Activation of persulfate by magnetic MnFe2O4-bentonite for catalytic degradation of 2,4-dichlorophenol in aqueous solutions

2017 ◽  
Vol 33 (3) ◽  
pp. 415-421 ◽  
Author(s):  
Yongsheng Zhao ◽  
Qin Li ◽  
Hejun Ren ◽  
Rui Zhou
Keyword(s):  
Aqueous Solutions ◽  
Catalytic Degradation

scholarly journals Catalytic degradation of real-textile azo-dyes in aqueous solutions by using Cu–Co/halloysite

2019 ◽  
Vol 42 (4) ◽  
Author(s):  
Juan A Torres-Luna ◽  
Gloria I Giraldo-Gómez ◽  
Nancy R Sanabria-González ◽  
José G Carriazo
Keyword(s):  
Aqueous Solutions ◽  
Azo Dyes ◽  
Catalytic Degradation

scholarly journals Catalytic degradation of methylene blue in aqueous solutions over Ni- and Co- oxide systems

2011 ◽  
Vol 9 (6) ◽  
pp. 1000-1007 ◽  
Author(s):  
Maria Stoyanova ◽  
Stoyanka Christoskova
Keyword(s):  
Methylene Blue ◽  
Aqueous Solutions ◽  
Degradation Kinetics ◽  
Oxidative Degradation ◽  
Oxide System ◽  
Catalytic Degradation ◽  
Blue Dye ◽  
Oxide Systems ◽  
First Order Kinetics ◽  
Degradation Reaction

AbstractThe oxidative catalytic degradation of the cationic dye methylene blue (MB) with NaOCl in aqueous solutions was studied using individual and iron modified Ni- and Co-oxide systems as catalysts. The adsorption extent and the contribution of the uncatalyzed oxidation on the overall degree of MB were determined. The results indicate that methylene blue—a representative of a class of dyestuffs resistant to biodegradation—could be successfully decolorized and degraded using nickel and cobalt oxide catalysts at room temperature. The highest catalytic activity manifests in the Co-oxide system which is consistent with the adsorption data. The oxidative degradation reaction proceeds via first-order kinetics. Temperature has a relatively small effect on the methylene blue degradation kinetics. The results obtained reveal that the catalysts investigated are suitable for oxidative destruction of methytlene blue dye in wastewaters.

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