Effective adsorption of lead ions using fly ash obtained in the novel circulating fluidized bed combustion technology

Tomasz Kalak , Anna Kłopotek , Ryszard Cierpiszewski


Fly ash was examined for the separation efficiency of Pb2+ ions from water in batch experiments. Fly ash is industrial waste produced from the incineration of sewage sludge by the novel circulating fluidized bed combustion (CFBC) technology and was taken into the experiments. Physical and chemical properties of the material were characterized using several methods, such as fraction analysis, particle size distribution, bulk density, composition, morphology, surface and internal structure by elemental analysis, FT-IR, scanning electron microscopy (SEM), energy dispersive spectroscopy (EDS), X-ray diffraction analysis, comprehensive thermal analysis, fly ash texture by BET adsorption isotherms, specific surface area, volume of pores, average pore diameter and pore volume distribution by the BJH method. The influence of pH values on zeta potential of the fly ash surface before and after the adsorption process was conducted. The calculated maximum adsorption capacity of Pb2+ by fly ash reached 51.98 mg/g. The kinetic analysis revealed that the adsorption process is better described by the pseudo-second order equation and it is well fitted to the Freundlich model. In conclusion, fly ash obtained in the CFBC technology is a promising low cost adsorbent for the highly effective recovery of Pb2+ from wastewater.
Author Tomasz Kalak (WT / KTiEPP)
Tomasz Kalak,,
- Department of Industrial Products and Ecology
, Anna Kłopotek (WT / KTiEPP)
Anna Kłopotek,,
- Department of Industrial Products and Ecology
, Ryszard Cierpiszewski (WT / KTiEPP)
Ryszard Cierpiszewski,,
- Department of Industrial Products and Ecology
Journal seriesMicrochemical Journal, ISSN 0026-265X, e-ISSN 1095-9149, (N/A 70 pkt)
Issue year2019
Publication size in sheets0.7
Keywords in Polishadsorpcja, usuwanie jonów ołowiu, separacja, popiół lotny, izotermy, kinetyka
Keywords in Englishadsorption, recovery of lead ions, separation, fly ash, isotherms, kinetics
ASJC Classification1602 Analytical Chemistry; 1607 Spectroscopy
URL https://www.sciencedirect.com/science/article/abs/pii/S0026265X18309627
Languageen angielski
Score (nominal)70
Score sourcejournalList
ScoreMinisterial score = 70.0, 17-08-2020, ArticleFromJournal
Publication indicators WoS Citations = 9; Scopus SNIP (Source Normalised Impact per Paper): 2016 = 1.305; WoS Impact Factor: 2018 = 3.206 (2) - 2018=2.993 (5)
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