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Tuesday, August 4, 2020 | History

2 edition of Phosphate and tripolyphosphate adsorption by clay minerals and estuarine sediments found in the catalog.

Phosphate and tripolyphosphate adsorption by clay minerals and estuarine sediments

Carol A. Lake

Phosphate and tripolyphosphate adsorption by clay minerals and estuarine sediments

by Carol A. Lake

  • 291 Want to read
  • 37 Currently reading

Published by Virginia Water Resources Research Center, Virginia Polytechnic Institute and State University in Blacksburg .
Written in English

    Places:
  • Virginia.
    • Subjects:
    • Clay minerals -- Virginia.,
    • Estuarine sediments -- Virginia.,
    • Phosphates -- Virginia.,
    • Estuaries -- Virginia.,
    • Adsorption.

    • Edition Notes

      Bibliography: p. 29-34.

      StatementCarol A. Lake, William G. MacIntyre.
      SeriesBulletin - Virginia Water Resources Research Center ;, 109, Bulletin (Virginia Water Resources Research Center) ;, 109.
      ContributionsMacIntyre, William G., joint author.
      Classifications
      LC ClassificationsTD201 .V57 no. 109, GC97.8.V8 .V57 no. 109
      The Physical Object
      Paginationv, 58 p. :
      Number of Pages58
      ID Numbers
      Open LibraryOL4696821M
      LC Control Number77624071

      Phosphate ions are readily adsorbed by Fe, Al, or Mn oxides in many sediments, although other adsorption sites associated with layer silicates, oxide—organic matter complexes, or Ca and Mg carbonates in calcareous soil materials, may also be present [6–8]. Low concentrations of phosphorus (P) are desired in surface waters to minimize production of organic materials which cause problems in water use. The low P concentrations characteristic of the soil solution suggest that soils represent an appreciable sink for P in wastewaters applied to land. The mechanisms responsible for maintaining low (usually less than mg P soil-solution P ?a=hilg.v48n01p

      View Andrew Rate’s profile on LinkedIn, the world's largest professional community. Andrew has 2 jobs listed on their profile. See the complete profile on LinkedIn and discover Andrew’s Adsorption controls mobilization of colloids and leaching of dissolved phosphorus. (). Adsorption of anions by soil. In: Soil Chemistry. (). Adsorption of dissolved organic and inorganic phosphorus in soils of a weathering chronosequence. (). Adsorption of phosphorus on sediments of the Balearic Island (Spain) related to their

      Treated wastewater discharged from more than onsite wastewater treatment systems (OWTS) near the Civic Center area of Malibu, California, 40 km west of downtown Los Angeles, composes 28% of the recharge to a km 2 alluvial aquifer. On the basis of δ 18 O and δD data, the fraction of wastewater in some samples was >70%. Ammonium and nitrate concentrations in water from 15 water-table A groundwater, sediment and soil chemistry and mineralogical study has been performed to investigate the sources and mobilization process of Arsenic (As) in shallow aquifers of Bangladesh. The groundwater from the shallow aquifers is characterized by high concentrations of Arsenic (– µg/L), iron (– mg/L), and phosphate, along with high electrical conductivity (EC).


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Phosphate and tripolyphosphate adsorption by clay minerals and estuarine sediments by Carol A. Lake Download PDF EPUB FB2

BibTeX @MISC{Lake77phosphateand, author = {Carol A. Lake and William G. Maclntyre}, title = {Phosphate and Tripolyphosphate Adsorption by Clay Minerals and Estuarine Sediments}, year = {}}?doi= Get this from a library. Phosphate and tripolyphosphate adsorption by clay minerals and estuarine sediments.

[Carol A Lake; William G MacIntyre] Adsorption of phosphate (PO4-P) by sediments of nine sites taken from the Yangtze Estuarine and coastal tidal flats were studied in a laboratory. The mass fraction of clay and silt (   Orgariic matter on clay minerals and marine sediments effect on adsorption of dissolved copper, phosphate, and lipids from saline solutions.

Chem. Geol., Adsorption of dissolved copper and phosphate by natural and peroxide-treated marine sediments was :// Lake CO, Maclntyre WG () Phosphate and tripolyphosphate adsorption by clay minerals and estuarine sediments. Bulletin Gloucester Point, Virginia Langmuir I () The adsorption of gases on plane surfaces of glass, mica, and platinum.

J Am Chem Soc – Carol A. Lake has written: 'Phosphate and tripolyphosphate adsorption by clay minerals and estuarine sediments' -- subject(s): Adsorption, Clay minerals, Estuaries, Estuarine sediments, Phosphates Understanding the effects of sediment disturbances on nutrient loadings is important for the management of estuarine settings.

