Application of bifunctional magnetic adsorbent to adsorb metal cations and anionic dyes in aqueous solution

Lin, Ya-Fen; Chen, Huawei; Chien, Poh-Sun; Chiou, Chyow-San; Liu, Cheng‐Chung

doi:10.1016/j.jhazmat.2010.10.022

Cited by 160 publications

(49 citation statements)

References 42 publications

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“…Amine functional groups in adsorbents play an important role in the effectiveness, capacity, and selectivity for the adsorption of water pollutants (Lin et al 2011). The properties resulting from the cationization of microcrystalline cellulose using 3-chloro-2-hydroxypropyltriethylammonium chloride have been reported (El-Shishtawy and Hashem 2001).…”

Section: Introductionmentioning

confidence: 99%

Functionalization of Microcrystalline Cellulose with N,N-dimethyldodecylamine for the Removal of Congo Red Dye from an Aqueous Solution

Li¹,

Lijuan²

2014

BioResources

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Microcrystalline cellulose (MCC) was functionalized with quaternary amine groups for use as an adsorbent to remove Congo Red dye (CR) from aqueous solution. The ultrasonic pretreatment of MCC was investigated during its functionalization. Characterization was conducted using infrared spectroscopy (FT-IR), X-ray photoelectron spectroscopy (XPS), X-ray diffraction (XRD), and scanning electron microscopy (SEM). The batch adsorption of the functionalized MCC was studied to evaluate the effects of dye concentration, pH of solution, temperature, and NaCl concentration on the adsorption CR. The adsorbent (FM-1) obtained using ultrasonic pretreatment of MCC under 10.8 kJ•g -1 exhibited an adsorption capacity of 304 mg•g -1 at initial pH under a dose of 0.1 g•L -1 and initial concentration of 80 mg•L -1 . After functionalization, the FT-IR and XPS results indicated that the quaternary amine group was successfully grafted onto the cellulose, the surface was transformed to be coarse and porous, and the crystalline structure of the original cellulose was disrupted. FM-1 has been shown to be a promising and efficient adsorbent for the removal of CR from an aqueous solution.

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Section: Introductionmentioning

confidence: 99%

Functionalization of Microcrystalline Cellulose with N,N-dimethyldodecylamine for the Removal of Congo Red Dye from an Aqueous Solution

Li¹,

Lijuan²

2014

BioResources

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“…Modification of silica is typically accomplished through silanization reaction, yet requires long and tedious procedure through heating process. To overcome this problem, several studies with a simple technique of sol-gel process for modification of silica with functional groups have been reported [19,[27][28][29].…”

Section: +mentioning

confidence: 99%

“…4(c)]. The reduction of M s is attributed to the contribution of the non magnetic SiO 2 -DETA to the total mass of the particles [29]. Zhang et al [2] have emphasized the reduction of the maximum saturation magnetization from 55.05 to 20.14 emu/g when coating magnetite with thiol-silica.…”

Section: Fe3o4(s) + 8hcl(aq) → 2fecl3(aq) + Fecl2(aq) + 4h2o(l)mentioning

confidence: 99%

Functionalization of Silica Coated on Iron Sand Magnetic Material with Diethylenetriamine

Fahmiati¹,

Nuryono²,

Suyanta³

2018

Asian J. Chem.

