Production of activated carbon from bagasse and rice husk by a single-stage chemical activation method at low retention times.
The production of activated carbon from bagasse and rice husk by a single-stage chemical activation method in short retention times (30-60min) was examined in this study. The raw materials were subjected to a chemical pretreatment and were fed to the reactor in the form of a paste (75% moisture). Chemicals examined were ZnCl2, NaOH and H3PO4, for temperatures of 600, 700 and 800 degrees C. Of the three chemical reagents under evaluation only ZnCl2 produced activated carbons with high surface areas. BET surface areas for rice husk were up to 750m2/g for 1:1 ZnCl2:rice husk ratio. BET surface areas for bagasse were up to 674m2/g for 0.75:1 ZnCl2:bagasse ratio. Results were compared to regular two-stage physical activation methods.
Kalderis
Dimitrios
D
Department of Environmental Engineering, Technical University of Crete, 73 100 Chania, Greece.
Bethanis
Sophia
S
Paraskeva
Panagiota
P
Diamadopoulos
Evan
E
D002244:Carbon / Q000737:chemistry*; D002482:Cellulose / Q000737:chemistry*; D002712:Chlorides / Q000737:chemistry; D006358:Hot Temperature; D012275:Oryza / Q000737:chemistry*; D010756:Phosphoric Acids / Q000737:chemistry; D012972:Sodium Hydroxide / Q000737:chemistry; D017967:Zinc Compounds / Q000737:chemistry
D002712:Chlorides; D010756:Phosphoric Acids; D017967:Zinc Compounds; D012972:Sodium Hydroxide; D002244:Carbon; C016837:zinc chloride; D002482:Cellulose; C027433:bagasse; C030242:phosphoric acid