关键词: 竹炭, 吸附性能, 对硝基苯酚

Abstract: The adsorption ability of p-nitrophenol by bamboo-carbon was studied.The effects of various parameters such as particle size,pH value,adsorption time,absorbent dosage and adsorption temperature on p-nitrophenol adsorption efficiency of bamboo-carbon were investigated.The results showed that the adsorption ratio of p-nitrophenol and adsorption amount could reach 82.5% and 2.06 mg·g^-1,respectively,under the condition such as 10 ℃,p-nitrophenol concentration 50 mg·L^-1,bamboo-carbon size 0.106～0.090 mm,bamboo-carbon dosage 20.0 g·L^-1,adsorption time 120 min.The adsorption performance of bamboo-carbon was obviously affected by such parameters as particle size,adsorption time,bamboo-carbon dosage.The adsorption ratio was higher in acid solution than in neutral or alkaline solution.Higher temperature was not favorable to the adsorption of p-nitrophenol by bamboo-carbon.The adsorption behavior of the bamboo-carbon for p-nitrophenol obeys the Freundlich isotherm model.

Key words: bamboo-carbon, adsorption capability, p-nitrophenol