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Abstract Phenol (Ph) and some of its derivatives such as para chloro-phenol (PCP) have received considerable attention from environmental scientists and engineers, due to their undesirable effects in the water environment, where they end up as a result of improper disposal methods. As a consequence, research has been conducted all around the world with the common goal of reducing their concentrations to allowable limits or converting them to non-toxic, non-hazardous forms that may easily be handled by natural decay processes. This report describes a system developed to degrade these substances using sonochemical reactions. Sonochemical degradation of phenolic compounds were carried out in the presence and absence of NaCl, Na2SO4, Na2CO3, NaNO3 and H2O2. In sonochemical degradation of phenol in sonicatior hight degradation rate was obtained in the presence of additives H2O2 and followed the order: Ph+H2O2 > Ph+Na2SO4 ? Ph+NaCl > Ph (0 mM salt & additive) ? Ph+NaNO3 > Ph+Na2CO3. Whereas, in case of parachlorophenol (PCP) hight rate was obtained in the presec of H2O2 and they followed the order: PCP+H2O2 > PCP+NaCl > PCP+Na2SO4 ? PCP (0 mM salt & additive) > PCP+Na2CO3 > PCP + NaNO3.
Uddin, Md., H., Hossain, Md., J., Islam, Md., S. (2018), Sonochemical Degradation of Phenol and Para-Chlorophenol in an Ultrasonic bath in the Presence of Inorganic Salts and H2O2. International Journal For Empirical Education and Research, 2(6), 53-63.
Uddin, Md., H., Hossain, Md., J., Islam, Md., S. (2018) "Sonochemical Degradation of Phenol and Para-Chlorophenol in an Ultrasonic bath in the Presence of Inorganic Salts and H2O2", International Journal For Empirical Education and Research, 2(6), pp.53-63.
Uddin, Md., H., Hossain, Md., J., Islam, Md., S.. Sonochemical Degradation of Phenol and Para-Chlorophenol in an Ultrasonic bath in the Presence of Inorganic Salts and H2O2. International Journal For Empirical Education and Research. 2018; 2(6): 53-63.
Uddin, Md., H., Hossain, Md., J., Islam, Md., S.. Sonochemical Degradation of Phenol and Para-Chlorophenol in an Ultrasonic bath in the Presence of Inorganic Salts and H2O2. International Journal For Empirical Education and Research. 2018; 2(6): 53-63.
Uddin, Md., H., Hossain, Md., J., Islam, Md., S.. Sonochemical Degradation of Phenol and Para-Chlorophenol in an Ultrasonic bath in the Presence of Inorganic Salts and H2O2. International Journal For Empirical Education and Research. 2018; 2(6): 53-63.
Lesko, T. M., (2004), Chemical Effects of Acoustic Cavitation, Ph.D. thesis reported in California Institute of Technology, Pasadena, California, USA.
Entezari, M. H. and Petrier, C., (2004), A combination of ultrasound and oxidative enzyme: sono-biodegradation of phenol. Appl. Catal. B- Environ, 53, 257-263.
Entezari, M. H. and Petrier, C., (2005), A combination of ultrasound and oxidative enzyme: sono-enzyme degradation of phenols in a mixture. Ultrason. Sonochem. 12, 283-288.
Mahamuni, N. N. and Pandit, A. B., (2005), Effect of additives on ultrasonic degradation of phenol. Ultrason. Sonochem, 13 (2), 165-174.
Lathasreea, S., Nageswara, R. A., SivaSankarb, B., Sadasivamb, V. and Rengarajb, K., (2004). Heterogeneous photocatalytic mineralisation of phenols in aqueous solutions. Mol. Catal. A- Chem., 223, 101-105.
Beltran, F. J., Rivas, F. J. and Gimeno, O., (2005), Comparison between photocatalytic ozonation and other oxidation processes for the removal of phenols from water, Chem. Technol. Biot, 80 (9), 973-984(12).
Alnaizy, R.; Akgerman, A., (2000), Advanced oxidation of phenolic compounds. Adv. Environ. Res., 4 (3), 233-244.
Maleki, A., Zazoli, M. A.; Eslami, A., (2005), Adsorption of phenol by commercial powdered activated carbon in aqueous solution. Al-Haitham. J. Sci. Tech., 1 (1), 73- 78.
Entezari, M. H.; Petrier, C.; Devidal, P., (2003), Sonochemical degradation of phenol in water: a comparison. A comparison of classical equipment with a new cylindrical reactor, Ultrason. Sonochem. 10 (2) 103-108.
Wu, C., Liu, X., Wei, D., Fan, J. and Wang, L., (2001), Photosonochemical degradation of phenol in water. Water. Res., 35 (16), 3927-3933.
Nikolopoulos, A. N., Igglessi-Markopoulou, O. and Papayannakos, N., (2005), Ultrasound assisted catalytic wet peroxide oxidation of phenol: kinetics and intraparticle diffusion effects. Ultrason. Sonochem, 13(1), 92-97.
Naffrechoux, E., Chanoux, S., Pe´trier, C. and Suptil, J., (2000), Sonochemical and photochemical oxidation of organic matter. Ultrason. Sonochem, 7, 255-260.
Esplugas, S.; Gimenez, J.; Contreras, S.; Pascual, E.; Rodriguez, M., (2002), Comparison of different advanced oxidation processes for phenol degradation. Water Res., 36 (4), 1034-1042.
Suslick KS, Price G (1999), Applications of ultrasound to materials chemistry. Annu Rev Matl Sci, 29: 295-326.
Zheng W (2004), Mechanistic study of pollutant degradation. [PhD thesis] Department of Chemistry, University of New Orieands.
Goel M., Hongqiang H., Mujumdar A.S., Ray M.B., Sonochemical decomposition of volatile and non–volatile organic compounds—a comparative study, Water Res. 38 (2004) 4247–4261.
Kormann C., Bahnemann D.W., Hoffmann M.R., Photocatalytic production of H2O2 and organic peroxides in aqueous suspensions of TiO2, ZnO, and desert sand, Environ. Sci. Technol. 22 (1988) 798–806.
Mahmoodi N.M, Arami M, Limaee N.Y, Tabrizi N.S, Decolorization and aromatic ring degradation kinetics of direct red 80 by UV oxidation in the presence of hydrogen peroxide utilizing TiO2 as a photocatalyst, Chem. Eng. J. 112 (2005) 191-196.
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