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cation
cation exchange
cation exchange Process in which cations in solution are exchanged with cations held on the exchange sites of mineral and organic matter, particularly on the surfaces of
colloids of
clay and
humus.
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Cation-[pi] Interactions Involving Aromatic Amino Acids1-4
Magazine article from: The Journal of Nutrition; 6/1/2007; ; 700+ words
; ...to a wide range of cations through a predominantly...fundamental nature of the cation-π interaction...the region to which cations bind and it is the origin of the cation-π interaction. Quite simply, cations, with their positive...
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Monitor cations in CPI wastewater for better performance: these data can help explain the 'unexplainable, including changes in sludge settleability, changes in solids losses from final clarifiers and changes in dewaterability of the waste sludge.(Feature Report: Part 1)(The chemical process industries)
Magazine article from: Chemical Engineering; 5/1/2007; ; 700+ words
; ...sludge. The divalent cation bridging theory...between divalent cations in the wastewater...Loss of divalent cation bridging has been...concentrations of monovalent cations, such as Na...cations by monovalent cations from the negatively...loss of divalent cation bridging ...
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Influence of cations on activated-sludge effluent quality
Magazine article from: Water Environment Research; 1/1/2001; ; 700+ words
; ...2001). KEYWORDS: cation, iron, activated sludge...biopolymers), and inorganic cations (Braus et al., 1992...The incorporation of cations during the floc formation...relative proportion of these cations can be enumerated in...monovalent-to-divalent cation equivalent ratio (M...
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The effect of cations on the settling and dewatering of activated sludges: Laboratory results
Magazine article from: Water Environment Research; 3/1/1997; ; 700+ words
; ...increasing monovalent cation concentrations...concentrations and ratios of cations in the feed. Some...monovalent to divalent cation ratio below 2 to...activated sludge, cations, dewatering, exocellular...determine the effect of cations on flocculation...operation and to define a ...
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The Effect of Wastewater Cations on Activated Sludge Characteristics: Effects of Aluminum and Iron in Floc
Magazine article from: Water Environment Research; 1/1/2006; ; 700+ words
; ...monovalent and divalent cations in activated sludge...biological floes using a cation exchange resin...that the divalent cation bridging, in which...role of divalent cations in floe structure...monovalent to divalent cations (MfD), on a charge...determine if the cation content is ...
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Anion and cation leaching through large undisturbed soil cores under different flow regimes. 1. Experimental results.
Magazine article from: Australian Journal of Soil Research; 7/1/1999; ; 700+ words
; ...whether they were cations or anions. Under...conditions, solution cation/anion interactions...between anions and cations during transport...been considered. Cation transport is influenced...conditions. The cations could be described using the CDE with a cation exchange equation...
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ACCUMULATION AND DEPLETION OF BASE CATIONS IN FORES FLOORS IN THE NORTHEASTERN UNITED STATES.
Magazine article from: Ecology; 12/1/1999; ; 700+ words
; ...growth should cause cation depletion, all gained base cations in the forest floor...rapid losses of base cations, though losses may...Key words: base-cation depletion; calcium...resampling; forest-floor cations; forest floor, recovery...
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Special Report. Water Treatment: Cation conductivity monitoring: A reality check
Magazine article from: Power; 5/1/2008; ; 700+ words
; ...is worth millions. One knock against cation conductivity monitoring--still the...Subscript; . Here are the pros and cons of cation conductivity monitoriting and some alternative...hours, off 8) had become used to the cation conductivity sample of the condensate...
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The effect of metal cation binding on the protein, lipid and retinal isomeric ratio in regenerated bacteriorhodopsin of purple membrane
Magazine article from: Photochemistry and Photobiology; 5/1/2001; ; 700+ words
; ...binding site of metal cations, which affects protein...literature regarding the metal cation binding sites. INTRODUCTION...native bR (8). Metal cations play an important role...the removal of these cations by cation exchange or acidification...
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Case Study I: Application of the Divalent Cation Bridging Theory to Improve Biofloc Properties and Industrial Activated Sludge System Performance-Direct Addition of Divalent Cations
Magazine article from: Water Environment Research; 7/1/2004; ; 700+ words
; ...dewatering, cation bridging, divalent cations. Introduction...The divalent cation bridging theory...between divalent cations and the exocellular...Loss of divalent cation bridging has been...concentrations of monovalent cations such as sodium...
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cation
Book article from: The Columbia Encyclopedia, Sixth Edition
cation , atom or group of atoms carrying a positive...are more protons than electrons in the cation. Cations can be formed from a metal by oxidation...include Na + , Mg ++ , and NH 4 + . The cations of the transition elements have characteristic...
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cation-exchange capacity
Book article from: A Dictionary of Ecology
cation-exchange capacity ( CEC ) The total amount of exchangeable cations that a particular material or soil can adsorb at a given pH. Exchangeable cations are held mainly on the surface of colloids of clay and humus, and are measured in milligram...
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cation exchange
Book article from: A Dictionary of Ecology
cation exchange A process in which cations in solution are exchanged with cations held on the exchange sites of mineral and organic matter, particularly on the surfaces of colloids of clay and humus.
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cation exchange capacity
Book article from: A Dictionary of Plant Sciences
cation exchange capacity (CEC) The total amount of exchangeable cations that a particular material or soil can adsorb at a given pH. Exchangeable cations are held mainly on the surface of colloids of clay and humus, and are measured in milligram...
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cation ordering
Book article from: A Dictionary of Ecology
cation ordering The phenomenon, the extent of which is temperature-dependent, in which a cation shows preference for the site it occupies because it provides greater chemical stability.
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