USING THOMAS MODEL TO EVALUATE DYE REMOVAL FROM AQUEOUS SOLUTIONS IN FIXED-BED COLUMNS OF ACTIVATED CARBON

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HADI MAHDI; SAMARGHANDI MOHAMMAD REZA; AZIZIAN SAEED; TAGHI SAMADI MOHAMMAD; SHOKOOHI REZA; RAHMANI ALIREZA

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Journal: WATER AND WASTEWATER Year:2011 | Volume:22 | Issue:1 (77) Page(s): 23-34

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Title

USING THOMAS MODEL TO EVALUATE DYE REMOVAL FROM AQUEOUS SOLUTIONS IN FIXED-BED COLUMNS OF ACTIVATED CARBON

Author(s)

Keywords

DYE ADSORPTIONQ3

FIXED –BED COLUMNQ3

THOMAS MODELQ3

ACIDIC DYESQ3

Abstract

For the purposes of this study, activated carbon was derived from pine-cone by a chemical-thermal process.Initially, its chemical and physical properties were determined before it was used for the removal of Acid Black 1 and Acid Blue 113 dyes. A batch sorption study was carried out in order to obtain the optimum isotherm model. The monolayer maximum saturation capacities of AB1 and AB113 dyes based on Langmuir isotherm model were determined to be 458 mg dye/g carbon and 286 mg dye/g carbon, respectively. Adsorption of dyes was also studied in a continuous-flow state using a fixed-bed column of activated carbon. The effects of operating variables such as flow rate, bed depth, and dye concentration on the column operation were studied.Data confirmed that the breakthrough curves depended on flow rate, bed depth, and initial dye concentration.Column behavior was investigated using THOMAS MODEL and model parameters were determined by a non-linear regression method. The Langmuir and Freundlich isotherm models were used to fit the experimental data. The best fit of the adsorption isotherm data was obtained using the Langmuir model for both dyes. The results showed that THOMAS MODEL was suitable for the description of breakthrough curves under the experimental condition. The column adsorption capacity was also compared with equilibrium adsorption capacities for each dye.

Cites

KINETIC SIMULATION OF HEXAVALENT CHROMIUM ADSORPTION ON GRANULAR ACTIVATED CARBON COLUMNS FROM CONTINUOUS FLOW OF WATER

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APA: Copy

HADI, MAHDI, SAMARGHANDI, MOHAMMAD REZA, AZIZIAN, SAEED, TAGHI SAMADI, MOHAMMAD, SHOKOOHI, REZA, & RAHMANI, ALIREZA. (2011). USING THOMAS MODEL TO EVALUATE DYE REMOVAL FROM AQUEOUS SOLUTIONS IN FIXED-BED COLUMNS OF ACTIVATED CARBON. WATER AND WASTEWATER, 22(1 (77)), 23-34. SID. https://sid.ir/paper/103517/en

Vancouver: Copy

HADI MAHDI, SAMARGHANDI MOHAMMAD REZA, AZIZIAN SAEED, TAGHI SAMADI MOHAMMAD, SHOKOOHI REZA, RAHMANI ALIREZA. USING THOMAS MODEL TO EVALUATE DYE REMOVAL FROM AQUEOUS SOLUTIONS IN FIXED-BED COLUMNS OF ACTIVATED CARBON. WATER AND WASTEWATER[Internet]. 2011;22(1 (77)):23-34. Available from: https://sid.ir/paper/103517/en

IEEE: Copy

MAHDI HADI, MOHAMMAD REZA SAMARGHANDI, SAEED AZIZIAN, MOHAMMAD TAGHI SAMADI, REZA SHOKOOHI, and ALIREZA RAHMANI, “USING THOMAS MODEL TO EVALUATE DYE REMOVAL FROM AQUEOUS SOLUTIONS IN FIXED-BED COLUMNS OF ACTIVATED CARBON,” WATER AND WASTEWATER, vol. 22, no. 1 (77), pp. 23–34, 2011, [Online]. Available: https://sid.ir/paper/103517/en

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