Phosphoric acid activation of agricultural residues and bagasse from sugar cane: Influence of the experimental conditions on adsorption characteristics of activated carbons
Activated carbons from two different types of sugar cane wastes, agricultural residues and bagasse, were prepared by phosphoric acid activation varying the carbonization temperature (300-600 °C), the weight ratio of phosphoric acid to precursor (R = 1-2.5), and carbonization time (0-3 h). Surface pr...
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2000
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| Acceso en línea: | https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_08885885_v39_n11_p4166_Castro http://hdl.handle.net/20.500.12110/paper_08885885_v39_n11_p4166_Castro |
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paper:paper_08885885_v39_n11_p4166_Castro2023-06-08T15:46:57Z Phosphoric acid activation of agricultural residues and bagasse from sugar cane: Influence of the experimental conditions on adsorption characteristics of activated carbons Adsorption Agricultural wastes Bagasse Carbonization Chemical activation Impregnation Phosphoric acid Porosity Sugar cane Surface properties Thermal effects Melanoidin Methylene blue Pore volume Surface area Activated carbon activated carbon bagasse phosphoric acid adsorption Argentina article effluent fermentation sugar industry surface property Activated carbons from two different types of sugar cane wastes, agricultural residues and bagasse, were prepared by phosphoric acid activation varying the carbonization temperature (300-600 °C), the weight ratio of phosphoric acid to precursor (R = 1-2.5), and carbonization time (0-3 h). Surface properties of the resulting carbons were markedly dependent on the precursor and a combined effect of the conditions employed. Bagasse carbons showed higher surface area and pore volume than those from agricultural residues. Maximum surface areas of around 1100 and 780 m2/g were respectively attained. Temperature above 500 °C, impregnation ratio higher than 2, or prolonged carbonization beyond 1 h led to reduction in porosity development. Selected carbons from both wastes with relatively large mean pore radius showed good ability to decolorize a diluted solution of synthetic melanoidin, used as a model of molasses wastewater. Iodine number between 608 and 746 and methylene blue uptake of 213-261 (mg/g) were determined for the selected samples. Activated carbons from two different types of sugar cane wastes, agricultural residues and bagasse, were prepared by phosphoric acid activation varying the carbonization temperature (300-600°C), the weight ratio of phosphoric acid to precursor (R = 1-2.5), and carbonization time (0-3 h). Surface properties of the resulting carbons were markedly dependent on the precursor and a combined effect of the conditions employed. Bagasse carbons showed higher surface area and pore volume than those from agricultural residues. Maximum surface areas of around 1100 and 780 m2/g were respectively attained. Temperature above 500°C, impregnation ratio higher than 2, or prolonged carbonization beyond 1 h led to reduction in porosity development. Selected carbons from both wastes with relatively large mean pore radius showed good ability to decolorize a diluted solution of synthetic melanoidin, used as a model of molasses wastewater. Iodine number between 608 and 746 and methylene blue uptake of 213-261 (mg/g) were determined for the selected samples. 2000 https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_08885885_v39_n11_p4166_Castro http://hdl.handle.net/20.500.12110/paper_08885885_v39_n11_p4166_Castro |
| institution |
Universidad de Buenos Aires |
| institution_str |
I-28 |
| repository_str |
R-134 |
| collection |
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) |
| topic |
Adsorption Agricultural wastes Bagasse Carbonization Chemical activation Impregnation Phosphoric acid Porosity Sugar cane Surface properties Thermal effects Melanoidin Methylene blue Pore volume Surface area Activated carbon activated carbon bagasse phosphoric acid adsorption Argentina article effluent fermentation sugar industry surface property |
| spellingShingle |
Adsorption Agricultural wastes Bagasse Carbonization Chemical activation Impregnation Phosphoric acid Porosity Sugar cane Surface properties Thermal effects Melanoidin Methylene blue Pore volume Surface area Activated carbon activated carbon bagasse phosphoric acid adsorption Argentina article effluent fermentation sugar industry surface property Phosphoric acid activation of agricultural residues and bagasse from sugar cane: Influence of the experimental conditions on adsorption characteristics of activated carbons |
| topic_facet |
Adsorption Agricultural wastes Bagasse Carbonization Chemical activation Impregnation Phosphoric acid Porosity Sugar cane Surface properties Thermal effects Melanoidin Methylene blue Pore volume Surface area Activated carbon activated carbon bagasse phosphoric acid adsorption Argentina article effluent fermentation sugar industry surface property |
| description |
Activated carbons from two different types of sugar cane wastes, agricultural residues and bagasse, were prepared by phosphoric acid activation varying the carbonization temperature (300-600 °C), the weight ratio of phosphoric acid to precursor (R = 1-2.5), and carbonization time (0-3 h). Surface properties of the resulting carbons were markedly dependent on the precursor and a combined effect of the conditions employed. Bagasse carbons showed higher surface area and pore volume than those from agricultural residues. Maximum surface areas of around 1100 and 780 m2/g were respectively attained. Temperature above 500 °C, impregnation ratio higher than 2, or prolonged carbonization beyond 1 h led to reduction in porosity development. Selected carbons from both wastes with relatively large mean pore radius showed good ability to decolorize a diluted solution of synthetic melanoidin, used as a model of molasses wastewater. Iodine number between 608 and 746 and methylene blue uptake of 213-261 (mg/g) were determined for the selected samples. Activated carbons from two different types of sugar cane wastes, agricultural residues and bagasse, were prepared by phosphoric acid activation varying the carbonization temperature (300-600°C), the weight ratio of phosphoric acid to precursor (R = 1-2.5), and carbonization time (0-3 h). Surface properties of the resulting carbons were markedly dependent on the precursor and a combined effect of the conditions employed. Bagasse carbons showed higher surface area and pore volume than those from agricultural residues. Maximum surface areas of around 1100 and 780 m2/g were respectively attained. Temperature above 500°C, impregnation ratio higher than 2, or prolonged carbonization beyond 1 h led to reduction in porosity development. Selected carbons from both wastes with relatively large mean pore radius showed good ability to decolorize a diluted solution of synthetic melanoidin, used as a model of molasses wastewater. Iodine number between 608 and 746 and methylene blue uptake of 213-261 (mg/g) were determined for the selected samples. |
| title |
Phosphoric acid activation of agricultural residues and bagasse from sugar cane: Influence of the experimental conditions on adsorption characteristics of activated carbons |
| title_short |
Phosphoric acid activation of agricultural residues and bagasse from sugar cane: Influence of the experimental conditions on adsorption characteristics of activated carbons |
| title_full |
Phosphoric acid activation of agricultural residues and bagasse from sugar cane: Influence of the experimental conditions on adsorption characteristics of activated carbons |
| title_fullStr |
Phosphoric acid activation of agricultural residues and bagasse from sugar cane: Influence of the experimental conditions on adsorption characteristics of activated carbons |
| title_full_unstemmed |
Phosphoric acid activation of agricultural residues and bagasse from sugar cane: Influence of the experimental conditions on adsorption characteristics of activated carbons |
| title_sort |
phosphoric acid activation of agricultural residues and bagasse from sugar cane: influence of the experimental conditions on adsorption characteristics of activated carbons |
| publishDate |
2000 |
| url |
https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_08885885_v39_n11_p4166_Castro http://hdl.handle.net/20.500.12110/paper_08885885_v39_n11_p4166_Castro |
| _version_ |
1768546498543353856 |