Removal of methylene blue dye from aqueous solution using citric acid modified apricot stone

Kavcı, Erbil; Erkmen, Jülide; Bingöl, Mehmet

doi:10.1080/00986445.2021.2009812

Cited by 25 publications

(7 citation statements)

References 75 publications

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“…The plots of these models (INT and FD models) of the sorption process were not controlled by rate-determining steps and diffusion via liquid film surrounding the biochars, as their plots did not pass through the origin. The values of R 2 of the FD and INT models were comparatively low and not above 0.9 for all values when compared to that of the PSO model [73,77,78]. Hence, the biosorption of MB dye to the various biochars was based on the assumption of a rate-limiting step of chemical sorption or chemisorption involving valency forces via sharing or electron exchange between the sorbate and the biosorbents [72,79].…”

Section: Kinetic Studiesmentioning

confidence: 92%

“…The sorption of MB dye to various biochars demonstrates monolayer sorption with uniform energy of a finite number of active sites and less sorbate transmigration in the plane surface using PSB biochar and multilayer layer sorption on a diverse surface with a diverse distribution of active sites and energies using SDO and SSB biochars. This was possibly due to their low cost, easy accessibility, greenest, and non-producing secondary contamination [76,78,80]. The adsorption mechanism of MB dye using the SDO, SSB, and PDB biochars may be understand via electrostatic attraction between cationic MB dye molecules and negatively charged biochar surface, a hydrogen bonding attraction force between MB dye molecules and biochar surface, and/or surface to pore diffusion of dye molecules [81].…”

Section: Isotherm Studiesmentioning

confidence: 99%

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Adsorption of methylene blue (MB) dye on ozone, purified and sonicated sawdust biochars

Eldeeb

Aigbe

Ukhurebor

et al. 2022

Biomass Conv. Bioref.

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The synthesized biochars derived from sawdust (SD) SD ozone (SDO) biochar, purified SD (PSD) biochar, and sonicated SD (SSD) biochar, which was employed in the confiscation of methylene blue (MB) dye ion, were characterized employing “Brunauer–Emmett–Teller (BET), scanning electron microscope (SEM), Fourier Transform Infrared (FTIR), and Thermal gravimetrical analysis (TGA).” The impact of various factors, such as pH, biochar dosage, and initial concentration, on MB dye sequestration, was tested in this study. It was found that the biosorption of MB dye to the various biochars was dependent on the solution pH, with optimum confiscation of MB observed at pH 12 for all biochars. Pseudo-second-order (PSO), Freundlich (FRH)- (SDO and SSD biochars), and Langmuir (LNR)- (PSD biochar) models were used to best describe the biosorption process of MB dye to various biochars. Based on the LNR model fitting to the experimental data, the optimum sorption capacities obtained using SDO, SSD, and PSD biochars were 200, 526, and 769 mg/g, respectively. Electrostatic interaction and hydrogen bonding played an important role in the interaction mechanism between the various biochars and MB dye. Hence, these studied SDO, PSD, and SSD biochars prepared from cheap, easily accessible, biodegradable, and non-hazardous agro-waste materials can be effectively used for the removal, treatment, and management of MB dye as well as other industrial effluents before their disposal into the environment.

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Section: Kinetic Studiesmentioning

confidence: 92%

Section: Isotherm Studiesmentioning

confidence: 99%

Adsorption of methylene blue (MB) dye on ozone, purified and sonicated sawdust biochars

Eldeeb

Aigbe

Ukhurebor

et al. 2022

Biomass Conv. Bioref.

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“…Entalpinin (∆H= 1.09 kj/mol) pozitıf olması endotermik bir adsorpsiyon olduğunu gösterir. Entropinin (∆S= 0.029 kj/mol) pozitif olmas ı katı/çözelti arayüzünde adsorpsiyon çalışmaları sırasında rastgeleliğin artacağını gösterir (Kavci et al, 2021).…”

Section: 2adsorpsiyon Sonuçlarıunclassified

“…Bu da flor ile adsorbent yüzeyleri arasındaki adsorpsiyonun yüzeyde tek katmanlı bir kaplama olarak gerçekleştiğini gösterir. Bununla beraber RL değerlerine bakıldığında 0.02 ile 0.01 arasında değiştiği görülmüştür bununda adsorpsiyon için sadece uygun olduğunu gösterir(Kavci et al, 2021).…”

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Fluorine Removal in Aqueous Solutions Using ZnO Doped Chitosan

Bingöl

2022

EJOSAT

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In this study, it was aimed to prepare and analyze an environmentally friendly adsorbent because fluoride in water is an important health threat affecting the whole world. ZnO doped chitosan adsorbent was produced for fluorine adsorption. The characterization of the adsorbent was done by FT-IR, SEM-EDX analysis. The effects of pH, initial concentration, amount of adsorbent on adsorption were investigated. Langmuir and Temkin isotherm models were studied and Langmuir was found to be the most compatible isotherm. The maximum adsorption amount was calculated as 3.67 mg/g according to Langmuir isotherm.

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“…The formulas below were used to calculate the % removal of CR and the adsorption capacity of the adsorbent. Where C0 is the initial concentration,Ce is equilibrium concentration and Ct is the concentration at time, qe is equilibrium adsorption capacity and qt adsorption capacity at time, V is the volume of CR solution, and W is the adsorbent mass [24].…”

Section: Adsorption Studiesmentioning

confidence: 99%

Removal of Congo Red From Water By Adsorption Onto Chitosan-BN-Fe2O3: Kinetic and Isotherm Studies

Bingöl

2022

Erzincan Üniversitesi Fen Bilimleri Enstitüsü Dergisi

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Dünyada artan teknoloji ile birlikte atıklar ciddi bir problem haline gelmiştir. Bu atıklardan en önemlilerinden olan atık boyar maddeler, çevre için önemli zararlar vermektedir. Bunların giderimi ile ilgili çalışmalar artmıştır. Bu çalışmada da Kongo red giderimi için Kitosana Boron Nitride- Fe2O3 katkılanıp adsorbent hazırlanmıştır. Bu adsorbentin (Ch-BN-Fe2O3) kimyasal yapıları FT-IR analizi ile doğrulanmıştır. Adsorpsiyon çalışmalarında adsorbent kütleleri, pH, temas süresi congo red giderimi üzerine etkileri araştırılmıştır. Buna göre 0,1 gram adsorbent kütlesi, pH 7, 60 dk sürede en yüksek %99,58 giderim gerçekleşmiştir. Ayrıca çalışmada termodinamik, izoterm ve kinetik çalışmalar gerçekleşmiştir. İzoterm çalışmalarında en uygun modelin langmuir olduğu belirlenmiş ve qmax değeri de 86,95 mg/g bulunmuştur. Bununla birlikte pseudo second order kinetic modeli uygun olduğu tespit edilmiştir

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Removal of methylene blue dye from aqueous solution using citric acid modified apricot stone

Cited by 25 publications

References 75 publications

Adsorption of methylene blue (MB) dye on ozone, purified and sonicated sawdust biochars

Adsorption of methylene blue (MB) dye on ozone, purified and sonicated sawdust biochars

Fluorine Removal in Aqueous Solutions Using ZnO Doped Chitosan

Removal of Congo Red From Water By Adsorption Onto Chitosan-BN-Fe2O3: Kinetic and Isotherm Studies

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