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Purification of Gaseous Emissions by 14C Removal During Reprocessing of Spent Uranium-Plutonium Nuclear Fuel

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Atomic Energy Aims and scope

Methods for trapping the 14C in waste gases by means of a combined technology are examined. The wastes gases from pyrochemical production can be purified by removing 14C by passing the gases at rates to 5 m3/h through a 0.5 m high layer of Ba(OH)2·8H2O granules in a 0.14 m in diameter apparatus after dilution with atmospheric air. The purification of the waste gases from hydrometallurgical production by removal of 14C (50 m3/h) is best accomplished by passage through a 0.28 m in diameter packed tower with 2.7–4 m high packing irrigated by an alkali solution which is regenerated by means of calcium hydroxide. The waste gases from pyrochemical production can also be passed through a packed tower. In this case the 14C is fixed in insoluble calcium carbonate and is placed in a storage facility and subsequently buried. The proposed technologies make it possible to purify the waste gases formed during the reprocessing of spent uraniumplutonium nitride nuclear fuel in a reprocessing module used in an on-site nuclear fuel cycle by removing 14C to a level admissible for air in production enclosures.

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Authors and Affiliations

  1. Bochvar All-Russia Research Institute for Inorganic Materials (VNIINM), Moscow, Russia

    S. A. Yakunin, O. A. Ustinov, A. Yu. Shadrin & O. V. Shudegova

Authors
  1. S. A. Yakunin
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  2. O. A. Ustinov
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  3. A. Yu. Shadrin
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  4. O. V. Shudegova
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Translated from Atomnaya Énergiya, Vol. 120, No. 3, pp. 176–178, March, 2016.

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Yakunin, S.A., Ustinov, O.A., Shadrin, A.Y. et al. Purification of Gaseous Emissions by 14C Removal During Reprocessing of Spent Uranium-Plutonium Nuclear Fuel. At Energy 120, 229–232 (2016). https://doi.org/10.1007/s10512-016-0122-y

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  • DOI: https://doi.org/10.1007/s10512-016-0122-y

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