Using organic waste to fight soil contamination by heavy metals
Using organic waste to fight soil contamination by heavy metals.
Scientists from Skoltech's Center for Computational and Data-Intensive Science and Engineering (CDISE) in Russia and the Czech University of Life Sciences in Prague have refined the in-situ remediation technology for soils contaminated with heavy metals. The researchers experimentally established the type and concentration of the agent which, when introduced into contaminated soil, significantly immobilizes heavy metals, induces the soil biome to repair itself and creates a healthier environment for the organisms living in the soil. The results of the study were published in the journal Chemosphere. Read further
- Wood ash is reliable to decrease the water- and weak acid-extractable Cu, Zn, and Pb soil content.
- Carbonaceous amendments decrease weak acid-extractable Cu, and Zn soil content.
- Wood ash depressed soil enzymes activity.
- Biochar addition may pose a risk to Eisenia foetida survival.
- Minor addition of humic substances creates favourable soil condition for enzymes and earthworms.
More information: Mariia Pukalchik et al. Biochar, wood ash and humic substances mitigating trace elements stress in contaminated sandy loam soil: Evidence from an integrative approach, Chemosphere (2018). DOI: 10.1016/j.chemosphere.2018.03.181