Influences of pH and NaCl on Metanil Yellow Decolouration by Adsorption and Photocatalytic Decolouration

Lili Yang; Nan Xue; Wenjie Zhang; Hongbo He

doi:10.14233/ajchem.2015.16868

Issue

Vol. 27 No. 1 (2015): Vol 27 Issue 1

Issue Published : December 27, 2014

This work is licensed under a Creative Commons Attribution 4.0 International License.

Influences of pH and NaCl on Metanil Yellow Decolouration by Adsorption and Photocatalytic Decolouration

https://doi.org/10.14233/ajchem.2015.16868

Lili Yang

School of Environmental and Chemical Engineering, Shenyang Ligong University, Shenyang 110159, P.R. China

Nan Xue

School of Environmental and Chemical Engineering, Shenyang Ligong University, Shenyang 110159, P.R. China

Wenjie Zhang

School of Environmental and Chemical Engineering, Shenyang Ligong University, Shenyang 110159, P.R. China

Hongbo He

State Key Laboratory of Forest and Soil Ecology, Institute of Applied Ecology, Chinese Academy of Sciences, Shenyang 110164, P.R. China

Corresponding Author(s) : Wenjie Zhang

wjzhang@aliyun.com

Asian Journal of Chemistry, Vol. 27 No. 1 (2015): Vol 27 Issue 1
Article Published : December 29, 2014

Abstract

A combination of adsorption and photocatalytic decolouration was explored in decolouration of metanil yellow. The effects of pH and NaCl were studied for both processes. Adsorption of metanil yellow on the activated carbon decreases with increasing pH. Photocatalytic activity is also influenced by the variation of pH and the maximum photocatalytic decolouration efficiency appears at pH of 3. For the result of combination of adsorption and photocatalytic decolouration, a minimum decolouration rate is obtained at pH of 7. The decolouration rate increases obviously with decreasing pH of the solution. The addition of NaCl to the solution of metanil yellow can obviously enhance both adsorption efficiency of the dye on activated carbon and photocatalytic decolouration efficiency on TiO₂. The overall decolouration efficiency does not change much with the variation of NaCl concentration.

Keywords

Metanil yellow Adsorption Photocatalytic TiO2

Yang, L., Xue, N., Zhang, W., & He, H. (2014). Influences of pH and NaCl on Metanil Yellow Decolouration by Adsorption and Photocatalytic Decolouration. Asian Journal of Chemistry, 27(1), 210–212. https://doi.org/10.14233/ajchem.2015.16868

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References

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References

S.A. Dastgheib, T. Karanfil and W. Cheng, Carbon, 42, 547 (2004); doi:10.1016/j.carbon.2003.12.062.

W. Buchanan, F. Roddick and N. Porter, Water Res., 42, 3335 (2008); doi:10.1016/j.watres.2008.04.014.

S.W. Krasner, P. Westerhoff, B.Y. Chen, B.E. Rittmann and G. Amy, Environ. Sci. Technol., 43, 8320 (2009); doi:10.1021/es901611m.

C. Musikavong, S. Wattanachira, T.F. Marhaba and P. Pavasant, J. Hazard. Mater., 127, 48 (2005); doi:10.1016/j.jhazmat.2005.06.042.

E.M. Thurman, Organic Geochemistry of Natural Waters, In: Distributors for the U.S. and Canada, M. Nijhoff/Kluwer Academic, Dordrecht/Boston, Hingham, MA, USA (1985).

M.H.B. Hayes and C.E. Clapp, Soil Sci., 166, 723 (2001); doi:10.1097/00010694-200111000-00002.

J.A. Leenheer and J.P. Croue, Environ. Sci. Technol., 37, 18A (2003); doi:10.1021/es032333c.

M.R. Hoffmann, S.T. Martin, W. Choi and W. Bahnemann, Chem. Rev., 95, 69 (1995); doi:10.1021/cr00033a004.

A. Fujishima, T.N. Rao and D.A. Tryk, J. Photochem. Photobiol. Chem., 1, 1 (2000); doi:10.1016/S1389-5567(00)00002-2.

D.H. Quiñones, A. Rey, P.M. Álvarez, F.J. Beltrán and P.K. Plucinski, Appl. Catal. B, 144, 96 (2014); doi:10.1016/j.apcatb.2013.07.005.

B.F. Gao, P.S. Yap, T.M. Lim and T.T. Lim, Chem. Eng. J., 171, 1098 (2011); doi:10.1016/j.cej.2011.05.006.

H. Slimen, A. Houas and J.P. Nogier, J. Photochem. Photobiol. A, 221, 13 (2011); doi:10.1016/j.jphotochem.2011.04.013.

X.J. Wang, Y.F. Liu, Z.H. Hu, Y.J. Chen, W. Liu and G.H. Zhao, J. Hazard. Mater., 169, 1061 (2009); doi:10.1016/j.jhazmat.2009.04.058.

Issue

Vol. 27 No. 1 (2015): Vol 27 Issue 1

Influences of pH and NaCl on Metanil Yellow Decolouration by Adsorption and Photocatalytic Decolouration

Corresponding Author(s) : Wenjie Zhang

Abstract

Keywords

Full Article

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