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The Utilization of Douglas-Fir Bark for the Production of Oxalic Acid and High Density Carbon Pellets

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Abstract

The production of oxalic acid by the catalytic oxidation of Douglas-fir (Psedotsuga menfiesii (Mirb) Franco) bark and subsequent pyrolysis of the residue to produce high density carbon pellets is discussed. Kinetic rate data are presented for oxalic acid production from Douglasfir bark. A maximum yield of 38 wt% oxalic acid has been obtained in 8 h at 80°C with 62.5 vol% HNO3 and 0.5 mg V2O5/g of bark. Additional oxalic acid can be produced by the conversion of pyrolytic oils and tars (obtained during carbonization of the residue) to increase the total yield to 45 wt%. An economic analysis based on the current cost of oxalic acid indicates the viability of the proposed process.

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Authors and Affiliations

  1. Departments of Forest Products and Chemical Engineering, Oregon State University, 97331, Corvallis, OR

    Ali M. Aslam, Robert D. Sproull, Murray L. Laver & Christopher J. Biermann

Authors
  1. Ali M. Aslam
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  2. Robert D. Sproull
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  3. Murray L. Laver
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  4. Christopher J. Biermann
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Aslam, A.M., Sproull, R.D., Laver, M.L. et al. The Utilization of Douglas-Fir Bark for the Production of Oxalic Acid and High Density Carbon Pellets. Appl Biochem Biotechnol 20, 135–148 (1989). https://doi.org/10.1007/BF02936478

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  • DOI: https://doi.org/10.1007/BF02936478

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