Improvement of the quality of sewage sludge compost by adding natural clinoptilolite

M. A. Stylianou, V. J. Inglezakis, K. G. Moustakas, M. D. Loizidou

Research output: Contribution to journalArticle

31 Citations (Scopus)

Abstract

Zeolites are naturally occurring minerals characterized by high cation exchange and adsorption capacity and, thus, are used for metal uptake from sewage sludge subjected to composting process. In the present paper, changes in the physicochemical characteristics of sewage sludge samples after composting were recorded and analysed. The composting process was carried out for 120 days in pilot bioreactors, which were filled with 20% w/w clinoptilolite and sludge. The experimental results indicated differences in the metal content of the initial sludge and essential changes in pH, %Corg, % organic matter (OM), %N values and heavy metals content. Furthermore, the phytotoxicity tests that were performed showed that sludge samples affected seed germination and root elongation, but no phytotoxic effects were observed. According to the experimental results, it is concluded that the use of natural clinoptilolite leads to the improvement of the quality of the composted sewage sludge.

Original languageEnglish
Pages (from-to)240-249
Number of pages10
JournalDesalination
Volume224
Issue number1-3
DOIs
Publication statusPublished - Apr 15 2008
Externally publishedYes

Fingerprint

Composting
clinoptilolite
Sewage sludge
composting
compost
sludge
Metals
Zeolites
metal
phytotoxicity
Heavy Metals
Bioreactors
bioreactor
Biological materials
Heavy metals
Minerals
Seed
Cations
Elongation
ion exchange

Keywords

  • Clinoptilolite
  • Composting
  • Heavy metals
  • Sludge

ASJC Scopus subject areas

  • Filtration and Separation

Cite this

Improvement of the quality of sewage sludge compost by adding natural clinoptilolite. / Stylianou, M. A.; Inglezakis, V. J.; Moustakas, K. G.; Loizidou, M. D.

In: Desalination, Vol. 224, No. 1-3, 15.04.2008, p. 240-249.

Research output: Contribution to journalArticle

Stylianou, M. A. ; Inglezakis, V. J. ; Moustakas, K. G. ; Loizidou, M. D. / Improvement of the quality of sewage sludge compost by adding natural clinoptilolite. In: Desalination. 2008 ; Vol. 224, No. 1-3. pp. 240-249.
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