Adsorption isotherms and kinetics of methylene blue on a low-cost adsorbent recovered from a spent catalyst of vinyl acetate synthesis

ZnO/AC composite was prepared from spent catalyst of vinyl acetate synthesis by using conventional thermal treatment under CO2 atmosphere. The final composite was obtained with the operating conditions of activation temperature of 950°C, activation time of 120min and the CO2 flow rate of 600ml/min. The structure and surface properties of the ZnO/AC composite were observed and characterized by scanning electron microscope (SEM-EDX), X-ray diffraction (XRD), fourier transform infrared spectroscopy (FT-IR) and the UV diffuse reflectance spectra. It was found that the zinc acetate present in the spent catalyst is transformed to zinc oxide (ZnO) after thermal treatment. ZnO particles were well adhered and uniformly distributed onto the carbon surface, forming ZnO/AC composite. The thermal treatment of the spent catalyst gives rise to a material with excellent adsorptive and photocatalytic properties.

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A study of the kinetics of vinyl acetate synthesis

The Chemical Engineering Journal ◽

10.1016/0300-9467(77)80074-9 ◽

1977 ◽

Vol 13 (2) ◽

pp. 201-211 ◽

Cited By ~ 11

Author(s):

M. El-Sawi ◽

G. Emig ◽

H. Hofmann

Keyword(s):

Vinyl Acetate ◽

Vinyl Acetate Synthesis ◽

Kinetics Of

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Adsorption isotherms and kinetics of HFC-404A onto bituminous based granular activated carbon for storage and cooling applications

Applied Thermal Engineering ◽

10.1016/j.applthermaleng.2016.03.057 ◽

2016 ◽

Vol 105 ◽

pp. 639-645 ◽

Cited By ~ 13

Author(s):

Mohamed Ghazy ◽

Ahmed A. Askalany ◽

K. Harby ◽

Mahmoud S. Ahmed

Keyword(s):

Activated Carbon ◽

Adsorption Isotherms ◽

Granular Activated Carbon ◽

Adsorption Isotherms And Kinetics ◽

Kinetics Of

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Modeling of adsorption isotherms and kinetics of reactive dye from aqueous solution by peanut hull

Chemical Engineering Journal ◽

10.1016/j.cej.2011.02.021 ◽

2011 ◽

Vol 168 (3) ◽

pp. 1234-1240 ◽

Cited By ~ 166

Author(s):

M. Şaban Tanyildizi

Keyword(s):

Aqueous Solution ◽

Adsorption Isotherms ◽

Reactive Dye ◽

Adsorption Isotherms And Kinetics ◽

Peanut Hull ◽

Modeling Of Adsorption ◽

Kinetics Of

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Adsorption Isotherms and Kinetics of Pb (II) and Cd (II) Ions onto Carbonised Sugarcane Bagasse

Advances in Biochemistry ◽

10.11648/j.ab.20210903.12 ◽

2021 ◽

Vol 9 (3) ◽

pp. 44

Author(s):

Oklo Ahola David ◽

Enenche Elaigwu Daniel ◽

Adie Agorye Peter ◽

Enyi Ogor Simeon

Keyword(s):

Sugarcane Bagasse ◽

Adsorption Isotherms ◽

Adsorption Isotherms And Kinetics ◽

Kinetics Of

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Sugarcane Bagasse as an Efficient Biosorbent for Methylene Blue Removal: Kinetics, Isotherms and Thermodynamics

International Journal of Environmental Research and Public Health ◽

10.3390/ijerph17020526 ◽

2020 ◽

Vol 17 (2) ◽

pp. 526 ◽

Cited By ~ 4

Author(s):

Thaisa Caroline Andrade Siqueira ◽

Isabella Zanette da Silva ◽

Andressa Jenifer Rubio ◽

Rosângela Bergamasco ◽

Francielli Gasparotto ◽

...

Keyword(s):

Methylene Blue ◽

Sugarcane Bagasse ◽

Adsorption Isotherms ◽

Low Cost ◽

Cost Effective ◽

Blue Dye ◽

Maximum Adsorption Capacity ◽

Effective Option ◽

Pseudo Second Order ◽

Isotherms And Thermodynamics

Adsorption in biomass has proven to be a cost-effective option for treatment of wastewater containing dyes and other pollutants, as it is a simple and low cost technique and does not require high initial investments. The present work aimed to study the adsorption of methylene blue dye (MB) using sugarcane bagasse (SCB). The biomass was characterized by scanning electron microscopy (SEM). Adsorption studies were conducted batchwise. Kinetics, adsorption isotherms, and thermodynamics were studied. The results showed that SCB presented a maximum adsorption capacity of 9.41 mg g−1 at 45 °C after 24 h of contact time. Adsorption kinetics data better fitted the pseudo-second order model, indicating a chemical process was involved. The Sips’s three-parameter isotherm model was better for adjusting the data obtained for the adsorption isotherms, indicating a heterogeneous adsorption process. The process showed to be endothermic, spontaneous, and feasible. Therefore, it was concluded that SCB presented as a potential biosorbent material for the treatment of MB-contaminated waters.

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