• Dr. Hrishikesh Sarma
• Ananya Das

Persistent catalytic wet oxidation (CWO) was explored as an acceptable technique for the industrial wastewater treatment contaminated with phenols and its derivatives. The core of this study is to evaluate the catalytic performance of Co (II)-impregnated Silica for the wet oxidation of 2-chlorophenol (2-CP) in water with or without the presence of the common chemical oxidant, H2O2. Use of oxidant H2O2 in the process is known as catalytic wet peroxide oxidation (CWPO). The catalyst was developed by refluxing silica (60-120 mesh) with conc. H2SO4 and then with aqueous Cobalt nitrate hexahydrate, [Co (NO3)2].6H2O for 6h. The structural aspects of the catalysts were determined with powder XRD, FTIR, CEC and TGA measurement. The surface framework was studied with the help of Scanning Electron Microscope (SEM),mineralization can be acquire with COD and the amount of Co(II) entering into silica matrix was evaluate with atomic absorption spectrometry(AAS). The material was calcined at 873 K before using as a catalyst. The oxidation was carried out in a high-pressure stirred reactor at different temperatures and other process variables. The assessment results indicate that the use of this catalyst allows a convenient elimination of 2-chlorophenol (93.7% degradation) and a significant removal of chemical oxygen demand (60.1%). Results shows that with preferment of temperature, catalyst load and mole ratio of H2O2 in the feed, the oxidative conversion could be further improved both in presences of the chemical oxidant and in absence of it. Termination of various reaction conditions, kinetics of the process has been discussed.

CWO, CWPO; Co (II)-impregnated Silica; 2-CP

"Catalytic Wet Peroxide Oxidation of 2-Chlorophenol with Co(II)-impregnated Silica", International Journal of Emerging Technologies and Innovative Research (www.jetir.org), ISSN:2349-5162, Vol.6, Issue 5, page no.1620-1629, May-2019, Available :http://www.jetir.org/papers/JETIR1905T35.pdf

"Catalytic Wet Peroxide Oxidation of 2-Chlorophenol with Co(II)-impregnated Silica", International Journal of Emerging Technologies and Innovative Research (www.jetir.org | UGC and issn Approved), ISSN:2349-5162, Vol.6, Issue 5, page no. pp1620-1629, May-2019, Available at : http://www.jetir.org/papers/JETIR1905T35.pdf