Removal of dyes from wastewaters by adsorption on pillared clays

Gil, A.; Assis, F.C.C.; Albeniz, S.; Korili, S.A.

doi:10.1016/j.cej.2011.01.078

Cited by 288 publications

(166 citation statements)

References 56 publications

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“…The work carried out by Gil et al (2011) showed that PILCs could be considered as a potential low-cost adsorbent for dye removal from aqueous solutions. In their study, two PILCs were synthesized by the intercalation of aluminum and zirconium solutions and evaluated as adsorbents for the removal of OII and MB.…”

Section: Pillared Clay-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

242

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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: Pillared Clay-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

242

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“…As a result, there has been a great interest in developing new adsorbent materials with diverse compositions, properties and functionalities. Although commercial activated carbon is the most widely used adsorbent for dye removal, it is too expensive [9]; consequently, numerous low-cost alternative adsorbents have been proposed including chemically modified sugarcane bagasse lignin [10], pistachio hull waste [11], coffee husk-based activated carbon [12], pine cone [13], rice husk [14], synthetic calcium phosphates [15], natural untreated clay [16], pillared clays [17], and swelling clays [18].…”

Section: Introductionmentioning

confidence: 99%

Adsorption of Methylene Blue from Aqueous Solution Using Steam-Activated Carbon Produced from <i>Lantana camara</i> Stem

Amuda¹,

Olayiwola²,

Alade³

et al. 2014

JEP

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“…The intercept C values of the plots which represent the extent of the boundary layer thickness increased proportionally with the increasing MB concentration, suggesting that the boundary layer effect was greater at higher concentration. The characteristic of this plot has been widely obtained for the adsorption of textile dyes onto suspended clay particles as observed by other workers (Elass et al 2011;Gil et al 2011).…”

Section: Diffusion-based Modelsmentioning

confidence: 66%

Role of bentonite adsorbent sub-layer in the photocatalytic-adsorptive removal of methylene blue by the immobilized TiO2/bentonite system

Ngoh

Nawi

2016

Int. J. Environ. Sci. Technol.

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An immobilized clay composite (BEN-PVAG) on a glass plate (GP) was fabricated using bentonite powder (BEN) and glutaraldehyde cross-linked polyvinyl alcohol (PVAG) as the adsorbent and adhesive, respectively. The immobilized bentonite composite (BEN-PVAG) was characterized using SEM, EDX, FTIR, and BET analysis. The adsorption capacity of BEN-PVAG was examined using methylene blue (MB) as the model pollutant. The results indicated that the adsorption of MB onto BEN-PVAG obeyed pseudo-second-order kinetics. In addition, the adsorption of MB by the immobilized BEN-PVAG was controlled by intra-particle diffusion. In contrast, the adsorption of MB by the suspended BEN-PVAG composite was dominated by film diffusion. The immobilized BEN-PVAG was then applied as the adsorbent sublayer for the fabrication of P-25TiO 2 /BEN-PVAG/GP bilayer system where P-25TiO 2 was deposited as the top layer. The fabricated bilayer system exhibited synergistic photocatalytic-adsorptive removal of MB upon irradiation with a light source, while experiment in the dark yielded only adsorption process. The rate of the synergistic photocatalytic-adsorptive removal of MB by the P-25TiO 2 / BEN-PVAG/GP was 5.3 times faster than the suspended P-25TiO 2 . The result implied the positive impact of the BEN-PVAG adsorbent sub-layer on the immobilized P-25TiO 2 photocatalyst. Most important, the immobilized P-25TiO 2 /BEN-PVAG/GP provided a convenient reuse of the catalyst over time where the treated water could be directly discharged without the need of filtration.

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Removal of dyes from wastewaters by adsorption on pillared clays

Cited by 288 publications

References 56 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

Adsorption of Methylene Blue from Aqueous Solution Using Steam-Activated Carbon Produced from <i>Lantana camara</i> Stem

Role of bentonite adsorbent sub-layer in the photocatalytic-adsorptive removal of methylene blue by the immobilized TiO2/bentonite system

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Removal of dyes from wastewaters by adsorption on pillared clays

Cited by 288 publications

References 56 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

Adsorption of Methylene Blue from Aqueous Solution Using Steam-Activated Carbon Produced from &lt;i&gt;Lantana camara&lt;/i&gt; Stem

Role of bentonite adsorbent sub-layer in the photocatalytic-adsorptive removal of methylene blue by the immobilized TiO2/bentonite system

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Adsorption of Methylene Blue from Aqueous Solution Using Steam-Activated Carbon Produced from <i>Lantana camara</i> Stem