Removal of rhodamine B using iron-pillared bentonite

Hou, Meifang; Ma, Caixia; Zhang, Wei-De; Tang, Xiaoyan; Fan, Yanning; Wan, Hongfu

doi:10.1016/j.jhazmat.2010.11.110

Cited by 158 publications

(45 citation statements)

References 27 publications

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“…A iron pillared clay was able to remove 40% of methylene blue (Tireli et al, in press). Hou et al (2010) found for Fe-pillared clay values of 98.62 mg/g in the adsorption process using rhodamine B. Clays are widely employed in the removal of various classes of contaminants in aqueous media by adsorption processes (Daud and Hameed, 2010;Fatimah et al, 2010;Hou et al, 2010;Rivagli et al, 2014) because of high surface area and structures.…”

Section: Removal Of Methylene Bluementioning

confidence: 99%

“…Furthermore, iron is usually employed for adsorbents fabrication, because of the low cost (Mubarak et al, 2013). These represent an innovative and promising class of new materials for removal of contaminants such as organic dyes (Banković et al, 2012;Hou et al, 2010) and contaminants in aqueous media (Mubarak et al, 2013;Rivagli et al, 2014;Zhang et al, 2010). In addition, attention Applied Clay Science 97-98 (2014) 1-7 was focused on utilizing magnetic materials (such as magnetite and magnetite silica composites) for wastewater treatment (Ferroudj et al, 2013;Tuutijärvi et al, 2009;Wu et al, 2012;Yu and Yang, 2010) mainly because of simplicity and speed of separation when these materials are used with aqueous media.…”

Section: Introductionmentioning

confidence: 99%

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Influence of magnetic field on the adsorption of organic compound by clays modified with iron

Tireli

Marcos

Oliveira

et al. 2014

Applied Clay Science

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Section: Removal Of Methylene Bluementioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Influence of magnetic field on the adsorption of organic compound by clays modified with iron

Tireli

Marcos

Oliveira

et al. 2014

Applied Clay Science

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“…[9] As a result, adsorption method is one of the most effective choices to remove RhB from aqueous solution because of its low cost, simplicity, rapidness and high efficiency. Various adsorbents have been reported for the removal of RhB from aqueous solutions, including activated carbon, [10] fly ash, [11] montmorillonite, [12] bentonite, [13] biomass [14] , etc. However, most of these adsorbents are not the ideal choices for their unsatisfied adsorption capacity, insufficient adsorption efficiencies, or high price in application.…”

mentioning

confidence: 99%

Surface-bound humic acid increased rhodamine B adsorption on nanosized hydroxyapatite

Wang

et al. 2016

Journal of Dispersion Science and Technology

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In this study, humic acid-bound nanosized hydroxyapatite (HA-nHAP) was developed as a novel adsorbent, and the potential of using HA-nHAP for the adsorption of Rhodamine B (RhB) from aqueous solution as functions of pH, adsorbent dosage, contact time, ionic strength and temperature was investigated. The results indicated that the HA binding significantly increased the adsorption of RhB due to the introduction of abundant negatively charged functional groups. The adsorption capacity of HA-nHAP for RhB was found to be pH-dependent, and the optimal pH value was found to be 6.0. The adsorption equilibrium data obeyed Sips and Freundlich isotherms and the kinetic data were well described by the Elovich kinetic model. According to the Sips equation, the maximum adsorption capacity for RhB was 24.12 mg/g. Temperature and ionic strength experiment Downloaded by [University of Sussex Library] at 15:15 18 May 2016 2showed that they both had effect on the adsorption capacity of HA-nHAP. Thermodynamic study confirmed that the adsorption was a spontaneous, endothermic and more random arrangement process. The present investigation showed that HA-nHAP is a promising adsorbent for the removal of RhB from aqueous solution.

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“…In order to circumvent these limitations, modification techniques such as intercalation [25,26] pillaring [5,27], organic surface treatment [28,29], thermal activation [19,30], acid-alkaline treatment [5], and others have been used. However, the cost and efficiencies of these techniques are still major challenges.…”

Section: Introductionmentioning

confidence: 99%

Calcined biomass-modified bentonite clay for removal of aqueous metal ions

Olu-Owolabi

Alabi

Unuabonah

et al. 2016

Journal of Environmental Chemical Engineering

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A B S T R A C TRecent studies have shown that kaolinite clay modified with biosorbents are promising low cost adsorbents for the removal of metals from aqueous solution because the resultant composites have higher adsorption capacities, and hence a better aqueous metal ions removal efficiencies. However, some clay properties suggest that not all such modifications enhance adsorption capacity. In this study, bentonite (BEN) clay was calcined after modification with Carica papaya seeds or pine cone to obtain C. papaya-modified bentonite (CPB) and pine cone-modified bentonite (PCB). The efficiencies of these adsorbents for the removal of Pb(II), Cu(II) and Cd(II) ions from aqueous solutions were studied as a function of pH, time, sorbate concentration and temperature. X-ray diffraction results showed that CPB and PCB had lattice structure as BEN, but reductions in the surface areas of CPB and PCB were observed. Adsorption results showed that pH did not significantly affect removal of aqueous metal ions between pH 3 and 7. The adsorption fitted pseudo-second order (r 2 ! 0.966) and intra-particle diffusion models and indicated mainly surface phenomena involving sharing of electrons between the adsorbent surfaces and the metal ion species. Unlike Cu(II) and Cd(II), Pb(II) adsorption reduced in CPB and PCB indicating that not all calcined biomass-clay composites have enhanced aqueous metal adsorption efficiency. However, undesired properties such as adsorbent bleeding were removed and mechanical strength enhanced while easier separation of the adsorbents from solution as compared to the raw bentonite was observed.

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Removal of rhodamine B using iron-pillared bentonite

Cited by 158 publications

References 27 publications

Influence of magnetic field on the adsorption of organic compound by clays modified with iron

Influence of magnetic field on the adsorption of organic compound by clays modified with iron

Surface-bound humic acid increased rhodamine B adsorption on nanosized hydroxyapatite

Calcined biomass-modified bentonite clay for removal of aqueous metal ions

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