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Photocatalytic degradation of lignin using Pt/TiO2 as the catalyst.
Chemosphere. 2008 Mar; 71(5):998-1004.C

Abstract

Photocatalytic degradation of lignin was studied with the use of catalysts TiO(2) and Pt/TiO(2). The influence of several experimental parameters, i.e. pH, catalyst dosage and illumination on lignin degradation was investigated. The results showed that application of UV irradiation alone has almost no effect on the reduction of dissolved organic carbon (DOC) and American Dye Manufacture Institute value (ADMI). However, the addition of TiO(2) and Pt/TiO(2) reduced the original DOC (251 mg l(-1)) by more than 40% within 30 min of treatment and the reaction can be simulated with pseudo-first order kinetics. Rapid degradation of lignin was observed in acidic solution using either TiO(2) or Pt/TiO(2) as the catalyst compared to high pH cases. The content of Pt in the Pt/TiO(2) catalyst is 1%. In addition, too much catalyst addition has not increased the DOC and ADMI reduction proportionally. The investigation also indicated that the photocatalytic degradation rates could be enhanced 1-6 times faster after doping TiO(2) with Pt in different pH cases. A modified Nernst type model was adopted to simulate the decoloring process using TiO(2) and Pt/TiO(2) based on the profiles of oxidation reduction potential during the photocatalytic reaction. The developed equation can be used to predict the color removal efficiency of lignin wastewater by the photocatalytic process.

Authors+Show Affiliations

Department of Environmental Engineering and Health, Yuanpei University of Science and Technology, Hsinchu 300, Taiwan, ROC.No affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info available

Pub Type(s)

Comparative Study
Journal Article
Research Support, Non-U.S. Gov't

Language

eng

PubMed ID

18093635

Citation

Ma, Ying-Shih, et al. "Photocatalytic Degradation of Lignin Using Pt/TiO2 as the Catalyst." Chemosphere, vol. 71, no. 5, 2008, pp. 998-1004.
Ma YS, Chang CN, Chiang YP, et al. Photocatalytic degradation of lignin using Pt/TiO2 as the catalyst. Chemosphere. 2008;71(5):998-1004.
Ma, Y. S., Chang, C. N., Chiang, Y. P., Sung, H. F., & Chao, A. C. (2008). Photocatalytic degradation of lignin using Pt/TiO2 as the catalyst. Chemosphere, 71(5), 998-1004.
Ma YS, et al. Photocatalytic Degradation of Lignin Using Pt/TiO2 as the Catalyst. Chemosphere. 2008;71(5):998-1004. PubMed PMID: 18093635.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Photocatalytic degradation of lignin using Pt/TiO2 as the catalyst. AU - Ma,Ying-Shih, AU - Chang,Cheng-Nan, AU - Chiang,Yen-Pei, AU - Sung,Hsiao-Fan, AU - Chao,Allen C, Y1 - 2008/02/21/ PY - 2007/06/06/received PY - 2007/10/29/revised PY - 2007/10/29/accepted PY - 2007/12/21/pubmed PY - 2008/7/18/medline PY - 2007/12/21/entrez SP - 998 EP - 1004 JF - Chemosphere JO - Chemosphere VL - 71 IS - 5 N2 - Photocatalytic degradation of lignin was studied with the use of catalysts TiO(2) and Pt/TiO(2). The influence of several experimental parameters, i.e. pH, catalyst dosage and illumination on lignin degradation was investigated. The results showed that application of UV irradiation alone has almost no effect on the reduction of dissolved organic carbon (DOC) and American Dye Manufacture Institute value (ADMI). However, the addition of TiO(2) and Pt/TiO(2) reduced the original DOC (251 mg l(-1)) by more than 40% within 30 min of treatment and the reaction can be simulated with pseudo-first order kinetics. Rapid degradation of lignin was observed in acidic solution using either TiO(2) or Pt/TiO(2) as the catalyst compared to high pH cases. The content of Pt in the Pt/TiO(2) catalyst is 1%. In addition, too much catalyst addition has not increased the DOC and ADMI reduction proportionally. The investigation also indicated that the photocatalytic degradation rates could be enhanced 1-6 times faster after doping TiO(2) with Pt in different pH cases. A modified Nernst type model was adopted to simulate the decoloring process using TiO(2) and Pt/TiO(2) based on the profiles of oxidation reduction potential during the photocatalytic reaction. The developed equation can be used to predict the color removal efficiency of lignin wastewater by the photocatalytic process. SN - 0045-6535 UR - https://www.unboundmedicine.com/medline/citation/18093635/Photocatalytic_degradation_of_lignin_using_Pt/TiO2_as_the_catalyst_ L2 - https://linkinghub.elsevier.com/retrieve/pii/S0045-6535(07)01362-8 DB - PRIME DP - Unbound Medicine ER -