Biochar and Compost Amendments Enhance Copper Immobilisation and Support Plant Growth in Contaminated Soils

Sarah Jones, Richard Bardos, Petra Kidd, Michel Mench, Frans de Leij, Tony Hutchings, Andrew Cundy, Christopher Joyce, Gerhard Soja, Wolfgang Friesl-Hanl, Rolf Herzig, Pierre Menger

Research output: Contribution to journalArticlepeer-review


Contamination of soil with trace elements, such as Cu, is an important risk management issue. A pot experiment was conducted to determine the effects of three biochars and compost on plant growth and the immobilisation of Cu in a contaminated soil from a site formerly used for wood preservation. To assess Cu mobility, amended soils were analysed using leaching tests pre- and post-incubation, and post-growth. Amended and unamended soils were planted with sunflower, and the resulting plant material was assessed for yield and Cu concentration. All amendments significantly reduced leachable Cu compared to the unamended soil, however, the greatest reductions in leachable Cu were associated with the higher biochar application rate. The greatest improvements in plant yields were obtained with the higher application rate of biochar in combination with compost. The results suggest joint biochar and compost amendment reduces Cu mobility and can support biomass production on Cu-contaminated soils.
Original languageEnglish
Pages (from-to)101-112
Number of pages12
JournalJournal of Environmental Management
Publication statusPublished - 15 Apr 2016

Bibliographical note

© 2016 This manuscript version is made available under the CC-BY-NC-ND 4.0 license


  • Organic amendments
  • Sunflower
  • Leaching tests
  • Plant trials
  • Trace elements
  • In situ stabilisation


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