Cellular concrete-supported cost-effective adsorbents for aqueous arsenic and heavy metals abatement

D. Martemianov, B. B. Xie, T. Yurmazova, M. Khaskelberg, F. Wang, C. H. Wei, S. Preis

Research output: Contribution to journalArticle

4 Citations (Scopus)

Abstract

Aqueous arsenic and heavy metals in concentrations exceeding sanitary limits present an acute regional problem. Adsorption is an effective although costly method of pollutants removal. This makes the search for low-cost effective disposable adsorbents necessary. The adsorbents using vermiculite concrete and aerated autoclaved light concrete (aerocrete) modified with iron oxyhydroxide were synthesized and studied. The specimens of adsorbent materials showed the adsorption capacity more than two-fold exceeding the vermiculite-based adsorbents in respect to copper and lead cations, 53 and 195 mg g-1, respectively, having the adsorption capacity for cadmium comparable to exfoliated vermiculite at 35.5 mg g-1. Arsenic anions were adsorbed in amounts comparable to the ones of carbon composites-supported ferric oxyhydroxide adsorbents, up to 16 mg g-1 of arsenate. The analysis of adsorption dependent on temperature showed its spontaneous low-energy ion-exchange character. Desorption of heavy metals and arsenic anions from used adsorbents meets the requirements of drinking water standards with the exception of cadmium, meeting the agricultural use standard of 0.01 mg L-1. The new synthetic adsorbents were found to be cost-efficient, safe and reliable in removal of arsenic anions and heavy metals cations.

Original languageEnglish
Pages (from-to)3930-3941
Number of pages12
JournalJournal of Environmental Chemical Engineering
Volume5
Issue number4
DOIs
Publication statusPublished - 1 Aug 2017

Fingerprint

Arsenic
Heavy Metals
Adsorbents
Heavy metals
arsenic
vermiculite
Concretes
heavy metal
adsorption
anion
cost
Costs
cadmium
cation
Anions
Adsorption
Negative ions
pollutant removal
Cadmium
arsenate

Keywords

  • Aerated concrete
  • Arsenate
  • Arsenite
  • Ferric oxyhydroxide
  • Gas-concrete

ASJC Scopus subject areas

  • Chemical Engineering (miscellaneous)
  • Waste Management and Disposal
  • Pollution
  • Process Chemistry and Technology

Cite this

Cellular concrete-supported cost-effective adsorbents for aqueous arsenic and heavy metals abatement. / Martemianov, D.; Xie, B. B.; Yurmazova, T.; Khaskelberg, M.; Wang, F.; Wei, C. H.; Preis, S.

In: Journal of Environmental Chemical Engineering, Vol. 5, No. 4, 01.08.2017, p. 3930-3941.

Research output: Contribution to journalArticle

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