Synthesis of magnetic biocomposite for efficient adsorption of azo dye from aqueous solution

Sivashankar, R.; Sathya, Arunachalam Bose; Krishnakumar, Uma; Sivasubramanian, V.

doi:10.1016/j.ecoenv.2015.04.037

Cited by 27 publications

(8 citation statements)

References 24 publications

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“…It is clear that the original color (purple) disappears, becoming a clear solution after adsorption. The decrease of dye intensity in solution is probably due to protonation that would be the specific cause for the enhancement of electrostatic interaction between the negatively charged anions in the molecule of dye and the positive charge of the adsorbent active site [42]. In fact, the hydrogen ion concentration in the solution with pH of 5 is higher and this causes the hydrogen ions to compete with another contaminant for the active site.…”

Section: Effect Of Ph On Pb(ii) Ion Adsorption Chemical Oxygen Demand (Cod) Total Suspended Solid (Tss) and Dyes Adsorptionmentioning

confidence: 99%

The Amine Functionalized Sugarcane Bagasse Biocomposites as Magnetically Adsorbent for Contaminants Removal in Aqueous Solution

et al. 2021

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The method of solvothermal by one-step operation has been performed to synthesize of magnetic amine-functionalized sugarcane bagasse biocomposites (SB-MH). The obtained SB-MH contains 62.34% of Fe, 17.8 mmol/g of amine, and a magnetic property of 19.46 emu/g. The biocomposite surface area increased significantly from 1.617 to 25.789 m2/g after amine functionalization. The optimum condition of SB-MH used for Pb(II) ion removal was achieved at pH 5 for 360 min with adsorption capacity of 203.522 mg/g. The pseudo 2nd order was well-fitted to the model of Pb(II) ion adsorption. Meanwhile, other contaminant parameters number of Chemical Oxygen Demand (COD), Total Suspended Solid (TSS), and dye in wastewater were also remarkably reduced by about 74.4%, 88.0%, and 96.7%, respectively. The reusability of SB-MH with 4th repetitions showed only a slight decrease in performance of 5%. Therefore, the proposed magnetic amine-functionalized sugarcane bagasse biocomposites lead to a very potential adsorbent implemented in high scale due to high surface area, easy separation, stable materials and capability to adsorb contaminants from aqueous solution.

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Section: Effect Of Ph On Pb(ii) Ion Adsorption Chemical Oxygen Demand (Cod) Total Suspended Solid (Tss) and Dyes Adsorptionmentioning

confidence: 99%

The Amine Functionalized Sugarcane Bagasse Biocomposites as Magnetically Adsorbent for Contaminants Removal in Aqueous Solution

et al. 2021

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“…There are many classes of dyes such as acidic, basic, neutral, azo, disperse, direct and reactive dyes. Azo dyes which are most frequently used contain one or more azo bonds (─N═N─) in their structures …”

Section: Introductionmentioning

confidence: 99%

Synthesis and characterization of antibacterial chromium iron oxide nanoparticle‐loaded activated carbon for ultrasound‐assisted wastewater treatment

Bazrafshan

Hajati

Ghaedi

et al. 2017

Applied Organom Chemis

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The aim of this study was to evaluate the surface adsorption capacity of CrFeO 3 nanoparticle-loaded activated carbon (CrFeO 3 -NPs-AC) for the removal of a cationic dye (methyl violet, MV). CrFeO 3 -NPs were hydrothermally synthesized and loaded on AC followed by characterization using X-ray diffraction, fieldemission scanning electron microscopy and energy-dispersive and Fourier transform infrared spectroscopies. The CrFeO 3 -NPs were tested for in vitro antibacterial activities against Gram-positive (Staphylococcus aureus) and Gram-negative (Pseudomonas aeruginosa) bacteria. Minimum inhibitory and minimum bactericidal concentrations of CrFeO 3 -NPs-AC were obtained to be 50 and 100 μg ml , respectively, against S. aureus and 25 and 50 μg ml −1 against P. aeruginosa. These results indicated the antibacterial properties of CrFeO 3 -NPs-AC. To investigate the adsorption process, several systematic experiments were designed by varying parameters such as adsorbent mass, pH, initial MV concentration and sonication time. The adsorption process was modelled and the optimal conditions were determined to be 0.013 g, 7.4, 15 mg l −1 and 8 min for adsorbent mass, pH, MV concentration and sonication time, respectively. The real experimental data were found to be efficiently explained by response surface methodology and genetic algorithm model. Kinetic studies for MV adsorption showed rapid sorption dynamics described by a second-order kinetic model, suggesting a chemisorption mechanism. Then, the experimental equilibrium data obtained at various concentrations of MV and adsorbent masses were fitted to conventional Langmuir, Freundlich, Temkin and Dubinin-Radushkevich isotherm models. Dye adsorption equilibrium data were fitted well to the Langmuir isotherm. From the Langmuir model, the maximum monolayer capacity was calculated to be 65.67 mg g −1 at optimum adsorbent mass.

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“…Research focusing on azo decolourisation has always been in demand, focusing on novel ways to degrade this dye, the danger always lying in the azo group (-N=N-). Methods may depend on physicochemical removal such as adsorption on magnetic biocomposites (Sivashankar et al, 2015) or could rely on biological removal depending on enzyme induction such as peroxidases, azo reductases etc.…”

Section: Introductionmentioning

confidence: 99%

The role of riboflavin in decolourisation of Congo red and bioelectricity production using Shewanella oneidensis-MR1 under MFC and non-MFC conditions

Gomaa

Fapetu

Kyazze

et al. 2017

World J Microbiol Biotechnol

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Synthesis of magnetic biocomposite for efficient adsorption of azo dye from aqueous solution

Cited by 27 publications

References 24 publications

The Amine Functionalized Sugarcane Bagasse Biocomposites as Magnetically Adsorbent for Contaminants Removal in Aqueous Solution

The Amine Functionalized Sugarcane Bagasse Biocomposites as Magnetically Adsorbent for Contaminants Removal in Aqueous Solution

Synthesis and characterization of antibacterial chromium iron oxide nanoparticle‐loaded activated carbon for ultrasound‐assisted wastewater treatment

The role of riboflavin in decolourisation of Congo red and bioelectricity production using Shewanella oneidensis-MR1 under MFC and non-MFC conditions

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