Removal of bisphenol A and some heavy metal ions by polydivinylbenzene magnetic latex particles

Abstract

In this study, magnetic polydivinylbenzene latex particles MPDVB with a core-shell structure were tested for the removal of bisphenol A (BPA), copper Cu(II), lead Pb(II), and zinc Zn(II) from aqueous solutions by a batch-adsorption technique. The effect of different parameters, such as initial concentration of pollutant, contact time, adsorbent dose, and initial pH solution on the adsorption of the different adsorbates considered was investigated. The adsorption of BPA, Cu(II), Pb(II), and Zn(II) was found to be fast, and the equilibrium was achieved within 30 min. The pH 5-5.5 was found to be the most suitable pH for metal removal. The presence of electrolytes and their increasing concentration reduced the metal adsorption capacity of the adsorbent. Whereas, the optimal pH for BPA adsorption was found 7, both hydrogen bonds and π-π interaction were thought responsible for the adsorption of BPA on MPDVB. The adsorption kinetics of BPA, Cu(II), Pb(II), and Zn(II) were found to follow a pseudo-second-order kinetic model. Equilibrium data for BPA, Cu(II), Pb(II), and Zn(II) adsorption were fitted well by the Langmuir isotherm model. Furthermore, the desorption and regeneration studies have proven that MPDVB can be employed repeatedly without impacting its adsorption capacity.

Graphene Oxide Based Magnetic Nanocomposites with Polymers as Effective Bisphenol–A Nanoadsorbents

“…Graphene-oxide-based nanocomposites contained hydrophobic (i.e., graphene basal planes with aromatic rings and various hydrophilic groups such as hydroxyl (–OH) and carboxyl (O=C–O) [69]. BPA also had both hydrophobic (i.e., phenyl groups) and hydrophilic (i.e., hydroxylic) functional groups [70]. Due to the comparable configuration of BPA and GO-polymer composites, it was expected that two types of adsorbent-adsorbate interactions might be responsible for the adsorption of BPA onto the composites.…”

“…Due to the comparable configuration of BPA and GO-polymer composites, it was expected that two types of adsorbent-adsorbate interactions might be responsible for the adsorption of BPA onto the composites. One probable interaction is hydrogen bonding (H-bond) between oxygen-containing groups of the materials and/or with the benzene rings on the materials surface that can also act like hydrogen bond donors and hydroxylic functional groups of BPA [70,71]. The other one may be π–π interactions between the benzene rings contained in BPA and GO-based materials.…”

Enhanced Adsorption of Bisphenol A from Aqueous Solution with 2-Vinylpyridine Functionalized Magnetic Nanoparticles

“…Yantasee et al [19] utilized thiol functionalized superparamagnetic nanoparticles to remove heavy metals from aqueous systems. Polydivinylbenzene magnetic latex particles were prepared for the removal of BPA and some heavy metal ions [20]. Moreover, Zhang et al [21] found that magnetite nanoparticles (Fe 3 O 4 MNPs) exhibited ultrahigh adsorption towards chlorotetracycline, and many other studies suggested that the magnetic composite adsorbent could remove pollutants [22,23,24].…”