Use of organic wastes in agriculture

Abstract

As the number of biogas plants and wastewater treatment plants continues to grow, there is an urgent need to find sustainable usage of the organic wastes produced in these facilities Recycling of organic wastes within agriculture can reduce the need for mineral fertilizer and restore organic carbon deficiency in the soil. The results from a 16-year long field experiment, where agricultural lands have been amended using sewage sludge and biogas residue is presented in this paper. Plant nutrients, organic contaminants and metals have been analyzed in order to evaluate the impact of the wastes on soil and crop quality. The results show that only small differences in plant uptake of metals and organic pollutants appear after 16 years. In addition, biogas residues performed well as a fertilizers, although not as well as mineral fertilizers. (C) 2015 The Authors. Published by Elsevier Ltd. This is an open access article under the CC BY-NC-ND license.

Keywords

agricultural soil; biogas residue; heavy metals; organic pollutants; sewage sludge

Published in

Energy Procedia
2015, volume: 75, pages: 2472-2476
Publisher: Elsevier Science bv

Conference

7th International Conference on Applied Energy (ICAE)

SLU Authors

• Odlare, Monica

  • Mälardalen University

• Pell, Mikael

  • Department of Molecular Sciences, Swedish University of Agricultural Sciences
    

Global goals (SDG)

SDG12 Responsible consumption and production

UKÄ Subject classification

Microbiology

Publication identifier

• DOI: https://doi.org/10.1016/j.egypro.2015.07.225

Permanent link to this page (URI)

https://res.slu.se/id/publ/73380