Resistivity change during transport of heavy metal in sand

Fukue, Masaharu; Inoue, T.; Fujimori, Yuichi; Tanabe, K.; Kita, Koji; Chida, Tadashi; Nishihara, Akira

doi:10.1016/j.enggeo.2005.09.044

Cited by 5 publications

(3 citation statements)

References 6 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Oh and Park (23) suggested that the analysis of real permittivity should be performed at frequencies above 100 kHz. In the present study AC-EK was done at 60 Hz which supports the observation made by Fukue et al, (13) who suggested that ions can not be attracted toward cathode and anode in the AC system even at 1 kHz. This basic study will be useful to conduct further investigations on the combined action of AC and DC in EK on nitrate removal technology.…”

Section: Evaluation Of Ac and DC In Ek System 2275 Ph Of Soil And Elesupporting

confidence: 90%

Evaluation of EK System by DC and AC on Removal of Nitrate Complex

Choi

Maruthamuthu

et al. 2009

Separation Science and Technology

View full text Add to dashboard Cite

DC (Direct current) is used in electrokinetic (EK) technology to extract hazardous materials from soils. Besides, AC (alternating current) electric field is also used to induce particle and fluid motion in electrokinetics. The influence of AC and DC on electrokinetic phenomena was studied for the removal of nitrate complex in soil environment. The experiments were performed by employing three systems -DC, AC, and AC overlapped DC. The removal of cations was higher at the anodic spot while applying DC. Involvement of AC on cation removal was very poor and nitrate removal was about 50%. AC and DC can be used for the removal of nitrate complex in agricultural soils.

show abstract

Section: Evaluation Of Ac and DC In Ek System 2275 Ph Of Soil And Elesupporting

confidence: 90%

Evaluation of EK System by DC and AC on Removal of Nitrate Complex

Choi

Maruthamuthu

et al. 2009

Separation Science and Technology

View full text Add to dashboard Cite

show abstract

“…Trace elements contained in waste stored long term, despite its reclamation, may be converted into soluble compounds, posing a potential threat to groundwater and soil (Fukue et al, 2006; Martin‐Crespo et al, 2011). Our ERT measurements enabled us to study the variability of electrical properties of the polluted soils, as well as the location of the contamination and its spatial diversity in both the vertical and the horizontal.…”

Section: Discussionmentioning

confidence: 99%

“…The trace element content was highly correlated with the numbers of fine particles (size < 0.02 mm), which determine the sorption capacity and also the mobility and availability of heavy metals to plants (Kabata‐Pendias & Pendias, 2010). Furthermore, they determine the amounts of ions in solution and the electrical charge density on the surface of the solid constituents of the soil, which significantly decreases the electrical resistivity (Anterrieu et al, 2010; Fukue et al, 2006). That is why the total concentration of trace elements in our study was highly correlated with the content of clay and silt (r = 0.91; OM = 0.72), which accumulate trace elements, and with CEC (= 0.65), which is related to the sorption and desorption of trace elements.…”

Section: Discussionmentioning

confidence: 99%

Detection of land degradation caused by historical Zn‐Pb mining using electrical resistivity tomography

et al. 2021

View full text Add to dashboard Cite

Soil contamination with trace elements in mining areas still remains an urgent research problem due to their negative environmental impact that needs to be assessed. Despite the wide application of the electrical resistivity tomography (ERT) method to different environmental problems, it continually remains methodologically challenging in soil contamination near waste dumps of post‐metal historical mining. The aims of our study were: (1) to validate ERT measurements for detecting soil contamination by trace elements in the vicinity of a waste dump containing post‐processing spoil from Zn‐Pb ore smelting, (2) to determine the extent of soil contamination, and (3) to analyze the mineralogical, physical, and chemical properties of the soils affected. ERT enabled us to study the variability of electrical properties of soils, to locate the area of contamination, and to evaluate its spatial diversity in both. The impact of soil pollution is reflected on ERT cross‐sections in the form of electrical resistivities that decrease with increasing depth and distance from the waste dump. The respective maximum contents of Zn, Pb and Cd in the soils were 28,903, 12,407, and 136 mg kg−1. The total concentration of trace elements in soils was the highest down to a depth of 0.25 m and decreased in the order: Zn > Pb > Cu > Cd > Tl > As > Cr > Ni. The electrical resistivities of the soil samples were negatively correlated with the silty and clayey fraction content (−0.78), specific electrical conductivity (−0.75), total trace element content (−0.67), organic matter content (−0.57), and gravimetric water content (−0.53). The results also indicate that the electrical properties of the topsoil depend directly on the type of mineral components. Hydrated iron sulphates, lead sulphates, water‐bound in aluminosilicates, Fe oxides/hydroxides, and hydrated Fe, Zn, and Pb sulphates present in the soil all decrease its electrical resistivity. Our results show the impact of the mineralogical, physical, and chemical properties of the soils on the measured electrical resistivity and that including this information in the interpretation of ERT results enables non‐invasive detailed determination of soil contamination by trace elements.

show abstract