Comparative Study on Adsorption of Crystal Violet and Chromium (VI) by Activated Carbon Derived from Spent Coffee Grounds
In the context of the circular economy, used coffee grounds were transformed into powdered activated carbon by chemical activation using potassium hydroxide. Its characterisation was conducted in comparison with that of a commercial activated carbon by scanning electron microscopy (SEM) coupled with...
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MDPI AG
2023-01-01
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| Series: | Applied Sciences |
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| author | Ilyasse Loulidi Maria Jabri Abdelouahed Amar Abderahim Kali Awad A. Alrashdi Chaimaa Hadey Mbarka Ouchabi Palsan Sannasi Abdullah Hassane Lgaz Youngjae Cho Fatima Boukhlifi |
| author_facet | Ilyasse Loulidi Maria Jabri Abdelouahed Amar Abderahim Kali Awad A. Alrashdi Chaimaa Hadey Mbarka Ouchabi Palsan Sannasi Abdullah Hassane Lgaz Youngjae Cho Fatima Boukhlifi |
| author_sort | Ilyasse Loulidi |
| collection | DOAJ |
| description | In the context of the circular economy, used coffee grounds were transformed into powdered activated carbon by chemical activation using potassium hydroxide. Its characterisation was conducted in comparison with that of a commercial activated carbon by scanning electron microscopy (SEM) coupled with energy dispersive X-ray microanalysis (EDX), X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FTIR), Boehm titration, and point zero charge (pH<sub>PZC</sub>) and by determination of the methylene blue number (MBN) and the iodine number (IN). Performance of the prepared activated carbon was tested in the adsorption of the cationic dye crystal violet (CV) and hexavalent chromium. Batch adsorption tests were carried out and the effects of operating parameters were studied. The results collected on the adsorption kinetics show that the adsorption followed pseudo-second order kinetics and that the Langmuir isotherm best fits the equilibrium data for crystal violet and hexavalent chromium. The thermodynamic study showed that the adsorption of both adsorbates is spontaneous and exothermic and leads to a decrease in disorder at the solid–liquid interfaces. These results indicate that this activated carbon can be used as an alternative adsorbent to remove cationic dyes and heavy metals from aqueous solutions. |
| first_indexed | 2024-03-09T13:41:57Z |
| format | Article |
| id | doaj.art-0a8fd5271429436ba0032f6a1a5a95e9 |
| institution | Directory Open Access Journal |
| issn | 2076-3417 |
| language | English |
| last_indexed | 2024-03-09T13:41:57Z |
| publishDate | 2023-01-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Applied Sciences |
| spelling | doaj.art-0a8fd5271429436ba0032f6a1a5a95e92023-11-30T21:04:32ZengMDPI AGApplied Sciences2076-34172023-01-0113298510.3390/app13020985Comparative Study on Adsorption of Crystal Violet and Chromium (VI) by Activated Carbon Derived from Spent Coffee GroundsIlyasse Loulidi0Maria Jabri1Abdelouahed Amar2Abderahim Kali3Awad A. Alrashdi4Chaimaa Hadey5Mbarka Ouchabi6Palsan Sannasi Abdullah7Hassane Lgaz8Youngjae Cho9Fatima Boukhlifi10Laboratory of Chemistry and Biology Applied to the Environment, URL-CNRST-N°13, Faculty of Sciences, Moulay Ismail University, Meknes 50050, MoroccoLaboratory of Chemistry and Biology Applied to the Environment, URL-CNRST-N°13, Faculty of Sciences, Moulay Ismail University, Meknes 50050, MoroccoLaboratory of Chemistry and Biology Applied to the Environment, URL-CNRST-N°13, Faculty of Sciences, Moulay Ismail University, Meknes 50050, MoroccoLaboratory of Chemistry and Biology Applied to the Environment, URL-CNRST-N°13, Faculty of Sciences, Moulay Ismail University, Meknes 50050, MoroccoChemistry