Copper Adsorption and Si, Al, Ca, Mg, and Na Release from Clinoptilolite

Doula, M.; Ioannou, A.; Dimirkou, A.

doi:10.1006/jcis.2001.7961

Cited by 88 publications

(44 citation statements)

References 17 publications

(22 reference statements)

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“…It was reported that dissolution of Si was related to the decrease in ionic strength and increase in the pH of the solution. Additionally Al dissolution was reported to be increased with the increase in ionic strength but also it decreased with the decrease in solution pH [26]. Therefore ionic strength and pH might be effective on slight dissolution of Si.…”

Section: Characterization Resultsmentioning

confidence: 98%

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Investigation of structural properties of clinoptilolite rich zeolites in simulated digestion conditions and their cytotoxicity against Caco-2 cells in vitro

Kavak

Ülkü

2012

J Porous Mater

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The use of the clinoptilolite rich natural zeolites in biomedical applications such as in anticancer therapy, drug or drug support systems and as nutritive supplement is highly dependent on their behavior in digestive conditions. Aim of this study is to investigate structural stability of clinoptilolite rich natural zeolites in simulated digestion conditions and their interactions with digestive media and with Caco-2 (human colon adenocarcinoma) cells. X-ray Diffraction (XRD), Fourier Transform InfraRed (FTIR), Scanning Electron Microscopy (SEM) and Inductively Coupled Plasma Atomic Emission Spectroscopy (ICP-AES) analyses of the clinoptilolite rich zeolite samples showed that zeolites preserved their structural stabilities during in vitro digestion. Slight interactions were detected in UV measurements of the digestive liquid media and FTIR spectra of the intestinal digested media powders. SEM results implied that zeolites might have a role in the aggregation of the digestive enzymes. Cytotoxicity test using colon cancer cells showed that clinoptilolite rich natural zeolites have cytotoxic effect against Caco-2 cells and cytotoxicity did not significantly change with respect to simulated digestion process.

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Section: Characterization Resultsmentioning

confidence: 98%

“…The active sites on zeolite surface are Si-OH and Al-OH groups. In acidic to neutral pH range, protonation of negative and neutral surface hydroxyl groups were reported [26]:…”

Section: Mtt Cell Proliferation Assaymentioning

confidence: 99%

Investigation of structural properties of clinoptilolite rich zeolites in simulated digestion conditions and their cytotoxicity against Caco-2 cells in vitro

Kavak

Ülkü

2012

J Porous Mater

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“…It has been shown that the use of pozzolanic additives for cements increases their resistance to corrosion, due to the high impermeability, the decrease in the content of Ca(OH) 2 , and the reduction in the presence of capillary pores in the matrix. In fact, it hinders the penetration of aggressive media [53].…”

Section: Sulfate and Acid Attack Resistancementioning

confidence: 99%

“…Direct methods monitor the presence of Ca(OH) 2 and its subsequent reduction in abundance over time, as the pozzolanic reaction proceeds, using analytical methods such as X-ray diffraction (XRD), thermogravimetric analysis (TGA), or assessment chemistry.…”

Section: Introductionmentioning

confidence: 99%

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Characterizations and Industrial Applications for Cement and Concrete Incorporated Natural Zeolite

Domínguez¹,

Abdellaoui²,

Abatal³

et al. 2018

Zeolites and Their Applications

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Zeolites have been widely used in various industries, leading to a high commercial value; this is mainly due to the wide diversity of naturally occurring species and the ability to synthesize new types. In the cement and concrete industry, natural zeolite is a popular natural pozzolanic material in some regions of the world owing to their economic, environmental, and technical advantages, among others, used pozzolanic materials. Many works have reported the use of natural zeolite as substituent material for cement in mortar and concrete. Generally, the use of natural zeolite can overcome environmental and economic problems associated with the use of high quantity of cement; furthermore, it is shown a strength enhancement and durability improvement properties of cement and concrete composites. In this context, this chapter strives to review the application of natural zeolite as pozzolan in cement and concrete composites, its characteristic, its proper incorporation, and each of the influencing parameters. In addition, the elaboration methods, textural and mechanical characterization, and applications of these composites will be treated.

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Elimination of Zinc from Roof Runoff through Geotextile and Clinoptilolite Filters

Athanasiadis

Wilderer

2004

Acta hydrochim. hydrobiol.

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a Geotextile and Clinoptilolite Filtersa Lehrstuhl für Wassergüte-und Direct infiltration of roof runoff into the ground may pose a potential risk of soil and groundAbfallwirtschaft, Technische water contamination. The performance of two different barrier materials for the retention Universität München, of zinc from roof runoff of an eleven year old zinc roof was examined in a field study. As Am Coulombwall, 85748 Garching, Germany barrier materials geotextile and clinoptilolite were applied. Automatic samplers were used to take samples both at the inlet and at the outlet of the retention facility. Samples of twenty rain events were examined. Zinc was detected in the roof runoff in concentrations of up to 25 mg/L, and lead which originates from the tin-solder was present in concentrations of up to 84 µg/L. Under most circumstances, a first flush could be observed for the analysed substances. No retention of heavy metals was observed, where only geotextile was used as a barrier material. The clinoptilolite filter was able to adsorb up to 97 % of zinc from the roof runoff. Elimination von Schadstoffen aus Abläufen eines Zinkdaches bei der Regenwasserversickerung

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Copper Adsorption and Si, Al, Ca, Mg, and Na Release from Clinoptilolite

Cited by 88 publications

References 17 publications

Investigation of structural properties of clinoptilolite rich zeolites in simulated digestion conditions and their cytotoxicity against Caco-2 cells in vitro

Investigation of structural properties of clinoptilolite rich zeolites in simulated digestion conditions and their cytotoxicity against Caco-2 cells in vitro

Characterizations and Industrial Applications for Cement and Concrete Incorporated Natural Zeolite

Elimination of Zinc from Roof Runoff through Geotextile and Clinoptilolite Filters

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