Carbon content in soil particle size and consequence on cation exchange capacity of Alfisols

1999 ◽  
Vol 30 (17-18) ◽  
pp. 2521-2537 ◽  
Author(s):  
Hervé Guibert ◽  
Paul Fallavier ◽  
Jean‐José Roméro
Keyword(s):  
Particle Size ◽  
Cation Exchange ◽  
Carbon Content ◽  
Cation Exchange Capacity ◽  
Exchange Capacity ◽  
Soil Particle ◽  
Soil Particle Size

scholarly journals Volume‐related quantification of organic carbon content and cation exchange capacity of macropore surfaces in Bt horizons

2020 ◽  
Vol 19 (1) ◽  
Author(s):  
Martin Leue ◽  
Daniel Uteau ◽  
Stephan Peth ◽  
Steffen Beck‐Broichsitter ◽  
Horst H. Gerke
Keyword(s):  
Organic Carbon ◽  
Cation Exchange ◽  
Carbon Content ◽  
Cation Exchange Capacity ◽  
Exchange Capacity ◽  
Organic Carbon Content

scholarly journals Estimation of cation-exchange capacity in routine soil testing

1986 ◽  
Vol 58 (1) ◽  
pp. 1-7
Author(s):  
Raina Niskanen ◽  
Antti Jaakkola
Keyword(s):  
Organic Carbon ◽  
Cation Exchange ◽  
Carbon Content ◽  
Cation Exchange Capacity ◽  
Ammonium Acetate ◽  
Exchange Capacity ◽  
Regression Equation ◽  
Soil Testing ◽  
Organic Carbon Content ◽  
Exchangeable Ca

The efficiency of the soil testing method used in Finland for predicting the effective cation-exchange capacity was studied in a material of 430 topsoil samples. The effective cation-exchange capacity was estimated 1) by summation of exchangeable Ca, Mg and acidity displaced by unbuffered 1 M KCI and 2) by summation of exchangeable Ca, Mg, K and Na displaced by neutral 1 M ammonium acetate and exchangeable acidity. In soil testing, Ca, Mg and K were extracted by acid ammonium acetate and soil pH measured in water-suspension. The estimates of the effective CEC were highly correlated and dependent on the clay and organic carbon content and pH(CaCl2) of the soil, the coefficient of multiple determination being over 80 %. Exchangeable Ca was the dominating cation. The proportion of Ca of the effective CEC was about 80 %. Acid ammonium acetate-extractable Ca together with pH(H2O) explained over 80 % of the variation in the effective CEC. For the whole material consisting of mineral soils with great variations in texture, organic carbon content and properties under evaluation, the regression equation predicting the effective CEC (KCI method) was CEC (mval/kg) = 309—56.8pH(H2O) + 0.085Ca(mg/l). Only 16 % of the estimates of the effective CEC calculated with this regression equation deviated more than 15 % from the measured values.

INFLUENCE OF CLAY MINERALS ON MICROORGANISMS: III. EFFECT OF PARTICLE SIZE, CATION EXCHANGE CAPACITY, AND SURFACE AREA ON BACTERIA

1966 ◽  
Vol 12 (6) ◽  
pp. 1235-1246 ◽  
Author(s):  
G. Stotzky
Keyword(s):  
Particle Size ◽  
Cation Exchange ◽  
Surface Area ◽  
Clay Minerals ◽  
Cation Exchange Capacity ◽  
Physicochemical Characteristics ◽  
Exchange Capacity ◽  
Bacterial Respiration ◽  
Effect Of Particle Size ◽  
Stimulation Of

The stimulation of bacterial respiration by clay minerals was related to certain physicochemical characteristics of clays. Respiration increased with an increase in the cation exchange capacity and surface area of the particles. The importance of surface area, however, could not be unequivocally established, as some of the methods used to determine this characteristic on certain clay species were questionable. Particle size did not appear to be a critical characteristic. The implications of the cation exchange capacity of clay minerals in the activity, ecology, and population dynamics of microorganisms in nature are discussed.

