Volume no :20, Issue no: 1, July (2019)

BIOACTIVE NANOCOMPOSITES BASED ON POLYPYRROLE AND POLYANILINE AS A HIGHLY EFFICIENT ADSORBENTS IN REMOVAL OF Pb AND Cd, USEABLE IN HOUSEHOLD WATER TREATMENT

Author's: Moslem Mansour Lakouraj and Vahid Hasantabar
Pages: [39] - [58]
Received Date: August 8, 2019
Submitted by:
DOI: http://dx.doi.org/10.18642/jmseat_7100122095

Abstract

The development of simple methods for the removal of heavy metal cations from water samples is an attractive field of research. In this regard, two novel magnetic tri-layer core-shell-shell bioactive nanocomposites, polypyrrole@polyxanthone and polyaniline@polyxanthone triazole@ were prepared by a combination process involving click reaction and emulsion polymerization, successfully. Then, uptake of Pb(II) and Cd(II) from an aqueous solution by introduced materials was evaluated as a function of pH, adsorption dosage, contact time, and initial concentration of Pb(II) and Cd(II) through batch studies. The bioactive nanocomposites exhibited a high adsorption percentage 92.63 and 72.84 for Pb(II) and 90.66 and 93.70 for Cd(II) in optimized conditions, respectively.

Isotherm and kinetic models showed that interactions of Pb(II) and Cd(II) with bioactive nanocomposites were in good agreement with the Freundlich isotherm and pseudo-second-order kinetic model. The maximum adsorption capacity of Pb(II) for two bioactive nanocomposites was 313 and 526mg/g, and in about Cd(II) was found 357 and 555.5mg/g, respectively. Hence, the introduced bioactive nanocomposites with high efficiency can be promising candidates for microorganism deactivator and risky ions removal in household water treatment.

Keywords

nanobioactive, ion removal, household water treatment, Pb(II), Cd(II).