Abstract
Polymeric adsorbents with different properties were synthesized via suspension polymerization. Equilibrium and kinetics experiments were then performed to verify the adsorption capacities of the resins for molecules of various sizes. The adsorption of small molecules reached equilibrium more quickly than the adsorption of large molecules. Furthermore, the resins with small pores are easy to lower their adsorption capacities for large molecules because of the pore blockage effect. After amination, the specific surface areas of the resins decreased. The average pore diameter decreased when the resin was modified with either primary or tertiary amines, but the pore diameter increased when the resin was modified with secondary amines. The phenol adsorption capacities of the amine-modified resins were reduced because of the decreased specific area. The amine-modified resins could more efficiently adsorb reactive brilliant blue 4 owing to the presence of polar functional groups.
Highlights
Introduction of Polymeric AdsorbentsMoleculesNowadays, large amounts of wastewater containing pollutants such as pesticides, dyes, heavy metals, and pharmaceuticals have been produced because of increased agricultural applications and the growth of the pharmaceutical and chemical industries [1].Effluent containing even low concentrations of organic contaminants can be highly discernible and recalcitrant [2]
We have synthesized a series of mesoporous resins with different pore size distributions via suspension polymerization
These resins, which were suitable for the adsorption of macromolecules
Summary
Introduction of Polymeric AdsorbentsMoleculesNowadays, large amounts of wastewater containing pollutants such as pesticides, dyes, heavy metals, and pharmaceuticals have been produced because of increased agricultural applications and the growth of the pharmaceutical and chemical industries [1].Effluent containing even low concentrations of organic contaminants can be highly discernible and recalcitrant [2]. Large amounts of wastewater containing pollutants such as pesticides, dyes, heavy metals, and pharmaceuticals have been produced because of increased agricultural applications and the growth of the pharmaceutical and chemical industries [1]. The large-scale production and widespread use of chemical substances can cause serious environmental problems, making it an important public concern [3]. The effective removal of organic pollutants from water sources is necessary for environmental security and public health. Various materials have been used as adsorbents, including mesoporous silica, natural zeolites and activated carbons [4,5]. These materials have some disadvantages that limit their application, such as unfavorable selective adsorption or poor regeneration [6]
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