Coconut shell derived ZnCl2 activated carbon for malachite green dye removal
The coconut-based agricultural wastes have gained wide attention as an alternative adsorbent for the removal of diverse pollutants from the industrial effluents. This paper presents the zinc chloride activation of adsorbent carbon and the utilization as an adsorbent for the removal of malachite gree...
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| Format: | Article |
| Language: | English |
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IWA Publishing
2021-03-01
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| Series: | Water Science and Technology |
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| Online Access: | http://wst.iwaponline.com/content/83/5/1167 |
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| author | R. Sangeetha piriya Rajamani M. Jayabalakrishnan M. Maheswari Kovilpillai Boomiraj Sadish Oumabady |
| author_facet | R. Sangeetha piriya Rajamani M. Jayabalakrishnan M. Maheswari Kovilpillai Boomiraj Sadish Oumabady |
| author_sort | R. Sangeetha piriya |
| collection | DOAJ |
| description | The coconut-based agricultural wastes have gained wide attention as an alternative adsorbent for the removal of diverse pollutants from the industrial effluents. This paper presents the zinc chloride activation of adsorbent carbon and the utilization as an adsorbent for the removal of malachite green dye from aqueous solution. The characterisation of activated carbon was performed to get an insight into the adsorption mechanism. The ZnCl2 activated carbon acquired a higher specific surface area (544.66 m2 g−1) and stability (−32.6 mV). The impact of process parameters including contact time (20–220 min) and initial dye concentration (20–80 mg L−1) were evaluated on the effectiveness of activated carbon for dye removal. The results concluded that zinc chloride activated carbon showed a significant dye adsorption (39.683 mg g−1) at an initial concentration of 20 mg L−1 after 3 hours. Based on the correlation coefficient (R2), the Freundlich isotherm model (0.978–0.998) was best fitted for the experimental data followed by the intraparticle diffusion model (0.88–0.929) as the most appropriate model for malachite green dye removal. Additionally, the energy and thermogravimetric analysis portrayed the suitability of the carbon material to be used as an energy alternative to coal. |
| first_indexed | 2024-12-21T01:23:49Z |
| format | Article |
| id | doaj.art-2b6a65fd379d4e91be2e11df816fce7d |
| institution | Directory Open Access Journal |
| issn | 0273-1223 1996-9732 |
| language | English |
| last_indexed | 2024-12-21T01:23:49Z |
| publishDate | 2021-03-01 |
| publisher | IWA Publishing |
| record_format | Article |
| series | Water Science and Technology |
| spelling | doaj.art-2b6a65fd379d4e91be2e11df816fce7d2022-12-21T19:20:34ZengIWA PublishingWater Science and Technology0273-12231996-97322021-03-018351167118210.2166/wst.2021.050050Coconut shell derived ZnCl2 activated carbon for malachite green dye removalR. Sangeetha piriya0Rajamani M. Jayabalakrishnan1M. Maheswari2Kovilpillai Boomiraj3Sadish Oumabady4 Department of Environmental Sciences, Tamil Nadu Agricultural University, Coimbatore 641 003, India Department of Environmental Sciences, Tamil Nadu Agricultural University, Coimbatore 641 003, India Department of Environmental Sciences, Tamil Nadu Agricultural University, Coimbatore 641 003, India Department of Environmental Sciences, Tamil Nadu Agricultural University, Coimbatore 641 003, India Department of Environmental Sciences, Tamil Nadu Agricultural University, Coimbatore 641 003, India The coconut-based agricultural wastes have gained wide attention as an alternative adsorbent for the removal of diverse pollutants from the industrial effluents. This paper presents the zinc chloride activation of adsorbent carbon and the utilization as an adsorbent for the removal of malachite green dye from aqueous solution. The characterisation of activated carbon was performed to get an insight into the adsorption mechanism. The ZnCl2 activated carbon acquired a higher specific surface area (544.66 m2 g−1) and stability (−32.6 mV). The impact of process parameters including contact time (20–220 min) and initial dye concentration (20–80 mg L−1) were evaluated on the effectiveness of activated carbon for dye removal. The results concluded that zinc chloride activated carbon showed a significant dye adsorption (39.683 mg g−1) at an initial concentration of 20 mg L−1 after 3 hours. Based on the correlation coefficient (R2), the Freundlich isotherm model (0.978–0.998) was best fitted for the experimental data followed by the intraparticle diffusion model (0.88–0.929) as the most appropriate model for malachite green dye removal. Additionally, the energy and thermogravimetric analysis portrayed the suitability of the carbon material to be used as an energy alternative to coal.http://wst.iwaponline.com/content/83/5/1167coconut shellisotherm studykineticsmalachite green adsorptionzncl2 activation |
| spellingShingle | R. Sangeetha piriya Rajamani M. Jayabalakrishnan M. Maheswari Kovilpillai Boomiraj Sadish Oumabady Coconut shell derived ZnCl2 activated carbon for malachite green dye removal Water Science and Technology coconut shell isotherm study kinetics malachite green adsorption zncl2 activation |
| title | Coconut shell derived ZnCl2 activated carbon for malachite green dye removal |
| title_full | Coconut shell derived ZnCl2 activated carbon for malachite green dye removal |
| title_fullStr | Coconut shell derived ZnCl2 activated carbon for malachite green dye removal |
| title_full_unstemmed | Coconut shell derived ZnCl2 activated carbon for malachite green dye removal |
| title_short | Coconut shell derived ZnCl2 activated carbon for malachite green dye removal |
| title_sort | coconut shell derived zncl2 activated carbon for malachite green dye removal |
| topic | coconut shell isotherm study kinetics malachite green adsorption zncl2 activation |
| url | http://wst.iwaponline.com/content/83/5/1167 |
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