JEP  Vol.4 No.4 , April 2013
Removal of Di-2-Ethyl Hexyl Phthalates by Membrane Bioreactor
Abstract: A lab scale membrane bioreactor system was built to investigate the removal of Di-2-Ethyl Hexyl Phthalates (DEHP) in wastewater under variation of three runs: two hydraulic retention time (HRT) 24 and 36 hours in addition to two biomass: concentrated and light sludge. Solid phase extraction (SPE) followed by high performance liquid chromatography coupled with tandem mass spectrometry (HPLC-MS/MS) was applied to quantitatively identify DEHP in wastewater samples. Membrane bioreactor was built and operated to investigate DEHP removal. Higher HRT removed DEHP more efficiently than lower HRT. The concentrated MLSS could achieve higher removal efficiency than the lighter MLSS at the same HRT value. The performance of MBR in removing DEHP, TOC and COD from wastewater with a maximum removal efficiency were 29%, 85%, and 98%, respectively. Mass balance of DEHP in the system indicated that a majority was removed by adsorption process rather than filtration or microbiological process.
Cite this paper: S. Sakiti, S. Boontanon and N. Boontanon, "Removal of Di-2-Ethyl Hexyl Phthalates by Membrane Bioreactor," Journal of Environmental Protection, Vol. 4 No. 4, 2013, pp. 380-384. doi: 10.4236/jep.2013.44045.

[1]   Agency for Toxic Substances and Disease Registry (ATSDR), “Toxicological Profile for Di-(2-Ethylhexyl) phthalate (DEHP),” US Department of Health and Human Services, Public Health Service, Atlanta, 2002.

[2]   H. Chan, C. Chan, P. Ang and P. Wong, “Integrated Biosorption and Photo Catalytic Oxidation Treatment of Di-(2-Ethylhexyl) Phthalate,” Journal of Applied Phycology, Vol. 19, No. 6, 2007, pp. 745-753. doi:10.1007/s10811-007-9218-z

[3]   C. Dargnat, M. Teil, M. Chevreuil and M. Blanchard, “Phthalate Removal throughout Wastewater Treatment Plant: Case Study of Marne Aval station (France),” Science of The Total Environment, Vol. 407, No. 4, 2009, pp. 1235-1244. doi:10.1016/j.scitotenv.2008.10.027

[4]   S. K. Marttinen, R. H. Kettunen, K. M. Sormunen and J. A. Rintala, “Removal of Bis (2-Ethylhexyl) Phthalate at a Sewage Treatment Plant,” Water Research, Vol. 37, No. 6, 2003, pp. 1385-1393. doi:10.1016/S0043-1354(02)00486-4

[5]   M. Khan and J. Jung, “Ozonation Catalyzed by Homogeneous and Heterogeneous Catalysts for Degradation of DEHP in Aqueous Phase,” Chemosphere, Vol. 72, No. 4, 2008, pp. 690-696. doi:10.1016/j.chemosphere.2008.02.037

[6]   C. Chen, “The Oxidation of Di-(2-Ethylhexyl) Phthalate (DEHP) in Aqueous Solution by UV/H2O2 Photolysis,” Water, Air, and Soil Pollution, Vol. 209, No. 1-4, 2009, pp. 411-417. doi:10.1007/s11270-009-0209-3

[7]   C. Chen, P. Wu and Y. Chung, “Coupled Biological and Photo-Fenton Pretreatment System for the Removal of Di-(2-Ethylhexyl) Phthalate (DEHP) from Water,” Bioresource Technology, Vol. 100, No. 19, 2009, pp. 4531-4534. doi:10.1016/j.biortech.2009.04.020

[8]   M. Bodzek, M. Dudziak and K. Luks-Betlej, “Application of Membrane Techniques to Water Purification. Removal of Phthalates,” Desalination, Vol. 162, 2004, pp. 121-128. doi:10.1016/S0011-9164(04)00035-9

[9]   J. Sanchez, J. Bonet, G. Velasco and S. Lacorte, “Determination and Occurrence of Phthalates, Alkylphenols, Bisphenol A, PBDEs, PCBs and PAHs in an Industrial Sewage Grid Discharging to a Municipal Wastewater Treatment Plant,” Science of The Total Environment, Vol. 407, No. 13, 2009, pp. 4157-4167. doi:10.1016/j.scitotenv.2009.03.016

[10]   R. Reif, S. Suarez, F. Omil and J. Lema, “Fate of Pharmaceuticals and Cosmetic Ingredients during the Operation of a MBR Treating Sewage,” Desalination, Vol. 221, No. 1-3, 2008, pp. 511-517. doi:10.1016/j.desal.2007.01.111

[11]   APHA, AWWA, and WEF, “Standard Methods for the Examination of Water and Wastewater (20th Edition),” American Public Health Association, American Water Works Association and Water Environment Federation, Washington DC,1998.

[12]   A. Llop, F. Borrull and E. Pocurull, “Comparison of the Removal of Phthalates and Other Organic Pollutants from Industrial Wastewaters in Membrane Bioreactor and Conventional Activated Sludge Treatment Plants,” Water Science and Technology, Vol. 60, No. 9, 2009, pp. 2425-2437. doi:10.2166/wst.2009.314

[13]   H. Wenzel, F. Larsen, J. Kaas, L. Hoibye and B. Jacobsen, “Weighing Environmental Advantages and Disadvantages of Advanced Wastewater Treatment of Micro-Pollutants Using Environmental Life Cycle Assessment,” Water Science and Technology, Vol. 57, No. 1, 2008, pp. 27-32. doi:10.2166/wst.2008.819

[14]   S. A. Sakiti, S. K. Boontanon and N. Boontanon, “Sorption of Di-2-Ethyl Hexyl Phthalate (DEHP) by Activated Sludge,” Proceeding of the 20th National Grad Research Conference, Mahidol University, Salaya, 2011, pp. 1-6