The effectiveness of TNT yellow wastewater treatment by using Photo-Fenton process
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https://doi.org/10.54939/1859-1043.j.mst.88.2023.87-94Keywords:
TNT yellow wastewater; UV/Fenton.Abstract
The purpose of this study is to evaluate the effectiveness of TNT yellow wastewater treatment by using Photo-Fenton process. The optimization of photo-fenton process was also evaluated by different condition of H2O2 dosage, ferrous dosage, pH condition. Treatment efficiency was determined by comparing the reduction of COD index, TNT concentration and Color index in the wastewater. The results showed that, after 120 min of treatment, the concentration of COD in the wastewater decreased by 82,71%, TNT concentration by 97,70% and Color index by 92,6% while the optimal condition for treating 1 liter of TNT wastewater is by pH=3, UV light wavelenght λ=254 nm, 7,19x10 -3M Fe2+ and molar ratio of H2O2/Fe2+= 20. The research results are an important basis for selecting the technological process, choosing the optimal conditions to treat each organic substance and the mixture of organic substances present in TNT yellow wastewater.
References
[1]. Spanggord, R.J. and B.E. Suta, "Effluent analysis of wastewater generated in the manufacture of 2,4,6-trinitrotoluene. 2. Determination of a representative discharge of ether-extractable components". Environmental Science & Technology. 16(4): p. 233-236, (1982). DOI: https://doi.org/10.1021/es00098a013
[2]. Liou, M.J., M.C. Lu, and J.N. Chen, "Oxidation of TNT by photo-Fenton process". Chemosphere. 57(9): p. 1107-14, (2004). DOI: https://doi.org/10.1016/j.chemosphere.2004.07.053
[3]. Ribeiro, E.N., F.T. Da Silva, and T.C.B. De Paiva, "Ecotoxicological evaluation of wastewater from 2.4.6-TNT production". Journal of Environmental Science and Health, Part A. 47(2): p. 184-191, (2012). DOI: https://doi.org/10.1080/10934529.2012.640550
[4]. Vasilyeva, G.K., V.D. Kreslavski, and P.J. Shea, "Catalytic oxidation of TNT by activated carbon". Chemosphere. 47(3): p. 311-317, (2002). DOI: https://doi.org/10.1016/S0045-6535(01)00304-6
[5]. Saupe, A., H.J. Garvens, and L. Heinze, "Alkaline hydrolysis of TNT and TNT in soil followed by thermal treatment of the hydrolysates". Chemosphere. 36(8): p. 1725-1744, (1998). DOI: https://doi.org/10.1016/S0045-6535(97)10063-7
[6]. Agrawal, K. and P. Verma, "Chapter 11 - Microbial-mediated explosives removal and its impact on TNT, RDX, and HMX", in Development in Wastewater Treatment Research and Processes, S. Rodriguez-Couto and M.P. Shah, Editors, Elsevier. p. 225-241, (2022). DOI: https://doi.org/10.1016/B978-0-323-85839-7.00018-9
[7]. Ayoub, K., et al., "Application of advanced oxidation processes for TNT removal: A review". Journal of Hazardous Materials. 178(1): p. 10-28, (2010). DOI: https://doi.org/10.1016/j.jhazmat.2010.02.042
[8]. Huang, C.P., C. Dong, and Z. Tang, "Advanced chemical oxidation: Its present role and potential future in hazardous waste treatment". Waste Management. 13(5): p. 361-377, (1993). DOI: https://doi.org/10.1016/0956-053X(93)90070-D
[9]. Gogate, P.R. and A.B. Pandit, "A review of imperative technologies for wastewater treatment I: oxidation technologies at ambient conditions". Advances in Environmental Research. 8(3): p. 501-551, (2004). DOI: https://doi.org/10.1016/S1093-0191(03)00032-7
[10]. Yardin, G. and S. Chiron, "Photo-Fenton treatment of TNT contaminated soil extract solutions obtained by soil flushing with cyclodextrin". Chemosphere. 62(9): p. 1395-402, (2006). DOI: https://doi.org/10.1016/j.chemosphere.2005.05.019
[11]. Nguyễn, H., et al., "Treatment of TNT contained water using uv-fenton process". Journal of Military Science and Technology, (82): p. 98-104, (2022). DOI: https://doi.org/10.54939/1859-1043.j.mst.82.2022.98-104
