Published January 2016 | Version v1
Journal article Metadata-only

Biosorption characteristics of uranium(VI) and thorium(IV) ions from aqueous solution using CaCl2-modified Giant Kelp biomass

Creators

  • 1. East China Institute of Technology, Nanchang (China). State Key Laboratory Breeding Base of Nuclear Resources and Environment
  • 2. University of New South Wales, Sydney (Australia). School of Chemical Sciences and Engineering

Description

The CaCl2-modified Giant Kelp biomass (Ca-GK) showed a higher adsorption capacity for U(VI) and Th(IV) ions than the unmodified biomass. FTIR analysis indicates that carboxylic (as main adsorption sites), hydroxyl, sulfonate, and amino groups are responsible for U(VI) and Th(IV) adsorption. The kinetic analysis indicates that the rate-limiting step is the chemical sorption process. The maximum mono-layer adsorption capacities of Ca-GK in mono-component systems were 156 and 135 mg g-1 for U(VI) and Th(IV) ions, respectively. In bicomponent systems, the adsorption capacities for both U(VI) and Th(IV) were reduced significantly, and the Ca-GK showed a slight adsorption preference for U(VI) over Th(IV). (author)

Additional details

Publishing Information

Journal Title
Journal of Radioanalytical and Nuclear Chemistry
Journal Volume
307
Journal Issue
1
Journal Page Range
p. 635-644
ISSN
0236-5731
CODEN
JRNCDM

INIS

Country of Publication
Hungary
Country of Input or Organization
Hungary
INIS RN
47011208
Subject category
S37: INORGANIC, ORGANIC, PHYSICAL AND ANALYTICAL CHEMISTRY;
Descriptors DEI
AMINO ACIDS; AQUEOUS SOLUTIONS; BIOLOGICAL MATERIALS; CALCIUM CHLORIDES; CARBOXYLIC ACIDS; CHEMICAL REACTION KINETICS; FOURIER TRANSFORM SPECTROMETERS; HYDROXYL RADICALS; SORPTION; SULFONATES; THORIUM; URANIUM
Descriptors DEC
ACTINIDES; ALKALINE EARTH METAL COMPOUNDS; CALCIUM COMPOUNDS; CALCIUM HALIDES; CARBOXYLIC ACIDS; CHLORIDES; CHLORINE COMPOUNDS; DISPERSIONS; ELEMENTS; HALIDES; HALOGEN COMPOUNDS; HOMOGENEOUS MIXTURES; KINETICS; MATERIALS; MEASURING INSTRUMENTS; METALS; MIXTURES; ORGANIC ACIDS; ORGANIC COMPOUNDS; ORGANIC SULFUR COMPOUNDS; RADICALS; REACTION KINETICS; SOLUTIONS; SPECTROMETERS

Optional Information

Notes
33 refs.