Insights into solid phase characteristics and release of heavy metals and arsenic from industrial sludge via combined chemical, mineralogical, and microanalysis

... illustrates the superimposition of ApeSOD with the cambialistic SOD from P shermanii The overall structures of these enzymes were similar; the rmsd of the 747 Ca atoms was ˚ 0.695 A ApeSOD eluted from the ... superoxide dismutases Biochim Biophys Acta 1804, 24 5–2 62 Crystal structure of SOD from A pernix K1 Sugio S, Hiraoka BY & Yamakura F (2000) Crys...

Ngày tải lên: 14/02/2014, 22:20

... interactions established in the active site is also of relevance The active site: structural and electrostatic basis of HtA function The reaction catalyzed by ribotoxins follows a mechanism of transphosphorylation, ... Pozo A & Gavilanes JG (2001) RNase U2 and alphasarcin: a study of relationships Meth Enzymol 341, 33 5–3 51 ´ Lacadena J, Alvarez-Garcı´ a...

Ngày tải lên: 18/02/2014, 08:20

... function and lesion biology By exploring the function of the CCM genes in animal models this gap is being CCM animal models bridged Animal models have demonstrated the central importance of endothelial ... increase in both the intracerebral hemorrhage phenotype of rap1b and the cardiac developmental phenotype of san The zebrafish experiments demonstr...

Ngày tải lên: 15/03/2014, 10:20

... 1,3 ,5- Triazine Derivatives 11 1.2.2 Synthesis of 1,3 ,5- Triazine Derivatives 14 1.2.2.1 Solution phase synthesis of 2,4,6-trisubtituted -1,3 ,5- triazine 14 1.2.2.2 Solid- Phase Synthesis of 1,3 ,5- Triazine ... 65 3.4 Synthesis of 1,3 ,5- triazine Analogs via Guanidium Azolides 80 3 .5 Synthesis of 1,3 ,5- traizine-2,4-diones 3-17 81 3 .5. 1 S...

Ngày tải lên: 14/09/2015, 08:25

... hydrolyse glycosides to release the (bioactive) aglycone in the small intestine The purpose of this study was to determine whether the human cytosolic b-glucosidase could function to deglycosylate ... from human liver Furthermore, we investigated the speci®city of the human CBG with respect to the glycone and aglycone moieties, and in particular characterized...

Ngày tải lên: 08/03/2014, 16:20

... Influences of phase transition and microstructure on dielectric properties of Bi0.5Na0.5Zr1-xTixO3 ceramics Panupong Jaiban1, Ampika Rachakom1, Sukanda Jiansirisomboon1,2, and Anucha ... that evaporation of Na and Bi might occur which often resulted in a formation of a second phase and compositional inhomogeneity Similarly, several investigations also found t...

Ngày tải lên: 20/06/2014, 23:20

... al.: Influences of phase transition and microstructure on dielectric properties of Bi0.5Na0.5Zr1-xTixO3 ceramics Nanoscale Research Letters 2012 7:45 Author details Department of Physics and Materials ... of 1, 10, and 100 kHz Jaiban et al Nanoscale Research Letters 2012, 7:45 http://www.nanoscalereslett.com/content/7/1/45 Page of phase transition, microst...

Ngày tải lên: 21/06/2014, 17:20

... covered by trees and spontaneous plants The land in the zone is made of alluvial deposits The top layer of the soil, down to a depth of from 0.6 to m, is composed of sand with silt and clay, with ... made of sand and silt Groundwater flows at a depth of about m The contaminated area, whose estimated extension and volume are 5000 m2 and 17,000 m3 respectively, is made up...

Ngày tải lên: 15/03/2014, 23:56

... Based upon the changes in different chemical pools of heavy metals in sludge due to metal spiking and incubation, it appeared that bio-oxidation of organic carbon and consequent acidification effected ... **, * and NS indicate significance at P = 0.01, 0.05 and non-significant difference between pairs, respectively 3.3 Effect of metal spiking and incubation o...

Ngày tải lên: 16/03/2014, 00:07

... simultaneous removal of Fe, Pb and Ni, whereas fly ash was effective in the removal of Cd and Cu It was found that the percentage removal of heavy metals was dependent on the dose of low cost adsorbent and ... Cd removal using rice husk increased from 26.04% to 67.917% i.e with the increase of the amount of absorbent concentration, while the Cd removal usin...

Ngày tải lên: 20/07/2014, 12:47

... composition [24 28 ] However, in many cases the generally higher binding energies of trace metals to mineral- rather than organic-colloid surfaces may render high-surface-charge mineral colloids ... (Table 2. 1) may have also enhanced their stability and transportability Settling rate experiments (Figure 2. 2) indicated a decline in the concentration of kaolinitic colloids remai...

Ngày tải lên: 11/08/2014, 10:22

... protons in the bulk The combination of equations 4. 2 and 4. 3 gives int K H e − Fψ / RT = ΓAH ΓA aH (4. 4) int In dilute solutions K H is independent of the electric potential, and is called the intrinsic ... unraveling the affinity of mineral surfaces for both inorganic and organic species The main effects of proton adsorption-desorption on the adsorption of metals i...

Ngày tải lên: 11/08/2014, 10:22

... 10 75 10 45 1 655 1634 156 4 1487 1449 1426 1281 1261 1187 1136 1086 1039 1023 1688 1647 16 05 158 1 154 0 1493 14 75 13 75 1362 1293 1274 1 158 1 050 159 2 157 1 155 3 1466 1448 14 25 1360 1293 1280 12 45 1 153 ... 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 Iarlori, S et al., Dehydroxylation and silanization of the surfaces of beta-cristobalite silica: An ab i...

Ngày tải lên: 11/08/2014, 10:22

... pH (Adams and Ghiorse, 19 87) Recent investigations of the molecular biology of Mn-oxidizing bacteria have implicated copper-containing enzymes in Mn(II) oxidation Multi-copper oxidase enzymes have ... Cosmochimica Acta, and Limnology and Oceanography REFERENCES Adams, L.F and Ghiorse, W.C., Characterization of extracellular Mn2+-oxidizing activity and isolation of an Mn2+...

Ngày tải lên: 11/08/2014, 10:22

... techniques, including XRD, XAFS, and micro-focused XAFS to demonstrate that upon weathering of Zn-mineral phases in soils, Zn was taken up by the formation of Zn-containing phyllosilicates and, to ... sources, µ-EXAFS has been used to speciate metals in soils and sediments.30,31,64,65 8. 2.4 ADVANTAGE OF COMBINING TECHNIQUES In this brief overview of the approaches to...

Ngày tải lên: 11/08/2014, 10:22