ORIGINAL RESEARCH
Analysis of Heavy Metal Content in Soil Fertilised
with Fresh and Granulated Digestate
| 1 | Instytut Technologiczno-Przyrodniczy w Falentach, Poznań Branch, Poznań, Poland |
CORRESPONDING AUTHOR
Anna Bartkowiak
Institute of Technology and Life Sciences, Poznań Branch, Biskupińska 67, 60-463, Poznań, Poland
Institute of Technology and Life Sciences, Poznań Branch, Biskupińska 67, 60-463, Poznań, Poland
Submission date: 2019-12-11
Final revision date: 2020-01-27
Acceptance date: 2020-01-30
Online publication date: 2020-06-01
Publication date: 2020-06-08
Pol. J. Environ. Stud. 2020;29(5):3517–3524
KEYWORDS
TOPICS
ABSTRACT
Our study analysed the content of selected heavy metals (Fe, Zn, Mn, Pb, Cd, Ni and Cu) in soils
fertilised with mineral fertilisers (NPK and CaNPK), and fresh and granulated digestate. The content
of the elements was compared with non-fertilised treatments (0 and control treatment). The maximum
permitted limits were found not to have been exceeded in any of the treatments. The study demonstrated
that the digestates under analysis were safe for use as fertilisers. The contents of Zn, Cu, and Mn after
fertilisation with fresh digestate were found to be statistically significantly lower than in the control
treatments. Following the application of the granulated materials, smaller quantities of Cu, Fe and Cd
were noted.
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