This study investigated the initial influence of sediment disturbance on water column nutrient concentrations in a shallow estuarine setting within the Gold Coast Broadwater, using a laboratory-based approach. Undisturbed sediment cores ( mm Ø × mm length Materials and methodsPotassium dihydrogen phosphate (98%) and sodium tripolyphosphate (87%) were purchased from Aldrich and Merck, respectively.

adsorption by clay minerals and estuarine These results point out the specific chemical behavior of individual metals in estuarine sediments, and the need for direct confirmation of metal speciation in order to constrain predictive models that realistically assess the fate of metals in urban harbors and coastal sediments.}, doi = {/}, journal = {Eochemical Transactions   As described earlier, clay can denote a family of minerals or it can pertain to a size fraction (– μm) in sediments.

This latter meaning is sometimes intertwined with clay minerals, but in the connotation of size, clay-size particles, including Fe and Al oxyhydroxides, micas, silica polymorphs, and even feldspars, are common in soil and ://   AlIen, REFERENCES J.R.L.,A review of the origin and characteristics of recent alluvial sediments, Sedimentology, V.5, pp   The adsorption of phosphate on manganese dioxide (δMnO2) was determined in seawater as a function of pH, temperature, and salinity.

The adsorption in a simple electrolyte solution ( M NaCl) was adequately fitted using the triple-layer surface complexation model, assuming that phosphate formed outer-sphere complexes on the surface of ://   Phosphatic clay, a waste by-product of the phosphate mining industry, used as an effective sorbent for Pb from aqueous effluents.

The major parameters controlling aqueous Pb removal, viz. initial metal ion concentrations, solution pH, sorbent amounts, ionic strength and presence of both inorganic and organic ligands were evaluated using batch Pb/Ca ion exchange on phosphate-modified kaolinite clay adsorbents is endothermic in nature and nonspontaneous.

However, with increase in temperature, spontaneity of the ion exchange reaction increased. This study suggests that liming of kaolinitic soils will decrease strongly the adsorption capacity of the soil for Pb 2+, especially when they have initially adsorbed :// The structure of kaolinite consists of layers stacked one above the other.

Kaolinite contains Al 3+ in the octahedral sites and Si 4+ in the tetrahedral sites (Figure 5).The layer is electrically neutral and adjacent layers are held together by hydrogen bonding between the basal oxygens of the tetrahedral sheet and the hydroxyls of the exterior plane of the adjacent octahedral :// 1.

Introduction [2] Fine‐grained cohesive sediments are one of the major constituents of suspended particulate matter in nearly all types of natural waters, such as rivers, estuaries, and oceans [Black et al., ; Maggi, ; Mehta et al., ].They mainly consist of different types of clay minerals, of which kaolinite, illite, and smectite are very abundant in aquatic environments as Clays have been used by man as raw materials since the Upper Palaeolithic era.

The use of clays in pottery ceramics was the most widespread application of clays for mankind in ancient times and the oldest ceramic article found is the Dolni Vestonice Venus, a female figurine dated at 26–30 ka (Vandiver et al., ).The oldest pottery ceramic articles found so far, which have also been dated ().

Phosphate adsorption and release from sediments of brackish lagoons: pH, oxygen and loading influence. Phosphorus and copper leaching from dredged sediment applied on a sandy loam soil: Column study.

Physical and chemical characterisation of canal sediments and their potential remediation using ://   While alum amendments have shown to be effective in lowering water-soluble phosphate levels in poultry litter, the mechanism by which this occurs is not fully known. To determine the solid-state speciation of phosphate in litter samples, experiments were conducted with X-ray absorption near edge structure (XANES) spectroscopy.

XANES analysis reveals that, in unamended samples, phosphate is Clay mineral diagenesis begins within centimetres of the sediment–water interface and is a process which, in surface sediments, largely involves the formation of clay minerals from reactive components such as biogenic opal, degraded aluminosilicates and amorphous aluminium and iron oxyhydroxides (Foscolos & Powell, ; Aplin, ).

Book Chapters. Stone AT (). Reactions of extracellular organic ligands with dissolved metal ions and mineral surfaces. Geomicrobiology: Interactions Between Microbes and Minerals. Stone A, Knight MA, Nowack B (). Speciation and Chemical Reactions of Reovirus Type 3 and coliphage T1 did not share common adsorption sites on montmorillonite and kaolinite, which suggests the importance of using more than one type of virus, especially in combination, to predict virus behavior (e.g.

adsorption, loss of infectivity) in soils and sediments containing clay minerals (Lipson and Stotzky b). The Adsorption, on the other hand, is a simple and cost‐effective technology that has been widely used for remediation of numerous contaminants in waters, wastewaters, and soils.

Numerous phyllosilicate and oxide clay minerals have been investigated as adsorbents for