Multivariate optimization of removing of cobalt(II) with an efficient aminated-GMA polypropylene adsorbent by induced-grafted polymerization under simultaneous gamma-ray irradiation

Abstract

Nowadays, radiation grafting polymer adsorbents have been widely developed due to their advantages, such as low operating cost, high efficiency. In this research, glycidyl methacrylate monomers were grafted on polypropylene polymer fibers by simultaneous irradiation of gamma-ray with a dose of 20 kGy. The grafted polymer was then modified using different amino groups and tested for adsorption of cobalt ions in an aqueous solution. Finally, the modified polymer adsorbent with a high efficiency for cobalt ions adsorption was synthesized and tested. Different modes of cobalt ions adsorption were tested in other adsorption conditions, including adsorption contact time, pH, different amounts of adsorbent mass, and different concentrations of cobalt ions solution. The adsorbent structure was characterized with FT-IR, XRD, TG and SEM techniques and illustrated having an efficient grafting percentage and adsorption capability for cobalt removing by batch experiments. The optimum conditions were obtained by a central composite design: adsorbent mass = 0.07 g, initial concentration = 40 mg/L, time = 182 min, and pH = 4.5 with ethylenediamine as a modified monomer and high amination percentage. Kinetics and equilibrium isotherms observation described that the experimental data followed pseudo-second-order and Langmuir models, respectively. The maximum adsorption capacity from Langmuir isotherm capacity is obtained equal to 68.02 mg/g.

Targeted elimination of molybdenum ions from a leaching solution with the ability of radiated grafting GMA-PAN nanofibers

“…According to the findings, it is shown that monomers are swiftly bound on the surface of the polymer adsorbent when utilizing the simultaneous irradiation approach. This very effective adsorbent may be readily extracted from the solution and suggested as a potential use in the industry 73 .…”

Functional Microfiber Nonwoven Fabric with Sialic Acid-Immobilized Polymer Brush for Capturing Lectin in Aerosol

“…In the case of IDA-EDC MNWF, the peaks of epoxy and ester groups were reduced compared to GMA MNWF, and it was confirmed that new peaks of N-H were generated at peaks of 1554-1564 [48,54] and 1659-1662 cm −1 [46,51,54]. In addition, new peaks of the hydroxyl group (-OH) and N-H were generated at 3250-3400 cm −1 [47][48][49][50][51][52][53]55], confirming the introduction of IDA-EDC. In the case of NANA MNWF, the peak indicating C=O and the carboxyl group (COOH) was observed at 1726 cm −1 [47][48][49][50][51][52][53], significantly increased, and the hydroxyl group of 3250-3400 cm −1 [47][48][49][50][51][52][53]55] was also increased when compared with the peak of IDA-EDC MNWF.…”

“…In addition, new peaks of the hydroxyl group (-OH) and N-H were generated at 3250-3400 cm −1 [47][48][49][50][51][52][53]55], confirming the introduction of IDA-EDC. In the case of NANA MNWF, the peak indicating C=O and the carboxyl group (COOH) was observed at 1726 cm −1 [47][48][49][50][51][52][53], significantly increased, and the hydroxyl group of 3250-3400 cm −1 [47][48][49][50][51][52][53]55] was also increased when compared with the peak of IDA-EDC MNWF. The introduction of NANA was confirmed by increasing the peak size of the carboxyl group and the hydroxyl group.…”

“…The spectral results of FT-IR are shown in Figure 6, and the interpretation of each peak is shown in Table 2. For GMA MNWF, peaks in epoxy and ester groups were found at 747, 841, 972, 1053, 1166, and 1238 cm −1 , and peaks of C=O were found at 1726 cm −1 [46][47][48][49][50][51][52][53]. In the case of IDA-EDC MNWF, the peaks of epoxy and ester groups were reduced compared to GMA MNWF, and it was confirmed that new peaks of N-H were generated at peaks of 1554-1564 [48,54] and 1659-1662 cm −1 [46,51,54].…”

Turning waste into wealth: efficient and rapid capture of gold from electronic waste with a thiourea functionalised magnetic core stirring rod adsorbent and its application for heterogeneous catalysis

“…35 Thus, effective polymerisation and simultaneous controlled grafting of a polymer on to the surfaces play an important role in tuning the properties of the resulting adsorbents, such as hydrophobicity, adsorption rate and capacity. 36 Moreover, a distillation precipitation polymerisation (DPP) technique is a combination of precipitation and radical polymerisation, which has the advantage of simple operation, fast fabrication procedure, scalable production and controllable polymerisation. 37 In this work, a magnetotactic bacteria-inspired fast and efficient nanorod adsorbent (MCSR-ATU) was first fabricated by magnetically induced assembly, followed by DPP of ATU, which was applied to capture gold from the e-waste.…”