Preparation and characterization of bamboo-based activated carbon by phosphoric acid activation
Institute of Chemical Industry of Forest Products| CAF|National Engineering Lab. for Biomass Chemical Utilization|Key and Open Lab. on Forest Chemical Engineering, SFA|Key Lab. of Biomass Energy and Material, Jiangsu Province, Nanjing 210042, China|
Funds:
State Forestry Administration nonprofit industry-specific (201004051); “Eleventh Five-Year” National Key Technology Program (2009BADB1B03); Natural Science Foundation of Fujian Province (2011J01286).
Activated carbons were prepared from bamboo by phosphoric acid activation. Samples were characterized by N2 adsorption, Boehm titration, gas chromatograph-mass spectrometry, Fourier transform infrared spectroscopy and scanning electron microscopy. The adsorption capacity,specific surface area, pore structure, surface functional groups and microstructure of the bamboo-based activated carbon were compared with those of coconut shell-based activated carbon prepared by steam activation.Results showed that both activated carbons had almost similar acetate adsorption capacities, specific surface area and pore structure.Besides, the bamboo-based activated carbon had many more carboxyl, phenolic hydroxyl—COO-、—OH- 和P=O、 P—O—C andP=OOH groups than the coconut shell-based activated carbon.