Removal of cyclic volatile methylsiloxanes in effluents from treated landfill leachate by electrochemical oxidation
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An electrochemical oxidation reactor was used for advanced treatment of cyclic volatile methylsiloxanes using stainless steel plates as anode and cathode electrode. Several key factors were studied to optimize the electrochemical oxidation process. During the electrochemical oxidation process, the removal efficiencies of D5 (decamethylcyclopentasiloxane) increased with the reaction time and applied current densities. At the optimal operating parameters including plate distance of 1.0 cm, electrode plate amounts of 4 pairs, current density of 20 mA/cm2 and reaction time of 30 min, the removal efficiencies of D4 (octamethylcyclotetrasiloxane), D5 (decamethylcyclopentasiloxane), and D6 (dodecamethylcyclohexasiloxane) can reach 100, 82.1, and 72.5 %, respectively.
KeywordsCyclic volatile methylsiloxanes (cVMSs) Landfill leachate Electrochemical oxidation Wastewater treatment plants (WWTPs)
- 18.APHA, AWWA, WEF (2012) Standard methods for the examination of water and wastewater, 22nd edn. American Public Health Association, Washington, D. C.Google Scholar
- 19.Zhang CH, Lin H, Chen J, Zhang WW (2013) Advanced treatment of biologically pretreated coking wastewater by a bipolar three-dimensional electrode reactor. Environ Technol 22:1877–1880Google Scholar
- 22.Shi Y, Wang QS, Yue L, He SZ (2009) Treatment of landfill leachate by three-dimensional-electrode electro-fenton process. J Tianjin Univ 42:248–252Google Scholar