Removal of emerging contaminants from water by zeolite-rich composites: A first approach aiming at diclofenac and ketoprofen

Smiljanić, Danijela; Gennaro, Bruno de; Izzo, Francesco; Langella, Alessio; Daković, Aleksandra; Germinario, Chiara; Rottinghaus, George E.; Spasojević, M.; Mercurio, Mariano

doi:10.1016/j.micromeso.2020.110057

Cited by 63 publications

(50 citation statements)

References 73 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…This indicates a fair stability of the surfactant zeolite system both in the case of patchy and complete bilayer formation. Moreover, already in previous works [37], it was pointed out that a loss in surfactant could occur in extreme stirring or washing conditions-a situation not applied in this research.…”

Section: (%) Phi (%)mentioning

confidence: 95%

“…On this basis, the aim of the present research is to verify a possible use of two natural zeolitesa phillipsite-rich tuff (PHI) from Marano (Naples, Italy) and a clinoptilolite-rich tuff (CLI) from Eskişehir (Turkey)-modified by exchange with cationic surfactants HDTMA bromide and HDTMA chloride, as alternative adsorbents for removing arsenate from water solutions. Recently, natural zeolites, particularly clinoptilolite, modified with cationic surfactant, were used to remove different types of contaminants from water: nitrates [9], chromates [33,34], cesium, lead, zinc [34], perchloroethylene [35], sulfates [36], NSAIDs [37] and antibiotics [38].…”

Section: Of 20mentioning

confidence: 99%

See 1 more Smart Citation

Zeolite-Rich Composite Materials for Environmental Remediation: Arsenic Removal from Water

et al. 2020

Self Cite

View full text Add to dashboard Cite

Natural zeolites are used as adsorbents in purification processes due to their cation-exchange ability and molecular sieve properties. Surface modified natural zeolites (SMNZs), produced by attaching cationic organic surfactants to the external surface, can simultaneously act as ionic exchangers and organic molecule adsorbents. In this paper, SMNZs were produced and investigated as adsorbents for As(V) removal from wastewater: two natural zeolites, clinoptilolite and phillipsite, were modified using HDTMA-Br and HDTMA-Cl as surfactants. The obtained samples were then characterized under static and dynamic conditions. Results showed that As(V) removal follows a pseudo-second order kinetic, with fast adsorption rates: every sample reached 100 % removal in 2 h, while equilibrium data showed a Langmuir-like behavior, with a greater anion uptake by the HDTMA-Br modified SMNZs due to the formation of a compact and complete micellar structure. Finally, fixed-bed tests were performed to characterize the samples under dynamic conditions assessing the effect of severe operating parameters on the dynamic exchange capacity, selectivity and efficiency of the process. The obtained results demonstrate a good ability of the tested materials to adsorb As(V) from wastewater, confirming the effectiveness of the proposed surface modification technique in expanding the possibility of using natural zeolites in these processes.

show abstract

Section: (%) Phi (%)mentioning

confidence: 95%

Section: Of 20mentioning

confidence: 99%

Zeolite-Rich Composite Materials for Environmental Remediation: Arsenic Removal from Water

et al. 2020

Self Cite

View full text Add to dashboard Cite

show abstract

“…The FTIR characterization confirmed the presence of the surfactant molecules on the structure of raw zeolitic tuff. New peaks in SMZ occur at 2920 cm −1 and 2850 cm −1 and those peaks may result from the alkyl groups of HDTMA on the RZT surface during the modification, also the peaks are attributed to symmetric and asymmetric stretching vibrations of C-C in the alkyl chain and their intensities are reflections of the HDTMA loading [22,27]. It is suggested that the benzene ring and the alkyl groups at CBZ play a major role in CBZ sorption, which further supported the electrostatic interaction between CBZ and positively charged SMZ surfaces.…”

Section: Ftir Spectroscopymentioning

confidence: 99%

“…While CBZ removal by SMZ has been studied using spiked CBZ in ultrapure water and/or synthetic wastewater, there is little work on the CBZ removal from realistic wastewater matrix [23]. The presence of dissolved organic matter (DOM) in secondary treated wastewater is recognized as the main factor limiting the adsorption of organic micropollutants onto activated carbon and its impact on the organic micropollutants adsorption is still unclear [23][24][25][26][27]. Therefore, this knowledge is needed for the design and optimization of using SMZ in the removal of PPCPs from realistic wastewater treatment systems.…”

Section: Introductionmentioning

confidence: 99%

Removal of Carbamazepine onto Modified Zeolitic Tuff in Different Water Matrices: Batch and Continuous Flow Experiments

