Effect of resin charged functional group, porosity, and chemical matrix on the long-term pharmaceutical removal mechanism by conventional ion exchange resins

Wang, Jiaqiang; Li, Xiaofeng; Yuan, Shiwen; Sun, Jin; Zheng, Shuilin

doi:10.1016/j.chemosphere.2016.06.073

Cited by 32 publications

(11 citation statements)

References 40 publications

(66 reference statements)

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“…By solid addition method, the CoFe2O4@CMC/HZSM-5 point of zero charge (pHpzc) was evaluated. At first, 10 different pH (2)(3)(4)(5)(6)(7)(8)(9)(10)(11) values, 100 mL of KCl solution (0.1 mol/L) was prepared. Then, 0.01 g of the magnetic nanobiocomposite was added to each solution.…”

Section: Adsorption Methodsmentioning

confidence: 99%

“…Removal of complex organic compounds such as antibiotics from water resources with conventional filtration methods due to their sustainability in the environment and nonbiodegradable structure is so difficult. Purification processes including ion exchange [6], membrane filtration [7], solvent extraction [8], electrochemical methods [9], chemical precipitation [10], biological methods [11], electrochemical oxidation [12], catalytic [13,14] and fenton oxidation [15,16] are used for water treatment.…”

Section: Introductionmentioning

confidence: 99%

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Preparation of CoFe2O4@Carboxymethylcellulose/HZSM-5 as a Novel Nano Magnetic Adsorbent for Metronidazole Removal: Isotherm, Kinetic and Thermodynamic Study

Nasiri

Heidari

Javid

et al. 2021

Preprint

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In this research CoFe2O4@CMC/ HZSM-5 synthesized in the presence of Carboxymethylcellulose as a biopolymer in the green conditions as a new nanomagnetic adsorbent for metronidazole removal from aqueous media. Physical and chemical structure of adsorbent was investigated by FTIR, FESEM, EDS, Mapping, TEM, XRD, VSM, BET and TGA techniques. The results indicated that 94% of the metronidazole concentration removed by CoFe2O4@CMC/HZSM-5 in the optimal conditions including pH 6, temperature 20oC, metronidazole concentration 50 mg/L, contact time 60 min and adsorbent dose 2 g/L. The resulting data from adsorption experimental experiments had better correlated with the Freundlich isotherm and pseudo-second order kinetic. Also, the thermodynamic study demonstrated that the adsorption process was an endothermic process and had a physical mechanism. As well as, the achieved findings demonstrated that following six adsorption runs, the adsorbent chemical structure had no change and the nanomagnetic adsorbent efficiency in the removal process had a slight decrease. CoFe2O4@CMC/HZSM-5 magnetic nanocomposite had effective adsorption capacity for metronidazole removal.

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Section: Adsorption Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Preparation of CoFe2O4@Carboxymethylcellulose/HZSM-5 as a Novel Nano Magnetic Adsorbent for Metronidazole Removal: Isotherm, Kinetic and Thermodynamic Study

Nasiri

Heidari

Javid

et al. 2021

Preprint

View full text Add to dashboard Cite

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“…The lower adsorption affinity of naproxen compared to CBZ can be explained by the dissociation of the acidic naproxen at experimental pH. If naproxen Log K ow is recalculated according to Equation (23) for acid compounds so that modified Naproxen Log K ow becomes lower than CBZ Log K ow , its lower affinity to the activated carbons concerning CBZ becomes evident.…”

Section: Effect Of the Log K Owmentioning

confidence: 99%

“…In the literature, different technologies for CBZ removal from contaminated water are reported [4,[11][12][13]. These technologies are mainly based on electrochemical oxidation [14,15], solar photolysis [16,17], photocatalysis [18][19][20], osmotic membrane separation [12,21], ion exchange [22,23], persulfate oxidation [24], ultrasound/persulfate anions oxidation [25], dielectric barrier discharge process [26,27] and ozone/ultraviolet/hydrogen peroxide advanced oxidation [28,29]. Among them, adsorption is the most used technology for its high efficiency and lower operating costs [30][31][32]; the first quantitative experiments about this technology involved the study of gas adsorption on charcoal (which was later called "activated carbon") and clay [33].…”

