Acta Univ. Agric. Silvic. Mendelianae Brun. 2012, 60(5), 247-254 | DOI: 10.11118/actaun201260050247
Influence of heavy metals occurrence on respiratory activity of microorganisms in the compost
- 1 Ústav agrochemie, půdoznalství, mikrobiologie a výživy rostlin, Mendelova univerzita v Brně, Zemědělská 1, 613 00 Brno, Česká republika
- 2 Ústav zemědělské, potravinářské a environmentální techniky, Mendelova univerzita v Brně, Zemědělská 1, 613 00 Brno, Česká republika
This work deals with the influence of selected heavy metals, copper, nickel, cobalt, zinc and cadmium on respiratory activity of microorganisms during the composting process. We focused on comparing the respiratory activity of microorganisms in the compost after composting process in the presence of different concentrations of above mentioned metals and the measured results were confronted with the valid Czech standard for industrial composts. The results show that the high inhibitory effect at low concentrations, about 1 mg/dm3, has cobalt, for which the limit concentration is no set by Czech standard. Other heavy metals exhibit an inhibitory effect at concentrations higher than maximum allowable concentration, which is set in Czech standard for compost class I and II, with regard to their application to agricultural land.
Keywords: municipal green solid waste, compost, heavy metals, microbial respiration
Received: April 23, 2012; Prepublished online: July 24, 2013; Published: July 30, 2013 Show citation
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