NiO-CeO2 Nano-Catalyst for the Removal of Priority Organic Pollutants from Wastewater through Catalytic Wet Air Oxidation at Mild Conditions
Catalytic wet air oxidation (CWAO) is normally carried out at elevated temperature and pressure. This work investigates the potential of NiO-CeO2 nano-catalyst in CWAO of paper industry wastewater under milder operating conditions of 90 °C and 1 atm. The NiO-CeO2 nano-catalysts were synthesized by a simple co-precipitation method and characterized by X-ray diffraction (XRD), before and after use, in order to study any crystallographic change during experiment. The extent of metal-leaching from the catalyst was determined using the inductively coupled plasma optical emission spectrometry (ICP-OES). The catalytic activity of nano-catalysts was studied in terms of total organic carbon (TOC), adsorbable organic halides (AOX) and chlorophenolics (CHPs) removal. Interestingly, mixed oxide catalysts exhibited higher activity than the corresponding single-metal oxides. The maximum removal efficiency was achieved with Ce40Ni60 catalyst. The results indicate that the CWAO process is efficient in removing the priority organic pollutants from wastewater, as it exhibited up to 59% TOC, 55% AOX, and 54 % CHPs removal.
Digital Object Identifier (DOI): doi.org/10.5281/zenodo.1124653Procedia APA BibTeX Chicago EndNote Harvard JSON MLA RIS XML ISO 690 PDF Downloads 796
 M. Hartmann, S. Kullmann, and H. Keller, “Wastewater treatment with heterogeneous Fenton-type catalysts based on porous materials,” J. Mater. Chem., vol. 20, pp. 9002-9017, 2010.
 P. Saranya, K. Ramani, and G. Sekaran, “Biocatalytic approach on the treatment of edible oil refinery wastewater,” RSC Adv., vol. 4, pp. 10680-10692, 2014.
 C. S. D. Rodrigues, L. M. Madeira, and Rui A. R. Boaventura, “Decontamination of an industrial cotton dyeing wastewater by chemical and biological processes,” Ind. Eng. Chem. Res., vol. 53, pp. 2412-2421, 2014.
 C. Wang, A. Yediler, D. Lienert, Z. Wang, and A. Kenttrup, “Toxicity evaluation of reactive dyestuffs auxiliaries and selected effluents in textile finishing industry to luminiscent bacteria Vibrio fischeri,” Chemosphere, vol. 46, pp. 339, 2002.
 C. Barrera-Díaz, I. Linares-Hernández, G. Roa-Morales, B. Bilyeu, and P. Balderas-Hernández, “Removal of Biorefractory Compounds in Industrial Wastewater by Chemical and Electrochemical Pretreatments,” Ind. Eng. Chem. Res., vol. 48, pp. 1253-1258, 2009.
 A. Kohler, S. Hellweg, B. I. Escher, and K. Hungerbuhler, “Organic Pollutant Removal versus Toxicity Reduction in Industrial Wastewater Treatment: The Example of Wastewater from Fluorescent Whitening Agent Production,” Environ. Sci. Technol., vol. 40, pp. 3395-3401, 2006.
 M. Ali, and T. R. Sreekrishnan, “Aquatic toxicity from pulp and paper mill effluents: a review,” Adv. Environ. Res., vol. 5, pp. 175-196, 2001.
 B. Karrasch, O. Parra, H. Cid, M. Mehrens, P. Pacheco, R. Urrutia, C. Valdovinos, and C. Zaror, “Effects of pulp and paper mill effluents on the microplankton and microbial self-purification capabilities of the Biobıo River,” Chile. Sci. Total Enviro., vol. 359, pp. 194-208, 2006.
 M. Vepsäläinen, H. Kivisaari, M. Pulliainen, A. Oikari, and M. Sillanpää, “Removal of toxic pollutants from pulp mill effluents by electrocoagulation”, Sep. Purif. Technol., vol. 81, pp. 141-150, 2011.
 E. C. Catalkaya, and F. Kargi, “Advanced oxidation treatment of pulp mill effluent for TOC and toxicity removals,” J. Environ. Manag., vol. 87, pp. 396-404, 2008.
 D. V. Savant, R. A. Rahman, and D. R. Ranadi, “Anaerobic digestion of absorbable organic halides (AOX) from pulp and paper industry wastewater,” Bio. Technol., vol. 30, pp. 30-40, 2005.
 EC Decision 2455/2001/EC of the European Parliament and of the Council of November 20, 2001, “Establishing the list of priority substances in the field of water policy and amending Directive” 2000/60/EC, Official Journal of the European Communities, L331/1-5 of 15-12-2001.
 G. Erisction, and A. Larsson, “DNA-A dots in perch (Perca fluviatillis) in coastal water pollution with bleaching pulp mill effluents,” Ecotoxicol. Environ. Saf., vol. 46, pp. 167-173, 2000.
