scholarly journals Effects of mixing granular iron with sand on the efficiency of methylene blue discoloration

2012 ◽  
Vol 200-202 ◽  
pp. 433-438 ◽  
Author(s):  
K. Miyajima ◽  
C. Noubactep
Keyword(s):  
Methylene Blue ◽  
Blue Discoloration ◽  
Granular Iron

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.

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

Methylene blue discoloration by heated persulfate in aqueous solution

2012 ◽  
Vol 213 ◽  
pp. 259-271 ◽  
Author(s):  
Antoine Ghauch ◽  
Al Muthanna Tuqan ◽  
Nadine Kibbi ◽  
Sally Geryes
Keyword(s):  
Aqueous Solution ◽  
Methylene Blue ◽  
Blue Discoloration
Sign in / Sign up

Export Citation Format

Share Document