Interaction of Aqueous Solution of Phenol With 5a Zeolite: Adsorption and Comparison With Commercial Carbons as Adsorbents

Levi, Zora; Škundrić, Jelena Penavin; Sladojević, Slavica; Lazić, Dragica; Bodroža, Darko

doi:10.7251/comen1202201l

Cited by 4 publications

(3 citation statements)

References 5 publications

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“…The surface electric charge and capacity of ion exchange are directly connected to the active centers that are placed on the sides of the crystal structure, on the basal plains or within the pores. The process of modification with organic surface active matters (SAA) results in a partial neutralization of negative electric charge and it is expected for the obtained organic material to have a bigger efficacy of adsorption of the components from water and air [11,12]. Alumina (Milici and Siroki Brijeg) is modified by the anion and cation SAA.…”

Section: Figure 5 Freundlich Adsorption Isotherms Of Nitrogen (At 76k) On the Synthesized Aluminamentioning

confidence: 99%

Adsorption on Alumina of Different Origin

Škundrić¹,

Lazić

Dobrnjac³

et al. 2016

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The adsorbent used in the study was the alumina obtained from the bauxite found in the locality of Milici, Siroki Brijeg and alumina synthesized in the laboratory and obtained by sedimentation from the solution of aluminium nitrate and concentrated ammonia along with controlling pH solution in the course of sedimentation. The obtained sediment of alumina was annealed for 4 hours at 273 K. The adsorbates were triphenylmethane dyes, carboxylic acids – acetic and lauric one and aqueous solution of ammonia. Alumina was modified by the surface active agents (SAA), cation-active SAA, triethanolamine-di-estermethylsulfate called Propagen, and anion-active SAA, Na-salt alkyldiglycoethersulfate called Genapol. The textural characteristics of adsorbents were determined by the adsorption of nitrogen from the gas phase at the temperature of liquid nitrogen, and the results of the adsorption of acid and base adsorbates gave an insight in the changes, i.e. characteristics of surface active centers on which the adsorption takes place.

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Section: Figure 5 Freundlich Adsorption Isotherms Of Nitrogen (At 76k) On the Synthesized Aluminamentioning

confidence: 99%

Adsorption on Alumina of Different Origin

Škundrić¹,

Lazić

Dobrnjac³

et al. 2016

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“…Because of that, the adsorbates selected in this study are organic acid species, EDTA and H 2 C 2 O 4 , which can get into waste waters of the textile industry, cellulose and paper industry, food industry, production of cosmetic and pharmaceutical products, etc. Nowadays more attention is paid to purification of waste waters by using old and designing new methods for removal of harmful components that have different physicalchemical characteristics (Penavin-Skundric et al, 2012;Sladojevic et al, 2013;Skundric et al, 2004). Adsorption is one of the most frequently used methods thanks to its performance simplicity, as well as efficiency, and to the greatest extent it is determined by adsorbent characteristics, in terms of finding adsorbents of high selectivity, adsorption capacity and ecological acceptability (De Haro-Del Rio et al, 2018;Greg and Sing, 1982;Inglezakis, 2010;Penavin-Skundric et al, 2013;Sucurovic, 2017).…”

Section: Introductionmentioning

confidence: 99%

Study of adsorption of selected organic species from aqueous solution on nh4be ta zeolite

Sladojević

Penavin-Škundrić²,

Levi³

et al. 2019

GHTERS

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This study observed adsorption of selected organic species from the aqueoussolution, EDTA and H2C2O4, at 283, 293 and 303 K. The adsorbent used was syntheticzeolite NH4BETA, product of the American company Zeolyst International, with themole ratio of SiO2/Al2O3 = 25.00, for the purpose of examining its physical-chemicalcharacteristics and obtaining more thorough information on the adsorption capacityand active centers, as well as for its potential application in purificati on of wastewatersfrom the organic pollutants. Results proved that adsorption of the adsorbates, underthe same experimental conditions, was multi-layer physical, being stronger expressedwhen the adsorbate was oxalic acid, which is logical enough since its molecule is a lotsmaller and of a simpler structure compared to the big molecule of EDTA.

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“…Whereas zeolite is widely used as membrane for ion-exchanged and molecular pollutants adsorbent in water [7]. The adsorption ability of zeolite composited with TiO 2 depend on the type of organics and zeolite structure [8,9]. Since phenol is organic pollutants from different petrochemical industrial which is toxic for humans and aquatic livings even though in low concentration [10], it was been used to be the representative of waste organic compound.…”

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confidence: 99%

Forming of Zeolite/Carbon Composite Substrate Coated with Titania for Photocatalyst Decomposition of Organic Compound

Gomonsirisuk

Wasanapiarnpong

2015

KEM

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Organic contaminated wastes water from petrochemical industries can be removed by adsorbent and photocatalyst. In this work, the degradation rate of phenol have been studied at different ratios of activated carbon/NaA zeolite composite materials coated with TiO2 photocatalyst which are easily to be fabricated into tubular shape by extrusion method. In addition, the foam-inserted composite can be floated on the surface of waste water for the higher phocatalyst activity. While the composite is the low cost adsorbent with high absorption and high ion exchange properties. In order to optimize the efficiency of material, the various ratios of activated carbon/NaA zeolite (3:1, 1:1 and 1:3) and amount of coated TiO2 on the specimen’s surface was studied by UV/Vis spectrophotometer which related to phenol concentration. Moreover the various amount of phenolic resins (10, 20, 30, 40 and 50 wt%) at different reduction firing temperatures (600 and 650 °C) with soaking time of 1, 2 and 3 hours affected to the compressive strength of samples. For the characterization, XRD is used to characterize the phase and SEM is used to provide the morphology of the prepared composite materials.

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Interaction of Aqueous Solution of Phenol With 5a Zeolite: Adsorption and Comparison With Commercial Carbons as Adsorbents

Cited by 4 publications

References 5 publications

Adsorption on Alumina of Different Origin

Adsorption on Alumina of Different Origin

Study of adsorption of selected organic species from aqueous solution on nh4be ta zeolite

Forming of Zeolite/Carbon Composite Substrate Coated with Titania for Photocatalyst Decomposition of Organic Compound

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