scholarly journals Influence of Pine Bark Particle Size and pH on Cation Exchange Capacity

2014 ◽  
Vol 24 (5) ◽  
pp. 554-559 ◽  
Author(s):  
James E. Altland ◽  
James C. Locke ◽  
Charles R. Krause
Keyword(s):  
Particle Size ◽  
Cation Exchange ◽  
Cation Exchange Capacity ◽  
Fine Particles ◽  
Exchange Capacity ◽  
Pine Bark ◽  
Sphagnum Peat ◽  
Maximum Quantity ◽  
Particle Size Classes ◽  
Substrate Ph

Cation exchange capacity (CEC) describes the maximum quantity of cations a soil or substrate can hold while being exchangeable with the soil solution. Although CEC has been studied for peatmoss-based substrates, relatively little work has documented factors that affect CEC of pine bark substrates. The objective of this research was to determine the variability of CEC in different batches of pine bark and determine the influence of particle size, substrate pH, and peat amendment on pine bark CEC. Four batches of nursery-grade pine bark were collected from two nurseries, and a single source of sphagnum moss was obtained, separated in to several particle size classes, and measured for CEC. Pine bark was also amended with varying rates of elemental sulfur and dolomitic limestone to generate varying levels of substrate pH. The CEC varied with pine bark batch. Part of this variation is attributed to differences in particle size of the bark batches. Pine bark and peatmoss CEC increased with decreasing particle size, although the change in CEC from coarse to fine particles was greater with pine bark than peatmoss. Substrate pH from 4.02 to 6.37 had no effect on pine bark CEC. The pine bark batch with the highest CEC had similar CEC to sphagnum peat. Amending this batch of pine bark with sphagnum peat had no effect on composite CEC.

scholarly journals Effect оf delamination оn physico-chemical properties of kaolin

2021 ◽  
Vol 53 (2) ◽  
pp. 253-266
Author(s):  
Slavica Mihajlovic ◽  
Milica Vlahovic ◽  
Nenad Vusovic ◽  
Natasa Djordjevic ◽  
Marina Jovanovic
Keyword(s):  
Crystal Structure ◽  
Particle Size ◽  
Cation Exchange ◽  
Friction Force ◽  
Layered Structure ◽  
Cation Exchange Capacity ◽  
Chemical Properties ◽  
Exchange Capacity ◽  
Physico Chemical ◽  
Plastic Processing

To provide the quality required for its use, raw kaolin must be subjected to certain processing procedures like delamination which is applied to the layered structure materials. The aim of this research is to determine the possibility of performing delamination in the extruder and to estimate the effects of this process on the physico-chemical properties of kaolin. The results showed that delamination can be efficiently realized in the extruder by shearing densely packed layers under the influence of friction force and added Na2CO3 electrolyte. The crystal structure of the system was thus disrupted. This was confirmed by the Hinckley index (HI) decrease and by the dilatometric characteristics changes during heating. The particle size was reduced and, furthermore, new adsorption centers were formed, which led to an increase in the total cation exchange capacity (CEC). The plasticity of kaolin decreased with the increasing delamination degree, as well as the amount of water required for plastic processing, which is favorable in drying ceramic products.

scholarly journals The mechanochemical activation study of Tsagaan-tsav zeolite

2014 ◽  
Vol 12 ◽  
pp. 98-101 ◽  
Author(s):  
Ts Zolzaya ◽  
B Davaabal ◽  
Z Ochirbat ◽  
G Oyun-Erdene ◽  
A Minjigmaa ◽  
...  
Keyword(s):  
Particle Size ◽  
Cation Exchange ◽  
Cation Exchange Capacity ◽  
Mechanochemical Activation ◽  
Exchange Capacity ◽  
Structural Characterisation ◽  
Particle Size Analyzer ◽  
Vibration Mill

