Adsorption behaviors of methyl orange dye on nitrogen-doped mesoporous carbon materials

He, Li; An, Nihong; Liu, Gang; Li, Jialu; Liu, Na; Jia, Mingjun; Wen-xiang, Zhang; Yuan, Xiang‐Ai

doi:10.1016/j.jcis.2015.12.048

Cited by 103 publications

(20 citation statements)

References 39 publications

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“…The R L values obtained between 0.082 and 0.0289 for 8 mg of adsorbent as well as the values determined within the range 0.0053–0.00176 for 13 mg of adsorbent confirm that the adsorption process is also favourable. As evident from Table , the values of R L and 1/ n were found to be in the range of 0–1, which confirm the favourable adsorption of MV in the adsorption process . According to the correlation coefficients ( R 2 ) obtained from the linear form of equations presented in Table , the Langmuir model was in good agreement with the experimental data with high R 2 values compared to the other models.…”

Section: Resultssupporting

confidence: 64%

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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Section: Resultssupporting

confidence: 64%

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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“…At high concentrations, there will be excess dye molecules left un-adsorbed in the solution since all available binding sites have been occupied, resulting in lower removal of dyes [29]. The pattern of the corresponding dye removal in terms of adsorption capacity and removal are similar to the findings made by Li et al [36].…”

Section: ) Effect Of Initial Dye Concentrationsupporting

confidence: 82%

Razor Clam (Ensis directus) Shell as a Low-Cost Adsorbent for Anionic and Cationic Dyes in Aqueous Solutions

Areibat¹,

Kamari²,

Din³

2018

IJESD

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The ultimate objective of this study was to investigate the potential application of razor clam (Ensis directus) shell (RCS) for the removal of synthetic dyes from aqueous solutions. Adsorption of anionic dye (congo red, CR) and cationic dye (methylene blue, MB) was studied under different experimental conditions such as initial pH solution, adsorbent dosage and initial dyes concentration. High affinity of CR towards RCS was obtained at an acidic medium (pH 2.0), while alkaline medium (pH 8.0) was favourable for MB adsorption. The removal for both dyes exhibited a reverse trend with increasing the initial dyes concentration. Adsorption equilibrium data were fitted to Freundlich and Langmuir isotherm models. A better correlation (R 2 > 0.95) was obtained with Freundlich isotherm model. The adsorption capacity (K F) of RCS for CR and MB was estimated as 6.52 and 0.66 mg/g, respectively. The regeneration of RCS was evaluated in a desorption study, of which hydrochloric acid (HCl) and acetic acid (CH 3 COOH) was used as desorption agents. HCl (0.5 mol/L) was the best desorption agent, due to its ability to desorb 81% of CR and 67% of MB. The feasibility of RCS was compared with olive tree derived activated carbon, a commercial adsorbent for water treatment in Libya. Based on results obtained from competitive and comparative studies, it can be concluded that RCS, a fishery waste-based material, is a promising low-cost adsorbent for the remediation of water contaminated with toxic dyes.

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“…The adsorption technique is gaining more attention for it is high efficiency, simple design, cost-effective and adaptable. [29][30][31][32][33][34][35] There have been various kinds of adsorbents developed, such as carbon materials, [36][37][38] natural clay minerals, [39][40][41][42] and bioadsorbents. [43][44][45] However, certain deciencies including costly, intricate pre-treatment and low adsorption capability limited the use of some certain adsorbents.…”

Section: Introductionmentioning

confidence: 99%

One-step preparation of a novel SrCO₃/g-C₃N₄ nano-composite and its application in selective adsorption of crystal violet

et al. 2018

RSC Adv.

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Adsorption behaviors of methyl orange dye on nitrogen-doped mesoporous carbon materials

Cited by 103 publications

References 39 publications

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

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

Razor Clam (Ensis directus) Shell as a Low-Cost Adsorbent for Anionic and Cationic Dyes in Aqueous Solutions

One-step preparation of a novel SrCO₃/g-C₃N₄ nano-composite and its application in selective adsorption of crystal violet

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Adsorption behaviors of methyl orange dye on nitrogen-doped mesoporous carbon materials

Cited by 103 publications

References 39 publications

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

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

Razor Clam (Ensis directus) Shell as a Low-Cost Adsorbent for Anionic and Cationic Dyes in Aqueous Solutions

One-step preparation of a novel SrCO3/g-C3N4 nano-composite and its application in selective adsorption of crystal violet

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One-step preparation of a novel SrCO₃/g-C₃N₄ nano-composite and its application in selective adsorption of crystal violet