Amine-algae interactions: cation-exchange and possible hydrogen bonding

Crist, R. H.; Oberholser, Karl; Wong, Barry Hon Cheung; Crist, DeLanson R.

doi:10.1021/es00032a004

Cited by 19 publications

(14 citation statements)

References 14 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Sorption of amines on Vaucheria. It was found with Vaucheria [7] that protonated amines function as cations which undergo ion exchange with Ca, Mg. Ethylenediamine (en), fully protonated as the dication at pH 5, displaced an equivalent amount of Ca, Mg. The amount of sorbed H2en +2 was measured by using ~4C-labelled en.…”

Section: Sorption Of CD From a Cd(oh) 2 Solid Suspensionmentioning

confidence: 99%

Ion exchange systems in proton-metal reactions with algal cell walls

Crist

Grist

Martin

et al. 1994

FEMS Microbiology Reviews

View full text Add to dashboard Cite

Algal cell walls contain acidic polysaccharides, e.g. alginic acid in many marine species, and pectin in fresh-water species. At neutral pH these provide anionic sites which bind ionically to metals, and acidification releases metals when covalent bonds to H are made. Added Cu releases an equivalent amount of Ca, Mg, H from Vaucheria, and protonated amines also displace metals. Interestingly, diamines, which function as efficient growth promoters, are sorbed more strongly than monoamines based on Langmuir adsorption constants. Sorption of Pb and Cd on Rhizoclonium from the solid hydroxides releases Na, Ca, Mg from the alga and OH from the hydroxide in essentially stoichiometric amounts. Sorbed heavy, metals can be removed by precipitation of the sulfide (Cd), hydroxide (Cm AI, and Pb), or as an EDTA complex (Pb) in ion exchange processes. Values of ion exchange constants for displacement of Ca by Mg, Zn, Cd, Pb, and Cu on Vaucheria are independent of pH and increase with the (charge)2/radius of metal ions, as also observed for K and AI. These results indicate a non-cooperative behavior of anionic sites which interact with these metals by electrostatic attractions. Rates of metal desorption and ion exchange constants with alginates as model systems were also investigated.

show abstract

Section: Sorption Of CD From a Cd(oh) 2 Solid Suspensionmentioning

confidence: 99%

Ion exchange systems in proton-metal reactions with algal cell walls

Crist

Grist

Martin

et al. 1994

FEMS Microbiology Reviews

View full text Add to dashboard Cite

show abstract

“…One method currently being studied is the use of plant cells, living or dead, to accumulate metals from aqueous solutions (3)(4)(5)(6)(7)(8). Another method focuses on genetically altering plants to produce better phytoremediators (9).…”

Section: Introductionmentioning

confidence: 99%

Investigation of the Ability of Plants Found in Western Kentucky to Hyperaccumulate Lead and Aluminum from Soils

Weatherford

Hammond

Ratliff

1997

Microchemical Journal

View full text Add to dashboard Cite

“…Sorption by various microorganisms in aquatic systems has been shown for hydrophobic organic chemicals (HOCs) (2, 47), metals (37), and organic amines (14). A consensus on biosorption mechanisms has not been reached, and usually no distinction is made between sorption onto extracellular regions and absorption into the cells.…”

mentioning

confidence: 99%

“…Biosorption of trace metals has been shown to occur via adsorption onto extracellular bacterial capsules with minimal intracellular uptake (37). Sorption of organic amines by algae has also been described by mechanisms including ion exchange and hydrophobic bonding (14). Occurrence of biosorption and bacterial migration, regardless of the underlying mechanisms, suggests the potential for biofacilitated transport of contaminants.…”

mentioning

confidence: 99%

Impact of Bacterial Biomass on Contaminant Sorption and Transport in a Subsurface Soil

Bellin

Rao

1993

Appl Environ Microbiol

View full text Add to dashboard Cite

The objective of this study was to investigate the impact of bacterial biomass on the sorption and transport of three solutes (quinoline, naphthalene, and 45Ca) in a subsurface soil. Miscible displacement techniques were employed to measure sorption and transport of the above compounds during steady, saturated water flow in sterile and/or bacterium-inoculated soil columns. The soil was inoculated with either a quinoline-degrading bacterium, Pseudomonas sp. 3N3A isolate, or its mutant isolate, B53, which does not degrade quinoline. In soil columns inoculated with the B53 and 3N3A isolates, quinoline sorption was reduced by about 60 and 20%o, respectively. In contrast, 45Ca sorption was minimally reduced, which indicated that biomass did not significantly alter the cation-exchange capacity of the soil. Biomass impacts on sorption were solute specific, even when the sorption mechanism for both quinoline and 45Ca was similar. Thus, the differential response is attributed to biomass-induced changes in quinoline speciation; an increase in pH at the sorbent-water interface would result in a larger proportion of the neutral species and a decrease in sorption. Sorption of naphthalene was reduced by about 30%o, which was attributed to accessibility of hydrophobic regions. Minimal biosorption of all solutes indicated negligible biofacilitated transport. Alteration of the soil surfaces upon addition of bacterial biomass reduced sorption of quinoline and naphthalene, thereby enhancing transport.

show abstract

Amine-algae interactions: cation-exchange and possible hydrogen bonding

Cited by 19 publications

References 14 publications

Ion exchange systems in proton-metal reactions with algal cell walls

Ion exchange systems in proton-metal reactions with algal cell walls

Investigation of the Ability of Plants Found in Western Kentucky to Hyperaccumulate Lead and Aluminum from Soils

Impact of Bacterial Biomass on Contaminant Sorption and Transport in a Subsurface Soil

Contact Info

Product

Resources

About