Sorption study of methylene blue on activated carbon prepared from Jatropha curcas and Terminalia catappa seed coats

Saheed, Ismaila Olalekan; Adekola, Folahan A.; Olatunji, Gabriel Ademola

doi:10.18596/jotcsa.287337

Cited by 18 publications

(10 citation statements)

References 21 publications

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“…The results give a hint that chemisorption was the most favored mechanism in the uptake of the adsorbate by the adsorbent. Similar trend in kinetics was highlighted for the sorption of methylene blue onto Terminalia catappa and Jatropha curcas seed coats activated carbon (24). (25).…”

Section: Kinetic Studiessupporting

confidence: 71%

Modeling and Regeneration Studies for the Removal of Crystal Violet Using Balanites aegyptiaca Seed Shell Activated Carbon

Yunusa

Usman

Ibrahim

2021

Journal of the Turkish Chemical Society Section A: Chemistry

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Activated carbon derived from Balanites aegyptiaca seed shell (ACBS) was employed to remove crystal violet (CV) from aqueous medium. The characterization of this ACBS has been conducted using analytical techniques such as SEM, EDS, and Brunauer-Emmett-Teller (BET) surface area analysis. The adsorption parameters investigated were as follows: contact time (5-120 min), temperature (303-333 K) and initial concentration (100-500 mg/L). The adsorption data were interpreted by using kinetic, isotherms and thermodynamic equations. The kinetic data matched the pseudo-second-order model well, and both external diffusion and internal diffusion influenced the adsorption of the dye onto the adsorbent. The isotherm data was in concurrence with the Freundlich model intimating the multilayer coverage of CV on the heterogeneous surface of the ACBS. The thermodynamic quantities like ∆S°, ∆H° and ∆G° were computed using Gibbs plot. The results implicated the practicability and endothermicity of the dye adsorption process. Regeneration studies show the effectiveness of CH3COOH solution in CV recovery from ACBS than distilled water, H2SO4, HCl, HNO3, and NaOH solutions. The regenerated ACBS was recycled five times and sustained an adsorption efficiency of 92.08%.

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Section: Kinetic Studiessupporting

confidence: 71%

Modeling and Regeneration Studies for the Removal of Crystal Violet Using Balanites aegyptiaca Seed Shell Activated Carbon

Yunusa

Usman

Ibrahim

2021

Journal of the Turkish Chemical Society Section A: Chemistry

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“…The SEM micrograph of DSAC before adsorption (Figure 2a) showed that there are many pores available for adsorption of RhB compared to DPAC (Figure 2c) with uneven like stone rough surfaces due to activation by acid treatment (10,28). The SEM micrographs of the loaded DSAC and DPAC (Figure 2b & 2d) indicated that the surfaces have been covered by RhB dye molecules.…”

Section: Scanning Electron Microscopy (Sem)mentioning

confidence: 99%

“…Many treatment methods had been put into consideration for the removal of dyestuff from wastewater such as oxidation (6), photochemical degradation (7), electrochemical degradation (8), and membrane separation (9). Though most of the aforementioned treatment methods for separating dyes from dye-containing wastewater have great limitations which include exorbitant, less effectiveness, production of toxic materials, and high energy demands (10). However, adsorption as a treatment technique employing activated carbon is immensely gaining worldwide acceptance for removing dyes and other organic pollutants from aqueous solutions owing to its ease of operation, low cost, simple design, and regeneration (11,12).…”

Section: Introductionmentioning

confidence: 99%

Box Behnken Design in the Optimization of Rhodamine B Adsorption onto Activated Carbon Prepared from Delonix regia Seeds and Pods

