Heterogeneous Photocatalytic Degradation of Triton X-100 in Aqueous TiO2 Suspensions
American Journal of Environmental Protection
Volume 3, Issue 1, February 2014, Pages: 28-35
Received: Jan. 23, 2014; Published: Feb. 20, 2014
Views 4069      Downloads 206
Yanlin Zhang, School of Chemistry and Environment, South China Normal University, Guangzhou, P.R.China
Yufang Wan, Library of South China Normal University, Guangzhou, P.R.China
Article Tools
Follow on us
The increasing utilization of surfactants generates a great amount of wastes. Surfactants and their more toxic degradation by-products in the environment affect the biota greatly. In particular, the low biodegradation of nonionic surfactants requires efficient oxidation treatments. In addition, the extracted contaminants by high concentrations of non-ionic surfactants in soil remediation may be completely treated using advanced oxidation process and thus the degradation of non-ionic surfactants needs to be checked in this case. The photocatalytic degradation of Triton X-100, a non-ionic surfactant, in aqueous titania suspensions was investigated as a function of catalyst dosage, pH, addition of hydrogen peroxide, potassium persulfate, and Tert-butyl alcohol. For the treatment of 20 mg/L Triton X-100 solutions, the optimum catalyst dosage and pH were determined to be 1 g/L and 6, respectively. The degradation efficiency of Triton X-100 by potassium persulfate was higher than that by hydrogen peroxide when the same mol of oxidants were used. Tert-butyl alcohol can strongly inhibit the photocatalytic oxidation reactions of Triton X-100. The degradation rates as a function of initial surfactant concentrations were interpreted by using a Langmuir-Hinshelwood model. With 0.2 g/L titania or even an additional 0.1 g/L hydrogen peroxide to completely degrade 1 mg/L phenanthrene in a 2 g/L Triton X-100 solution within 30 min, in this case the degradation efficiency of Triton X-100 was less than 5%. This proved that the strategy that surfactants were used as solubilizing agents for the removal of contaminants from soils followed by heterogeneous photocatalytic degradation was feasible.Within 120 min, 2 g/L of Triton X-100 can be degraded up to 67% by the addition of both 1 g/L titania and 1 g/L hydrogen peroxide. Under the right conditions, Triton X-100 can be completely degraded.
Triton X-100, Photocatalytic Degradation, Titania, Kinetics
To cite this article
Yanlin Zhang, Yufang Wan, Heterogeneous Photocatalytic Degradation of Triton X-100 in Aqueous TiO2 Suspensions, American Journal of Environmental Protection. Vol. 3, No. 1, 2014, pp. 28-35. doi: 10.11648/j.ajep.20140301.14
Y. Y. Eng, V.K. Sharma, A. K. Ray, Photocatalytic degradation of nonionic surfactant, Brij35 in aqueous TiO2 suspensions, Chemosphere 79 (2010) 205-209.
H.J. Chen, D.H. Tseng, S.L. Huang, Biodegradation of octylphenol polyethoxylate surfactant TritonX-100 by selected microorganisms, J. Bioresource Technol. 96 (2005) 1483-1491.
E. Liwarska-Bizukojc, K. Miksch, A. Malachowska-Jutsz, Z. Kalka, Acute toxicity and genotoxicity of five selected anionic and nonionic surfactants, Chemosphere 57(2004) 735-742.
M.T. Garcia, E. Campos, I. Ribosa, Biodegradability and ecotoxicity of amineoxide based surfactants, Chemosphere 69(2007)1574-1578.
S. Mozia, M. Tomaszewska, A. W. Morawski, Decomposition of nonionic surfactant in a labyrinth flow photoreactor with immobilized TiO2 bed, Applied Catalysis B: Environmental 59 (2005) 155-160.
J. Perkowski, A. Bluska, W.K. Jozwiak, Titania assisted photocatalytic decomposition of Triton X-100 detergent in aqueous solution, Environ. Prot. Eng. 31 (2005) 61-75.
O. Horvath, R. Huszank, Degradation of surfactants by hydroxyl radicals photogenerated from hydroxoiron(III) complexes, Photochem. Photobiol. Sci. 2(2003) 960-966.
J. Sanz, J.I. Lombrana, A.D. Luis, Ultraviolet-H2O2 oxidation of surfactants, Environ. Chem. Lett. 1(2003) 32-37.
Y.Y. Eng, V.K. Sharma, A.K. Ray, Ferrate(VI): green chemistry oxidant for degradation of cationic surfactant, Chemosphere 63(2006) 1785-1790.
