Adsorptive removal of bisphenol A using synthesized magnetite nanoparticles

Abstract

Bisphenol A (BPA) is an organic compound which is often used as plasticizer and has been reported to be hazardous to man. In this research the efficiency of removal of BPA from water by magnetite through adsorption process was studied. The magnetite was synthesized using reverse co-precipitation method and fully characterized. Various physicochemical parameters affecting the adsorption of BPA using magnetite were studied as well. The optimum time for the adsorption process was found to be 60 min at pH of 6, adsorbent dose of 0.2 g and 50 ppm of BPA. The adsorption data were fitted by the Langmuir adsorption isotherm best with a regression value of 0.957. The R L value was 0.179 which revealed that the process is favorable. The Freundlich constant n which was 1.901 also revealed that the adsorption is normal and favorable. The data were in agreement with the pseudo-second-order kinetics with regression value of 0.98. From the thermodynamic studies, the process was found to be exothermic and the Gibb's free energy value which was negative showed that the adsorption was spontaneous. The synthesized magnetite therefore offers great potential for the remediation of bisphenol A-contaminated media.

Removal of bisphenol A from aqueous media using a highly selective adsorbent of hybridization cyclodextrin with magnetic molecularly imprinted polymer

“…Recently, materials based on magnetic iron oxides have become a promising alternative adsorbent because the technique may enhance the adsorption process by eliminating the filtration and centrifuging steps in other methods [6,7] and also provides a wide surface area, separation properties and low toxicity [13]. Nanoparticles of iron oxides have been widely used to eliminate BPA and to further isolate adsorbents from matrix samples [14][15][16][17][18]. While the wide area-to-volume ratio of nanomaterials brings about an exponential increment in adsorption capacity, the incidence of aggregation, non-specificity and low stability can restrict the usage of such nanotechnologies owing to the absence of functionality [16].…”

Fast, efficient and clean adsorption of bisphenol-A using renewable mesoporous silica nanoparticles from sugarcane waste ash

“…4,12 Many researchers have investigated the BPA removal by adsorption using different adsorbents, such as clays, 13,14 zeolites, 15,16 chitosan, 17,18 and agricultural wastes. 19,20 A decade ago, Dong et al 2010 (ref. 21) prepared zeolite from coal y ash with low and high CaO content.…”

Adsorptive Behavior of an Activated Carbon for Bisphenol A Removal in Single and Binary (Bisphenol A—Heavy Metal) Solutions

“…Bisphenol A (BPA) is recognized as a dangerous endocrine disruptor. It causes a number of hazardous effects on living beings such as fertility damage and fetal development problems [1][2][3]. It has been extensively used as a crude material in the industrial production of epoxy resins and polycarbonate plastics, which accounted for nearly 64% of BPA demand in 2018.…”