Heavy Metals Release in Soils - Chapter 10 potx

... extracted also increased with increas- ing carbonate concentrations. Arsenic-Bearing Phases in Mine Sites Some studies reported that, in As-contaminated soils, the primary As mineral assemblage ... 2001 by CRC Press LLC 226 HEAVY METALS RELEASE IN SOILS for the use of kinetic or time-dependent models in soils have been suggested (Skopp, 1986). First, many reactions in so...

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... soils contaminated from mining, smelting, and refining of metal ores. In this chapter, metal release and transport from soils contaminated from anthro- pogenic activities related to metal mining, ... quantify mineral components. To avoid the expense of the direct measuring instruments, indirect methods may be advanta- geous for gaining insight into potential minerals controlling solub...

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... 130 HEAVY METALS RELEASE IN SOILS kinetics study, 20 mg Ca-smectite was shaken with 10 ml of 0.005 M Ca(NO 3 ) 2 solution containing initially 5, 10, 25, and 100 mg Zn L –1 for 30 min, 2 h, ... experimental kinetics during 2880 min of sorp- tion of a protein on calcium-saturated Wyoming smectite. L1531Ch05Frame Page 118 Monday, May 7, 2001 2:33 PM © 2001 by CRC Press LLC 128 H...

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... May 7, 2001 2:36 PM © 2001 by CRC Press LLC 156 HEAVY METALS RELEASE IN SOILS on Fe-oxides compared with Mn-oxides. Metals incorporated into the structure of recrystallized oxides may reduce ... leave more metal in solution (especially for reactions with relatively slow kinetics), thereby decreasing K d . Experiments examining partitioning of metals in soils may fall in...

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... plants. In nonaccumulator plants, Se is found in the form of protein-bound selenome- thionine, whereas in accumulator plants it is found in a water-soluble and nonprotein form such as Se-methylselenocysteine. ... LLC 206 HEAVY METALS RELEASE IN SOILS Tan, J.A., W.Y. Wang, D.C. Wang, S.F. Hou. 1994. Adsorption, volatilization, and speciation of selenium in different types o...

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... pointed out that the HiB fraction mainly consisted of the N-containing group, including most amino acids, amino sugar, low-molecular-weight amines, and pyri- dine, while the HiA fraction contained ... DOM con- tained many diverse metal-chelating groups responsible for the decreasing metal sorption in soils. In most agricultural soils with pH ranging from 5 to 8, such as soils contain...

Ngày tải lên: 11/08/2014, 10:22

... additional mines: the Trzebionka mine in 2005, and the Olkusz mine in 2 010. The largest mine (Pomorzany mine) will be shut down in 2020. L1401-frame-C10 Page 115 Monday, April 10, 2000 9:59 ... 1990 (Table 10. 1), just after political changes which caused economic recession. Zinc production decreased more. Zinc and lead mining in Poland is declining. The Boleslaw mine shut down...

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... concentrations in the eluent were determined by placing 200 ml of the sample into a Bio-Tek multichannel (optical densitometer with fiber-optics technol- ogy; Bio-Tek Instruments, Inc., Winooski, VT) ... colloid-bound) by colloid-flushing suspensions continued throughout the leaching cycle in all soil monoliths. While the soluble Pb fraction in the eluents was maintained relatively stable...

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... unraveling the affinity of mineral surfaces for both inorganic and organic species. The main effects of proton adsorption-desorption on the adsorption of metals in general and heavy metals in particular ... Peech 27 carried out pioneering works in applying Gouy-Chapmann and Stern models to kaolinitic soils. Since then, many articles in which modeling is performed have appeared...

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... 1280 104 1 102 9 1178 1114 1160 1114 1148 1148 1228 1221 1160 1136 1293 1245 102 3 943 106 9 101 4 1104 106 6 106 7 1114 1150 1123 1145 108 6 1274 1153 102 7 991 106 5 101 4 103 9 103 0 107 2 107 5 107 5 103 9 ... 1274 1153 102 7 991 106 5 101 4 103 9 103 0 107 2 107 5 107 5 103 9 1158 1116 100 2 974 102 0 981 103 8 102 2 104 5 102 3 105 0 103 3 100 3 966 1...

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