Partitioning of heavy metals on soil samples from column tests

Yong, Raymond N.; Yaacob, Wan Zuhairi Wan; Bentley, Stephen P.; Harris, C. Jake; Tan, B. K.

doi:10.1016/s0013-7952(00)00111-3

Cited by 41 publications

(18 citation statements)

References 7 publications

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“…Murray et al (1996) reported that materials that were plotted below the A-line were defined as unsuitable, as materials with greater hydraulic conductivity. Clays which were plotted above the A-line were considered suitable or marginal (Yong et al, 2001b). According to the clay material plasticity classification scheme, the soil sample of Mokpo is considered as "suitable" for use as a landfill liner.…”

Section: Clay Sample Propertiesmentioning

confidence: 99%

Temperature Effect on Migration of Zn and Cd Through Natural Clay

Young

Lee

2006

Environ Monit Assess

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To investigate the effect of temperature on effective diffusion coefficients and retardation factors for Zn and Cd, combined diffusion and sequential extraction analyses were conducted at 15 degrees C and 55 degrees C. The effective diffusion coefficients of the metals increased up to ten times according to the increased temperature. On the other hand, the effect of temperature on the retardation factor depended on the retention mechanisms of the metals. The distribution coefficient for Zn, which was mainly partitioned in the carbonate phase, increased up to two times with the increase in temperature. On the other hand, the distribution coefficient for Cd, which was mainly partitioned in the exchangeable phase, was hardly affected by the temperature change. Results of combined diffusion and sequential extraction analysis showed that the effect of temperature on the heavy metals' (Zn and Cd) migration through the compacted natural clay was influenced by the combined effects of the diffusion coefficient and the retardation factor. Additionally, we could also observe the change in retention mechanism for the metals with the change in pore water concentration.

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Section: Clay Sample Propertiesmentioning

confidence: 99%

Temperature Effect on Migration of Zn and Cd Through Natural Clay

Young

Lee

2006

Environ Monit Assess

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“…Penyelidikan berkaitan pelapik lempung telah dikaji oleh ramai penyelidik, antaranya ialah Chalermyanont et al (2009) ;Devulapalli & Reddy (1996) dan Xie et al (2009. Pelapik lempung bertindak melemahkan pengangkutan bahan pencemar dan menyelesaikan masalah penyusupan cecair sisa di tapak pelupusan (Yong et al 2001). Bahan geologi iaitu tanah baki telah dipilih sebagai pelapik lempung disebabkan kuantitinya yang banyak, mudah diperoleh dan harga yang murah (Rosli et al 2008).…”

Section: Pendahuluanunclassified

“…Tanah baki juga boleh dipadatkan kepada ketertelapan yang sangat rendah iaitu kurang daripada 1×10 -9 m/s dan bertindak sebagai perlindungan terakhir untuk air bawah tanah terhadap bahan pencemar (Zuhairi et al 2008a). Menurut Yong et al (2001), tanah yang mempunyai ketertelapan yang rendah dan penjerapan logam yang tinggi berpotensi untuk menjadi pelapik lempung yang efektif. Kini, penyelidikan tentang pergerakan logam berat dengan menggunakan alat emparan geoteknik semakin berkembang dan telah digunakan oleh ramai penyelidik seperti Alshaebi et al (2010), Antoniadis dan Mckinley (2000) dan Kumar (2006).…”

Section: Pendahuluanunclassified

Pergerakan Kadmium (Cd) Melalui Tanah Baki Granit Terpadat Menggunakan Kaedah Kolum Turasan Mini

Zarime¹,

Yaacob²

2016

JSM

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“…Copper does not appear to leach significantly from soil due to its high binding capacity. Yong et al (2001) reported significant copper retention in the top 2 cm of the soil columns leached with Cu solution of concentration as high as 509.2 mg/L and very acidic pH (1.45). However, levels of copper as high as 2.8 mg/L have been found in groundwater (Irwin et al 1997).…”

Section: Introductionmentioning

confidence: 98%