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Competitive sorption of cadmium and zinc in contrasting soils

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Competitive sorption of cadmium and zinc in contrasting soils. / Ming, Hui; Naidu, Ravi; Sarkar, Binoy et al.
In: Geoderma, Vol. 268, 15.04.2016, p. 60-68.

Research output: Contribution to Journal/Magazine › Journal article › peer-review

Harvard

Ming, H, Naidu, R, Sarkar, B, Lamb, DT, Liu, Y, Megharaj, M & Sparks, D 2016, 'Competitive sorption of cadmium and zinc in contrasting soils', Geoderma, vol. 268, pp. 60-68. https://doi.org/10.1016/j.geoderma.2016.01.021

APA

Ming, H., Naidu, R., Sarkar, B., Lamb, D. T., Liu, Y., Megharaj, M., & Sparks, D. (2016). Competitive sorption of cadmium and zinc in contrasting soils. Geoderma, 268, 60-68. https://doi.org/10.1016/j.geoderma.2016.01.021

Vancouver

Ming H, Naidu R, Sarkar B, Lamb DT, Liu Y, Megharaj M et al. Competitive sorption of cadmium and zinc in contrasting soils. Geoderma. 2016 Apr 15;268:60-68. Epub 2016 Feb 5. doi: 10.1016/j.geoderma.2016.01.021

Author

Ming, Hui ; Naidu, Ravi ; Sarkar, Binoy et al. / Competitive sorption of cadmium and zinc in contrasting soils. In: Geoderma. 2016 ; Vol. 268. pp. 60-68.

Bibtex

@article{5fadb2b1e7894a929a7ef1dd9e2f5fe7,
title = "Competitive sorption of cadmium and zinc in contrasting soils",
abstract = "The sorption behavior of cadmium (Cd(II)) and zinc (Zn(II)) on two virgin soils with different pH levels was studied using single metal and competitive dual metal systems. In the single metal system, Zn exhibited a greater affinity for the alkaline soil, as indicated by the Langmuir constant (KL = 8.85 L/kg) compared with Cd (KL = 1.79 L/kg). However, much less sorption of both Zn (KL = 0.19 L/kg) and Cd (KL = 0.07 L/kg) was observed in the acidic soil. The competitive sorption data were modeled using two-metal Freundlich and Langmuir functions. The competition for metal sorption occurred in the alkaline soil only at a higher concentration of the competing metals, whereas the effect was significant even at lower concentrations in the acidic soil. The cumulative amount of both metals sorbed in the soil was similar to that of single metal systems in the studied concentration range, demonstrating that the number of sites available for sorption remained constant irrespective of the competition. This study indicated that Cd might be more mobile in a mixed-metal system than in a single-metal scenario and thus poses a serious ecotoxicological threat. This study is important for assessing the risks and developing management strategies for multiple heavy metal contaminated soils.",
keywords = "Cadmium, Zinc, Soil pH, Competitive sorption, Mixed-metal system, Ecotoxicological threat",
author = "Hui Ming and Ravi Naidu and Binoy Sarkar and Lamb, {Dane T.} and Yanju Liu and Mallavarapu Megharaj and Donald Sparks",
year = "2016",
month = apr,
day = "15",
doi = "10.1016/j.geoderma.2016.01.021",
language = "English",
volume = "268",
pages = "60--68",
journal = "Geoderma",
issn = "0016-7061",
publisher = "Elsevier Science B.V.",

}

RIS

TY - JOUR

T1 - Competitive sorption of cadmium and zinc in contrasting soils

AU - Ming, Hui

AU - Naidu, Ravi

AU - Sarkar, Binoy

AU - Lamb, Dane T.

AU - Liu, Yanju

AU - Megharaj, Mallavarapu

AU - Sparks, Donald

PY - 2016/4/15

Y1 - 2016/4/15

N2 - The sorption behavior of cadmium (Cd(II)) and zinc (Zn(II)) on two virgin soils with different pH levels was studied using single metal and competitive dual metal systems. In the single metal system, Zn exhibited a greater affinity for the alkaline soil, as indicated by the Langmuir constant (KL = 8.85 L/kg) compared with Cd (KL = 1.79 L/kg). However, much less sorption of both Zn (KL = 0.19 L/kg) and Cd (KL = 0.07 L/kg) was observed in the acidic soil. The competitive sorption data were modeled using two-metal Freundlich and Langmuir functions. The competition for metal sorption occurred in the alkaline soil only at a higher concentration of the competing metals, whereas the effect was significant even at lower concentrations in the acidic soil. The cumulative amount of both metals sorbed in the soil was similar to that of single metal systems in the studied concentration range, demonstrating that the number of sites available for sorption remained constant irrespective of the competition. This study indicated that Cd might be more mobile in a mixed-metal system than in a single-metal scenario and thus poses a serious ecotoxicological threat. This study is important for assessing the risks and developing management strategies for multiple heavy metal contaminated soils.

AB - The sorption behavior of cadmium (Cd(II)) and zinc (Zn(II)) on two virgin soils with different pH levels was studied using single metal and competitive dual metal systems. In the single metal system, Zn exhibited a greater affinity for the alkaline soil, as indicated by the Langmuir constant (KL = 8.85 L/kg) compared with Cd (KL = 1.79 L/kg). However, much less sorption of both Zn (KL = 0.19 L/kg) and Cd (KL = 0.07 L/kg) was observed in the acidic soil. The competitive sorption data were modeled using two-metal Freundlich and Langmuir functions. The competition for metal sorption occurred in the alkaline soil only at a higher concentration of the competing metals, whereas the effect was significant even at lower concentrations in the acidic soil. The cumulative amount of both metals sorbed in the soil was similar to that of single metal systems in the studied concentration range, demonstrating that the number of sites available for sorption remained constant irrespective of the competition. This study indicated that Cd might be more mobile in a mixed-metal system than in a single-metal scenario and thus poses a serious ecotoxicological threat. This study is important for assessing the risks and developing management strategies for multiple heavy metal contaminated soils.

KW - Cadmium

KW - Zinc

KW - Soil pH

KW - Competitive sorption

KW - Mixed-metal system

KW - Ecotoxicological threat

U2 - 10.1016/j.geoderma.2016.01.021

DO - 10.1016/j.geoderma.2016.01.021

M3 - Journal article

VL - 268

SP - 60

EP - 68

JO - Geoderma

JF - Geoderma

SN - 0016-7061

ER -