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A Novel Catalyst from Water Treatment Sludge for Catalytic Ozonation to Degrade Phenol |
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| รหัสดีโอไอ | |
| Creator | 1. Apiradee Sukmilin 2. Banjong Boonchom 3. Chalor Jarusutthirak |
| Title | A Novel Catalyst from Water Treatment Sludge for Catalytic Ozonation to Degrade Phenol |
| Publisher | Thai Society of Higher Education Institutes on Environment |
| Publication Year | 2562 |
| Journal Title | EnvironmentAsia |
| Journal Vol. | 12 |
| Journal No. | 2 |
| Page no. | 24-31 |
| Keyword | Catalytic ozonation, Degradation, Phenol, Water treatment sludge |
| URL Website | http://www.tshe.org/ea/index.html |
| Website title | EnvironmentAsia |
| ISSN | 1906-1714 |
| Abstract | Water treatment sludge (WTS) from a water treatment plant has been successfully converted into a novel catalyst. Catalytic ozonation using the WTS as a catalyst for degradation of phenol was studied. Water treatment sludge was dried naturally for 7 days, then grounded and sieved through a standard mesh with a size no. of 100, equivalent to less than 150 micron in size. The WTS was characterized by X-ray fluorescence spectrometer (XRF) and X-ray diffractometer (XRD). The XRF analysis showed that water treatment sludge contained silica of 49.90%, Aluminum oxide of 24.40 %, and ferric oxide of 10.40 %. The XRD analysis illustrated that the structure of water treatment sludge was similar to that of kaolin clay. Factors affecting phenol removal efficiency including reaction time (0, 5, 10, 15, 30, 60, 90 and 120 min), pH (3, 7, and 11) and catalyst dosage (1, 3 and 5 g/L) were investigated. At the optimum conditions, i.e. reaction time of 120 min, pH of 11, and catalyst dosage of 3 g/L, the removal efficiency of phenol was 59.16% which was higher than that of sole ozonation (44.61%). According to kinetic analysis, it was found that the experimental data fit well with pseudo-first order kinetic model with a rate constant (Kobs) of 0.0347 per min while that of sole ozone was 0.0162 per min. |
