Assessment of Untreated Coffee Wastes for the Removal of Chromium (VI) from Aqueous Medium
Industrial discharges loaded with heavy metals present several problems for aquatic ecosystems and human health. In this context, the present study aims to evaluate the potential of raw spent coffee grounds to remove chromium from an aqueous medium. A structural and textural study of coffee grounds...
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| Format: | Article |
| Language: | English |
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Wiley
2021-01-01
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| Series: | International Journal of Chemical Engineering |
| Online Access: | http://dx.doi.org/10.1155/2021/9977817 |
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| author | Ilyasse Loulidi Fatima Boukhlifi Mbarka Ouchabi Abdelouahed Amar Maria Jabri Abderahim Kali Chaimaa Hadey |
| author_facet | Ilyasse Loulidi Fatima Boukhlifi Mbarka Ouchabi Abdelouahed Amar Maria Jabri Abderahim Kali Chaimaa Hadey |
| author_sort | Ilyasse Loulidi |
| collection | DOAJ |
| description | Industrial discharges loaded with heavy metals present several problems for aquatic ecosystems and human health. In this context, the present study aims to evaluate the potential of raw spent coffee grounds to remove chromium from an aqueous medium. A structural and textural study of coffee grounds was carried out by FTIR, XRD, and TGA analysis. The optimum conditions for the removal of Cr(VI), for a solution with an initial concentration of 100 mg/l, were adsorbent dose 2.5 g/l, pH 4.0, and contact time 90 min. The adsorption equilibrium results show that the Langmuir isotherm best describes the process with an adsorption capacity of 42.9 mg/g and that the adsorption kinetics follows the pseudosecond-order model. The calculated thermodynamic parameters showed that the adsorption is exothermic and spontaneous. The activation energy value (Ea) indicated that the retention is physisorptive in nature. The regeneration of the adsorbent was carried out by three eluents, among which HCl was the best. Finally, a brief cost estimation showed the great potential of coffee grounds as a low-cost adsorbent. |
| format | Article |
| id | doaj-art-fe223e6fae5245a2bae40ecca3ce0041 |
| institution | Kabale University |
| issn | 1687-806X 1687-8078 |
| language | English |
| publishDate | 2021-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | International Journal of Chemical Engineering |
| spelling | doaj-art-fe223e6fae5245a2bae40ecca3ce00412025-08-20T03:25:47ZengWileyInternational Journal of Chemical Engineering1687-806X1687-80782021-01-01202110.1155/2021/99778179977817Assessment of Untreated Coffee Wastes for the Removal of Chromium (VI) from Aqueous MediumIlyasse Loulidi0Fatima Boukhlifi1Mbarka Ouchabi2Abdelouahed Amar3Maria Jabri4Abderahim Kali5Chaimaa Hadey6Laboratory of Chemistry and Biology Applied to the Environment, Faculty of Sciences, Moulay Ismail University, BP 11,201-Zitoune, Meknes, MoroccoLaboratory of Chemistry and Biology Applied to the Environment, Faculty of Sciences, Moulay Ismail University, BP 11,201-Zitoune, Meknes, MoroccoLaboratory of Catalysis and Corrosion of Materials, Chouaïb Doukkali University, Faculty of Sciences El Jadida, BP. 20, El Jadida, MoroccoLaboratory of Chemistry and Biology Applied to the Environment, Faculty of Sciences, Moulay Ismail University, BP 11,201-Zitoune, Meknes, MoroccoLaboratory of Chemistry and Biology Applied to the Environment, Faculty of Sciences, Moulay Ismail University, BP 11,201-Zitoune, Meknes, MoroccoLaboratory of Chemistry and Biology Applied to the Environment, Faculty of Sciences, Moulay Ismail University, BP 11,201-Zitoune, Meknes, MoroccoEngineering Sciences and Trades Laboratory, ENSAM, University Moulay Ismail, Meknes, MoroccoIndustrial discharges loaded with heavy metals present several problems for aquatic ecosystems and human health. In this context, the present study aims to evaluate the potential of raw spent coffee grounds to remove chromium from an aqueous medium. A structural and textural study of coffee grounds was carried out by FTIR, XRD, and TGA analysis. The optimum conditions for the removal of Cr(VI), for a solution with an initial concentration of 100 mg/l, were adsorbent dose 2.5 g/l, pH 4.0, and contact time 90 min. The adsorption equilibrium results show that the Langmuir isotherm best describes the process with an adsorption capacity of 42.9 mg/g and that the adsorption kinetics follows the pseudosecond-order model. The calculated thermodynamic parameters showed that the adsorption is exothermic and spontaneous. The activation energy value (Ea) indicated that the retention is physisorptive in nature. The regeneration of the adsorbent was carried out by three eluents, among which HCl was the best. Finally, a brief cost estimation showed the great potential of coffee grounds as a low-cost adsorbent.http://dx.doi.org/10.1155/2021/9977817 |
| spellingShingle | Ilyasse Loulidi Fatima Boukhlifi Mbarka Ouchabi Abdelouahed Amar Maria Jabri Abderahim Kali Chaimaa Hadey Assessment of Untreated Coffee Wastes for the Removal of Chromium (VI) from Aqueous Medium International Journal of Chemical Engineering |
| title | Assessment of Untreated Coffee Wastes for the Removal of Chromium (VI) from Aqueous Medium |
| title_full | Assessment of Untreated Coffee Wastes for the Removal of Chromium (VI) from Aqueous Medium |
| title_fullStr | Assessment of Untreated Coffee Wastes for the Removal of Chromium (VI) from Aqueous Medium |
| title_full_unstemmed | Assessment of Untreated Coffee Wastes for the Removal of Chromium (VI) from Aqueous Medium |
| title_short | Assessment of Untreated Coffee Wastes for the Removal of Chromium (VI) from Aqueous Medium |
| title_sort | assessment of untreated coffee wastes for the removal of chromium vi from aqueous medium |
| url | http://dx.doi.org/10.1155/2021/9977817 |
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