| http://www.w3.org/ns/prov#value | - Additional ammonia is recovered from the purge stream by permeation through the separation membrane, and thenon-permeating gas from the last permeator stage may be suitable for use as, e.g., fuel or can be vented to the atmosphere, especially after recovering energy provided by the high pressure of the purge stream.The purge stream may, if necessary, be subjected to heat exchange to provide suitab
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