Removal of methylene blue by porous biochar obtained by KOH activation from bamboo biochar
Abstract A series of activated biochar (KBBC-700, KBBC-800 and KBBC-900) which were modified by KOH and pyrolysis at various temperatures from ball-milling bamboo powder were obtained. The physicochemical properties and pore structures of activated biochar were investigated by scanning electron micr...
| Main Authors: | , , , , , , |
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| Format: | Article |
| Language: | English |
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SpringerOpen
2023-08-01
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| Series: | Bioresources and Bioprocessing |
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| Online Access: | https://doi.org/10.1186/s40643-023-00671-2 |
| _version_ | 1797454081140195328 |
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| author | Qing Ge Peng Li Miao Liu Guo-ming Xiao Zhu-qian Xiao Jian-wei Mao Xi-kun Gai |
| author_facet | Qing Ge Peng Li Miao Liu Guo-ming Xiao Zhu-qian Xiao Jian-wei Mao Xi-kun Gai |
| author_sort | Qing Ge |
| collection | DOAJ |
| description | Abstract A series of activated biochar (KBBC-700, KBBC-800 and KBBC-900) which were modified by KOH and pyrolysis at various temperatures from ball-milling bamboo powder were obtained. The physicochemical properties and pore structures of activated biochar were investigated by scanning electron microscopy (SEM), fourier transform infrared spectoscopy (FT-IR), X-ray diffraction (XRD) and N2 adsorption/desorption. The adsorption performance for the removal of methylene blue (MB) was deeply studied. The results showed that KBBC-900 obtained at activation temperature of 900 °C exhibited a great surface area which reached 562 m2/g with 0.460 cm3/g of total pore volume. The enhancement of adsorption capacity could be ascribed to the increase of surface oxygen-containing functional groups, aromatization and mesoporous channels. The adsorption capacity was up to 67.46 mg/g under the optimum adsorption parameters with 2 g/L of adsorbent dose, 11 of initial solution pH and 298 K of the reactive temperature. The adsorption capacity was 70.63% of the first time after the material was recycled for three cycles. The kinetics indicated that the adsorption equilibrium time for MB on KBBC-900 was of about 20 min with the data fitted better to the pseudo-second-order kinetics model. The adsorption process was mainly dominated by chemical adsorption. Meanwhile, the adsorption isotherm showed that the Langmuir model fitted the best, and thermodynamic parameters revealed that the adsorption reaction was the endothermic nature and the spontaneous process. Adsorption of MB mainly attributed to electrostatic interactions, cation-π electron interaction and redox reaction. This study suggested that the activated biochar obtained by KOH activation from bamboo biochar has great potentials in the practical application to remove MB from wastewater. Graphical Abstract |
| first_indexed | 2024-03-09T15:32:06Z |
| format | Article |
| id | doaj.art-5e4c19d2db744a44bbfce3f7833aa606 |
| institution | Directory Open Access Journal |
| issn | 2197-4365 |
| language | English |
| last_indexed | 2024-03-09T15:32:06Z |
| publishDate | 2023-08-01 |
| publisher | SpringerOpen |
| record_format | Article |
| series | Bioresources and Bioprocessing |
| spelling | doaj.art-5e4c19d2db744a44bbfce3f7833aa6062023-11-26T12:11:12ZengSpringerOpenBioresources and Bioprocessing2197-43652023-08-0110111410.1186/s40643-023-00671-2Removal of methylene blue by porous biochar obtained by KOH activation from bamboo biocharQing Ge0Peng Li1Miao Liu2Guo-ming Xiao3Zhu-qian Xiao4Jian-wei Mao5Xi-kun Gai6Zhejiang Provincial Collaborative Innovation Center of Agricultural Biological Resources Biochemical Manufacturing, Key Laboratory of Chemical and Biological Processing Technology for Farm Products of Zhejiang Province, School of Biological and Chemical Engineering, Zhejiang University of Science and TechnologyZhejiang Provincial Collaborative Innovation Center of Agricultural Biological Resources Biochemical Manufacturing, Key Laboratory of Chemical and Biological Processing Technology for Farm Products of Zhejiang Province, School of Biological and Chemical Engineering, Zhejiang University of Science and TechnologyZhejiang Provincial Collaborative Innovation Center of Agricultural Biological Resources Biochemical Manufacturing, Key Laboratory of Chemical and Biological