搜索结果: 1-15 共查到“凹凸棒石 Reduction”相关记录29条 . 查询时间(0.264 秒)
Reduction of COD from Micro-Polluted Water through Adsorption of Activated Carbon-Attapulgite Composite Adsorbent
Activated Carbon (AC) Adsorbent Adsorption Attapulgite COD Micro-Polluted Water Reduction
2011/11/15
The aim of this study was the assessment of reduction of chemical oxygen demand (COD) from micro-polluted water using activated carbon-attapulgite composite adsorbent prepared using activated carbon a...
Reduction of CO2 emissions and associated abatement costs in the European lime industry
Reduction CO2 emissions associated abatement costs European lime industry
2012/3/28
Reduction of CO2 emissions and associated abatement costs in the European lime industry.
Japan signed the United Nations Framework Convention on Climate Change (UNFCCC) at the World Summit in Rio de Janeiro in 1992 and expressed its determination to promote efforts for reducing the releas...
Chromate Removal by Dithionite-Reduced Clays: Evidence from Direct X-Ray Adsorption Near Edge Spectroscopy (Xanes) of Chromate Reduction at Clay Surfaces
Illite IMt-2 Kaolinite KGa-2 Montmorillonite Reduction Smectite Sorption SWa-1 SWy-1 XANES
2011/12/6
Abstract: Chromium(VI) in the environment is of particular concern because it is toxic to both plants and animals, even at low concentrations. As a redox-sensitive element, the fate and toxicity of ch...
A Model for the Mechanism of Fe3+ to Fe2+ Reduction in Dioctahedral Smectites
CMS Source Clay SWa-1 Dioctahedral Smectite Iron Reduction Structural Formula
2011/12/5
Abstract: A model to compensate the 2:1 layer having excess negative charge owing to the reduction of Fe3+ to Fe2+ by sodium dithionite buffered with citrate-bicarbonate in nontronite, beidellite, and...
Reduction and Sorption of Chromium by Fe(II)-Bearing Phyllosilicates: Chemical Treatments and X-Ray Absorption Spectroscopy (XAS) Studies
Absorption Chromium EXAFS Phyllosilicates Reduction XANES
2011/12/6
Abstract: The reduction of hexavalent chromium species in aqueous solutions by interaction with Fe(II)-bearing solid surfaces was studied using a 0.96 × l0−3 M Cr(VI) solution and iron-rich clay...
Manganite reduction by Shewanella putrefaciens MR-4
Manganite reduction Shewanella putrefaciens MR-4
2012/4/1
Previous studies have documented dissimilatory growth of bacteria on solid Mn41 oxide,but Mn31 oxides have not been previously studied; here we have demonstrated for the first time the bacterial reduc...
Bacterial reduction of crystalline Fe3+ oxides in single phase suspensions and subsurface materials
Bacterial reduction crystalline Fe3+ oxides single phase suspensions subsurface materials
2012/4/1
Microbiologic reduction of synthetic and geologic Fe31 oxides associated with four Pleis-tocene-age, Atlantic coastal plain sediments was investigated using a dissimilatory Fe reducing bacterium ( She...
Reduction in piston-cylinder experiments: The detection of carbon infiltration into platinum capsules
Reduction piston-cylinder experiments carbon infiltration platinum capsules
2012/4/1
Problems associated with intermittent and variable degrees of sample blackening are often reported for studies involving the preparation of CO2-bearing silicate glasses in pis-ton-cylinder apparatus. ...
A new era in hydrofluoric acid solution calorimetry: Reduction of required sample size below 10 milligrams
era hydrofluoric acid solution calorimetry milligrams
2012/3/31
Significant advances have been made in hydrofluoric acid solution calorimetry at La-fayette College in the past 15 years. To determine the degree to which these developments enable the reduction of sa...
Conversion of Ferruginous Allophanes to Ferruginous Beidellites at 95 癈 Under Alkaline Conditions with Alternating Oxidation and Reduction
Allophane Beidellite Infrared Spectra Nontronite Vertisols X-ray Diffraction (XRD)
2011/12/22
Abstract: Ferruginous beidellites with Al:Fe atomic ratios up to 2.36 were obtained when solutions containing Al, Fe2+ and H4SiO4 were adjusted to pH 8.5 with Ca(OH)2 and incubated at 95 癈 in the pres...
Reduction of Nitrate By Fe2+ in Clay Minerals
Clayey till Exchangeable ferrous iron Illite Mossbauer Nitrate Oxidized Structural ferrous iron Unoxidized
2011/12/27
In the 12 km2 catchment area of Syv creek, Denmark, moderate to high concentrations of nitrate (NO3−) occurred in the upper part of the oxidized zone (oxic-I), but dropped within the lower subox...
Reduction of Structural Fe(III) in Smectite by a Pure Culture of Shewanella Putrefaciens Strain MR-1
Clay Fe(III) reduction Metal-reducing bacteria Sediments Smectite Soils
2011/12/27
Abstract: Shewanella putrefaciens is a species of metal-reducing bacteria with a versatile respiratory metabolism. This study reports that S. putrefaciens strain MR-1 rapidly reduces Fe(III) within sm...
Reduction and Reoxidation of Nontronite: Questions of Reversibility
Dehydroxylation Ferric Ferrous Hydroxylation Infrared spectroscopy Iron Mossbauer spectroscopy Nontronite Oxidation
2011/12/1
Abstract: Redox cycles are common in nature and likely have a profound effect on the behavior of soils and sediments. This study examined a key component of redox cycles in smectites, namely, the reox...
Reduction of Structural Iron in Ferruginous Smectite by Free Radicals
Clay Dithionite Electron spin resonance spectroscopy ESR Hydrazine Iron Reduction Smectite Sulfide Thiosulfate
2011/12/31
The oxidation state of structural iron greatly influences the physical-chemical properties of clay minerals, a phenomenon that may have significant implications for pollutant fate in the environment, ...