Staff Publications

Staff Publications

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    'Staff publications' is the digital repository of Wageningen University & Research

    'Staff publications' contains references to publications authored by Wageningen University staff from 1976 onward.

    Publications authored by the staff of the Research Institutes are available from 1995 onwards.

    Full text documents are added when available. The database is updated daily and currently holds about 240,000 items, of which 72,000 in open access.

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Record number 443374
Title Apparatus for the ammonium recovery from liquid animal manure
Author(s) Starmans, D.A.J.; Timmerman, M.
Source Applied Engineering in Agriculture 29 (2013)5. - ISSN 0883-8542 - p. 761 - 767.
Department(s) LR - Environment
Publication type Refereed Article in a scientific journal
Publication year 2013
Keyword(s) denitrification - nitrification - removal
Abstract Nitrogen present in animal manure can be a limiting factor when considering manure application rates onto arable land. EU-regulations triggered the development of a new ammonia exchange apparatus for the recovery of ammonia. The described apparatus has a liquid to liquid ammonia mass transfer coefficient of 0.0058 m/s. The results were fitted using a simple first order ammonia exchange model with constant time step that additionally predicted that 80% of the ammonia could be recycled from the liquid fraction of animal manure within a residence time of 10 h with addition of 0.2 M NaOH to the manure, yielding a liquid artificial fertilizer with a calculated achievable maximum concentration of about 18 % nitrogen.
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