Synthesis and application of treated activated carbon for cationic dye removal from modelled aqueous solution
Use of activated carbon (AC) prepared from rice husk and treated with anionic surfactant is investigated to eliminate cationic dye crystal violet (CV) using modelled dye solution. AC modified with anionic surfactant sodium lauryl sulfate (ACSLS) and other two surfactant namely sodium dodecyl sulfona...
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| Format: | Article |
| Language: | English |
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Elsevier
2022-11-01
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| Series: | Arabian Journal of Chemistry |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S1878535222006062 |
| _version_ | 1829455745173684224 |
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| author | Rumi Goswami Amit Kumar Dey |
| author_facet | Rumi Goswami Amit Kumar Dey |
| author_sort | Rumi Goswami |
| collection | DOAJ |
| description | Use of activated carbon (AC) prepared from rice husk and treated with anionic surfactant is investigated to eliminate cationic dye crystal violet (CV) using modelled dye solution. AC modified with anionic surfactant sodium lauryl sulfate (ACSLS) and other two surfactant namely sodium dodecyl sulfonate and hexadecyl trimethyl ammonium bromide were used for the analysis. Optimum ACSLS was analyzed and characterized using BET, XRD, SEM accompanied with XEDS, FTIR, HR-TEM and zeta potential, which confirms the sorption of CV onto ACSLS. Influence of pH, dose of adsorbent, concentration of initial dye, contact time, additive salts as well as actual water samples were investigated. Presence of NH4+, Ca2+, Mg2+, Na2+, Ca2+ and K+ cations in dye solution were having negligible (less than 4 %) influence on dye removal capacity. Study of mass transfer parameters revealed intra particle diffusion and film diffusion both played their part, whereas other kinetic studies has shown that experimental data fitted best with Pseudo 2nd order rate. Isotherm studies accompanied with error analysis revealed that Langmuir isotherm controls the adsorption equilibrium with highest capacity of CV adsorption with optimum operating conditions as pH = 6, temperature = 318 K, adsorbent dose = 100 mg/L and dye concentration = 30–60 mg/L. Study of thermodynamics and temperature analysis have shown that the sorption reaction was favourable and spontaneous with rise in temperature and endothermic in nature. Column studies are reported for varying rate of flow, depth of bed and dye concentrations along with analysis of column experimental data with various models like Yoon-Nelson, Thomas, Bohart-Adam and Clark model. Reusability (no. of cycles) of used adsorbent was studied using regeneration experiments. Analysis inferred that AC modified using surfactants can be a useful technique for enhanced adsorption capacity of dyes from aqueous solution and not much work has been reported on use of anionic surfactant modified AC for dye removal process. |
| first_indexed | 2024-04-11T08:36:54Z |
| format | Article |
| id | doaj.art-9f026a67d42545099bbb5575096265a7 |
| institution | Directory Open Access Journal |
| issn | 1878-5352 |
| language | English |
| last_indexed | 2024-04-11T08:36:54Z |
| publishDate | 2022-11-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Arabian Journal of Chemistry |
| spelling | doaj.art-9f026a67d42545099bbb5575096265a72022-12-22T04:34:19ZengElsevierArabian Journal of Chemistry1878-53522022-11-011511104290Synthesis and application of treated activated carbon for cationic dye removal from modelled aqueous solutionRumi Goswami0Amit Kumar Dey1Department of Civil Engineering, Central Institute of Technology Kokrajhar, Assam 783370, IndiaCorresponding author.; Department of Civil Engineering, Central Institute of Technology Kokrajhar, Assam 783370, IndiaUse of activated carbon (AC) prepared from rice husk and treated with anionic surfactant is investigated to eliminate cationic dye crystal violet (CV) using modelled dye solution. AC modified with anionic surfactant sodium lauryl sulfate (ACSLS) and other two surfactant namely sodium dodecyl sulfonate and hexadecyl trimethyl ammonium bromide were used for the analysis. Optimum ACSLS was analyzed and characterized using BET, XRD, SEM accompanied with XEDS, FTIR, HR-TEM and zeta potential, which confirms the sorption of CV onto ACSLS. Influence of pH, dose of adsorbent, concentration of initial dye, contact time, additive salts as well as actual water samples were investigated. Presence of NH4+, Ca2+, Mg2+, Na2+, Ca2+ and K+ cations in dye solution were having negligible (less than 4 %) influence on dye removal capacity. Study of mass transfer parameters revealed intra particle diffusion and film diffusion both played their part, whereas other kinetic studies has shown that experimental data fitted best with Pseudo 2nd order rate. Isotherm studies accompanied with error analysis revealed that Langmuir isotherm controls the adsorption equilibrium with highest capacity of CV adsorption with optimum operating conditions as pH = 6, temperature = 318 K, adsorbent dose = 100 mg/L and dye concentration = 30–60 mg/L. Study of thermodynamics and temperature analysis have shown that the sorption reaction was favourable and spontaneous with rise in temperature and endothermic in nature. Column studies are reported for varying rate of flow, depth of bed and dye concentrations along with analysis of column experimental data with various models like Yoon-Nelson, Thomas, Bohart-Adam and Clark model. Reusability (no. of cycles) of used adsorbent was studied using regeneration experiments. Analysis inferred that AC modified using surfactants can be a useful technique for enhanced adsorption capacity of dyes from aqueous solution and not much work has been reported on use of anionic surfactant modified AC for dye removal process.http://www.sciencedirect.com/science/article/pii/S1878535222006062AdsorptionIsosteric heat of adsorptionSurfactant modified activated carbonColumn analysisCrystal violetRegeneration |
| spellingShingle | Rumi Goswami Amit Kumar Dey Synthesis and application of treated activated carbon for cationic dye removal from modelled aqueous solution Arabian Journal of Chemistry Adsorption Isosteric heat of adsorption Surfactant modified activated carbon Column analysis Crystal violet Regeneration |
| title | Synthesis and application of treated activated carbon for cationic dye removal from modelled aqueous solution |
| title_full | Synthesis and application of treated activated carbon for cationic dye removal from modelled aqueous solution |
| title_fullStr | Synthesis and application of treated activated carbon for cationic dye removal from modelled aqueous solution |
| title_full_unstemmed | Synthesis and application of treated activated carbon for cationic dye removal from modelled aqueous solution |
| title_short | Synthesis and application of treated activated carbon for cationic dye removal from modelled aqueous solution |
| title_sort | synthesis and application of treated activated carbon for cationic dye removal from modelled aqueous solution |
| topic | Adsorption Isosteric heat of adsorption Surfactant modified activated carbon Column analysis Crystal violet Regeneration |
| url | http://www.sciencedirect.com/science/article/pii/S1878535222006062 |
| work_keys_str_mv | AT rumigoswami synthesisandapplicationoftreatedactivatedcarbonforcationicdyeremovalfrommodelledaqueoussolution AT amitkumardey synthesisandapplicationoftreatedactivatedcarbonforcationicdyeremovalfrommodelledaqueoussolution |