Preparation of Polyaniline/Emulsion Microsphere Composite for Efficient Adsorption of Organic Dyes

Abstract

Surface-functionalized polymeric microspheres have wide applications in various areas. Herein, monodisperse poly(styrene–methyl methacrylate–acrylic acid) (PSMA) microspheres were prepared via emulsion polymerization. Polyaniline (PANI) was then coated on the PSMA surface via in situ polymerization, and a three-dimensional (3D) structured reticulate PANI/PSMA composite was, thus, obtained. The adsorption performance of the composite for organic dyes under different circumstances and the adsorption mechanism were studied. The obtained PANI/PSMA composite exhibited a high adsorption rate and adsorption capacity, as well as good adsorption selectivity toward methyl orange (MO). The adsorption process followed pseudo-second-order kinetics and the Langmuir isotherm. The maximum adsorption capacity for MO was 147.93 mg/g. After five cycles of adsorption–desorption, the removal rate remained higher than 90%, which indicated that the adsorbent has great recyclability. The adsorbent materials presented herein would be highly valuable for the removal of organic dyes from wastewater.

Pyridine‐Rich Novolac‐Based Network as an Effective Adsorbent for Removing Azo Dyes

“…We studied the azo dye adsorption as a function of contact time at initial pH values of 2.30, 7.20 and 10.96. The pH of the solution has been reported to present an important controlling parameter in the dye adsorption process because it affects the adsorbent surface charge and the degree of ionization of dye adsorbates . The effects of contact time and pHs on adsorption of azo‐dyes ( MO/OII/OG) onto 1 were investigated at constant temperature (25 °C).…”

Adsorption Processes in the Removal of Organic Dyes from Wastewaters: Very Recent Developments

“…Methylene blue functionalized-organic polymer 2740 [55] cellulose hydrogel 756 [56] modified grapheme oxide 257 [57] functionalized lignosulfate 63 [58] Methyl orange NiAlTi 1250 [59] MIL-101-NH 2 462 [60] polyaniline composite 148 [26] Crystal violet fly ash 433 [61] polyaniline-metal oxides 50 [24] Congo red MIL-100(Fe) 1791 [31] cellulose/carbon aerogels 585 [43] polyaniline-metal oxides 33 [24] Rhodamine B Ni-graphene composite 963 [14] MoS 2 nanoflowers 365 [62] polyaniline-metal oxides 20 [24]…”

Sorption of Sulfamethoxazole on Inorganic Acid Solution-Etched Biochar Derived from Alfalfa

“…Nowadays, the technologies for the removal of sulfamethoxazole in water environments include adsorption [ 11 ], biodegradation [ 12 ] and chemical methods [ 13 ]. Among these, adsorption has the advantages of simple operation and high removal efficiency, and is presently the most commonly used removal method [ 14 ].…”