Al‐Mashaqbeh

Alsafadi

Alsalhi

et al. 2021

Water

View full text Add to dashboard Cite

Carbamazepine (CBZ) is the most frequently detected pharmaceutical residues in aquatic environments effluent by wastewater treatment plants. Batch and column experiments were conducted to evaluate the removal of CBZ from ultra-pure water and wastewater treatment plant (WWTP) effluent using raw zeolitic tuff (RZT) and surfactant modified zeolite (SMZ). Point zero net charge (pHpzc), X-ray diffraction (XRD), X-ray fluorescence (XRF), and Fourier Transform Infrared (FTIR) were investigated for adsorbents to evaluate the physiochemical changes resulted from the modification process using Hexadecyltrimethylammonium bromide (HDTMA-Br). XRD and FTIR showed that the surfactant modification of RZT has created an amorphous surface with new alkyl groups on the surface. The pHpzc was determined to be approximately 7.9 for RZT and SMZ. The results indicated that the CBZ uptake by SMZ is higher than RZT in all sorption tests (>8 fold). Batch results showed that the sorption capacity of RZT and SMZ in WWTP effluent (0.029 and 0.25 mg/g) is higher than RZT and SMZ (0.018 and 0.14 mg/g) in ultrapure water (1.6–1.8 fold). Batch tests showed that the equilibrium time of CBZ removal in the WWTP matrix (47 h) is much longer than CBZ removal in ultrapure water. The sorption capacity of RZT & SMZ in WWTP effluent (0.03, 0.33 mg/g) is higher than RZT and SMZ (0.02 and 0.17 mg/g) in ultrapure water (1.5–2 fold) using column test. This study has clearly demonstrated that the performance of RZT and SMZ is more efficient for the removal of CBZ from realistic wastewater than ultrapure water. It is evident that the surfactant modification of RZT has enhanced the CBZ removal in both matrices.

show abstract

“…The most commonly used are painkillers and anti-inflammatory drugs, cold and flu medications, heart medications, and vitamins and mineral dietary supplements. Among them, non-steroidal anti-inflammatory drugs (NSAIDs) are commonly used [ 2 , 3 , 4 , 5 , 6 , 7 , 8 , 9 ]. These drugs are relatively soluble in water, and as a result, they easily enter the environment from the wastewater of pharmaceutical factories, municipal wastewater from hospitals, veterinary clinics, and households.…”

Section: Introductionmentioning

confidence: 99%

Adsorption of Non-Steroidal Anti-Inflammatory Drugs on Alginate-Carbon Composites—Equilibrium and Kinetics

Wasilewska

Deryło–Marczewska

2022

Materials

View full text Add to dashboard Cite

In this work, alginate–carbon composites with different active carbon content were synthesized and studied by various techniques. The obtained materials can be used as adsorbents in the processes of removing organic pollutants from water. In this study, the effect of the immobilization of activated carbon in calcium alginate was investigated. Textural properties were determined by measuring low-temperature nitrogen adsorption/desorption isotherms. The largest specific surface area was recorded for ALG_C8 and amounted to 995 m2/g. The morphology of alginate materials was determined on the basis of scanning electron microscopy. The adsorption properties were estimated based on the measurements of equilibrium and adsorption kinetics. The highest sorption capacities were 0.381 and 0.873 mmol/g for ibuprofen and diclofenac, respectively. The generalized Langmuir isotherm was used to analyze the equilibrium data. A number of equations and kinetic models were used to describe the adsorption rate data, including first (FOE) and second (SOE) order kinetic equations, 1,2-mixed-order kinetic equation (MOE), fractal-like MOE equation (f-MOE), multi-exponential equation (m-exp), in addition to diffusion models: intraparticle diffusion model (IDM) and pore diffusion model (PDM). Thermal stability was determined on the basis of data from thermal analysis in an atmosphere of synthetic air.

show abstract

Removal of emerging contaminants from water by zeolite-rich composites: A first approach aiming at diclofenac and ketoprofen

Cited by 63 publications

References 73 publications

Zeolite-Rich Composite Materials for Environmental Remediation: Arsenic Removal from Water

Zeolite-Rich Composite Materials for Environmental Remediation: Arsenic Removal from Water

Removal of Carbamazepine onto Modified Zeolitic Tuff in Different Water Matrices: Batch and Continuous Flow Experiments

Adsorption of Non-Steroidal Anti-Inflammatory Drugs on Alginate-Carbon Composites—Equilibrium and Kinetics

Contact Info

Product

Resources

About