Natural Organic Matter Removal by UV/ Chlorine Process: Modeling and Optimization

Abstract:

This study evaluated and optimized the UV/ chlorine process for natural organic matters (NOMs) removal using response surface methodology (RSM). The effects of both the primary and secondary interactions of the reaction variables, including initial chlorine concentration (X₁), UV radiation time (X₂) and pH value (X₃), were examined. A satisfactory prediction response model (R²=0.999) was obtained, indicating the reliability of the methodology. The optimum condition obtained by CCD were 4.5 mg·L^-1 initial chlorine concentration, 7 min UV radiation time and pH 6.7. Under the optical condition, the maximum TOC removal was 48% and TOC concentration was only 2.6 mg·L^-1. The UV/ chlorine process as a novel AOP has many advantages for drinking water treatment, in terms of less chemical consumption, shorter reaction time and simpler technology.

• Periodical: Advanced Materials Research (Volumes 807-809)
• Pages: 466-471
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.807-809.466
• Online since: September 2013
• Authors: Xin Ran Zhang, Wei Guang Li, Peng Fei Ren
• Keywords: Advanced Oxidation Process (AOP), Central Composite Design, Natural Organic Matters, Numeral Modeling, Ultraviolet Light

References

[1] Lin H C, Wang G S: Desalination. 270 (2011), pp.221-226.

[2] Hussain S, Leeuwen J V, Chow C: Chemical Engineering Journal. Vol. 225 (2013), P. 394-405.

[3] Shon H, Phuntsho S, Chaudhary D, et al: Drink. Water Eng. Sci. Vol. 6 (2013), P. 59-77.

[4] Katsoyiannis I A, Canonica S: Water Research, Vol. 45 (2011), pp.3811-3822.

[5] Khataee A: Environmental technology, Vol. 31 (2010), pp.73-86.

[6] Nowell L H, Hoigné J: Water Research, Vol. 26 (1992), pp.599-605.

[7] Hansen K, Zortea R, Piketty A: Science of the Total Environment, Vol. 443 (2013), pp.850-856.

[8] Kim H, Shim J, Lee S: Chemosphere, Vol. 46 (2002), pp.123-130.

[9] Wang D, Bolton J R, Hofmann R: Water Research, Vol. 46 (2012), pp.4677-4686.

[10] Sichel C, Garcia C, Andre K: Water Research, Vol. 45 (2011), pp.6371-6380.

[11] Watts M J, Rosenfeldt E J, Linden K G: Journal of water supply: research and technology. Vol. 56 (2007), pp.469-477.

[12] Jin J, El-Din M G, Bolton J R: Water Research, Vol. 45 (2011), pp.1890-1896.

[13] Kasiri M, Khataee A: Environmental technology, Vol. 33 (2012), pp.1417-1425.

[14] Zhang J, Fu D, Xu Y: Journal of Environmental Sciences, Vol. 22 (2010), pp.1281-1289.

[15] Yang Y, Li Y, Zhang Y: Separation and Purification Technology, Vol. 76 (2010), pp.72-78.

[16] Sahoo C, Gupta A: Journal of Hazardous Materials, Vol. 215–216 (2012), pp.302-310.

[17] Trinh T K, Kang L S: Chemical Engineering Research and Design, Vol. 89 (2011), pp.1126-1135.

[18] Sarathy S R, Mohseni M: Environmental Science & Technology, Vol. 41 (2007), pp.8315-8320.

[19] Watts M J, Linden K G: Water Research, Vol. 41 (2007), pp.2871-2878.

[20] Feng Y, Smith D W, Bolton J R: Journal of Environmental Engineering and Science, Vol. 6 (2007), pp.277-284.