TY - JOUR
T1 - The effect of pH, calcium, phosphate and humic acid on cadmium availability and speciation in artificial groundwater
AU - Jebril, Nadia
AU - Boden, Rich
AU - Braungardt, Charlotte
N1 - Publisher Copyright:
© Published under licence by IOP Publishing Ltd.
PY - 2021/5/31
Y1 - 2021/5/31
N2 - 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.
AB - 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.
KW - Availability
KW - cadmium
KW - calcium
KW - groundwater
KW - humic acid
KW - pH
KW - phosphate
KW - speciation
UR - http://www.scopus.com/inward/record.url?scp=85107568427&partnerID=8YFLogxK
UR - https://pearl.plymouth.ac.uk/context/bms-research/article/2741/viewcontent/Jebril_2021_J._Phys._Conf._Ser._1879_022020.pdf
U2 - 10.1088/1742-6596/1879/2/022020
DO - 10.1088/1742-6596/1879/2/022020
M3 - Conference proceedings published in a journal
AN - SCOPUS:85107568427
SN - 1742-6588
VL - 1879
JO - Journal of Physics: Conference Series
JF - Journal of Physics: Conference Series
IS - 2
M1 - 022020
T2 - 2020 Ibn Al-Haitham International Conference for Pure and Applied Sciences, IHICPS 2020
Y2 - 20 December 2020 through 21 December 2020
ER -