Abstract:

Activated carbon derived from sheep bones was prepared，its adsorption for Pb（II）was investigated by varying adsorption time，initial concentration，activated carbon dosage and pH value. The adsorption was found to follow Langmuir isotherm & Freundlich isotherm equations. Results showed that the Pb(Ⅱ) removal ratio from solution by activated carbon from sheep bones was over 99% when the initial Pb(Ⅱ) concentration was 80mg/L with 0.10g activated carbon dosage at 45℃ and adsorption time for 6 h. The adsorption isotherm curve partly accorded with the type Ⅱ multilayer isotherm in Brunauer 5 type isotherm equations.

摘要：

采用本实验室自制的羊骨基活性炭，研究其在不同吸附时间、不同溶液初始浓度、不同投加量、溶液不同的pH值条件下对Pb(Ⅱ) 的吸附规律。结果表明：当Pb（Ⅱ）溶液的初始浓度为80 mg/L、活性炭投加量为0.10 g、吸附时间为6 h、溶液温度为45 ℃时，羊骨基活性炭对Pb（Ⅱ）的去除率高达99%。利用Langmuir吸附等温模型和Freundlich吸附等温模型对其吸附性能的表征得出：羊骨基活性炭对溶液中Pb（Ⅱ）的吸附行为符合Langmuir吸附等温模型和Freundlich吸附等温模型，并且吸附等温曲线在Brunauer五种类型的等温吸附线中比较符合多分子层吸附等温线。