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Optimization of Gas Scrubbing in the Calcination of Struvite
Author(s) -
Thumeyer Lucas,
Bertau Martin,
Fröhlich Peter
Publication year - 2021
Publication title -
chemie ingenieur technik
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.365
H-Index - 36
eISSN - 1522-2640
pISSN - 0009-286X
DOI - 10.1002/cite.202100113
Subject(s) - struvite , data scrubbing , scrubber , phosphoric acid , ammonia , calcination , carbon dioxide , chemistry , waste management , ammonium phosphate , inorganic chemistry , ammonium bicarbonate , magnesium , catalysis , organic chemistry , raw material , fertilizer , engineering
Abstract During the calcination of magnesium ammonium phosphate hexahydrate (struvite) in the process of recycling to obtain phosphoric acid, ammonia is released in addition to water and carbon dioxide. With a gas scrubber, e.g., in the form of a bubble column reactor, ammonia can be recovered as a usable valuable material. With water as an inexpensive and effective absorbent, almost complete absorption (92 %) of the ammonia from the exhaust air can be achieved.