Cobalt-exchanged natural zeolite catalysts for catalytic oxidation of phenolic contaminants in aqueous solutions. (August 2016)

• Record Type: Journal Article
• Authors: Saputra, Edy; Budihardjo, Mochamad Arief; Bahri, Syaiful; Pinem, Jhon Armedi
• Is Part Of: Journal of water process engineering. Volume 12(2016)
• Page Start: 47
• Page End: 51
• Publication Date: 2016-08
• Subjects: Cobalt exchanged zeolite -- Phenol removal -- Zero-order kinetics -- Advanced oxidation; Water-supply engineering -- Periodicals; Saline water conversion -- Periodicals; Seawater -- Distillation -- Periodicals; Sanitary engineering -- Periodicals; Sewage -- Purification -- Periodicals; 627
• DOI: 10.1016/j.jwpe.2016.05.012
• Languages: English
• ISSNs: 2214-7144

Abstract

Abstract: Indonesia (IZ) and Australia (AZ) natural zeolites were employed to prepare cobalt exchanged catalysts. Characterization tests of scanning electron microscopy (SEM), X-ray diffraction (XRD) and Brunaeuer-Emmet-Teller (BET) were used for performing sample analyses. The efficiencies of phenol removal on the catalysts were evaluated by the catalytic oxidation of phenol with sulfate radicals. Cobalt-exchanged catalysts showed higher phenol removal efficiencies than adsorption, Oxone self-oxidation and unmodified zeolites. The reactions were observed to be more efficiently described by the zero-order kinetics, while the respective Co/IZ and Co/AZ activation energies were 44.1 and 59.5. This study provides a novel application of low-cost natural zeolites for environmental remediation.