Catalytic degradation of O-cresol using H2 O2 onto Algerian Clay-Na

Hayat Herbache, Amina Ramdani, Zoubida Taleb, Ramiro Ruiz-Rosas, Safia Taleb, Emilia Morallón, Laurence Pirault-Roy, NorEddine Ghaffour

Research output: Contribution to journalArticlepeer-review

6 Scopus citations


Clay material is used as a catalyst to degrade an organic pollutant. This study focused on the O-cresol oxidative degradation in aqueous solution by adding H2 O2 and Mont-Na. The catalytic tests showed a high catalytic activity of Mont-Na, which made it possible to achieve more than 84.6% conversion after 90 min of reaction time at 55°C in 23.2 mM H2 O2 . The pH value was found to be negatively correlated with the degradation rate of O-cresol. UV-Vis spectrophotometry revealed that the increase of degradation rate at low pH is related to the formation of 2-methylbenzoquinone as intermediate product. In addition, the content of iron in Mont-Na decreased after the catalytic test, bringing further evidence about the O-cresol catalytic oxidation. The mineralization of O-cresol is also confirmed by the different methods of characterization of Mont-Na after the catalytic oxidation test. The effect of the O-cresol oxidation catalyzed by natural clay is significant. PRACTITIONER POINTS: Algerian Montmorillonite-Na is used as a catalyst to degrade an organic pollutant: O-cresol. It shows a great potential for catalyst properties in the presence of the oxidizing reagent H2 O2 . It proved to be an effective means for the degradation of O-cresol contained in wastewaters.
Original languageEnglish (US)
Pages (from-to)165-174
Number of pages10
JournalWater Environment Research
Issue number2
StatePublished - Feb 8 2019

Bibliographical note

KAUST Repository Item: Exported on 2020-10-01
Acknowledgements: Financial support for this work by the Algerian Directorate General of Scientific Research and Technological Development (DGRSDT) and the Ministry for Higher Education and Scientific Research is gratefully appreciated. The authors would like to thank the staff of Servicios Te′cnicos de Investigacio′n (SSTTI) of the University of Alicante for performing characterization.


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