Nitrogen loss during solar drying of biosolids

S. A. O'Shaughnessy, I. Song, Janick F Artiola, C. Y. Choi

Research output: Contribution to journalArticle

7 Citations (Scopus)

Abstract

Solar drying has been used extensively to dewater biosolids for ease of transportation and to a lesser degree to reduce pathogens prior to land application. The nitrogen in biosolids makes them a relatively inexpensive but valuable source of fertilizer. In this study, nitrogen loss from tilled and untilled biosolids was investigated during the solar drying process. Samples of aerobically and anaerobically digested biosolids during three solar drying experiments were analyzed for their nitrate (NO3-) and ammonium (NH4+) ions concentrations. Nitrogen losses varied depending on the solar drying season and tillage. Although not directly measured, the majority of nitrogen loss occurred through ammonia volatilization; organic nitrogen content (organic N) remained relatively stable for each sample, nitrate concentrations for the majority of samples remained below detectable levels and the decline of ammonium-nitrogen (NH4+-N) generally followed the trend of moisture loss in the biosolids.

Original languageEnglish (US)
Pages (from-to)55-65
Number of pages11
JournalEnvironmental Technology
Volume29
Issue number1
DOIs
StatePublished - Jan 2008

Fingerprint

Biosolids
biosolid
Drying
Nitrogen
nitrogen
Ammonium Compounds
Nitrates
ammonium
nitrate
organic nitrogen
volatilization
Fertilizers
tillage
Pathogens
Vaporization
Ammonia
ammonia
pathogen
moisture
loss

Keywords

  • Ammonia volatilization
  • Drying beds
  • Mineralization
  • Nitrogen fertilizer

ASJC Scopus subject areas

  • Environmental Science(all)
  • Environmental Chemistry

Cite this

Nitrogen loss during solar drying of biosolids. / O'Shaughnessy, S. A.; Song, I.; Artiola, Janick F; Choi, C. Y.

In: Environmental Technology, Vol. 29, No. 1, 01.2008, p. 55-65.

Research output: Contribution to journalArticle

O'Shaughnessy, S. A. ; Song, I. ; Artiola, Janick F ; Choi, C. Y. / Nitrogen loss during solar drying of biosolids. In: Environmental Technology. 2008 ; Vol. 29, No. 1. pp. 55-65.
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