Enhanced interlayer trapping of Pb(II) ions within kaolinite layers: intercalation, characterization, and sorption studies

Maged, Ali; Ismael, Ismael Sayed; Kharbish, Sherif; Sarkar, Binoy; Peräniemi, Sirpa; Bhatnagar, Amit

doi:10.1007/s11356-019-06845-w

Cited by 37 publications

(17 citation statements)

References 72 publications

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“…Therefore, the adsorbate molecule passed through AAB inside the column before the equilibrium state was reached, which led to incomplete use of the adsorbent´s full capacity (Daneshvar et al 2019). In contrast, utilizing lowest flow rate provides sufficient residence time to the CIP molecule to be in contact with the adsorbent in continuous sorption system (Maged et al 2019). These findings are in agreement with a previous study of TC sorption from water using Fe/graphene (Alatalo et al 2019).…”

Section: Effect Of Flow Ratementioning

confidence: 99%

Characterization of activated bentonite clay mineral and the mechanisms underlying its sorption for ciprofloxacin from aqueous solution

Maged

Kharbish

Ismael

et al. 2020

Environ Sci Pollut Res

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The presence of emerging pollutants such as hazardous chemicals, pharmaceuticals, pesticides, and endocrine-disrupting chemicals in water sources is a serious concern to the environment and human health. Thus, this study focused on exploring the interaction mechanisms between ciprofloxacin (CIP) (antibiotic) and clay (a low-cost adsorbent) during sorption process. Acid activation technique was opted for modifying natural bentonite (NB) to enhance the adsorptive removal of CIP from water. The BET surface area analysis revealed that acid-activated bentonite (AAB) possessed more than two fold higher surface area as compared to NB. Combining pH zpc measurements, effect of solution pH and CIP speciation revealed that CIP sorption onto bentonite is highly dependent on solution pH. Kinetic studies confirmed that CIP sorption mechanism was chemisorption which included ion-exchange and surface complexation mechanisms. The mechanism of CIP sorption onto AAB was successfully explored with the assistance of characterization techniques. Maximal monolayer sorption capacity of AAB was found to be 305.20 mg/g, compared to 126.56 mg/g for NB. Reusability studies demonstrated that AAB could be reused successfully up to 5 cycles. Furthermore, column studies showed satisfactory results confirming that AAB can be successfully used in continuous mode for practical applications. Electronic supplementary material The online version of this article (10.1007/s11356-020-09267-1) contains supplementary material, which is available to authorized users.

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Section: Effect Of Flow Ratementioning

confidence: 99%

Characterization of activated bentonite clay mineral and the mechanisms underlying its sorption for ciprofloxacin from aqueous solution

Maged

Kharbish

Ismael

et al. 2020

Environ Sci Pollut Res

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“…SPS membranes presented a narrow peak indicated pores size is homogeneous as shown in Figure 2. This can be explained by the broader channel for diffusion and more available active sites for interaction which could improve adsorption amount [29]. However, SPS membranes were involved with high temperatures during sample preparation, leading to loss of adsorption agent due to the collapse of kaolinite structures that changed to other phases based on Eq.…”

Section: Resultsmentioning

confidence: 99%

Sayong Ball Clay Membrane for Copper and Nickel Removal from Effluent

Zaidan

Ahmad

Nakamura

et al. 2021

ARFMTS

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An adsorption filtration mechanism using porous ceramic membranes was proposed for the removal of heavy metals from the effluent of the UTM Lake. The effectiveness of the removal depends on kaolinite microparticle which is used as an adsorption agent in ceramic membranes. In this work, Sayong ball clay (SBC) from Malaysia was used in the preparation of the ceramic membrane. Sayong ball clay membranes were fabricated by gel casting (GC) and spark plasma sintering (SPS) methods. The effect of kaolinite and pore size on copper and nickel removal was investigated. X-ray fluorescence (XRF), X-ray diffraction (XRD), mercury porosimetry, and adsorption analysis were used to relate with the adsorption performance. It is found that kaolinite with the 14:1 ratio of monomers in the GC-SBC membrane performed the highest heavy metal removal.

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“…The amount of adsorbed ions per unit weight of slag, q (mg/g), is determined from the following relation (Maged et al 2020 ): …”

Section: Methodsmentioning

confidence: 99%

From waste to waste: iron blast furnace slag for heavy metal ions removal from aqueous system

Abdelbasir

Khalek

2022

Environ Sci Pollut Res

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Inordinate levels of heavy metals in water sources have long been a matter of concern, posing serious environmental and public health risks. Adsorption, on the other hand, is a viable technique for removing heavy metals from water due to its high efficiency, low cost, and ease of operation. Blast furnace slag (BFS) is considered a cheap sorbent for the get rid of Co2+ and Pb2+ ions from aqueous media. The nonmodified slag is characterized using X-ray diffraction (XRD), X-ray fluorescence (XRF), N2 adsorption–desorption isotherms, energy dispersive X-ray analysis (EDX), scanning electron microscopy (SEM), and zeta potential. The removal of Co2+ and Pb2+ ions was carried out using batch adsorption experiments from an aqueous medium. The influence of several variables as pH, contact time, adsorbent dose, temperature, and initial ions concentration was considered. The isotherm, kinetic, thermodynamic, and recyclability were also conducted. The maximum uptake capacity for Co2+ and Pb2+ was 43.8 and 30.2 mg g−1 achieved at pH 6 after 60 min contact time. The adsorption kinetics and isotherms of BFS for Co2+ and Pb2+ fitted well to Avrami and Freundlich models, respectively. The main adsorption mechanism between BFS and the metal ions was ion exchange. The regeneration of the used slag was studied for reuse many cycles. In terms of economics and scalability, nonmodified BFS treatment has great potential as a cost-effective adsorbent that could be used in water pollution treatment. Graphical abstract

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Enhanced interlayer trapping of Pb(II) ions within kaolinite layers: intercalation, characterization, and sorption studies

Cited by 37 publications

References 72 publications

Characterization of activated bentonite clay mineral and the mechanisms underlying its sorption for ciprofloxacin from aqueous solution

Characterization of activated bentonite clay mineral and the mechanisms underlying its sorption for ciprofloxacin from aqueous solution

Sayong Ball Clay Membrane for Copper and Nickel Removal from Effluent

From waste to waste: iron blast furnace slag for heavy metal ions removal from aqueous system

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