Processing Technology for Farm Products of Zhejiang Province, School of Biological and Chemical Engineering, Zhejiang University of Science and TechnologyZhejiang Provincial Collaborative Innovation Center of Agricultural Biological Resources Biochemical Manufacturing, Key Laboratory of Chemical and Biological Processing Technology for Farm Products of Zhejiang Province, School of Biological and Chemical Engineering, Zhejiang University of Science and TechnologyZhejiang Provincial Collaborative Innovation Center of Agricultural Biological Resources Biochemical Manufacturing, Key Laboratory of Chemical and Biological Processing Technology for Farm Products of Zhejiang Province, School of Biological and Chemical Engineering, Zhejiang University of Science and TechnologyZhejiang Provincial Collaborative Innovation Center of Agricultural Biological Resources Biochemical Manufacturing, Key Laboratory of Chemical and Biological Processing Technology for Farm Products of Zhejiang Province, School of Biological and Chemical Engineering, Zhejiang University of Science and TechnologyZhejiang Provincial Collaborative Innovation Center of Agricultural Biological Resources Biochemical Manufacturing, Key Laboratory of Chemical and Biological Processing Technology for Farm Products of Zhejiang Province, School of Biological and Chemical Engineering, Zhejiang University of Science and TechnologyAbstract A series of activated biochar (KBBC-700, KBBC-800 and KBBC-900) which were modified by KOH and pyrolysis at various temperatures from ball-milling bamboo powder were obtained. The physicochemical properties and pore structures of activated biochar were investigated by scanning electron microscopy (SEM), fourier transform infrared spectoscopy (FT-IR), X-ray diffraction (XRD) and N2 adsorption/desorption. The adsorption performance for the removal of methylene blue (MB) was deeply studied. The results showed that KBBC-900 obtained at activation temperature of 900 °C exhibited a great surface area which reached 562 m2/g with 0.460 cm3/g of total pore volume. The enhancement of adsorption capacity could be ascribed to the increase of surface oxygen-containing functional groups, aromatization and mesoporous channels. The adsorption capacity was up to 67.46 mg/g under the optimum adsorption parameters with 2 g/L of adsorbent dose, 11 of initial solution pH and 298 K of the reactive temperature. The adsorption capacity was 70.63% of the first time after the material was recycled for three cycles. The kinetics indicated that the adsorption equilibrium time for MB on KBBC-900 was of about 20 min with the data fitted better to the pseudo-second-order kinetics model. The adsorption process was mainly dominated by chemical adsorption. Meanwhile, the adsorption isotherm showed that the Langmuir model fitted the best, and thermodynamic parameters revealed that the adsorption reaction was the endothermic nature and the spontaneous process. Adsorption of MB mainly attributed to electrostatic interactions, cation-π electron interaction and redox reaction. This study suggested that the activated biochar obtained by KOH activation from bamboo biochar has great potentials in the practical application to remove MB from wastewater. Graphical Abstracthttps://doi.org/10.1186/s40643-023-00671-2Bamboo biocharActivationMethylene blueAdsorptionRemoval performance |
| spellingShingle | Qing Ge Peng Li Miao Liu Guo-ming Xiao Zhu-qian Xiao Jian-wei Mao Xi-kun Gai Removal of methylene blue by porous biochar obtained by KOH activation from bamboo biochar Bioresources and Bioprocessing Bamboo biochar Activation Methylene blue Adsorption Removal performance |
| title | Removal of methylene blue by porous biochar obtained by KOH activation from bamboo biochar |
| title_full | Removal of methylene blue by porous biochar obtained by KOH activation from bamboo biochar |
| title_fullStr | Removal of methylene blue by porous biochar obtained by KOH activation from bamboo biochar |
| title_full_unstemmed | Removal of methylene blue by porous biochar obtained by KOH activation from bamboo biochar |
| title_short | Removal of methylene blue by porous biochar obtained by KOH activation from bamboo biochar |
| title_sort | removal of methylene blue by porous biochar obtained by koh activation from bamboo biochar |
| topic | Bamboo biochar Activation Methylene blue Adsorption Removal performance |
| url | https://doi.org/10.1186/s40643-023-00671-2 |
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