Biosorption optimization and mechanism of biochar from exhausted coffee husk on iron in aqueous solution using response surface methodology
The primary goal of the current research was predicting the optimum operational parameters for removing of Fe (II) from aqueous solutions by Exhausted Coffee Husk (ECH) biochar, through batch mode experiments using a Box-Behnken Design (BBD) within a Response Surface Methodology (RSM) framework. The...
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Elsevier
2024-12-01
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| Series: | Case Studies in Chemical and Environmental Engineering |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S266601642400210X |
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| author | Aninda T. Puari Arti Azora Rusnam Rusnam Nika R. Yanti |
| author_facet | Aninda T. Puari Arti Azora Rusnam Rusnam Nika R. Yanti |
| author_sort | Aninda T. Puari |
| collection | DOAJ |
| description | The primary goal of the current research was predicting the optimum operational parameters for removing of Fe (II) from aqueous solutions by Exhausted Coffee Husk (ECH) biochar, through batch mode experiments using a Box-Behnken Design (BBD) within a Response Surface Methodology (RSM) framework. The effect operational factors for instance, pH, contact time and the dosage of ECH-biochar were investigated in a certain range, prior to conducting the BBD experiments. The pH was in a range of 4–9, while the contact time was in between 30 and 150 minutes and the dosage 0.05–2.5 g. The results showed that the optimum operational parameters for ECH biochar as biosorbent for Fe ions removal were 7, 0.102 g, 54.49 minutes for pH, contact time and dosage, respectively, with the RE and biosorption capacity (qt) were 99.91 % and 73.09 mg/g. The validation test showed the similar results were obtained for RE and qt with %RSD were 0.7 %. The process of Fe biosorption corresponds effectively with a modified Langmuir isotherm model, and the prediction of the rate constant is reliably achieved using the pseudo-second-order kinetic model. Furthermore, analyses of scanning electron microscopy-energy dispersive X-ray spectroscopy (SEM-EDX) and X-ray diffraction (XRD) showed ion exchange as the Fe removal mechanism by the ECH-BC, while Fourier-transform infrared spectroscopy (FT-IR) also showed the role of structural alterations on the surface of ECH-BC subsequent to the biosorption of Fe. |
| format | Article |
| id | doaj-art-2652fc1d3cfb4d6ebbd8e19cd44e60b8 |
| institution | Kabale University |
| issn | 2666-0164 |
| language | English |
| publishDate | 2024-12-01 |
| publisher | Elsevier |
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| series | Case Studies in Chemical and Environmental Engineering |
| spelling | doaj-art-2652fc1d3cfb4d6ebbd8e19cd44e60b82024-12-02T05:05:39ZengElsevierCase Studies in Chemical and Environmental Engineering2666-01642024-12-0110100816Biosorption optimization and mechanism of biochar from exhausted coffee husk on iron in aqueous solution using response surface methodologyAninda T. Puari0Arti Azora1Rusnam Rusnam2Nika R. Yanti3Corresponding author. Corresponding author.; Department of Agricultural and Biosystem Engineering, Faculty of Agricultural Technology, Universitas Andalas, West Sumatera, IndonesiaDepartment of Agricultural and Biosystem Engineering, Faculty of Agricultural Technology, Universitas Andalas, West Sumatera, IndonesiaDepartment of Agricultural and Biosystem Engineering, Faculty of Agricultural Technology, Universitas Andalas, West Sumatera, IndonesiaDepartment of Agricultural and Biosystem Engineering, Faculty of Agricultural Technology, Universitas Andalas, West Sumatera, IndonesiaThe primary goal of the current research was predicting the optimum operational parameters for removing of Fe (II) from aqueous solutions by Exhausted Coffee Husk (ECH) biochar, through batch mode experiments using a Box-Behnken Design (BBD) within a Response Surface Methodology (RSM) framework. The effect operational factors for instance, pH, contact time and the dosage of ECH-biochar were investigated in a certain range, prior to conducting the BBD experiments. The pH was in a range of 4–9, while the contact time was in between 30 and 150 minutes and the dosage 0.05–2.5 g. The results showed that the optimum operational parameters for ECH biochar as biosorbent for Fe ions removal were 7, 0.102 g, 54.49 minutes for pH, contact time and dosage, respectively, with the RE and biosorption capacity (qt) were 99.91 % and 73.09 mg/g. The validation test showed the similar results were obtained for RE and qt with %RSD were 0.7 %. The process of Fe biosorption corresponds effectively with a modified Langmuir isotherm model, and the prediction of the rate constant is reliably achieved using the pseudo-second-order kinetic model. Furthermore, analyses of scanning electron microscopy-energy dispersive X-ray spectroscopy (SEM-EDX) and X-ray diffraction (XRD) showed ion exchange as the Fe removal mechanism by the ECH-BC, while Fourier-transform infrared spectroscopy (FT-IR) also showed the role of structural alterations on the surface of ECH-BC subsequent to the biosorption of Fe.http://www.sciencedirect.com/science/article/pii/S266601642400210XBox behnken design (BBD)Coffee wasteContact timeDosagepH |
| spellingShingle | Aninda T. Puari Arti Azora Rusnam Rusnam Nika R. Yanti Biosorption optimization and mechanism of biochar from exhausted coffee husk on iron in aqueous solution using response surface methodology Case Studies in Chemical and Environmental Engineering Box behnken design (BBD) Coffee waste Contact time Dosage pH |
| title | Biosorption optimization and mechanism of biochar from exhausted coffee husk on iron in aqueous solution using response surface methodology |
| title_full | Biosorption optimization and mechanism of biochar from exhausted coffee husk on iron in aqueous solution using response surface methodology |
| title_fullStr | Biosorption optimization and mechanism of biochar from exhausted coffee husk on iron in aqueous solution using response surface methodology |
| title_full_unstemmed | Biosorption optimization and mechanism of biochar from exhausted coffee husk on iron in aqueous solution using response surface methodology |
| title_short | Biosorption optimization and mechanism of biochar from exhausted coffee husk on iron in aqueous solution using response surface methodology |
| title_sort | biosorption optimization and mechanism of biochar from exhausted coffee husk on iron in aqueous solution using response surface methodology |
| topic | Box behnken design (BBD) Coffee waste Contact time Dosage pH |
| url | http://www.sciencedirect.com/science/article/pii/S266601642400210X |
| work_keys_str_mv | AT anindatpuari biosorptionoptimizationandmechanismofbiocharfromexhaustedcoffeehuskonironinaqueoussolutionusingresponsesurfacemethodology AT artiazora biosorptionoptimizationandmechanismofbiocharfromexhaustedcoffeehuskonironinaqueoussolutionusingresponsesurfacemethodology AT rusnamrusnam biosorptionoptimizationandmechanismofbiocharfromexhaustedcoffeehuskonironinaqueoussolutionusingresponsesurfacemethodology AT nikaryanti biosorptionoptimizationandmechanismofbiocharfromexhaustedcoffeehuskonironinaqueoussolutionusingresponsesurfacemethodology |