ENVIRONMENTAL RESTORATION of METALSCONTAMINATED SOILS - CHAPTER 7 pot

... the University of Mississippi to separate several metals-contaminated soils on behalf of the U.S. Army Corps of Engineers (Williford et al., 19 97) . Figure 7. 18 shows the overhead efflu- ent of a sand-sized ... remediate 20,000 tons of contaminated soils using a 10-ton-per-hour (tph) soil washer was estimated at $136. 67 per ton when the sys- tem was online 90% of the time....

Ngày tải lên: 18/06/2014, 19:20

... 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 6.1 1.85 0 .71 0.15 0.08 0.43 0.24 8 8.5 a 0.53 0.63 0.15 0.68 0.32 9 8.8 0. 87 0.42 ... LLC Remediation of Metal- and Radionuclides-Contaminated Soils 47 2.2 .7 In Situ Redox Manipulation The manipulation of redox status offers a promising treatment alternative f...

Ngày tải lên: 18/06/2014, 19:20

... from Soils Yujun Yin, Suen-Zone Lee, Sun-Jae You, and Herbert E. Allen CONTENTS 4.1 Introduction 77 4.2 Experimental Approaches 78 4.3 Results and Discussion 79 4.3.1 Sorption of Metals to Soils ... aspects of metal retention and release processes in soils. 4131/frame/C04 Page 77 Friday, July 21, 2000 4: 57 PM © 2001 by CRC Press LLC 82 Environmental Restoration...

Ngày tải lên: 18/06/2014, 19:20

... 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, ... 4. 57 a 21.2 b MO ND 23.4 a 13.6 d 4. 57 a 14.4 d Lime ND 25.1 a 17. 8 c 4. 57 a 21.2 b Phosphate ND 26 .7 a 19.5 a 7. 90 a 22.8 a Compost ND 26 .7 a 17. 8 c 7. 90 a 21.2 b...

Ngày tải lên: 18/06/2014, 19:20

... LLC 262 Environmental Restoration of Metals–Contaminated Soils in 1991. The transition to a market economy is pressing a clean-up of the most critical con- taminated sites of the country. ... montmorillonite 1 0-1 5%, quartz 0-5 %, feldspar 0-5 %, and limonite 1-2 %. Characteristics: density ≈ 1.82 g/cm 3 , wet surface pH: 7, NH 4 + -ion exchange capacity...

Ngày tải lên: 18/06/2014, 19:20

... 0–20 7. 6 7. 6 7. 6 7. 6 ± 0.05 7. 6 20–30 7. 6 7. 6 7. 5 7. 6 ± 0.09 7. 5 30–40 7. 5 7. 7 8.2 7. 7 ± 0.02 7. 5 40–50 7. 6 7. 8 7. 6 7. 7 ± 0.03 7. 6 50 75 7. 7 7. 7 7. 7 7. 8 ± 0.04 7. 7 OM, % 0–20 3.8 2.8 3.6 3.6 3 .7 20–30 ... 17. 5 177 0 .7 4.0 1.9 12.5 Buchs 7. 3 2.1 17. 5 48.8 41.9 9.3 125 1.2 6.1 2.0 9.3 BW 7. 2 2.5 13.1 50.3 39.8 9.9 135 1.8 5.5 2.6 10.2 BW...

Ngày tải lên: 18/06/2014, 19:20

... imprint of CRC Press LLC No claim to original U.S. Government works International Standard Book Number 0-5 6 67 0-4 5 7- X Library of Congress Card Number 0 0-0 30 172 Printed in the United States of America ... States of America 1 2 3 4 5 6 7 8 9 0 Printed on acid-free paper Library of Congress Cataloging-in-Publication Data Environmental restoration of metals-co...

Ngày tải lên: 18/06/2014, 19:20

... PB, % 96 4 94 57 96 78 79 35 Decrease in nonresidual Pb, % 96 40 19 56 Sum of all fractions 76 8 ± 48 874 ± 62 4,920 ± 170 2,985 ± 310 10,600 ± 79 0 9,550 ± 74 0 8,330 ± 550 7, 800 ± 474 Total via ... 82 68 91 17 5 Decrease in nonresidual Pb, % 10 26 82 95 Sum of all fractions 41,100 ± 669 47, 700 ± 1050 37, 900 ± 73 0 662 ± 37 8 47 ± 72 73 6 ± 66 Total via single digestion...

Ngày tải lên: 18/06/2014, 19:20

... 29.84a 38.26a 7. 90a 0 .75 c 1.50a 6 .74 a 28.45a 37. 44a S3 4.30d 4.41a 1.47a 5.15a 25 .73 a 36 .75 a 6.20b 1 .79 b 1.44a 5 .74 a 26.91a 35.88a 7. 30c 1.09c 1.45a 6.16a 27. 56a 36.26a 7. 70a 0 .78 c 1.56a 7. 40a 29.21a ... 43.07a S4 4.20d 9.39a 4 .70 a 9.00a 16.04b 39.13a 6.40c 8.35a 3.42b 7. 97a 18.22a 37. 95a 7. 60b 8.84a 3.46b 8.07a 18.07a 38.45a 8.40a 8 .70 a 3.40b 7. 94a 17. 78a...

Ngày tải lên: 18/06/2014, 19:20

... Reactions 172 8.4 Enhancement Conditions 172 8.5 Recent Developments 173 8.6 Field Demonstrations 176 8 .7 Theoretical Modeling 177 8.8 Practical Considerations 178 8.8.1 Electrode Requirements 178 8.8.2 ... 8.4 Typical bench-scale setup. 4131/frame/C08 Page 173 Wednesday, August 9, 2000 3:06 PM © 2001 by CRC Press LLC 184 Environmental Restoration of Metals–Contaminated Soils...

Ngày tải lên: 18/06/2014, 19:20