Characterisation of mechanochemically activated Tsagaan-tsav zeolite has been performed. Tsagaan-tsav zeolite has been activated with a vibration mill for 2, 3, 5, 10 and 20 minutes. Ball to powder ratios were varied 1:10, 1:20, 1:50 and 1:100. Efficiency of milling determined based on amorphisation rate and cation exchange capacity changes. The highest efficiency was obtained for zeolite milled with ball to powder ratio of 100. Structural characterisation was performed with XRD, SEM, BET and particle size analyzer. Mechanochemical activation improves cation exchange capacity of natural zeolite.DOI: http://dx.doi.org/10.5564/mjc.v12i0.181 Mongolian Journal of Chemistry Vol.12 2011: 98-101 

scholarly journals Habitat of Spathoglottis plicata Bl in Forest of Kampung Woniki East Biak District, Biak Numfor Papua

2010 ◽  
Vol 7 (1) ◽  
Author(s):  
Yuliany Senga ◽  
C. Y. Hans Arwam ◽  
Nurhaida I. Sinaga
Keyword(s):  
Light Intensity ◽  
Cation Exchange ◽  
Carbon Content ◽  
Water Content ◽  
Air Temperature ◽  
Soil Ph ◽  
Cation Exchange Capacity ◽  
Exchange Capacity ◽  
Font Size ◽  
Plant Site

<!--[if gte mso 9]><xml> <w:WordDocument> <w:View>Normal</w:View> <w:Zoom>0</w:Zoom> <w:PunctuationKerning /> <w:ValidateAgainstSchemas /> <w:SaveIfXMLInvalid>false</w:SaveIfXMLInvalid> <w:IgnoreMixedContent>false</w:IgnoreMixedContent> <w:AlwaysShowPlaceholderText>false</w:AlwaysShowPlaceholderText> <w:Compatibility> <w:BreakWrappedTables /> <w:SnapToGridInCell /> <w:WrapTextWithPunct /> <w:UseAsianBreakRules /> <w:DontGrowAutofit /> <w:UseFELayout /> </w:Compatibility> <w:BrowserLevel>MicrosoftInternetExplorer4</w:BrowserLevel> </w:WordDocument> </xml><![endif]--><!--[if gte mso 9]><xml> <w:LatentStyles DefLockedState="false" LatentStyleCount="156"> </w:LatentStyles> </xml><![endif]--><!--[if !mso]><object classid="clsid:38481807-CA0E-42D2-BF39-B33AF135CC4D" id=ieooui></object> <mce:style><! st1\:*{behavior:url(#ieooui) } --> <!--[endif]--> <span style="font-size: 10pt; font-family: &quot;Times New Roman&quot;;">The research was aimed to figure out the ecology aspects of terrestrial orcid </span><em><span style="font-size: 10pt; font-family: &quot;Times New Roman&quot;;">S. plicata </span></em><span style="font-size: 10pt; font-family: &quot;Times New Roman&quot;;">in natural forest around Kampung Wonoki, East Biak. The result showed that <em>S. plicata </em>Grow on latosol soil with is structure very from loamy clay to loamy, colour of soil red to dark brown. Soil water content between 42,9-56,2 %, soil pH 5,0-6,4, Cation Exchange Capacity (CEC) 6,20-20,30 meq/100 gram, Base Saturation 10,0-68,0 %. Carbon content 0,20-0,69 %, Nitrogen 0,02-0,09 %, Phospor 0,3-21,3 ppm, Potasium 0,00-1,17 meq/100 gram, Calsium 0,77-11,78 meq/100 gram, Magnesium 0,15-1,11 meq/100 gram, and Sodium 0,00-0,13 meg/100 gram. Air Temperature Around site of plant site 26,5-42,3 <sup>0</sup>C, Air Moisture 49,0-82,0 % and Light Intensity 119-1228 lux.</span>

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