Home > Research > Publications & Outputs > Enhanced interlayer trapping of Pb(II) ions wit...


Text available via DOI:

View graph of relations

Enhanced interlayer trapping of Pb(II) ions within kaolinite layers: intercalation, characterization, and sorption studies

Research output: Contribution to journalJournal articlepeer-review

  • A. Maged
  • I.S. Ismael
  • S. Kharbish
  • B. Sarkar
  • S. Peräniemi
  • A. Bhatnagar
<mark>Journal publication date</mark>1/01/2020
<mark>Journal</mark>Environmental Science and Pollution Research
Issue number2
Number of pages18
Pages (from-to)1870–1887
Publication StatusPublished
Early online date23/11/19
<mark>Original language</mark>English


Lead (Pb(II)) pollution in water poses a serious threat to human health in many parts of the world. In the past decades, research has been aimed at developing efficient and cost-effective methods to address the problem. In this study, dimethyl sulfoxide (DMSO) and potassium acetate (K-Ac) intercalated kaolinite complexes were synthesized and subsequently utilized for Pb(II) removal from
water. The intercalation of kaolinite with DMSO was found to be useful for expanding the interlayer space of the clay mineral from 0.72 to 1.12 nm. Kaolinite intercalation with K-Ac (KDK) increased the interlayer space from 1.12 to 1.43 nm. The surface area of KDK was found to be more than threefold higher as compared to natural kaolinite (NK). Batch experimental results revealed that
the maximum Pb(II) uptake capacity of KDK was 46.45 mg g−1 which was higher than the capacity of NK (15.52 mg g−1).
Reusability studies showed that KDK could be reused for 5 cycles without substantially losing its adsorption capacity. Furthermore, fixed-bed column tests confirmed the suitability of KDK in continuous mode for Pb(II) removal. Successful application of intercalated kaolinite for Pb(II) adsorption in batch and column modes suggests its application in water treatment (especially
removal of divalent metals).