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Diethylenetriamine (DETA) functionalized silica coated on magnetic material of iron sand (MM@SiO2-DETA) has been synthesized by sol-gel method. Synthesis was carried out by coating magnetic material of iron sand as the core with diethylenetriamine-modified silica using sodium silicate solution and N 1 -(3-trimethoxysylilpropyl)diethylenetriamine (TMPSDETA) as silica and diethylenetriamine group sources, respectively. Several variations of mole ratio of silica to DETA at a constant weight of magnetic material were examined to evaluate the effect of the coating agent amount on the properties of MM@SiO2-DETA. MM@SiO2-DETA was characterized with Fourier transform infrared spectrophotometer, X-ray diffraction, scanning electron microscope with energy dispersive spectroscope (SEM-EDX), vibrating sample magnetometer and thermal gravimetric analysis. Stability test of product toward acidic solution and the effect of mole ratio of SiO2 and DETA on adsorption of Au(III) also evaluated. The characterization results indicated that SiO2 and DETA groups were successfully attached to the surface of magnetic material to form MM@SiO2-DETA. Characteristic bands of the vibration of propyl and amino groups derived from DETA; indicating that DETA was successfully reacted with MM@SiO2. Coating of magnetic material with SiO2 exhibits the decrease in Ms up to 38.2 emu/g and 23.5 emu/g after coating with SiO2-DETA. Thermalgravimetric analysis indicate thermal stability of the resulted product of MM@SiO2-DETA (1:1) up to 350 °C. Dissolution by acid solution can be diminished by coating magnetic material with silica. Gold(III) adsorption capacity of MM@SiO2-DETA (1:0.5), MM@SiO2-DETA (1:1) and MM@SiO2-DETA (1:2) are found to be higher than 92 %.

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“…Other experimental conditions were the same as adsorption isotherm testing and the initial concentration of dye was 400 mg/L. The results were analyzed with two models, namely, the pseudo-first-order (eq 7) and pseudo-second-order kinetic models (eq 8) (Lin et al, 2011):…”

Section: Adsorption Kineticsmentioning

confidence: 99%

Application of magnetically modified sewage sludge ash (SSA) in ionic dye adsorption

Hu¹,

2013

Journal of the Air & Waste Management Association

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Incineration is a traditional method of treating sewage sludge and the disposal of derived ash is a problem of secondary waste treatment. In this study, sewage sludge ash (SSA) was coated with ferrite through a ferrite process and then used as an adsorbent for ionic dyes (methylene blue [MB] and Procion Red MX-5B [PR]). The modified SSA possessed surface potential that provided electrostatic attraction toward MB and PR. Adsorbent FA10 (named on the basis of being produced from 10 g of SSA in the ferrite process) was used for the adsorption of MB. Ideal pH for adsorption was 9.0 and maximum adsorption capacity based on Langmuir isotherm equation was 22.03 mg/g. Adsorbent FA2.5 (named on the basis of being produced from 2.5 g of SSA in the ferrite process) was used for PR adsorption. Ideal pH for adsorption was 3.0 and the maximum adsorption capacity (calculated as above) was 28.82 mg/g. Kinetic results reveal that both MB and PR adsorption fit the pseudo-second-order kinetic model better than the pseudo-firstorder model. The values of activation energy calculated from rate constants were 61.71 and 9.07 kJ/mol for MB and PR, respectively. Implications: Magnetic modified adsorbent could be synthesized from sewage sludge ash (SSA). In this study, the adsorption ability of SSA toward ionic dye (methylene blue [MB] and Procion Red MX-5B [PR]) was enhanced by ferrite process. The synthesized Fe 3 O 4 can act as an active site and provide electrostatic attraction toward cationic dye and anionic dye at different pH. The application of magnetic modified adsorbent in wastewater treatment can not only recycle the SSA, but also make SSA become an environmentally friendly material.

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Application of bifunctional magnetic adsorbent to adsorb metal cations and anionic dyes in aqueous solution

Cited by 160 publications

References 42 publications

Functionalization of Microcrystalline Cellulose with N,N-dimethyldodecylamine for the Removal of Congo Red Dye from an Aqueous Solution

Functionalization of Microcrystalline Cellulose with N,N-dimethyldodecylamine for the Removal of Congo Red Dye from an Aqueous Solution

Functionalization of Silica Coated on Iron Sand Magnetic Material with Diethylenetriamine

Application of magnetically modified sewage sludge ash (SSA) in ionic dye adsorption

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