Catalytic degradation of O-cresol using H2 O2 onto Algerian Clay-Na
KAUST DepartmentBiological and Environmental Sciences and Engineering (BESE) Division
Environmental Science and Engineering Program
Water Desalination and Reuse Research Center (WDRC)
Online Publication Date2019-02-08
Print Publication Date2019-02
Permanent link to this recordhttp://hdl.handle.net/10754/631027
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AbstractClay 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.
CitationHerbache H, Ramdani A, Taleb Z, Ruiz-Rosas R, Taleb S, et al. (2019) Catalytic degradation of O-cresol using H2 O2 onto Algerian Clay-Na. Water Environment Research 91: 165–174. Available: http://dx.doi.org/10.1002/wer.1022.
SponsorsFinancial 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.
JournalWater Environment Research