ENVIRONMENTAL RESTORATION of METALSCONTAMINATED SOILS - CHAPTER 5 potx

... Council of Repub- lic of China (Grants no. NSC8 5- 2 621-P-00 2-0 04 and NSC8 6-2 621-P-00 2-0 06). References Adriano, D.C., Trace Elements in the Terrestrial Environment , Springer-Verlag, ... Base Site Soils H 2 O KCl (g/kg) (g/kg) (cmol(+)/kg soil) (%) Chungfu A 5. 0 4.3 23 .5 113 481 406 12.4 3.82 31 B 5. 5 4 .5 15. 2 102 52 4 374 9.9 3.77 38 Tatan C 5....

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... 1000 — — — — 33.9 42.2 28.3 73.4 Ni 350 Ni 700 — — — — 81.2 89.6 54 .2 84.7 Pb 150 0 Pb 300 63.7 51 .7 68.6 65. 6 39.3 20.3 36.4 36 .5 Cd 20 Cd 40 52 .4 65. 3 85. 7 89 .5 38 .5 28.1 54 .9 55 .4 a Yield was not obtained ... 0.18 2 5. 1 0.46 0.23 0.14 0. 05 0.26 0.13 3 9.4 0.77 0.47 0. 25 0.09 1.28 0.42 5 7.4 1.48 0 .57 0.78 0.18 1.37 0.81 6 6.0 0.68 0.49 0.13 0.07 0 .55 0.30 7...

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... in soils. 4131/frame/C04 Page 77 Friday, July 21, 2000 4 :57 PM © 2001 by CRC Press LLC 82 Environmental Restoration of Metals–Contaminated Soils FIGURE 4.3 Soil-water partitioning of ... effects of metal nature and soil properties on sorption of metals. 4.3.1.1 Sorption of Cadmium Sorption of Cd(II) on 15 soils as a function of pH is shown in Figure 4.3a....

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... medium-hard microporous zeolite. Composition: clinoptilolite ≈ 50 %, mordenite 0-1 0%, altered volcanic glass 2 0-3 0%, montmorillonite 1 0-1 5% , quartz 0 -5 %, feldspar 0 -5 %, and limonite 1-2 %. ... 27.6 109.7 59 .5 11.0 43.9 3 25. 3 79 .5 48 .5 8.6 27.1 x 3 23.1 90.9 53 .7 9.0 30.2 5 21.1 66 .5 38.6 17.4 32.7 x 6 22.3 92.3 50 .0 8.2 28.9* Shoot 1 2.0...

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... 0.9 0 .5 42 4.0 5 0.8 Co 2.2 1.7 54 10 60 — Ni 9.1 8 .5 44 43 80 50 Cr 27.4 17.8 49 129 50 0 50 Cu 82.9 82.0 50 388 600 40 Pb 49 .5 28.0 57 232 50 0 50 Zn 293.6 234.4 56 1378 2000 150 Hg 0.6 0.4 51 2.6 ... 1496 ± 56 2098 (HNO 3 -extractable), 20–30 40 237 88 1331 ± 130 296 mg kg –1 30–40 41 293 44 150 ± 15 2 85 40 50 42 92 92 65 ± 2 53 50 – 75 40 86 52 47 ± 2 61 Cad...

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... HFO. E (%) zinc cadmium pHe 6. 65 6 .56 6 .59 12 .5 mg 25 mg 50 mg 70 60 50 40 30 20 10 0 E (%) zinc cadmium pHe 5. 94 5. 66 5. 74 12 .5 mg 25 mg 62 .5 mg 40 35 30 25 20 15 10 5 0 (a) (b) 4131/frame/C01 Page ... cadmium 100 90 80 70 60 50 40 30 20 10 0 6.03 3.8 5. 43 4.34 4. 85 5.94 3 .58 4 5. 25 Valenton EDF HMO HFO Clay O.M E (%) pHe zinc cadmium 100 90 80 7...

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... added (g) 0 01. 25 0. 25 0 0.1 25 –. 25 Residual Pb, % 13 56 73 12 32 57 Nonresidual Pb, % 87 44 27 88 68 42 Decrease in nonresidual Pb, % 50 69 23 52 Sum of all fractions 2,920 ± 58 2, 850 ± 44 2,660 ... facilities. OSWER directive No. 9 355 . 4-1 2. Of ce of Emergency and Remedial Response, Washington, D.C. EPA /54 0/F-94/043, PB9 4-9 63282, 1994, 17. 4131C03/frame Pag...

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... kg -1 3 3 Soil pH 3 57 9 7.00 6.00 5. 00 4.00 3.00 2.00 1.00 0.00 y = -0 .54 5x + 7.14 R = 0 .52 0** 2 Cu-KNO , mg kg -1 Mn-KNO , mg kg -1 3 Soil pH Soil pH 3 57 9 4 .50 4.00 3 .50 3.00 2 .50 2.00 1 .50 1.00 .50 0.00 y ... 10. 752 x R = 0.676*** 2 3 3 57 9 2 Zn-KNO , mg kg -1 3 Soil pH 3 5 7 9 5. 00 4 .50 4.00 3 .50 3.00 2 .50 2.00 1 .50 1.00 .50 0.00 y =...

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... Hydroclassification 137 7 .5. 4.4 Hydrocyclones 143 7 .5. 4 .5 Sample Results for Hydrocyclones Separation of Contaminated Soil 144 7 .5. 4.6 Mineral Table 1 45 7 .5. 5 Attrition Scrubbing 147 7 .5. 5.1 Sample Results ... Technologies: Annual Status Report 5th ed., EPA 54 2-R-9 3-0 03, No. 5, prepared for the Of ce of Solid Waste and Emergency Response, U.S. Environmental Protec-...

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... 75 to 95% of lead at concentrations of up to 150 0 mg/kg across test specimens at reported energy expenditure of 29 to 60 kWh/m 3 of soil. Acar et al. (1994) demonstrated 90 to 95% removal of ... 1 . 5- ton samples of clayey sandy soil contaminated with lead at concentrations in the range of 350 0 mg/kg. Electrode spacings of 90 and 180 cm were used. Figure 8 .5 shows lead...

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