ArticleEnvironmental sciences Europe2018
Adsorption of aliphatic polyhydroxy carboxylic acids on gibbsite: pH dependency and importance of adsorbate structure.
Article in Environmental sciences Europe, 2018. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 2 papers.
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2 citing papers in PubMed.
- Sequential reagents release from layered effervescent tablets for simplifying multi-step sample preparation and extraction of metal ions from environmental samples.Mikrochimica acta · 2026Article
- Peculiarities of Bioaccumulation and Toxic Effects Produced by Nanoparticles of Molybdenum (VI) Oxide under Multiple Oral Exposure of Rats: Examination and Comparative Assessment.Pharmaceutical nanotechnology · 2022Article
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Authors and funding
3 authors.
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Abstract
backgroundAliphatic (poly)hydroxy carboxylic acids [(P)HCA] occur in natural, e.g. soils, and in technical (waste disposal sites, nuclear waste repositories) compartments . Their distribution, mobility and chemical reactivity, e.g. complex formation with metal ions and radionuclides, depend, among others, on their adsorption onto mineral surfaces. Aluminium hydroxides, e.g. gibbsite [α-Al(OH)
resultsThe sorption of gluconic acid at pH 4, 7, 9, and 12 was best described by the "two-site" Langmuir isotherm, combining "high affinity" sorption sites (adsorption affinity constants [Formula: see text] > 1 L mmol
conclusionsThe adsorption behaviour of (P)HCAs is best described by a combination of adsorption properties of carboxylic acids at acidic pH and of polyols at alkaline pH. Depending on the molecular properties of the adsorbates and on pH, electrostatic interactions, hydrogen bonding, and ternary surface complexation contribute in varying degrees to the adsorption process. Linear distribution coefficients
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