqi Zhang ◽  
Ye Dong ◽  
Zhiyuan Dai
Keyword(s):  
Antioxidant Activity ◽  
Thiobarbituric Acid ◽  
Fish Bone ◽  
Bighead Carp ◽  
Vacuum Impregnation ◽  
Ferrous Ions ◽  
Freezing And Thawing ◽  
Aristichthys Nobilis ◽  
Fish Fillets

Bone hydrolysates from bighead carp (Aristichthys nobilis) were prepared using Protamex and Alcalase with degrees of hydrolysis (DH) of 5%, 10% and 15%. The antioxidant activity of bone hydrolysates was evaluated in vitro and then the hydrolysates with better antioxidant activity were used to immerse bighead carp fillets through a vacuum impregnation process at concentrations of 1% and 2%. Among the six hydrolysates, fish bone hydrolyzed with Protamex at DH 10% exhibited the highest ability to scavenge 1, 1-diphenyl-2-picrylhydrazyl (DPPH) (88.79%), 2, 2′-azino-bis-3-ethylbenzthiazoline-6-sulphonic acid (ABTS) (57.76%) and hydroxyl radicals (62.72%), as well as to chelate ferrous ions (91.46%). The hydrolysates effectively postponed freezing- and thawing-induced protein/lipid oxidation. Compared with the fillets without treatment, the impregnated fillets had higher sulfhydryl contents, greater Ca2+-ATPase activity, lower carbonyls and lower thiobarbituric acid-reactive substances (TBARS). Bone hydrolysates also have a positive effect on the texture and water-holding ability of freeze-thawed fish fillets. Fish bone hydrolysates of Protamex could serve as potential antioxidants to preserve fish fillets.

Ferrous Ions Inhibit Cu Uptake and Accumulation via Inducing Iron Plaque and Regulating Metabolism of Rice Plants Exposed to CuO Nanoparticles

2021 ◽  
Author(s):  
Peng Yuan ◽  
Cheng Peng ◽  
Jiyan Shi ◽  
Jianshe Liu ◽  
Dongqing Cai ◽  
...  
Keyword(s):  
Cuo Nanoparticles ◽  
Iron Plaque ◽  
Ferrous Ions ◽  
Rice Plants ◽  
Cu Uptake

Ferrous ions (Fe2+) in the rhizosphere play an indispensable role in the interaction between plants and nanoparticles (NPs). Here, we investigated the effect of Fe2+ (3 mM) on the dynamic...

Study of the Removal of Boron from Metallurgical Grade Silicon by Oxidation Slagging Method

2010 ◽  
Vol 156-157 ◽  
pp. 882-885 ◽  
Author(s):  
Yu Yan Hu ◽  
Dong Liang Lu ◽  
Tao Lin ◽  
Yu Liu ◽  
Bo Wang ◽  
...  
Keyword(s):  
Removal Efficiency ◽  
Orthogonal Experiment ◽  
Slag System ◽  
Refining Process ◽  
Impact Factors ◽  
Metallurgical Grade Silicon ◽  
Optimum Parameters ◽  
Grade Silicon ◽  
Refining Time ◽  
The Impact

Refining of solar grade silicon by metallurgical method is the research hotspot of polycrystalline field. Slagging method is benefit to the removal of the impurities especially to boron exsisted in the raw silicon. In this study, the influence of the density, the viscosity and liquidus temperature of the slag components on the refining process were discussed, and then the slag system SiO2-Na2CO3 was choosed as the slagging agents. And then the impact factors on the removal efficiency of boron such as the composition of SiO2 and Na2CO3, the ratio of slag to silicon and the refining time were investigated by the orthogonal experiment. The results showed that the optimum parameters of the oxidation refining for removing boron were as follows: the main composition of the oxidant is “SiO2 : Na2CO3 = 60% : 40%”; the slag/silicon ratio is 0.5; time for refining is 60min at 1550 . The results indicated that the removal efficiency of boron was 88.28%, and the content of boron in MG-Si can be reduced to 7ppmw under the best refining process¬.

Sign in / Sign up

Export Citation Format

Share Document