Section: Introductionmentioning

confidence: 99%

A Review on the Removal of Carbamazepine from Aqueous Solution by Using Activated Carbon and Biochar

et al. 2021

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Carbamazepine (CBZ), one of the most used pharmaceuticals worldwide and a Contaminant of Emerging Concern, represents a potential risk for the environment and human health. Wastewater treatment plants (WWTPs) are a significant source of CBZ to the environment, polluting the whole water cycle. In this review, the CBZ presence and fate in the urban water cycle are addressed, with a focus on adsorption as a possible solution for its removal. Specifically, the scientific literature on CBZ removal by activated carbon and its possible substitute Biochar, is comprehensively scanned and summed up, in view of increasing the circularity in water treatments. CBZ adsorption onto activated carbon and biochar is analyzed considering several aspects, such as physicochemical characteristics of the adsorbents, operational conditions of the adsorption processes and adsorption kinetics and isotherms models. WWTPs usually show almost no removal of CBZ (even negative), whereas removal is witnessed in drinking water treatment plants through advanced treatments (even >90%). Among these, adsorption is considered one of the preferable methods, being economical and easier to operate. Adsorption capacity of CBZ is influenced by the characteristics of the adsorbent precursors, pyrolysis temperature and modification or activation processes. Among operational conditions, pH shows low influence on the process, as CBZ has no charge in most pH ranges. Differently, increasing temperature and rotational speed favor the adsorption of CBZ. The presence of other micro-contaminants and organic matter decreases the CBZ adsorption due to competition effects. These results, however, concern mainly laboratory-scale studies, hence, full-scale investigations are recommended to take into account the complexity of the real conditions.

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“…The porous characteristic is a set of data whose knowledge is important in understanding the formation, structure, and potential use of polymeric composite materials Wang et al 2015;Wang et al 2016;Tan et al 2018). In the 2000s as nanotechnology developed, a group of adsorbents called hybrid ion exchangers (HIXs) appeared.…”

Section: Introductionmentioning

confidence: 99%

Anomalous effect of Cu2O and CuO deposit on the porosity of a macroreticular anion exchanger

et al. 2021

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When synthesizing copper compounds containing polymeric adsorbents, it was found that the two copper oxides, Cu2O and CuO, deposited in the skeleton of a strongly basic macroreticular anion exchanger (An) radically diminished the porosity of the obtained composites in relation to the host material. In order to investigate this phenomenon more closely, An/Cu2O and An/CuO (both based on the commercial anion exchanger Amberlite IRA900Cl), containing 8.6 and 8.2 wt% Cu, respectively, were subjected to scrutiny. The porous characteristics of the thermally dried and freeze-dried samples were determined using the N2 adsorption–desorption method and mercury intrusion porosimetry. The thermally dried samples lost their porosity and increased their bulk density in relation to the pure resin indicated a significant reduction in their volume. It was found that during drying, the grains shrank as much as the pores collapsed. The decay of the porous structure resulted from the surface morphology of the Cu2O and CuO particles and their tendency to agglomerate. Both freeze-dried samples retained the porous characteristics typical for macroporous anion exchangers. In contrast to the most popular hybrid ion exchangers containing hydrated polyvalent metal oxides (such FeOOH), An/Cu2O and An/CuO showed markedly strong volume contraction effect in relation to moisture content. Graphical abstract

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Effect of resin charged functional group, porosity, and chemical matrix on the long-term pharmaceutical removal mechanism by conventional ion exchange resins

Cited by 32 publications

References 40 publications

Preparation of CoFe2O4@Carboxymethylcellulose/HZSM-5 as a Novel Nano Magnetic Adsorbent for Metronidazole Removal: Isotherm, Kinetic and Thermodynamic Study

Preparation of CoFe2O4@Carboxymethylcellulose/HZSM-5 as a Novel Nano Magnetic Adsorbent for Metronidazole Removal: Isotherm, Kinetic and Thermodynamic Study

A Review on the Removal of Carbamazepine from Aqueous Solution by Using Activated Carbon and Biochar

Anomalous effect of Cu2O and CuO deposit on the porosity of a macroreticular anion exchanger

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