Iron oxidation-reduction and its impacts on cadmium bioavailability in paddy soils: a review

2012 ◽  
Vol 6 (4) ◽  
pp. 509-517 ◽  
Author(s):  
Chunhua Zhang ◽  
Ying Ge ◽  
Huan Yao ◽  
Xiao Chen ◽  
Minkun Hu
Keyword(s):  
Iron Oxidation ◽  
Paddy Soils ◽  
Oxidation Reduction ◽  
Cadmium Bioavailability

Biological iron oxidation-reduction and the effects on sulfur oxidation-reduction, denitrification and poly-P accumulation in an anaerobic-oxic activated sludge

2002 ◽  
Vol 46 (1-2) ◽  
pp. 55-60 ◽  
Author(s):  
R. Yamamoto-Ikemoto ◽  
T. Komori ◽  
S. Matsui
Keyword(s):  
Activated Sludge ◽  
Sulfate Reduction ◽  
Iron Reduction ◽  
Iron Oxidation ◽  
Sulfur Oxidation ◽  
Monod Equation ◽  
Oxidation Rates ◽  
Oxidation Reduction ◽  
Initial Iron ◽  
P Accumulation

Iron oxidation and reduction were examined using the activated sludge from a municipal plant. Iron contents of the activated sludge were 1–2%. Iron oxidation rates were correlated with the initial iron concentrations. Iron reducing rates could be described by the Monod equation. The effects of iron reducing bacteria on sulfate reduction, denitrification and poly-P accumulation were examined. Iron reduction suppressed sulfate reduction by competing with hydrogen produced from protein. Denitrification was outcompeted with iron reduction and sulfate reduction. These phenomena could be explained thermodynamically. Poly-P accumulation was also suppressed by denitrification. The activity of iron reduction was relatively high.

scholarly journals Kinetics of iron oxidation-reduction in hydrous silicic melts

2002 ◽  
Vol 87 (7) ◽  
pp. 829-837 ◽  
Author(s):  
Fabrice Gaillard ◽  
Bruno Scaillet ◽  
Michel Pichavant
Keyword(s):  
Iron Oxidation ◽  
Oxidation Reduction ◽  
Kinetics Of

Iron oxidation affects nitrous oxide emissions via donating electrons to denitrification in paddy soils

Geoderma ◽  
2016 ◽  
Vol 271 ◽  
pp. 173-180 ◽  
Author(s):  
Milan Wang ◽  
Ronggui Hu ◽  
Jinsong Zhao ◽  
Yakov Kuzyakov ◽  
Shurong Liu
Keyword(s):  
Nitrous Oxide ◽  
Iron Oxidation ◽  
Paddy Soils ◽  
Nitrous Oxide Emissions

Control of filamentous bulking and interactions among sulfur oxidation-reduction and iron oxidation-reduction in activated sludge using an iron coagulant

1998 ◽  
Vol 38 (8-9) ◽  
pp. 9-17 ◽  
Author(s):  
Ryoko Yamamoto-Ikemoto ◽  
Saburo Matsui ◽  
Tomoaki Komori ◽  
Edja Kofi Bosque-Hamilton
Keyword(s):  
Activated Sludge ◽  
Sulfate Reduction ◽  
Iron Oxidation ◽  
Sulfur Oxidation ◽  
Phosphate Removal ◽  
Aeration Tank ◽  
Filamentous Bulking ◽  
Sulfate Reducing ◽  
Oxidation Reduction ◽  
Reducing Bacteria

The effect of iron coagulant on control of filamentous bulking and phosphate removal was investigated using a laboratory scale activated sludge process. Sulfate reduction was correlated to activated sludge bulking. When FeCl2 was added to the aeration tank, most of the phosphate was removed. Sulfate reduction and filamentous bulking were also suppressed. The addition of FeCl2 was also effective in suppressing phosphate release and sulfide production from wasted sludge. Interactions among sulfur oxidation-reduction and iron oxidation-reduction were examined in the batch experiments. When FeCl2 was added, iron reducing bacteria outcompeted sulfate reducing bacteria and iron oxidizing bacteria grew predominantly.

Isotopic reconstruction of iron oxidation-reduction process based on an Archean Ocean analogue

2021 ◽  
pp. 152609
Author(s):  
Xi Yang ◽  
Qingjun Guo ◽  
Valeria Boyko ◽  
Khoren Avetisyan ◽  
Alyssa J. Findlay ◽  
...  
Keyword(s):  
Iron Oxidation ◽  
Reduction Process ◽  
Oxidation Reduction
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