scholarly journals Bioavailability of iron in cottonseed meal, ferric sulfate, and two ferrous sulfate by-products of the galvanizing industry

1998 ◽  
Vol 77 (9) ◽  
pp. 1388-1392 ◽  
Author(s):  
S.D. Boling ◽  
H.M. Edwards ◽  
J.L. Emmert ◽  
R.R. Biehl ◽  
D.H. Baker
Keyword(s):  
Cottonseed Meal ◽  
Ferrous Sulfate ◽  
Ferric Sulfate ◽  
By Products

The Oxidation of Ferrous Sulfate to Ferric Sulfate by Means of Air.

1923 ◽  
Vol 15 (12) ◽  
pp. 1271-1272 ◽  
Author(s):  
J. H. Reedy ◽  
J. S. Machin
Keyword(s):  
Ferrous Sulfate ◽  
Ferric Sulfate

Effect of Sugarbeet By-Products on the Solubility and Availability of Ferrous Sulfate in Soil

2001 ◽  
Vol 38 (2) ◽  
pp. 153-172 ◽  
Author(s):  
R. Jay Goos ◽  
Brian E. Johnson ◽  
Ryan A. Peterson ◽  
Nathalie Kobes
Keyword(s):  
Ferrous Sulfate ◽  
By Products

Effect of inoculation of iron oxidizing bacteria on elution of copper from anaerobically digested sewage sludge

1998 ◽  
Vol 38 (2) ◽  
pp. 63-70 ◽  
Author(s):  
Ayumi Ito ◽  
Teruyuki Umita ◽  
Jiro Aizawa ◽  
Kumiko Kitada
Keyword(s):  
Sulfuric Acid ◽  
Sewage Sludge ◽  
Ferrous Sulfate ◽  
Ferric Sulfate ◽  
Ferrous Ion ◽  
Ferric Ion ◽  
Biological Oxidation ◽  
Iron Oxidizing Bacteria ◽  
Elution Rate ◽  
Digested Sewage Sludge

The effect of inoculation of iron oxidizing bacteria on elution of Cu from anaerobically digested sewage sludge was investigated without adding ferrous sulfate as a substrate. The inoculation of iron oxidizing bacteria to the sludge brought about the effective elution of Cu at pH 2 and 3. Ferric ion produced by the biological oxidation of ferrous ion which was eluted from the sludge or ferric ion eluted directly from the sludge and iron oxidizing bacteria caused the elution of Cu. Furthermore, both chemical and biological leachings of Cu from CuS were studied at pH 2, 3 and 4. It was found that both ferric ion and iron oxidizing bacteria could elute Cu. The elution rate of Cu with ferric ion decreased as the pH increased and two moles of Fe(III) eluted 1 mole of Cu. The biological leaching by iron oxidizing bacteria eluted Cu more effectively than the chemical one with sulfuric acid or ferric sulfate at pH 2, 3 and 4.

Stability of Salvia miltiorrhiza Bge Extract and its Application on Silk

2011 ◽  
Vol 331 ◽  
pp. 257-260
Author(s):  
Sha Sha Sun ◽  
Jie Jie Wang ◽  
Ren Cheng Tang
Keyword(s):  
Ultraviolet Light ◽  
Ferrous Sulfate ◽  
Salvia Miltiorrhiza ◽  
Ferric Sulfate ◽  
Fastness Properties ◽  
Light Fastness ◽  
Protective Properties ◽  
Acidic Conditions ◽  
Uv Protective Properties ◽  
The Stability

The stability of Salvia miltiorrhiza Bge (SMB) extract and its dyeing and ultraviolet protective properties on silk were investigated. The results indicated that SMB extract was stable at acidic conditions and stable to heat and ultraviolet light. The building-up and UV-protective properties of SMB extract for silk were good and can be enhanced by mordanting with ferrous and ferric sulfate and copper sulfate. The light fastness rating was improved using ferric sulfate, while the washing and light fastness properties were worsen using ferrous sulfate.

Process Optimization for the Production of Ferric Sulfate Coagulant by the Oxidation of Ferrous sulfate with Hydrogen Peroxide

2020 ◽  
Vol 15 (3) ◽  
Author(s):  
Veronica Barbosa Mazza ◽  
Luiz Alberto Cesar Teixeira ◽  
Ana Rosa Fonseca de Aguiar Martins ◽  
Brunno Ferreira dos Santos
Keyword(s):  
Hydrogen Peroxide ◽  
Ferrous Sulfate ◽  
Oxidation Reaction ◽  
Reaction Medium ◽  
Industrial Process ◽  
Oxidation Potential ◽  
Ferric Sulfate ◽  
Optimum Conditions ◽  
Independent Variables ◽  
Stoichiometric Amount

