Efficacy of woody biomass and biochar for alleviating heavy metal bioavailability in serpentine soil
Article
Bandara, Tharanga, Herath, Indika, Kumarathilaka, Prasanna, Hseu, Zeng-Yei, Ok, Yong Sik and Vithanage, Meththika. 2017. "Efficacy of woody biomass and biochar for alleviating heavy metal bioavailability in serpentine soil." Environmental Geochemistry and Health: official journal of the Society for Environmental Geochemistry and Health. 39 (2), pp. 391-401. https://doi.org/10.1007/s10653-016-9842-0
| Article Title | Efficacy of woody biomass and biochar for alleviating heavy metal bioavailability in serpentine soil |
|---|---|
| ERA Journal ID | 36373 |
| Article Category | Article |
| Authors | Bandara, Tharanga, Herath, Indika, Kumarathilaka, Prasanna, Hseu, Zeng-Yei, Ok, Yong Sik and Vithanage, Meththika |
| Journal Title | Environmental Geochemistry and Health: official journal of the Society for Environmental Geochemistry and Health |
| Journal Citation | 39 (2), pp. 391-401 |
| Number of Pages | 11 |
| Year | 2017 |
| Publisher | Springer |
| Place of Publication | Netherlands |
| ISSN | 0269-4042 |
| 1573-2983 | |
| Digital Object Identifier (DOI) | https://doi.org/10.1007/s10653-016-9842-0 |
| Web Address (URL) | https://link.springer.com/article/10.1007/s10653-016-9842-0 |
| Abstract | Crops grown in metal-rich serpentine soils are vulnerable to phytotoxicity. In this study, Gliricidia sepium (Jacq.) biomass and woody biochar were examined as amendments on heavy metal immobilization in a serpentine soil. Woody biochar was produced by slow pyrolysis of Gliricidia sepium (Jacq.) biomass at 300 and 500 °C. A pot experiment was conducted for 6 weeks with tomato (Lycopersicon esculentum L.) at biochar application rates of 0, 22, 55 and 110 t ha−1. The CaCl2 and sequential extractions were adopted to assess metal bioavailability and fractionation. Six weeks after germination, plants cultivated on the control could not survive, while all the plants were grown normally on the soils amended with biochars. The most effective treatment for metal immobilization was BC500-110 as indicated by the immobilization efficiencies for Ni, Mn and Cr that were 68, 92 and 42 %, respectively, compared to the control. Biochar produced at 500 °C and at high application rates immobilized heavy metals significantly. Improvements in plant growth in biochar-amended soil were related to decreasing in metal toxicity as a consequence of metal immobilization through strong sorption due to high surface area and functional groups. |
| Keywords | Black carbon; Ca/Mg ratio; Charcoal; Chemical stabilization; Soil amendment |
| Public Notes | Files associated with this item cannot be displayed due to copyright restrictions. |
| Byline Affiliations | National Institute of Fundamental Studies, Sri Lanka |
| National Central University, Taiwan | |
| Kangwon National University, Korea | |
| Library Services |
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