Wpływ charakteru zanieczyszczeń organicznych na efektywność ich utleniania w procesie Fentona

• Autorzy: Świderska-Dąbrowska R. , Piaskowski K.

Warianty tytułu

EN

Influence of the Character of the Organic Pollutants on Their Oxidation Efficiency in the Fenton Process

• Języki publikacji: PL

Abstrakty

EN

Industrial wastewater often contain large amounts of impurities hardly decomposable and toxic, which are difficult to remove in the purification process. Even at low concentrations, they are carcinogenic and mutagenic. Mainly they are: PAHs, PCBs, polychlorinated dibenzodioxins PCDDs and dibenzofurans PCDFs, and phthalates which more and more often are present at wastewater treatment plants. Due to the inefficiency, in most cases, of standard methods of wastewater treatment in biological, physical and chemical processes Advanced Oxidation Processes – AOPs are becoming an alternative. One of the most effective methods of advanced oxidation is Fenton process, in which highly reactive hydroxyl radicals are generated, which oxidize the majority of organic compounds into simpler, biodegradable substances. The paper presents the effectiveness of the oxidation of organic pollutants in the Fenton process. In the experiments following organic were used: an aqueous dispersion of polyvinyl acetate (Winacet) and aqueous emulsion of phthalate bis (2-ethylhexyl) (DEHP). Also description of the mechanism for their removal is given. The study showed high efficiency of the oxidation process and a significant effect of examined parameters on the efficiency of the process. Winacet from aqueous dispersion was removed as a result of the oxidation of polyvinyl alcohol which is stabilizing system: polyvinyl acetate – polyvinyl alcohol, and the destabilization of the particles of polyvinyl acetate was followed by their separation in the process of co-precipitation and sedimentation. Hydrophobic DEHP in an aqueous medium is hydrolyzing with creation of hydrophilic functional groups, which give the particles of the emulsion a negative surface charge and allow them to be effectively removed in the process of FeSO₄ coagulation and co-precipitation.

Słowa kluczowe

PL

charakter zanieczyszczeń; proces Fentona

EN

wastewater; degradation; pretreatment; phthalate; optimization; removal

• Wydawca: Politechnika Koszalińska
• Czasopismo: Rocznik Ochrona Środowiska
• Rocznik: 2013
• Tom: Tom 15, cz. 2
• Strony: 1126--1142
• Opis fizyczny: Bibliogr. 16 poz., rys.

Twórcy

autor

Świderska-Dąbrowska R.

• Politechnika Koszalińska

autor

Piaskowski K.

• Politechnika Koszalińska

Bibliografia

• 1. Barbusiński K.: Intensyfikacja procesu oczyszczania ścieków i stabilizacji osadów nadmiernych z wykorzystaniem odczynnika Fentona, Wyd. Politechniki Śląskiej, ZN 1603, Gliwice (2004).
• 2. Biń A.K.: Chemiczna degradacja zanieczyszczeń w ściekach przemysłowych. Rocznik Ochrona Środowiska, Tom 2, 383–405 (2000).
• 3. Chen C.Y., Wu P.S., Chung, Y.C.: Coupled biological and photo-Fenton pretreatment system for the removal of di-(2-ethylhexyl) phthalate (DEHP) from water. Bioresource Technology 100, 4531–4534 (2009).
• 4. Chen S., Sun D., Chung J.-S.: Treatment of pesticide wastewater by moving-bed biofilm reactor combined with Fenton-coagulation pretreatment. Journal of Hazardous Materials 144, 577–584 (2007).
• 5. Dębowski M., Zieliński M., Dudek M., Grala A.: Możliwość zastosowania odczynnika Fentona w procesach usuwania formaldehydu pochodzących z przemysłu drzewnego. Rocznik Ochrona Środowiska, Tom 14, 587–596 (2012).
• 6. Hermosilla D., Cortijo M., Huang C.P.: The role of iron on the degradation and mineralization of organic compounds using conventional Fenton and photo-Fenton processes. Chemical Engineering Journal 155, 637–646 (2009).
• 7. Hermosilla D., Merayo N., Ordóñez R., Blanco A.: Optimization of conventional Fenton and ultraviolet-assisted oxidation processes for the treatment of reverse osmosis retentate from a paper mill. Waste Management 32, 1236–1243 (2012).
• 8. Li R., Yang C., Chen Hong; Zeng G., Yu G., Guo J.: Removal of triazophos pesticide from wastewater with Fenton reagent. Journal of Hazardous Materials 167, 1028–1032 (2009).
• 9. Lodha B., Chaudhari S.: Optimization of Fenton-biological treatment scheme for the treatment of aqueous dye solutions. Journal of Hazardous Materials 148, 459–466 (2007).
• 10. Pham T.T.H., Tyagi R.D., Brar S.K., Surampalli R.Y.: Effect of ultrasonication and Fenton oxidation on biodegradation of bis(2-ethylhexyl) phthalate (DEHP) in wastewater sludge. Chemosphere 82, 923–928 (2011).
• 11. Piaskowski K., Świderska-Dąbrowska R.: Zastosowanie procesu Fentona i sekwencyjnych reaktorów porcjowych do oczyszczania ścieków z produkcji okien drewnianych. Rocznik Ochrona Środowiska, Tom 12, 503–524 (2010).
• 12. Prato-Garcia D., Buitrón G.: Degradation of azo dye mixtures through sequential hybrid systems: Evaluation of three advanced oxidation processes for the pre-treatment stage. Journal of Photochemistry & Photobiology, A: Chemistry 223, 103–110 (2011).
• 13. Roslev P., Vorkamp K., Aarup J., Frederiksen K., Per Halkjær Nielsen P.H.: Degradation of phthalate esters in an activated sludge wastewater treatment plant. Water Research 41, 969–976 (2007).
• 14. Świderska-Dąbrowska R., Piaskowski K., Schmidt R.: Zastosowanie osadów żelazowych do utleniania ftalanów w procesie Fentona, Przemysł Chemiczny Nr 87 Tom 5, 587–589 (2008).
• 15. Teixeira A.C.S.C., Guardani R., Braun A.M., Oliveros E., Nascimento C.A.O.: Degradation of an aminosilicone polymer in a water emulsion by the Fenton and the photochemically enhanced Fenton reactions. Chemical Engineering and Processing 44, 923–931 (2005).
• 16. Yang G-P., Zhao X-K., Sun X-J., Lu X.-L.: Oxidative degradation of diethyl phthalate by photochemically-enhanced Fenton reaction. Journal of Hazardous Materials B126, 112–118 (2005).