J. Rivera-Utrilla, M. Sánchez-Polo, J.D. Méndez-Díaz, M.A. Ferro-García, M.I. Bautista-Toledo, Behavior of two different constituents of natural organic matter in the removal of sodium dodecylbenzenesulfonate by O3 and O3-based advanced oxidation processes, J. Colloid Interf. Sci. 325(2008) 432-439.
X.J. Wang, Y. Song, J.S. Mai, Combined Fenton oxidation and aerobic biological processes for treating a surfactant wastewater containing abundant sulfate, J. Hazard. Mater. 160 (2008)344-348.
S. Guha, P. R. Jaffe´, C. A. Peters, Solubilization of PAH mixtures by a nonionic surfactant, Environ. Sci. Technol. 32(1998) 930-935.
A. Jarandehei, M. Karimi, G.A.D. Vissche, Kinetic modeling of photocatalytic degradation reactions: effect of charge trapping, Appl. Catal. B-Environ. 84(2008) 65-74.
J. Nowotny, Titanium dioxide-based semiconductors for solar-driven environmentally friendly applications: impact of point defects on performance, Energy Environ. Sci. 1(2008) 565-572.
A.E. Cassano, O.M. Alfano, Reaction engineering of suspended solid heterogeneous photocatalytic reactors, Catal. Today 58(2000) 167-197.
N.Yoshikawa, T. Kimura,Y. Kawase, Oxidative degradation of nonionic surfactants with TiO2 photocatalyst in a bubble column reactor, Can. J. Chem. Eng. 81(2003)719-724.
M. Ohtaki, H. Sato, H. Fujii, K. Eguhi, Intramolecular selective decomposition of surfactant molecules on photocatalytic oxidative degradation over TiO2 photocatalyst, J. Mol. Catal. A-Chem. 155(2000) 121-129.
T.Garcia, B.Solsona, A.D.Cazorla, S.A.Linares, S.H.Taylor, Total oxidation of volatile organic compounds by vanadium promoted palladium-titania catalysts: comparison of aromatic and polyaromatic compounds, Appl. Catal. B: Environ. 62 (2006) 66-76.
D. Dong, P. Li, X. Li, Q.Zhao, Y. Zhang, C. Jia, P. Li, Investigation on the photocatalytic degradation of pyrene on soil surfaces using nanometer anatase TiO2 under UV irradiation, J. Hazard. Mater. 174 (2010) 859-863.
H.H. Huang, D.H. Tseng, L.C. Juang, Heterogeneous photocatalytic degradation of momochlorobenzene in water, J. Hazard. Mater. 156(2008)186-193.
R.Molinari, F.Pirillo, V.Loddo, L.Palmisano, Heterogeneous photocatalytic degradation of pharmaceuticals in water by using polycrystalline TiO2 and a nanofiltration membrane reactor, Catal. Today 118(2006)205-213.
S.Horikoshi, J.Zhao, H.Hidaka, Photodegradation of surfactants.XIX: photooxidation mechanism for nonionic dodecanoyl amide surfactants at TiO2/H2O interface, J. Jpn. Oil Chem. Soc. 48 (1999)767-774.
J. Saien, H. Delavari, A.R. Solyman, Sono-assisted photocatalytic degradation of styrene-acrylic acid copolymer in aqueous media with nano titania particles and kinetic studies, J. Hazard. Mater. 177 (2010) 1031-1038.
J.Zhao, K.Wu, H.Hidaka, N.Serpone, Photodegradation of dyes with poor solubility in an aqueous surfactant/TiO2 dispersion under visible light irradiation, J. Chem.Soc. Faraday Trans. 94 (1998) 673-676.
G. Pardo, R. Vargas, O. Nunez, Photocatalytic TiO2-assisted decomposition of TritonX-100: inhibition of p-nitrophenol degradation, J. Phys. Org. Chem. 21(2008) 1072-1078.
W. Chu, Photodechlorination mechamism of DDT in a UV/surfactant system, Environ. Sci. Technol. 33 (1999) 421-425.
Y. Zhang, J.W.C. Wong, P.Liu,M.Yuan, heterogeneous photocatalytic degradation of phenanthrene in surfactant solution containing TiO2 particles, J. Hazard. Mater. 191 (2011)136-143.
Science Publishing Group
1 Rockefeller Plaza,
10th and 11th Floors,
New York, NY 10020
Tel: (001)347-983-5186