Modification of organo-zeolite surface for the removal of reactive azo dyes in fixed-bed reactors

Benkli, Y.E.; Can, Muhammed Fatih; Turan, Mustafa; Çelik, M.S.

doi:10.1016/j.watres.2004.10.008

Cited by 138 publications

(82 citation statements)

References 26 publications

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“…In addition, the modification of zeolite surface with quaternary amine hexadecyltrimethyl ammonium bromide (HTAB) to improve the removal efficiency of reactive azo dyes in a zeolite fixed bed was investigated by Benkli et al (2005). Three different types of dyes [C.I.…”

Section: Zeolite-based Catalystsmentioning

confidence: 99%

Recent advances and prospects of catalytic advanced oxidation process in treating textile effluents

Buthiyappan

Raman

Daud

2016

Reviews in Chemical Engineering

236

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AbstractIn the past few years, there have been many researches on the use of different types of homogenous catalyst for the degradation of textile wastewater in conventional advanced oxidation processes (AOPs). However, homogenous AOPs suffer from few limitations, including large consumption of chemicals, acidic pH, high cost of hydrogen peroxide, generation of iron sludge, and necessity of post-treatment. Therefore, recently, there have been more researches that focus on improving the performance of conventional AOPs using heterogeneous catalysts such as titanium dioxide, nanomaterials, metal oxides, zeolite, hematite, goethite, magnetite, and activated carbon (AC). Besides, different supports such as AC that have been incorporated with transition metals and clays have been proven to have excellent catalytic activity in AOPs. This paper presents a comprehensive review of advances and prospects of catalytic AOPs for the decontamination of a wide range of synthetic and real textile wastewater. This review provides an up-to-date critical review of the information on the degradation of various textile dyes by a wide range of heterogeneous catalysts and adsorbents. The future challenges of AOPs, including chemical consumption, toxicity assessment, reactor design, and limitation of catalysts, are discussed in this paper. In addition, this paper also discusses the presence of ions, generation of by-products, and industrial applications of AOPs. Special emphasis is given to recent studies and large-scale combination of AOPs for wastewater treatment. This review paper concludes that more studies are needed for the kinetics, reactor design, and modeling of hybrid AOPs and the production of their corresponding intermediate products and secondary pollutants. A better economic model should also be developed to predict the cost of AOPs, as the treatment cost varies with dyes and textile effluents.

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Section: Zeolite-based Catalystsmentioning

confidence: 99%

Recent advances and prospects of catalytic advanced oxidation process in treating textile effluents

Buthiyappan

Raman

Daud

2016

Reviews in Chemical Engineering

236

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“…Wastewater from a dye house is generally multi-colored. The currently available technologies typically are inadequate for the removal of toxic pollutants such as dyes from textile wastewater [7]. Biological and chemical techniques have not been very successful due to the non-biodegradable nature of most dyes.…”

Section: Introductionmentioning

confidence: 99%

Development of Composite Adsorbent Coating Based Acrylic Polymer/Bentonite for Methylene Blue Removal

Azha

Hamid

Ismail

2017

J. Eng. Technol. Sci.

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Abstract. The development of composite adsorbent coating based acrylic polymer solution (APS) mixed with bentonite (ben) was investigated. The composite adsorbent coating was prepared and coated to a high surface area substrate, cotton cellulosic fiber (CCF). The APS/ben-CCF was used for a single cationic methylene blue (MB) dye adsorption system. Characterization of composition and structure of materials and coating was carried out by X-ray fluorescence (XRF), scanning electron microscopy (SEM), and UV-spectroscopy (UV-VIS). The adsorption properties of the APS/ben-CCF were investigated as a function of solution pH, initial dye concentration and contact time as well as solution temperature of MB dye. The result revealed that the APS/ben-CCF functioned well in solutions of various pH (acidic to alkaline), achieving 100% removal of MB within 2 hours of adsorption for 50 ppm. Kinetic studies showed that APS/ben-CCF is endothermic in nature since the adsorption capacity increased with increasing solution temperature. These results demonstrate that APS/ben-CCF composite adsorbent coating is an advanced adsorbent with advantages such as easy phase separation and capability to remove cationic dyes in a short time period.

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“…This modification using a surface active agent is a key technology for the application of raw zeolites in wastewater treatment (Leyva-Ramos et al, 2008;Zeng, Woo, Lee, & Park, 2010). Currently, many research studies have investigated these modified zeolite's adsorption performances with many dyes, such as reactive black 5, reactive red 239, reactive yellow 176, acid orange 8, and acid orange II (Ayşegul, Ozgur, Abdullah Zahid, & Mustafa, 2008;Benkli, Can, Turan, & Çelik, 2005;Jin, Jiang, Shan, Pei, & Chen, 2008;Dogan Karadag, 2007;Torres-Pérez, Solache-Ríos, & Olguín, 2007). However, few studies have been conducted regarding the removal of Rhodamine B in water using zeolites which have been modified by a surface active agent (Hayakawa, Dobashi, Miyamoto, & Satake, 1997;Hayakawa et al, 2000).…”

Section: Introductionmentioning

confidence: 99%

The Adsorption of Rhodamine B in Water by Modified Zeolites

Wang¹,

Li²,

Pan³

et al. 2016

MAS

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In this study, modified zeolites were prepared through the modification of raw zeolites, using hydrochloric acid (HCl) and cetyl trimethyl ammonium bromide (CTAB), whose properties were then characterized by a Zeta Potential Meter and an X-ray diffractometer. Also, the adsorption mechanisms were investigated in depth. The experimental results indicated that, in terms of the adsorption capacity of Rhodamine B in water, the modified zeolites were more favorable than the raw zeolites. As the dosage of adsorbent increased, the removal percentage of Rhodamine B in the water increased, while the unit adsorption capacity decreased. The pH value of the solution, and reaction temperature imposed little effects on the adsorption of the Rhodamine B. In accordance with the adsorption thermodynamic results, Langmuir and Freundlich isothermal adsorption models were able to accurately describe the adsorption of Rhodamine B in water by the modified zeolites. The fitting results had a higher correlation when using a Freundlich isothermal model. At 303 K, the static saturated adsorption capacity was 4.41 mg/g. The kinetic results demonstrated that the adsorption of Rhodamine B in water using modified zeolites fit well with the pseudo-second-order kinetic model.

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Modification of organo-zeolite surface for the removal of reactive azo dyes in fixed-bed reactors

Cited by 138 publications

References 26 publications

Recent advances and prospects of catalytic advanced oxidation process in treating textile effluents

Recent advances and prospects of catalytic advanced oxidation process in treating textile effluents

Development of Composite Adsorbent Coating Based Acrylic Polymer/Bentonite for Methylene Blue Removal

The Adsorption of Rhodamine B in Water by Modified Zeolites

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