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 308245
Title Nitrification limitation in animal slurries at high temperatures
Author(s) Willers, H.C.; Derikx, P.J.L.; Have, P.J.W. ten; Vijn, T.K.
Source Bioresource Technology 64 (1998)1. - ISSN 0960-8524 - p. 47 - 54.
DOI https://doi.org/10.1016/S0960-8524(97)00151-X
Department(s) Institute of Agricultural and Environmental Engineering
Publication type Refereed Article in a scientific journal
Publication year 1998
Abstract Nitrification rates in two types of animal slurry were measured at temperatures between 20 and 60°C. The rates were assessed in rapid laboratory assays using samples from aeration tanks of large scale treatment plants for pig or veal-calf slurry. Maximum nitrification rates for the two slurries were observed around 35 and 40°C. For veal-calf slurry, the observed maximum rate was 1.5 mmol NH4 + per gram volatile suspended solids per hour. The maximum rate for digested pig slurry was 0.11 mmol g-1h-1). For digested pig slurry, a sharp drop in nitrification rate was observed at temperatures higher than 40°C. The rate in veal-calf slurry dropped at temperatures higher than 45°C. No nitrification was observed above 45°C in digested pig slurry and above 50°C in veal-calf slurry. | Nitrification rates in two types of animal slurry were measured at temperatures between 20 and 60 °C. The rates were assessed in rapid laboratory assays using samples from aeration tanks of large-scale treatment plants for pig or veal-calf slurry. Maximum nitrification rates for the two slurries were observed around 35 and 40 °C. For veal-calf slurry, the observed maximum rate was 1.5 mmol NH4 + per gram volatile suspended solids per hour. The maximum rate for digested pig slurry was 0.11 mmol g-1 h-1). For digested pig slurry, a sharp drop in nitrification rate was observed at temperatures higher than 40 °C. The rate in veal-calf slurry dropped at temperatures higher than 45 °C. No nitrification was observed above 45 °C in digested pig slurry and above 50 °C in veal-calf slurry.
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