Department, Al-Qunfudah University College, Umm Al-Qura University, Mecca 24382, Saudi ArabiaLaboratory of Chemistry and Biology Applied to the Environment, URL-CNRST-N°13, Faculty of Sciences, Moulay Ismail University, Meknes 50050, MoroccoLaboratory of Catalysis and Corrosion of Materials, Faculty of Sciences, Chouaïb Doukkali University, El Jadida 24000, MoroccoFaculty of Agro-Based Industry, Universiti Malaysia, Kelantan Jeli Campus, Jeli Kelantan 17600, MalaysiaInnovative Durable Building and Infrastructure Research Center, Center for Creative Convergence Education, Hanyang University ERICA, 55 Hanyangdaehak-ro, Sangrok-gu, Ansan-si 15588, Republic of KoreaDepartment of Food Science and Technology, Pusan National University, 1268-50 Samrangjin-ro, Samrangjin-eup, Miryang 50463, Republic of KoreaLaboratory of Chemistry and Biology Applied to the Environment, URL-CNRST-N°13, Faculty of Sciences, Moulay Ismail University, Meknes 50050, MoroccoIn the context of the circular economy, used coffee grounds were transformed into powdered activated carbon by chemical activation using potassium hydroxide. Its characterisation was conducted in comparison with that of a commercial activated carbon by scanning electron microscopy (SEM) coupled with energy dispersive X-ray microanalysis (EDX), X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FTIR), Boehm titration, and point zero charge (pH<sub>PZC</sub>) and by determination of the methylene blue number (MBN) and the iodine number (IN). Performance of the prepared activated carbon was tested in the adsorption of the cationic dye crystal violet (CV) and hexavalent chromium. Batch adsorption tests were carried out and the effects of operating parameters were studied. The results collected on the adsorption kinetics show that the adsorption followed pseudo-second order kinetics and that the Langmuir isotherm best fits the equilibrium data for crystal violet and hexavalent chromium. The thermodynamic study showed that the adsorption of both adsorbates is spontaneous and exothermic and leads to a decrease in disorder at the solid–liquid interfaces. These results indicate that this activated carbon can be used as an alternative adsorbent to remove cationic dyes and heavy metals from aqueous solutions.https://www.mdpi.com/2076-3417/13/2/985spent coffee groundsactivated carbonadsorptionkineticisotherm |
| spellingShingle | Ilyasse Loulidi Maria Jabri Abdelouahed Amar Abderahim Kali Awad A. Alrashdi Chaimaa Hadey Mbarka Ouchabi Palsan Sannasi Abdullah Hassane Lgaz Youngjae Cho Fatima Boukhlifi Comparative Study on Adsorption of Crystal Violet and Chromium (VI) by Activated Carbon Derived from Spent Coffee Grounds Applied Sciences spent coffee grounds activated carbon adsorption kinetic isotherm |
| title | Comparative Study on Adsorption of Crystal Violet and Chromium (VI) by Activated Carbon Derived from Spent Coffee Grounds |
| title_full | Comparative Study on Adsorption of Crystal Violet and Chromium (VI) by Activated Carbon Derived from Spent Coffee Grounds |
| title_fullStr | Comparative Study on Adsorption of Crystal Violet and Chromium (VI) by Activated Carbon Derived from Spent Coffee Grounds |
| title_full_unstemmed | Comparative Study on Adsorption of Crystal Violet and Chromium (VI) by Activated Carbon Derived from Spent Coffee Grounds |
| title_short | Comparative Study on Adsorption of Crystal Violet and Chromium (VI) by Activated Carbon Derived from Spent Coffee Grounds |
| title_sort | comparative study on adsorption of crystal violet and chromium vi by activated carbon derived from spent coffee grounds |
| topic | spent coffee grounds activated carbon adsorption kinetic isotherm |
| url | https://www.mdpi.com/2076-3417/13/2/985 |
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