Purification of metal electroplating waste waters using zeolites

Álvarez‐Ayuso, E.; García-Sánchez, Antonio-Javier; Querol, Xavier

doi:10.1016/j.watres.2003.08.009

Cited by 463 publications

(209 citation statements)

References 30 publications

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“…Use of natural and synthetic zeolites including mordenite for the sorption of metal ions has been shown by many researchers [16][17][18]. In the present study, the initial experiment was planned to reveal the change in the percent sorption of the transition metal ions on mordenite versus the pH of the solution.…”

Section: Sorption Studies 321 Sorption Of Transition Metal Ionsmentioning

confidence: 99%

Separation of trace antimony and arsenic prior to hydride generation atomic absorption spectrometric determination

Yersel

Erdem

Eroğlu

et al. 2005

Analytica Chimica Acta

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A separation method utilizing a synthetic zeolite (mordenite) was developed in order to eliminate the gas phase interference of Sb(III) on As(III) during quartz furnace hydride generation atomic absorption spectrometric (HGAAS) determination. The efficiency of the proposed separation method in the reduction of suppression effects of transition metal ions on As(III) signal was also investigated. Among the volatile hydride-forming elements and their different oxidation states tested (Sb(III), Sb(V), Se(IV), Se(VI), Te(IV), and Te(VI)), only Sb(III) was found to have a signal depression effect even at low (g l −1 ) concentrations under the experimental conditions employed. It has been shown that mordenite adsorbs Sb(III) quantitatively, even at a concentration of 1000 g l −1 , at pHs greater than two, and also, it reduces the initial concentrations of the transition metal ions to lower levels which can be tolerated in many studies. The adsorption of Sb(III) on mordenite follows the Freundlich isotherm and is endothermic in nature.

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Section: Sorption Studies 321 Sorption Of Transition Metal Ionsmentioning

confidence: 99%

Separation of trace antimony and arsenic prior to hydride generation atomic absorption spectrometric determination

Yersel

Erdem

Eroğlu

et al. 2005

Analytica Chimica Acta

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“…Bu zeolitler arasında en yaygın olarak kullanılan zeolit grubu Klinoptilolittir. Klinoptilolitin kristal sistemi monokliniktir ve ısıya dayanıklıdır [25]. Klinoptilolit 700C'ye kadar kristal yapısını korur.…”

Section: Klinoptilolitunclassified

Türki̇ye'deki̇ Doğal Zeoli̇tler Ve İyon Değişi̇mi̇ Uygulamalari

Soylu¹,

Gökkuş²

2017

Ömer Halisdemir Üniversitesi Mühendislik Bilimleri Dergisi

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ÖZSu ve atıksu arıtımında iyon değişimi prosesi özellikle ağır metallerin ve sertlik yaratıcı unsurların giderimi için kullanılmaktadır. İyon değişimi prosesinde genellikle sentetik olarak üretilen polimerik reçineler kullanılmaktadır. Böylelikle su ve atıksularda bulunan inorganik kirleticiler reçinenin yapısında bulunan fonksiyonel gruplara bağlanarak uzaklaştırılabilmektedir. Ancak kullanılan sentetik iyon değiştiricilerin maliyetleri bu yöntemin kullanımını sınırlandırmaktadır. Diğer taraftan iyon değişim prosesinde sentetik zeolitlere alternatif olarak görülen doğal zeolitler ise atıksu arıtımı uygulamalarındaki performansı açısından sentetik reçinelerin gerisinde kalsa da maliyet yönüyle dezavantajlarını telafi etmektedirler. Doğal iyon değiştirici zeolit minerallerinin kaynakları açısından oldukça zengin olan ülkemizde iyon değişim uygulamalarının yaygınlaşması ekonomi ve erişilebilirlik anlamında oldukça önemli avantajlar sağlayacaktır. Bu çalışma kapsamında iyon değişimi uygulamalarında en sık rastlanan zeolit türleri incelenmiş ve bu zeolit türlerine ait su ve atıksu arıtımı uygulamalarından örnekler verilmiştir.Anahtar kelimeler: İyon değişimi, atıksu arıtımı, zeolit NATURAL ZEOLITES IN TURKEY AND ITS APPLICATIONS ABSTRACTIn water and wastewater treatment, ion exchange process is especially used to remove heavy metals and elements leading to hardness. In general, polymeric resins produced synthetically are used in ion exchange process. In that way, inorganic contaminants in water and wastewater can be removed by binding to functional groups present in the resin structure. However, the cost of the synthetic ion exchangers, limits the wide range of application of the method. On the other hand, even if natural zeolites, seen as an alternative to the synthetic resins, are fall behind the synthetic resins in terms of the performance in the wastewater treatment applications, they compensate the disadvantage with their low cost. Proliferation of the ion exchange applications in Turkey, rich in resources of the natural ion exchanger zeolite minerals, will provide significant advantages in terms of economy and accessibility. In the scope of the study, the most common zeolite types, used in ion exchange applications, are investigated and some examples are given related to its applications in water and wastewater applications.

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“…Thus, there is a hunger need for a cost effective method for removal of cadmium from water. There are many methods available in literature for removal of heavy metals from aqueous samples [28][29][30][31][32][33][34][35][36][37][38][39] . However; complete elimination of heavy metals at very low concentrations through these is not possible; are expensive as these require advanced equipment and high energy.…”

Section: In Removal Of Cadmium: As Filtermentioning

confidence: 99%

Cadmium Ion Sensing Paptode Based On Digital RGB Color Analysis

Sharma¹

2012

IOSJPBS

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Purification of metal electroplating waste waters using zeolites

Cited by 463 publications

References 30 publications

Separation of trace antimony and arsenic prior to hydride generation atomic absorption spectrometric determination

Separation of trace antimony and arsenic prior to hydride generation atomic absorption spectrometric determination

Türki̇ye'deki̇ Doğal Zeoli̇tler Ve İyon Değişi̇mi̇ Uygulamalari

Cadmium Ion Sensing Paptode Based On Digital RGB Color Analysis

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