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A Comparison of Conventional and Biodegradable Chelating Agent in Different Type of Surfactant Solutions for Soap Scum Removal

Authors: Prariyada Theptat, Sumaeth Chavadej, John F. Scamehorn


One of the most challenges for hard surface cleaning product is to get rid of soap scum, a filmy sticky layer in the bathroom. The deposits of soap scum can be removed by using a proper surfactant solution with chelating agent. Unfortunately, the conventional chelating agent, ethylenediamine tetraacetic acid (EDTA), has low biodegradability, which can be tolerance in water resources and harmful to aquatic animal and microorganism. In this study, two biodegradable chelating agents, ethylenediamine disuccinic acid (EDDS) and glutamic acid diacetic acid (GLDA) were introduced as a replacement of EDTA. The result shows that using GLDA with amphoteric surfactant gave the highest equilibrium solubility of soap scum.

Keywords: Biodegradable chelating agent, EDDS, GLDA, Soap scum.

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[1] Park, J.S., Song, J.H., Yeon, K.H. and Moon, S.H., (2007). Removal of hardness ions from tap water using electromembrane processes.Desalination. 202, 1-8.
[2] Soontravanich, S., Lopez, H.E., Scamehorn, J.F., Sabatini, D.A. and Scheuing, D.R., (2010). Dissolution study of salt of long chain fatty acids (soap scum) in surfactant solutions. Part I: Equilibrium dissolution. J Surfact Deterg. 13, 367-372.
[3] Luo, C.L., Shen, Z.G., Baker, A.J.M. and Li, X.D., (2006). A novel strategy using biodegradable EDDS for the chemically enhanced phytoextraction of soils contaminated with heavy metals. Plant Soil. 285,67-80.
[4] Hancock, R.E.W., (1984). Alternations in outer membrane permeability. Annu. Rev. Microbiol. 38, 237-264.
[5] Kolodyńska, D., (2011). Cu(II), Zn(II), Co(II) and Pb(II) removal in the presence of the complexing agent of anew generation. Desalination. 267, 175-183.
[6] Schowanek, D., Feijtel, T.C.J., Perkins, C.M., Hartman, F.A., Federle, T.W. and Larson, R.J., (1997). Biodegradation of (S,S), (R,R) and mixed stereo- isomers of ethylene diamine disuccinic acid (EDDS), a transition metal chelator. Chemosphere. 34, 2375-2391.
[7] Schneider, J., Potthoff, K.B., Baur, R., Oftring, A. and Greindl, T. (1999). Use of glycine-N,N-diacetic acid derivatives as biodegradable complexing agents for alkaline earth metal ions and heavy metal ions. US Patent. 6008176.
[8] Brochure, Dissolvine® GL Technical Brochure, Akzo Nobel 2010, 2010.
[9] Lambert, J.B., Shurvell, H.F., Lightner, D.A. and Crooks, R.G., Organic Structural Spectroscopy
[10] Kolodyńska, D., (2011). Chelating agents of a new generation as an alternative to conventional chelators for heavy metal ions removal from different waste waters. Expanding issues in desalination.