Published April 2018 | Version v1
Journal article Metadata-only

Synthesis and adsorption characteristics of calix[6]arene derivative modified Aspergillus niger-Fe3O4 bio-nanocomposite for U(VI)

Creators

  • 1. University of South China, Hengyang (China). Hunan Province Key Laboratory of Green Development Technology for Extremely Low Grade Uranium Resources
  • 2. University of South China, Hengyang (China). School of Public Health
  • 3. University of South China, Hengyang (China). Institute of Pathogenic Biology

Description

A new type of magnetic bioadsorbent (CDAB) was synthesized by reaction of amidoxime modified calix[6]arene derivative with the Aspergillus niger-Fe3O4 bio-nanocomposite, the bioadsorbent have been well characterized with FT-IR, SEM-EDS, XPS and VSM. The effects of various experimental parameters include pH, contact time, initial uranium(VI) concentration, adsorbent dosage and temperature on the bioadsorption of uranium(VI) were investigated in detail. Adsorption experimental results showed the adsorption process of CDAB was pseudo-second order kinetic model and Langmuir adsorption isotherm model. The maximum adsorption capacities of CDAB were calculated to be 77.04 mg g-1 for uranium(VI). The adsorption efficiency of CDAB towards U(VI) could reach at 83.6% with a considerable selectivity. In addition, the thermodynamic parameters indicated that the adsorption process was spontaneous and endothermic. (author)

Additional details

Publishing Information

Journal Title
Journal of Radioanalytical and Nuclear Chemistry
Journal Volume
316
Journal Issue
1
Journal Page Range
p. 331-339
ISSN
0236-5731
CODEN
JRNCDM

INIS

Country of Publication
Hungary
Country of Input or Organization
Hungary
INIS RN
49052916
Subject category
S37: INORGANIC, ORGANIC, PHYSICAL AND ANALYTICAL CHEMISTRY;
Descriptors DEI
ADSORBENTS; ADSORPTION ISOTHERMS; FOURIER TRANSFORM SPECTROMETERS; NANOCOMPOSITES; THERMODYNAMIC PROPERTIES; URANIUM; WASTE WATER
Descriptors DEC
ACTINIDES; ELEMENTS; HYDROGEN COMPOUNDS; ISOTHERMS; LIQUID WASTES; MATERIALS; MEASURING INSTRUMENTS; METALS; NANOMATERIALS; OXYGEN COMPOUNDS; PHYSICAL PROPERTIES; SPECTROMETERS; WASTES; WATER

Optional Information

Notes
23 refs.