AbstractMotivated by the oxidative power of hydrogen peroxide and its environmentally attractive properties, the present study aimed to determine the optimum conditions for the production of ferric sulfate coagulant from ferrous sulfate The independent variables studied were the temperature (7.5–27.5 °C), amount of hydrogen peroxide (100–300 %) of the stoichiometric amount for the oxidation reaction, and dilution of the reaction medium using water (100–300 %) of the stoichiometric amount for the oxidation reaction. For the optimum conditions achieved, it was possible to obtain a conversion of 96.17 % of Fe+2 to Fe+3, using a small hydrogen peroxide excess of 50 %, resulting in a product suitable for use as a coagulant in water treatment. It was found that an oxidation potential (Eh) greater than 0.7 volts corresponded to the conversion of Fe+2 to Fe+3 greater than 90 %, indicating Eh to be useful for reaction control in an industrial process.

scholarly journals Effect on the Formation of Fe3O4with Ferrous Sulfate/Ferric Sulfate Molar Ratio and Precipitants

2011 ◽  
Vol 21 (5) ◽  
pp. 157-162
Author(s):  
Tae-Hyoung Eom ◽  
Sam-Joong Kim ◽  
Suk-Jin An ◽  
Kyoung-Hwan Oh ◽  
Dong-Soo Suhr
Keyword(s):  
Ferrous Sulfate ◽  
Ferric Sulfate ◽  
Molar Ratio

scholarly journals In situ rumen degradation characteristics and bacterial colonization of whole cottonseed, cottonseed hull and cottonseed meal with different gossypol content

AMB Express ◽  
2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Wei-Kang Wang ◽  
Yan-Lu Wang ◽  
Wen-Juan Li ◽  
Qi-Chao Wu ◽  
Kai-Lun Yang ◽  
...  
Keyword(s):  
Cottonseed Meal ◽  
Free Gossypol ◽  
Degradation Mechanism ◽  
Bacterial Colonization ◽  
Nutrient Use Efficiency ◽  
Neutral Detergent Fibre ◽  
Cottonseed Hull ◽  
Whole Cottonseed ◽  
By Products

AbstractRegarding whole cottonseed (WCS), cottonseed meal (CSM), and cottonseed hull (CSH), in situ rumen incubation was applied to determine their nutrient and gossypol degradation characteristics and bacterial colonization profile in lactating Holstein cows. Nylon bags containing the cotton by-products were incubated for 0, 6, 12, 24, 36, 48 and 72 h in the rumen, respectively. The relationship between nutrient degradability and free gossypol (FG) content were examined, and the differences in the composition and inferred gene function of the colonized microbiota were studied. As a result, CSM presented highest effective degradability of dry matter, neutral detergent fibre and acid detergent fibre, but the highest effective degradability of crude protein was found in WCS. Free gossypol disappearance rate increased significantly in the first 6 h, and it reached approximately 94% at 72 h of incubation among all samples. The level of FG did not affect nutrient degradability of cotton by-products. Significant differences were noted in attached bacterial community structure among cotton by-products after 24 h rumen incubation. Among the most abundant taxa at genus level, a greater abundance of Cercis gigantea and Succiniclasticum was observed in WCS samples, whereas the CSH and CSM samples contained a greater proportion of Prevotella 1 and Rikenellaceae RC9 gut group. The redundancy analysis revealed that the level of neutral detergent fibre, ether extract, and FG in cotton by-products were significantly positive related with the composition of the attached bacteria. Collectively, our results revealed the dynamics of degradation characteristics, and the difference in the composition of bacterial colonization. These findings are of importance for the targeted improvement of cotton by-products nutrient use efficiency in ruminants and further understanding of the gossypol degradation mechanism in the rumen.

MICROBIOLOGICAL FORMATION OF BASIC FERRIC SULFATES

1973 ◽  
Vol 53 (3) ◽  
pp. 315-323 ◽  
Author(s):  
K. C. IVARSON
Keyword(s):  
Liquid Medium ◽  
Ferrous Sulfate ◽  
Metamorphic Rock ◽  
Solid Medium ◽  
Thiobacillus Ferrooxidans ◽  
Ferric Sulfate ◽  
Uranium Mine ◽  
Natural Conditions

The iron-oxidizing bacterium Thiobacillus ferrooxidans was isolated from yellow-brown deposits found in soil, shale, metamorphic rock, and a uranium mine. In addition to the bacterium and pyrite, jarosite (K Fe3(SO4)2(OH)6), a basic ferric sulfate, was found to be present in the deposits. Oxidation of ferrous sulfate by the organism in liquid medium resulted in the formation of jarosite. On a solid medium of agar containing ferrous sulfate, ammoniojarosite (NH4Fe3(SO4)2(OH)6) was formed. Because jarosite can be synthesized at 25 C and 1 atm, it" is suggested that under natural conditions T. ferrooxidans plays a role in the formation of basic ferric sulfates.

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