Analysis of Heavy Metal Content in Soil Fertilised with Fresh and Granulated Digestate
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Instytut Technologiczno-Przyrodniczy w Falentach, Poznań Branch, 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
Corresponding author
Anna Bartkowiak   

Institute of Technology and Life Sciences, Poznań Branch, Biskupińska 67, 60-463, Poznań, Poland
Pol. J. Environ. Stud. 2020;29(5):3517-3524
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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