Investigation of sorption capacity of pumice for SO2 capture

Öztürk, Bahtiyar; Yildirim, Yılmaz

doi:10.1016/j.psep.2007.10.010

Cited by 24 publications

(19 citation statements)

References 19 publications

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“…In the present experimental study, pumice samples as adsorbents were gathered from Ghorveh, Kurdistan, Iran. The chemical structure of this stone is presented in Table 1 (2,14,17). As Table 1 depicts, silicon and aluminum oxides comprise a major part of the utilized adsorbent, which shows the high capability of this adsorbent for absorption process as well as ion exchange.…”

Section: Adsorbent Featuresmentioning

confidence: 99%

Adsorption of Methylene Blue Dye from Aqueous Solutions by Modified Pumice Stone: Kinetics and Equilibrium Studies

et al. 2013

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Background: Dyes are one of the most important industrial pollutants, especially in textile industries. Many methods have been proposed in order to remove color from wastewater among which, adsorption is more acceptable due to the ability for its use in the large scale. Objectives: The objective of this study was to investigate pumice as an inexpensive adsorbent for removal of Methylene Blue from aqueous solutions. Materials and Methods:In this work the Modified Pumice Stone has been applied for removal of the Methylene Blue dye from aqueous environments. The effect of pH, contact time, initial concentration and amount of adsorbent were considered. In order to investigate the mechanism of the adsorption process, several kinetic models including pseudo-first order, pseudo-second order and intra-particle diffusion were used. In addition, equilibrium data was fitted on to Langmuir, Freundlich, Temkin and Dubinin-Radushkevich models. Results: Results showed that the adsorption of the Methylene Blue was enhanced with increasing initial dye concentration, pH and contact time. The optimum pH was 10. The q max for adsorption of methylene blue dye from the Langmuir model was 15.87 mg/g. Considering the values of R 2 (0.999) and χ 2 , Freundlich isotherm model and pseudo-second order kinetic model had the best fitness. Conclusions:This study has demonstrated that the modified Pumice stone with HCl can be employed as effective and inexpensive adsorbent for the removal of Methylene Blue from aqueous environments.

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Section: Adsorbent Featuresmentioning

confidence: 99%

Adsorption of Methylene Blue Dye from Aqueous Solutions by Modified Pumice Stone: Kinetics and Equilibrium Studies

et al. 2013

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“…Due to its micro porous structure, pumice has a high specifi c surface area and low apparent density (0.35-0.65 g/cm 3 ) in aggregate form. Recently, many researchers used pumice for removal of cadmium (Panuccio et al 2009), heavy metals (Moraci and Calabrò 2010), sulfur dioxide (Ozturk and Yildirim 2008) and disinfection by-products (Bekaroglu et al 2010). However, based on our knowledge, it is seldom reported that the pumice stone is used in removal of NH 4 + ion.…”

Section: Introductionmentioning

confidence: 99%

Response surface methodology (RSM) and its application for optimization of ammonium ions removal from aqueous solutions by pumice as a natural and low cost adsorbent

Moradi¹,

Fazlzadeh²,

Pirsaheb³

et al. 2016

Archives of Environmental Protection

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This research was conducted to study the adsorption of ammonium ions onto pumice as a natural and low-cost adsorbent. The physico-chemical properties of the pumice granular were characterized by X-ray diffraction (XRD), Fourier transforms infrared spectroscopy (FTIR) and scanning electron microscopy (SEM). Modeling and optimization of a NH 4 + sorption process was accomplished by varying four independent parameters (pumice dosage, initial ammonium ion concentration, mixing rate and contact time) using a central composite design (CCD) under response surface methodology (RSM). The optimum conditions for maximum removal of NH 4 + (70.3%) were found to be 100 g, 20 mg/l, 300 rpm and 180 min, for pumice dosage, initial NH 4 + ion concentration, mixing rate and contact time. It was found that the NH 4 + adsorption on the pumice granular was dependent on adsorbent dosage and initial ammonium ion concentration. NH 4 + was increased due to decrease the initial concentration of NH 4 and increase the contact time, mixing rate and amount of adsorbent.

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“…1. Recently, many researchers have used pumice for removal of grease and fats [26], natural organic matter [27], phosphorus [28] and sulphur dioxide [29].…”

Section: Page 6 Of 37mentioning

confidence: 99%

Removal of noxious dye—Acid Orange 7 from aqueous solution using natural pumice and Fe-coated pumice stone

Heibati

Rodríguez‐Couto

Turan

et al. 2015

Journal of Industrial and Engineering Chemistry

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Investigation of sorption capacity of pumice for SO2 capture

Cited by 24 publications

References 19 publications

Adsorption of Methylene Blue Dye from Aqueous Solutions by Modified Pumice Stone: Kinetics and Equilibrium Studies

Adsorption of Methylene Blue Dye from Aqueous Solutions by Modified Pumice Stone: Kinetics and Equilibrium Studies

Response surface methodology (RSM) and its application for optimization of ammonium ions removal from aqueous solutions by pumice as a natural and low cost adsorbent

Removal of noxious dye—Acid Orange 7 from aqueous solution using natural pumice and Fe-coated pumice stone

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