Azeez

Saheed

Adekola

et al. 2022

Journal of the Turkish Chemical Society Section A: Chemistry

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The uptake of Rhodamine B (RhB) dye onto chemically prepared activated carbon from Delonix regia pods (DPAC) and seeds (DSAC) by response surface methodology was investigated. The activated carbons were prepared with 1 M nitric acid and characterized by BET FTIR, SEM and EDX. The results obtained revealed that the prepared activated carbons DPAC and DSAC with pore diameter 4.04 nm and 3.48 nm respectively possess mesoporous structures. Optimization of the four operating variables viz; concentration, adsorbent dosage, contact time, and pH on RhB adsorption were examined using Box Behnken design (BBD). The maximum removal efficiency of RhB from aqueous solution was achieved at 99.16% and 98.36% for DSAC and DPAC respectively with an initial RhB concentration of 55 mg/L, 0.1 g dosage, pH 12, and 725 min for both adsorbents. The actual values of 99.16% (DSAC) and 98.36% (DPAC) compared with predicted values 101.7% (DSAC) and 99.40% (DPAC) have a good agreement and this confirms the suitability of the proposed model. The adsorption process fitted best into the Freundlich isotherm model. The adsorption process was adequately described by the pseudosecond-order kinetics model. Intra-particle diffusion appears to control the adsorption process but is not the only rate-limiting step.

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“…Atık sulardan renk giderimi için oksidasyon, iyon değiştirme [10], ozonlama, koagülasyon, flokülasyon [11], çöktürme ve adsorpsiyon yöntemleri kullanılmaktadır [12]. Bunların arasında adsorpsiyon basit, ekonomik ve verimli bir yöntem olması sebebi ile çok fazla tercih edilmektedir [13]. Atık sulardan adsorpsiyon yöntemi ile boyar madde uzaklaştırılmasında aktif karbon, sahip olduğu özellikleri sebebiyle en çok tercih edilen adsorbanlardan biridir.…”

Section: Introductionunclassified

Nar Kabuklarından Kimyasal Aktivasyon ile Hazırlanan Aktif Karbon Üzerinde Metilen Mavisinin Adsorpsiyonu

Yılmaz

Alagöz

2019

El-Cezeri Fen Ve Mühendislik Dergisi

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Bu çalışmada nar ekşisi yapımında atık olarak ayrılan nar kabuklarından kimyasal aktivasyon yöntemi ile aktif karbon üretimi yapılmış ve metilen mavisi adsorpsiyonu test edilmiştir. Ön analizleri yapılan nar kabukları kütlece 0.5:1, 1:1, 2:1, 3:1 KOH/nar kabuğu oranlarında KOH ile karıştırılıp (500-600 o C) farklı sıcaklıklarda karbonize edilmiştir. Yapılan BET analizlerinde, 3:1 KOH/nar kabuğu oranında ve 600 o C karbonizasyon sıcaklığında hazırlanmış aktif karbonun en yüksek yüzey alanına (900,12 m 2/ g) sahip olduğu görülmüştür. Adsorpsiyon çalışmaları kapsamında farklı başlangıç konsantrasyonun, sıcaklığın ve pH'ın metilen mavisi adsorpsiyonuna etkisi araştırılmıştır. Farklı pH'larda yapılan çalışmalar göstermiştir ki bazik ortamlarda MM(Metilen Mavisi) adsorpsiyonu artmıştır ve pH 12 (adsorpsiyon verimi % 95) ortamında en iyi MM giderimi sağlanmıştır. Sıcaklığın etkisinin incelendiği çalışmalar sıcaklığın 25 ⁰C'den 35 ⁰C'ye ve 45 ⁰C'ye yükseltilmesi MM adsorplanma hızını arttırdığını göstermiştir. Başlangıç konsantrasyonundaki artış aynı miktar adsorban tarafından adsorplanan MM miktarını attırmıştır. Deneysel verilerin Langmuir ve Freundlich izotermlerine uygunluğu araştırılmış ve Langmuir izotermi ile uyumlu olduğu görülmüştür.

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Sorption study of methylene blue on activated carbon prepared from Jatropha curcas and Terminalia catappa seed coats

Cited by 18 publications

References 21 publications

Modeling and Regeneration Studies for the Removal of Crystal Violet Using Balanites aegyptiaca Seed Shell Activated Carbon

Modeling and Regeneration Studies for the Removal of Crystal Violet Using Balanites aegyptiaca Seed Shell Activated Carbon

Box Behnken Design in the Optimization of Rhodamine B Adsorption onto Activated Carbon Prepared from Delonix regia Seeds and Pods

Nar Kabuklarından Kimyasal Aktivasyon ile Hazırlanan Aktif Karbon Üzerinde Metilen Mavisinin Adsorpsiyonu

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