Removal of Cu(II) from Water Samples Using Glycidyl Methacrylate-Based Polymer Functionalized with Diethylenetriamine Tetraacetic Acid: Investigation of Adsorption Characteristics

Abstract

A macroporous glycidyl methacrylate (GMA)-methylmethacrylate (MMA)-divinyl benzene ( D V B ) t e r p o l y m e r f u n c t i o n a l i z e d w i t h diethylenetriamine tetraacetic acid (DTTA) (GMA-MMA-DVB-DTTA) sorbent was successfully applied for the uptake of Cu(II) from the aqueous solutions. Adsorption characteristics for copper ion were investigated by a batch sorption in under different experimental conditions, and the optimum parameters for the quantitative sorption of Cu(II) ion were found to be as follows: pH of 7.0, a contact time of 30.0 min, and a sorbent amount/solution volume ratio of 1.5 mg/mL. The quantitative elution from the sorbent was performed with 1.0 M HCl (>95 %). Among three kinetic models, the pseudo-second-order kinetic model provides the best correlation for the process. The nonlinear resolution of the Langmuir isotherm equation has been found to show the closest fit to the equilibrium data. The results indicates that the presence of the competitor ions (Al, Ba, Co, Mn, Mg, and Ni) has no obvious influence on the sorption of Cu(II) ion under the optimum conditions and the polymeric sorbent has a good selectivity for the sorption of Cu(II) ions with a sorption percent of ≥99 %. Sorption/desorption studies were performed for ultrapure, tap, bottled drinking and industrial wastewater samples, and it is examined that the proposed method has been successfully applied to the real samples for the removal of Cu(II) acceptable accuracy and precision. The results of this work indicated that the polymeric sorbent could be a simple and suitable method for the effective removal of Cu(II) ions from waters.

Poly(N-cyclohexylacrylamide-co-divinylbenzene-co-N-vinylimidazole) for the Removal of Tartrazine from Commercial Beverages

“…The present research employed the most commonly utilized isotherm models, viz., Langmuir, D-R, and Freundlich in elucidating the adsorption phenomenon (Figure b–d). The mathematical expressions pertaining to these models are illustrated in Table . The findings demonstrated that, in comparison to the Freundlich and D-R models, the Langmuir model provided a better fitting ( R 2 = 0.9993).…”

“…The adsorption isotherms play a key role in describing how the adsorbent will interact with the adsorbate and providing insight into adsorption capacity. − Their significance lies in understanding of the process of adsorption. Thus, the relationship between the adsorption capacity and the equilibrium concentration of TA on the polymer was illustrated by the adsorption isotherms.…”

“…The mathematical expressions pertaining to these models are illustrated in Table 2. 43 As can be seen from the table, the correlation coefficient (R 2 ) of the PSO model is higher than 0.99, indicating that the PSO model approximates the adsorption process more closely than the PFO and ID models. Moreover, the experimental adsorption capacity evaluated in the study (436.3 mg g −1 ) and the adsorption capacity computed by the PSO (416.7 mg g −1 ) model fit very well, demonstrating the superiority of the PSO model compared to other models.…”

“…The mathematical expressions pertaining to these models are illustrated in Table 1. 43 The findings demonstrated that, in comparison to the Freundlich and D-R models, the Langmuir model provided a better fitting (R 2 = 0.9993). Additionally, it was discovered that the polymer had a Langmuir equilibrium adsorption capacity of (434.8 mg g −1 ), exhibiting better compatibility with the experimental equilibrium adsorption capacity of 436.3 mg g −1 .…”

The Use of Acrylic-Based Polymers in Environmental Remediation Studies

“…The developed method was also applied to the determination of Hg(II) and Cu(II) in water samples. According to the obtained results, the polymeric adsorbent was proposed as a promising adsorbent for the removal of target ions in contaminated water [39,40].…”