摘要
运用化学沉淀-原位复合法制得氢氧化镁/活性炭复合材料(Mg(OH)2/AC),对其比表面积和XRD谱进行了表征,考察了该复合材料对普拉红B的脱色性能。结果表明,在293-313 K下,Langmuir模型和Freundlich模型都能很好地描述Mg(OH)2/AC对普拉红B的等温吸附过程,而Langmuir模型更为合适。溶液初始浓度为250 mg/L,吸附剂用量为0.1 g,吸附时间为90 min,温度为313 K是Mg(OH)/AC吸附普拉红B的最佳条件。
Magnesium hydroxide/activated carbon composite was prepared by chemical precipitation compounding in situ.The surface area and poresize distribution of the composite were characterized.The removal of weak acid red B by the composite was investigated.Be superior to Freundlich model,Langmuir model fit to the adsorption of the dye at 293~313 K.Orthogonal experiments showed that the initial concentration of solution was the most important factor.The optimum adsorption effect was achieved under the following conditions: adsorption of solution with initial concentration of 250 mg/L at 313 K for 90 min by 0.1 g Mg(OH)2/AC.
出处
《环境工程学报》
CAS
CSCD
北大核心
2011年第2期261-266,共6页
Chinese Journal of Environmental Engineering
基金
国家自然科学基金资助项目(20477041)
关键词
氢氧化镁/活性炭复合材料
普拉红B
脱色
magnesium hydroxide/activated carbon composite
weak acid red B
color removal