Cited by 220Adsorption and biosorption for pollutant removalCoal and Its By-productsZeolite Catalysis and Synthesis

Solid-state conversion of fly ash to effective adsorbents for Cu removal from wastewater

Wang, Shaobin, Li, Lin, Zhu, Z.H.·2007·Journal of Hazardous Materials

Abstract

Solid-state conversion of fly ash to an amorphous aluminosilicate adsorbent (geopolymer) has been investigated under different conditions and the synthesised material has been tested for Cu2+ removal from aqueous solution. It has been found that higher reaction temperature and Na:FA ratio will make the adsorbents achieving higher removal efficiency. The adsorbent loading and Cu2+ initial concentration will also affect the removal efficiency while the adsorption capacity exhibits similarly at 30-40 degrees C. The adsorption capacity of the synthesised adsorbent shows much higher value than fly ash and natural zeolite. The capacity is 0.1, 3.5 and 92 mg/g, for fly ash, natural zeolite, and FA derived adsorbent, respectively. The kinetic studies indicate that the adsorption can be fitted by the second-order kinetic model. Langmuir and Freundlich isotherms also can fit to the adsorption isotherm.

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Crossref · 10.1016/j.jhazmat.2006.06.018

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Authors
Wang, S., Li, L., & Zhu, Z. H.
Affiliations
  • Curtin University (AU)
  • Chinese Academy of Sciences (CN)
Corresponding author
Wang, Shaobin
Venue
Journal of Hazardous Materials
Publisher
Elsevier BV
Published
2007-01
Volume
139
Issue
2
Pages
254-259
ISSN
0304-3894 (ISSN-L)
OpenAlex
W2009580326
Cited by
220
References
20
Citations by year
2026: 3 · 2025: 11 · 2024: 14 · 2023: 9 · 2022: 11 · 2021: 17 · 2020: 14 · 2019: 24 · 2018: 19 · 2017: 20 · 2016: 15 · 2015: 12 · 2014: 10 · 2013: 9 · 2012: 10
FWCI
5.43
Type
journal article
Language
en
Open access
closed
Locations
  • Journal of Hazardous Materials (publishedVersion)
  • PubMed (publishedVersion)
Topics
  • Physical Sciences › Environmental Science › Water Science and Technology › Adsorption and biosorption for pollutant removal
  • Physical Sciences › Earth and Planetary Sciences › Geochemistry and Petrology › Coal and Its By-products
  • Physical Sciences › Chemistry › Inorganic Chemistry › Zeolite Catalysis and Synthesis
Keywords
fly ash, geopolymer, copper removal, heavy metal adsorption, wastewater treatment, solid-state conversion, adsorption kinetics, second-order kinetics, Langmuir isotherm, Freundlich isotherm, reaction temperature
MeSH terms
Adsorption, Aluminum Silicates, Carbon, Copper, Kinetics, Temperature, Water Pollutants, Chemical, Zeolites, Water Purification, Particulate Matter, Coal Ash

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