ORCID
- Rich Boden: 0000-0002-4496-152X
Abstract
The interface between the ions in groundwater affects the biogeochemical behaviour of metal, and metal bioremediate by bacteria. Therefore, this study was aimed to predict the influence of pH, calcium, phosphate and humic acid on cadmium availability in artificial groundwater (AGW). Speciation and the thermodynamic calculation (MINTEQ program) were used to predict this in AGW theoretically. In results, cadmium availability diminished with an increase in pH, increase of calcium concentration and the addition of phosphate and humic acid of AGW. According to MINTEQ program, cadmium binds to some cations leaving fewer free cadmium ions available in AGW such as CdHCO3+, Cd(SO4)22-, CdCl+, CdHPO4, HA1-Cd, FA1-Cd, FA2-Cd, and HA2-Cd. It is suggested though that pH in AGW is maintained at pH 4.00 for best availability of cadmium and bioremediate by bacteria.
DOI
10.1088/1742-6596/1879/2/022020
Publication Date
2021-05-31
Publication Title
Journal of Physics: Conference Series
Volume
1879
Issue
2
ISSN
1742-6588
Keywords
Availability, cadmium, calcium, groundwater, humic acid, pH, phosphate, speciation
Recommended Citation
Jebril, N., Boden, R., & Braungardt, C. (2021) 'The effect of pH, calcium, phosphate and humic acid on cadmium availability and speciation in artificial groundwater', Journal of Physics: Conference Series, 1879(2). Available at: https://doi.org/10.1088/1742-6596/1879/2/022020
