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Biochar Amendment for the Immobilization of Manganese and Cadmium in the Soils of Abandoned Coal Mining in Jambi, Indonesia

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High heavy metal contents in soil of abandoned coal mining pose a risk to the environment. Acidic conditions impose a potential mobilization and availability of toxic heavy metals to water body. The objective of this study was to reduce mobilization of manganese and cadmium in the soil by amending lignite base biochar. The immobilization was investigated in a fixed bed column experiment in which concentrations of the metals in aliquot after the column were compared. Demineralized water adjusted to pH 4.7 to mimic environmental condition was pumped up through the column and the aliquots were collected at empty head space at liquid to solid (L/S) ratios of 1, 2, 5, 8 and 10. The results show that biochar amendment improves fraction of Mn and Cd immobilization in the soil and reduces mobility and availability of the metals. Amendment of 10% biochar could immobilize Mn (30%) and Cd (1%), respectively.

Keywords: Abandoned Mine; Biochar; Heavy Metals; Immobilisation

Document Type: Research Article

Affiliations: Department of Chemistry, Faculty of Science and Technology, Universitas Jambi, Jambi-Ma. Bulian Street Km. 15 Mendalo Indah, Jambi 36361, Indonesia

Publication date: July 1, 2020

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  • Journal of Computational and Theoretical Nanoscience is an international peer-reviewed journal with a wide-ranging coverage, consolidates research activities in all aspects of computational and theoretical nanoscience into a single reference source. This journal offers scientists and engineers peer-reviewed research papers in all aspects of computational and theoretical nanoscience and nanotechnology in chemistry, physics, materials science, engineering and biology to publish original full papers and timely state-of-the-art reviews and short communications encompassing the fundamental and applied research.
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