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Studies on TiO(2)/ZnO photocatalysed degradation of lignin.
J Hazard Mater. 2008 May 01; 153(1-2):412-7.JH

Abstract

The photocatalytic degradation of lignin obtained from wheat straw kraft digestion has been investigated by using TiO(2) and ZnO semiconductors. ZnO has been found to be a better photocatalyst than TiO(2). The different variables studied, include catalyst dose, solution pH, oxidant concentration and initial concentration of the substrate. The degradation of lignin was favorable at pH 11. Optimum values of catalyst dose and oxidant concentration were found to be 1g/l and 12.2 x 10(-6) M, respectively. The degradation of the organic compound was also evaluated as COD removal and increase in the COD removal was observed with increase in degradation rate. An attempt has also been made to explore the applicability of ZnO in immobilized mode for the degradation of lignin under solar light for industrial scale application. Further the comparative evaluation of ZnO in slurry/immobilized mode has been carried out.

Authors+Show Affiliations

Department of Chemical Engineering & Technology, Panjab University, Chandigarh, India. sushilkk1@yahoo.co.inNo affiliation info availableNo affiliation info available

Pub Type(s)

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

Language

eng

PubMed ID

17936502

Citation

Kansal, S K., et al. "Studies On TiO(2)/ZnO Photocatalysed Degradation of Lignin." Journal of Hazardous Materials, vol. 153, no. 1-2, 2008, pp. 412-7.
Kansal SK, Singh M, Sud D. Studies on TiO(2)/ZnO photocatalysed degradation of lignin. J Hazard Mater. 2008;153(1-2):412-7.
Kansal, S. K., Singh, M., & Sud, D. (2008). Studies on TiO(2)/ZnO photocatalysed degradation of lignin. Journal of Hazardous Materials, 153(1-2), 412-7.
Kansal SK, Singh M, Sud D. Studies On TiO(2)/ZnO Photocatalysed Degradation of Lignin. J Hazard Mater. 2008 May 1;153(1-2):412-7. PubMed PMID: 17936502.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Studies on TiO(2)/ZnO photocatalysed degradation of lignin. AU - Kansal,S K, AU - Singh,M, AU - Sud,D, Y1 - 2007/09/04/ PY - 2007/05/01/received PY - 2007/08/24/revised PY - 2007/08/24/accepted PY - 2007/10/16/pubmed PY - 2008/7/3/medline PY - 2007/10/16/entrez SP - 412 EP - 7 JF - Journal of hazardous materials JO - J Hazard Mater VL - 153 IS - 1-2 N2 - The photocatalytic degradation of lignin obtained from wheat straw kraft digestion has been investigated by using TiO(2) and ZnO semiconductors. ZnO has been found to be a better photocatalyst than TiO(2). The different variables studied, include catalyst dose, solution pH, oxidant concentration and initial concentration of the substrate. The degradation of lignin was favorable at pH 11. Optimum values of catalyst dose and oxidant concentration were found to be 1g/l and 12.2 x 10(-6) M, respectively. The degradation of the organic compound was also evaluated as COD removal and increase in the COD removal was observed with increase in degradation rate. An attempt has also been made to explore the applicability of ZnO in immobilized mode for the degradation of lignin under solar light for industrial scale application. Further the comparative evaluation of ZnO in slurry/immobilized mode has been carried out. SN - 0304-3894 UR - https://www.unboundmedicine.com/medline/citation/17936502/Studies_on_TiO_2_/ZnO_photocatalysed_degradation_of_lignin_ L2 - https://linkinghub.elsevier.com/retrieve/pii/S0304-3894(07)01244-7 DB - PRIME DP - Unbound Medicine ER -