scholarly journals Characterizing the reactivity of metallic iron upon methylene blue discoloration in Fe0/MnO2/H2O systems

2009 ◽  
Vol 168 (2-3) ◽  
pp. 1613-1616 ◽  
Author(s):  
C. Noubactep
Keyword(s):  
Methylene Blue ◽  
Metallic Iron ◽  
Blue Discoloration

scholarly journals Designing metallic iron based water filters: Light from methylene blue discoloration

2016 ◽  
Vol 166 ◽  
pp. 567-573 ◽  
Author(s):  
B.D. Btatkeu-K. ◽  
J.B. Tchatchueng ◽  
C. Noubactep ◽  
S. Caré
Keyword(s):  
Methylene Blue ◽  
Metallic Iron ◽  
Blue Discoloration ◽  
Iron Based ◽  
Water Filters

scholarly journals The Suitability of Methylene Blue Discoloration (MB Method) to Investigate the Fe0/MnO2 System

Processes ◽  
2021 ◽  
Vol 9 (3) ◽  
pp. 548
Author(s):  
Viet Cao ◽  
Ghinwa Alyoussef ◽  
Nadège Gatcha-Bandjun ◽  
Willis Gwenzi ◽  
Chicgoua Noubactep
Keyword(s):  
Methylene Blue ◽  
Time Dependent ◽  
Diffusive Transport ◽  
Mass Loading ◽  
Batch Experiments ◽  
Present Communication ◽  
Iron Corrosion ◽  
Typical Time ◽  
Blue Discoloration

The typical time-dependent decrease of the iron corrosion rate is often difficult to consider while designing Fe0-based remediation systems. One of the most promising approaches is the amendment with manganese dioxide (Fe0/MnO2 system). The resulting system is a very complex one where characterization is challenging. The present communication uses methylene blue discoloration (MB method) to characterize the Fe0/MnO2 system. Shaken batch experiments (75 rpm) for 7 days were used. The initial MB concentration was 10 mg L−1 with the following mass loading: [MnO2] = 2.3 g L−1, [sand] = 45 g L−1, and 0 < [Fe0] (g L−1) ≤ 45. The following systems where investigated: Fe0, MnO2, sand, Fe0/MnO2, Fe0/sand, and Fe0/MnO2/sand. Results demonstrated that MB discoloration is influenced by the diffusive transport of MB from the solution to the aggregates at the bottom of the test-tubes. Results confirm the complexity of the Fe0/MnO2/sand system, while establishing that both MnO2 and sand improve the efficiency of Fe0/H2O systems in the long-term. The mechanisms of water decontamination by amending Fe0-based systems with MnO2 is demonstrated by the MB method.

57Fe-Mössbauer study and methylene blue decomposing effect of nanoparticle mixtures composed of metallic iron and maghemite

2017 ◽  
Vol 722 ◽  
pp. 94-100 ◽  
Author(s):  
Balázs Kobzi ◽  
Yuka Watanabe ◽  
Kazuhiko Akiyama ◽  
Ernő Kuzmann ◽  
Zoltán Homonnay ◽  
...  
Keyword(s):  
Methylene Blue ◽  
Metallic Iron ◽  
Mössbauer Study ◽  
57Fe Mössbauer

Decomposition mechanism of methylene blue caused by metallic iron-maghemite mixture

2012 ◽  
Vol 218 (1-3) ◽  
pp. 47-52 ◽  
Author(s):  
Shiro Kubuki ◽  
Koya Shibano ◽  
Kazuhiko Akiyama ◽  
Zoltán Homonnay ◽  
Ernő Kuzmann ◽  
...  
Keyword(s):  
Methylene Blue ◽  
Metallic Iron ◽  
Decomposition Mechanism

Decomposition mechanism of methylene blue caused by metallic iron-maghemite mixture

ISIAME 2012 ◽  
2012 ◽  
pp. 203-208
Author(s):  
Shiro Kubuki ◽  
Koya Shibano ◽  
Kazuhiko Akiyama ◽  
Zoltán Homonnay ◽  
Ernő Kuzmann ◽  
...  
Keyword(s):  
Methylene Blue ◽  
Metallic Iron ◽  
Decomposition Mechanism
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