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2012 | 19 | 1 | 29-38
Article title

Wet Oxidation of Dairy Sewage

Content
Title variants
Languages of publication
EN
Abstracts
EN
Results of kinetic studies on the process of wet oxidation of dairy sewage are presented. Experiments were carried out in a stirred batch tank reactor at the oxygen partial pressure equal to 1 MPa and at temperature ranging from 473 to 523 K. Dairy sewage was subjected to oxidation at a natural pH close to 4. The efficiency of decomposition of organic compounds was estimated on the basis of TOC measurement. The highest TOC reduction rate reached 79.6%. A kinetic model of the process was proposed and its parameters were determined experimentally. Good agreement of the experimental and calculated results was obtained.
PL
W pracy przedstawiono wyniki badań kinetycznych procesu mokrego utleniania ścieków przemysłu mleczarskiego. Badania przeprowadzono w okresowym reaktorze zbiornikowym z mieszadłem, przy ciśnieniu cząstkowym tlenu PO2 = 1 MPa, w zakresie temperatury od 473 do 523 K. Utlenianiu poddawano ścieki mleczarskie o ich naturalnym odczynie zbliżonym do wartości 4. Oceny efektywności rozkładu związków organicznych dokonano na podstawie pomiaru wartości TOC. Najwyższy stopień redukcji TOC ukształtował się na poziomie 79,6%. Zaproponowano model kinetyczny procesu i na podstawie badań eksperymentalnych określono jego parametry. Uzyskano dobrą zgodność wyników doświadczalnych i obliczeniowych.
Publisher

Year
Volume
19
Issue
1
Pages
29-38
Physical description
Dates
published
1 - 1 - 2012
online
8 - 11 - 2011
Contributors
  • Faculty of Process and Environmental Engineering, Technical University of Lodz, ul. Wólczańska 213, 90-924 Łódź, Poland
  • Faculty of Process and Environmental Engineering, Technical University of Lodz, ul. Wólczańska 213, 90-924 Łódź, Poland
  • Faculty of Process and Environmental Engineering, Technical University of Lodz, ul. Wólczańska 213, 90-924 Łódź, Poland
References
  • Jandal JM. Comparative aspects of goat and sheep milk. Small Rumin Res. 1996;22:177-185. DOI: 10.1016/S0921-4488(96)00880-2.[Crossref]
  • Kolaczkowski ST, Plucinski P, Beltran FJ, Rivas FJ, McLurgh DB. Wet air oxidation: a review of process technologies and aspects in reactor design. Chem Eng J. 1999;73:143-160. DOI: 10.1016/S1385-8947(99)00022-4.[Crossref]
  • Bhargava SK, Tardio J, Prasad J, Föger K, Akolekar DB, Grocott ST. Wet oxidation and catalytic wet oxidation. Ind Eng Chem Res. 2006;45(4):1221-1258. DOI: 10.1021/ie051059n.[Crossref]
  • Khan Y, Anderson GK, Elliott DJ. Wet oxidation of activated sludge. Water Res. 1999;33(7):1681-1687. DOI: 10.1016/S0043-1354(98)00387-X.[Crossref]
  • Genc N, Yonsel S, Dagasan L, Onar AN. Wet oxidation: a pre-treatment procedure for sludge. Waste Manage. 2002;22(6):611-6. DOI: 10.1016/S0956-053X(02)00040-5.[Crossref]
  • Mucha J, Zarzycki R. Analysis of wet oxidation process after initial thermohydrolysis of excess sewage sludge. Water Res. 2008;42:3025-3032. DOI:10.1016/j.watres.2007.11.012.[Crossref]
  • Imbierowicz M, Chacuk A. The advanced kinetic model of the excess activated sludge wet oxidation. Polish J Chem Technol. 2006;8(2):16-19.
  • Suárez-Ojeda ME, Metcalfe IS, Font J, Carrera J. Calibration of a kinetic model for wet air oxidation (WAO) of substituted phenols: Influence of experimental data on model prediction and practical identifiability. Chem Eng J. 2009;150:328-336. DOI: 10.1016/j.cej.2009.01.006.[Crossref][WoS]
  • García-Molina V, Kallas J, Esplugas S. Wet oxidation of 4-chlorophenol: Kinetic study. Chem Eng J. 2007;126(1):59-65. DOI: 10.1016/j.cej.2006.05.022.[Crossref]
  • Li L, Chen P, Gloyna EF. Generalized kinetic model for wet oxidation of organic compounds. AIChE J. 1991;37(11):1687-1697. DOI: 10.1002/aic.690371112.[Crossref]
  • Chia YN, Latusek MP, Holles JH. Catalytic wet oxidation of lactose. Ind Eng Chem Res. 2008;47(12):4049-4055. DOI: 10.1021/ie701779u.[Crossref]
  • Murzina EV, Tokarev AV, Korda's K, Karhu H, Jyri-Pekka Mikkola, Murzin DY. D-lactose oxidation over gold catalysts. Catal Today. 2008;131:385-392. DOI: 10.1016/j.cattod.2007.10.080.[Crossref]
  • Patrick A, Abraham M. Evaluation of a monolith-supported Pt/Al2O3 catalyst for wet oxidation of carbohydrate-containing waste streams. Environ Sci Technol. 2000;34:3480-3488. DOI: 10.1021/es000887z.[Crossref]
  • Hendriks HEJ, Kuster BFM, Marin GB. The effect of bismuth on the selective oxidation of lactose on supported palladium catalysts. Carbohydr Res. 1990;204:121-129. DOI: 10.1016/0008-6215(90)84027-R.[Crossref]
  • Marquardt D. An algorithm for least-squares estimation of nonlinear parameters. SIAM J Appl Math. 1963;11:431-441. DOI: 10.2478/v10216-011-0004-0[Crossref]
Document Type
Publication order reference
Identifiers
YADDA identifier
bwmeta1.element.-psjd-doi-10_2478_v10216-011-0003-1
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