Influence of Gliricidia sepium Biochar on Attenuate Perchlorate-Induced Heavy Metal Release in Serpentine Soil
Joint Authors
Vithanage, Meththika
Kumarathilaka, Prasanna
Source
Issue
Vol. 2017, Issue 2017 (31 Dec. 2017), pp.1-8, 8 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2017-02-14
Country of Publication
Egypt
No. of Pages
8
Main Subjects
Abstract EN
Perchlorate (ClO4-) is a strong oxidizer, capable of accelerating heavy metal release into regolith/soil.
Here, we assessed interactions between ClO4- and serpentine soil to simulate and understand the fate of Ni and Mn and their immobilization with the presence of biochar (BC).
A soil incubation study (6 months) was performed using serpentine soil in combination with different ClO4- concentrations (0.25, 0.5, 0.75, and 1 wt.%) and three different amendment rates (1, 2.5, and 5 wt.%) of Gliricidia sepium BC.
Bioavailable fraction of Ni and Mn was analyzed using CaCl2 extraction method.
An increase of ClO4- concentrations enhanced bioavailability fraction of Ni and Mn.
However, BC amendments reduced the bioavailability of Ni and Mn.
In comparison, 5% BC amendment significantly immobilized the bioavailability of Ni (68–92%) and Mn (76–93%) compared to other BC amendment rates.
Electrostatic attractions and surface diffusion could be postulated for Ni and Mn immobilization by BC.
In addition, ClO4- may have adsorbed to BC via hydrogen bonding which may reduce the influence of ClO4- on Ni and Mn mobility.
Overall, it is obvious that BC could be utilized as an effective amendment to immobilize Ni and Mn in heavy metal and ClO4- contaminated soil.
American Psychological Association (APA)
Kumarathilaka, Prasanna& Vithanage, Meththika. 2017. Influence of Gliricidia sepium Biochar on Attenuate Perchlorate-Induced Heavy Metal Release in Serpentine Soil. Journal of Chemistry،Vol. 2017, no. 2017, pp.1-8.
https://search.emarefa.net/detail/BIM-1172135
Modern Language Association (MLA)
Kumarathilaka, Prasanna& Vithanage, Meththika. Influence of Gliricidia sepium Biochar on Attenuate Perchlorate-Induced Heavy Metal Release in Serpentine Soil. Journal of Chemistry No. 2017 (2017), pp.1-8.
https://search.emarefa.net/detail/BIM-1172135
American Medical Association (AMA)
Kumarathilaka, Prasanna& Vithanage, Meththika. Influence of Gliricidia sepium Biochar on Attenuate Perchlorate-Induced Heavy Metal Release in Serpentine Soil. Journal of Chemistry. 2017. Vol. 2017, no. 2017, pp.1-8.
https://search.emarefa.net/detail/BIM-1172135
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1172135