磷酸活化法制备糠醛渣活性炭的研究

doi:10.3969/j.issn.1673-5854.2015.03.005

Abstract

Abstract: With iodine adsorption value, methylene blue adsorption value, and yield as analyzing indexes of activated carbon prepared from furfural residue, four factors had been chosen to perform L₁₆(4⁵)orthogonal experiment including impregnation ratio, phosphoric acid concentration, activation temperature and holding time to optimize the preparation conditions of phosphoric acid activation.The conclusion could be drawn from the orthogonal experiment that the optimal technological conditions were phosphoric acid concentration 60%, impregnation ratio 2.5:1, activation temperature 550 ℃, and holding time 1.5 h.Under these conditions, the iodine adsorption value of the obtained activated carbon was 839.6 mg/g, the methylene blue adsorption value was 260.3 mg/g, the yield was 46.8%, and the specific surface area was 830.20 m²/g.

Key words: furfural residues, activated carbon, phosphoric acid activation, orthogonal experiments

CLC Number:

TQ35

YANG Qiao-wen, CHEN Si, LI Peng-fei. Preparation of Activated Carbon from Furfural Residues by Phosphoric Acid Activation[J]. bce, 2015, 49(3): 23-26.

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Preparation of Activated Carbon from Furfural Residues by Phosphoric Acid Activation

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