Adsorption of Disperse Orange 30 dye onto activated carbon derived from Holm Oak (Quercus Ilex) acorns: A 3k factorial design and analysis

Ün, Ümran Tezcan; Ateş, Funda; Erginel, Nihal; Özcan, Öznur; Oduncu, Emre

doi:10.1016/j.jenvman.2015.03.004

Cited by 56 publications

(30 citation statements)

References 35 publications

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“…Similar behavior was observed for adsorptions of azo disperse dye when increasing the pH from 1.0 to 7.0, resulting in a decrease of removal efficiency by Tezcan Un et al (2015) and Wang et al (2012). Bingol et al (2010) studied the Brilliant Yellow dye adsorption onto sepiolite using a full factorial design.…”

supporting

confidence: 59%

The adsorption study of Royal Blue Tiafix and Black Tiassolan dyes using bone char as adsorbent

Moura

Seolatto

Ferreira

et al. 2018

Adsorption Science & Technology

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In this study, the potential of bone char for Royal Blue Tiafix and Black Tiassolan dyes adsorption from aqueous solutions was evaluated. The adsorbent was characterized physically and chemically by adsorption/desorption of N 2 at 77 K, scanning electron microscopy, X-ray diffraction, and infrared spectroscopy. The equilibrium adsorption results for bone char can be successfully modeled by the Langmuir and Freundlich isotherms. Pseudo-first-order and pseudo-second-order models were used to describe the kinetic data and rate constants were evaluated. Kinetics of each dye was found to follow pseudo-second-order rate kinetic model, with great correlation (higher than 0.99). In order to reduce the number of experiments to achieve better dye removal efficiency, a 2 3 full factorial design with three central points and six axial points was applied in the equilibrium experiments. The variables analyzed were agitation, temperature, and pH.

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supporting

confidence: 59%

The adsorption study of Royal Blue Tiafix and Black Tiassolan dyes using bone char as adsorbent

Moura

Seolatto

Ferreira

et al. 2018

Adsorption Science & Technology

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“…The degassed samples were separated and the chromatograms were created. Finally, the mass percentage of each element was calculated (Tezcan et al, 2015).…”

Section: Elemental Analysismentioning

confidence: 99%

“…Then it was placed into liquid nitrogen at −196.15°C and the increased uptake of N 2 was measured. The surface area of the adsorbent was calculated using the BET method in the range of (p/p 0 ) of 0.05-0.20 (Tezcan et al, 2015).…”

Section: Determination Of Specific Surface Areamentioning

confidence: 99%

COD and colour removal from molasses spent wash using activated carbon produced from bagasse fly ash of Matahara sugar factory, Oromiya region, Ethiopia

Nure¹,

Shibeshi²,

Leta³

et al. 2017

WSA

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The aim of this study was to investigate the removal of chemical oxygen demand (COD) and colour from a melanoidin solution using activated carbon produced from bagasse fly ash (BFA). Melanoidins are heterogeneous polymers and major contributors to the dark brown colour of molasses spent wash, which is an extensive cause of environment pollution. The surface area of the BFA was determined as 160.9 ± 2.8m²/g with 90% of particle less than 156.8 µm in size. Characterization of the BFA by Fourier transform infrared spectroscopy (FTIR) showed the presence of hydroxyl and carbonyl functional groups, whereas X-ray diffraction analysis indicated its amorphous nature. Moreover, scanning electron microscopy analysis showed a heterogeneous and irregular shape of pores. Among the adsorption isotherm models analysed, the Freundlich model fitted best to the experimental data, indicating a maximum adsorptive capacity of 124.80 mg/g. The removal of COD and colour from a melanoidin solution with this activated carbon was carried out using an experimental design taking 4 factors into account. These were adsorbent dose, contact time, pH and initial COD concentration, with removal of COD and colour as response variables. COD reduction was influenced by initial COD concentration whereas colour removal was dominated by contact time, which was in line with the findings of principal component analysis . The maximum COD removal recorded was 61.6% at the optimum condition of adsorbent dose of 4 g in 100 mL, contact time of 4 h, pH 8 and initial COD concentration 6 000 mg/L, whereas the decolourization of melanoidin solution was 64% at adsorbent dose of 4 g, contact time 4 h, pH 3 and initial COD concentration 6 000 mg/L. Hence, activated BFA is a promising option for simultaneous removal of COD and colour from molasses spent wash under the stated conditions.

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“…Most of these techniques have limitations like slow rates of degradation, hazardous intermediate products, and generation of secondary effluent . The adsorption process is a widely applied method with economic and high efficiency protocols in terms of performance and ease of operation . However, the large volume of wastewaters with high dye concentration requires the development of efficient, non‐toxic, low cost and regenerable adsorbents .…”

Section: Introductionmentioning

confidence: 99%

Effective impregnation for the preparation of magnetic mesoporous carbon: application to dye adsorption

Saroyan

Giannakoudakis

Sarafidis

et al. 2017

J of Chemical Tech & Biotech

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BACKGROUND In this study, magnetic mesoporous activated carbons were synthesized either via co‐precipitation of iron salts onto activated carbon or via impregnation of activated carbon with magnetic nanoparticles by sonication. The resulting impregnated carbons were examined as adsorbents for the removal of Reactive Black 5 (RB5) from aqueous solutions. RESULTS The magnetic nanocomposites were characterized by various techniques (nitrogen adsorption, Fourier transform infrared spectroscopy, X‐ray diffraction, vibrating sample magnetometry, and scanning electron microscope measurements). The results of characterization analyses revealed that co‐precipitation was unsuccessful for the preparation of magnetic carbon while sonication led to a super‐paramagnetic activated carbon. Adsorption studies revealed that although magnetic carbon presented a decreased adsorption capacity compared with raw carbon, it was an acceptable dye adsorbent. High pH and high ionic strength values favored dye adsorption, while the data of adsorption isotherms and kinetics were better fitted by the Freundlich isotherm model and the pseudo‐second‐order kinetic model, respectively. Regeneration of dye‐loaded activated carbons by thermal re‐activation and re‐use of regenerated samples were also investigated. CONCLUSION Mesoporous magnetic activated carbon, with a saturation magnetization of 18 emu g−1, was successfully synthesized by sonication of activated carbon and magnetite nanoparticles. The magnetic carbon was found to be an adequate dye adsorbent with a maximum adsorption capacity of 445.294 mg g−1. © 2017 Society of Chemical Industry

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Adsorption of Disperse Orange 30 dye onto activated carbon derived from Holm Oak (Quercus Ilex) acorns: A 3k factorial design and analysis

Cited by 56 publications

References 35 publications

The adsorption study of Royal Blue Tiafix and Black Tiassolan dyes using bone char as adsorbent

The adsorption study of Royal Blue Tiafix and Black Tiassolan dyes using bone char as adsorbent

COD and colour removal from molasses spent wash using activated carbon produced from bagasse fly ash of Matahara sugar factory, Oromiya region, Ethiopia

Effective impregnation for the preparation of magnetic mesoporous carbon: application to dye adsorption

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