 S. Ciputra, A. Antony, R. Phillips, D. Richardson, and G. Leslie, “Comparison of treatment options for removal of recalcitrant dissolved organic matter from paper mill effluent,” Chemosphere, vol. 81, pp. 86-91, 2010.
 R. S. Rana, P. Singh, V. Kandari, R. Singh, R. Dobhal, and S. Gupta, “A review on characterization and bioremediation of pharmaceutical industries wastewater: An Indian perspective,” Appl. Water Sci., DOI: 10.1007/s13201-014-0225-3, 2014.
 J. A. Melero, F. Martínez, J. A. Botas, R. Molina, and M. I. Pariente, “Heterogeneous catalytic wet peroxide oxidation systems for the treatment of an industrial pharmaceutical wastewater,” Water Res., vol. 43, pp. 4010-4018, 2009.
 J. F. Zhao, L. Chen, Y. C. Lu, and W. W. Tang, “Catalytic wet air oxidation for the treatment of emulsifying wastewater,” J. Environ. Sci., vol. 17, pp. 576-579, 2005.
 A. M. Hosseini, A. Tungler, Z. Schay, S. Szabó, J. Kristóf, É. Széles, and L. Szentmiklósi, “Comparison of precious metal oxide/titanium monolith catalysts in wet oxidation of wastewaters,” Appl. Catal. B Environ., vol. 127, pp. 99-104, 2012.
 S. Azabou, W. Najjar, M. Bouaziz, A. Ghorbel, and S. Sayadi, “A compact process for the treatment of olive mill wastewater by combining wet hydrogen peroxide catalytic oxidation and biological techniques,” J. Hazard. Mater., vol. 183, pp. 62-69, 2010.
 A. Trovatelli, “Catalytic properties of ceria and CeO2-containing materials,” Catal Rev - Sci Eng, vol. 38, pp. 439-520, 1996.
 N. M. Dobrynkin, M. V. Batygina, A. S. Noskov , P. G. Tsyrulnikov , D. A. Shlyapin, V.V. Schegolev , D.A. Astrova , and B.M. Laskin, Catalysts Ru-CeO2/Sibunit for catalytic wet air oxidation of aniline and phenol, Top. Catal., Vol. 33, pp 69-76, 2005.
 M. B. Reddy, and A. Khan, “Nanosized CeO2-SiO2, CeO2-TiO2, and CeO2-ZrO2 mixed oxides: influence of supporting oxide on thermal stability and oxygen storage properties of ceria,” Catal. Surv. Asia, vol. 9, pp. 155-171, 2005.
 G. Lafaye, J. Jr. Barbie, and D. Duprez, “Impact of cerium-based support oxides in catalytic wet air oxidation: Conflicting role of redox and acid-base properties,” Catal. Today, vol. 253, pp. 89-98, 2015.
 M. Kurian, and D.S. Nair, “Manganese zinc ferrite nanoparticles as efficient catalysts for wet peroxide oxidation of organic aqueous wastes,” J. Water Process Eng., DOI: 10.1016/j.jwpe.2014.10.011, 2014.
 Anushree, S. Kumar, and C. Sharma, “NiO-CeO2 nano-catalysts: Synthesis, characterization and application in catalytic wet air oxidation of wastewater,” Mater. Express, vol. 5, pp. 419-428, 2015.
 Anushree, S. Kumar, and C. Sharma, “Synthesis, characterization and catalytic wet air oxidation property of mesoporous Ce1-xFexO2 mixed oxides,” Mater. Chem. Phys., Vol. 155, pp. 223-231, 2015.
 C. Sharma, S. Mohanty, S. Kumar, and N.J. Rao, “Gas chromatographic determination of pollutants in the chlorination and caustic extraction stage effluents from bleaching processes of agricultural residues,” Inter. J of environ and analyt. chem., vol. 64, pp. 289-300, 1996.
 A. K. Choudhary, S. Kumar, C. Sharma, “Removal of chloro-organics and color from pulp and paper mill wastewater by polyaluminium chloride as coagulant,” Desalin. Water Treat., vol. 53, pp. 697-708, 2015.
 H. Sun, H. Liang, G. Zhou, and S. Wang, “Supported cobalt catalysts by one-pot aqueous combustion synthesis for catalytic phenol degradation,” J. Colloid Interface Sci., vol. 394, pp. 394-400, 2013.
 S. Yanga, M. Besson, and C. Descorme, “Catalytic wet air oxidation of succinic acid over Ru and Pt catalysts supported on CexZr1-xO2 mixed oxides,” Appl. Catal. B: Environ., vol. 165, pp. 1-9, 2015.
 Y. Liu, and D. Sun, “Development of Fe2O3-CeO2-TiO2/ϒ-Al2O3 as catalyst for catalytic wet air oxidation of methyl orange azo dye under room condition,” Appl. Catal. B: Environ., vol. 72, pp. 205-211, 2007.