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Wet oxidation of debarking water: changes in lignin content and biodegradability

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Abstract

The purpose of the research was to estimate optimal conditions for wet oxidation (WO) of debarking water from the paper industry. The WO experiments were performed at various temperatures, partial oxygen pressures and pHs. The experiments showed that lignin degradation and organics removal are affected remarkably by temperature and pH. At different WO conditions (pH 12, T 130–200°C), 78–97% of lignin reduction was detected. pH value of 12 caused faster removal of tannins/lignin content; pH value of five was more effective for removal of total organics, represented by chemical oxygen demand (COD) and total organic carbon. The highest biodegradability [biological oxygen demand (BOD)/COD] of 0.72 was obtained at a pH of ten and temperature of 200°C.

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References

  • Donlagic J, Levec J (1998) Comparison of catalyzed and noncatalyzed oxidation of azo dye and effect on biodegradability. Environ Sci Technol 32:1294–1302

    Article  CAS  Google Scholar 

  • Eaton AD, Clesceri LS, Greenberg AE (eds) (1995) Standard methods for the examination of water and wastewater, 8th edn. APHA, Washington, DC, Part 5000

  • Field JA, Leyendeckers MJH, Sierra-Alvarez R, Lettinga G, Habets LHA (1988) The methanogenic toxicity of bark tannins and the anaerobic biodegradability of water soluble bark matter. Water Sci Technol 20:219–240

    CAS  Google Scholar 

  • (1999) In: Sundholm J (ed) Mechanical pulping. Papermaking science and technology, Book 5 (Gullischen J, Paulapuro H, series editors). Fapet Oy, Helsinki, pp 375–393

  • Kindsigo M, Kallas J (2006) Degradation of lignins by wet oxidation: model water solutions. Proc Est Acad Sci Chem 55:132–144

    CAS  Google Scholar 

  • Korhonen S, Tuhkanen T (2000) Effect of ozone on resin acids in thermo-mechanical pulp and paper mill circulation water. Ozone Sci Eng 22:575–584

    Article  CAS  Google Scholar 

  • Kolaczkowski ST, Beltrán FJ, McLurgh DB, Rivas FJ (1997) Wet air oxidation of phenol: factors that may influence global kinetics. Trans IChemE 75:257–265

    Article  CAS  Google Scholar 

  • Kolaczkowski ST, Plucinski P, Beltrán FJ, Rivas FJ, McLurgh DB (1999) Wet air oxidation: a review of process technologies and aspects in reactor design. Chem Eng J 73:143–160

    Article  CAS  Google Scholar 

  • Laari A, Korhonen S, Tuhkanen T, Verenich S, Kallas J (1999) Ozonation and wet oxidation in the treatment of thermomechanical pulp (TMP) circulation waters. Water Sci Technol 40:51–58

    Article  CAS  Google Scholar 

  • Saunamäki A, Savolainen M (1999) Effluent-free drum debarking. Pulp Pap Can 100:27–30

    Google Scholar 

  • Verenich S, Roosalu K, Hautaniemi M, Laari A, Kallas J (2005) Kinetic modeling of the promoted and unpromoted wet oxidation of debarking evaporation concentrates. Chem Eng J 108:101–108

    Article  CAS  Google Scholar 

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Authors and Affiliations

  1. Department of Chemical Technology, Lappeenranta University of Technology, P.O. Box 20, Lappeenranta, Finland

    M. Kindsigo & J. Kallas

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  1. M. Kindsigo
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  2. J. Kallas
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Correspondence to M. Kindsigo.

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Kindsigo, M., Kallas, J. Wet oxidation of debarking water: changes in lignin content and biodegradability. Environ Chem Lett 7, 121–126 (2009). https://doi.org/10.1007/s10311-008-0144-3

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  • DOI: https://doi.org/10.1007/s10311-008-0144-3

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