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摘要：活性炭以其所具有的众多优点，在实际生活中有着很多的应用，本实验以芦苇为原料，采用不同的活化方法和浸渍比制备活性炭，对其比表面积和孔径分布进行表征，并利用制备的活性炭对污水中的壬基酚进行吸附，研究活性炭对壬基酚的吸附动力学，对其吸附性能的影响因素包括投加量、吸附时间、浸渍比等进行分析。结果表明：磷酸活化法制得的活性炭微孔较多、孔容大、比表面积大，对壬基酚的吸附能力强，最佳浸渍比 1:2,最佳投加量为 0.5g/L，90min 达到最大处理率。氢氧化钾活化法制得的活性炭孔径分布广，孔容和比表面积一般，对壬基酚的吸附能力一般，最佳浸渍比 1:2.5,最佳投加量为1g/L,30min 达到最大处理率。氯化锌活性炭活化法制得的孔径分布广，孔容和比表面积较优，对壬基酚的吸附能力较强，最佳浸渍比1:2.5, 最佳投加量为1g/L，60min达到最大处理率。吸附过程符合伪二级动力学模型。 51463
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毕业论文关键词：芦苇活性炭；壬基酚；影响因素；吸附机理
Study on Adsorption Properties of Activated Carbon for Nonylphenol Adviser:
Abstract: Activated carbon is widely used in the daily life due to its advantages. In this study, the reeds was utilized to prepare activated carbon using different activated methods and impregnation ratios. The specific surface area and pore size distributions of the activated carbon were analyzed. Then the activated carbon was used to adsorb the nonylphenol in the wastewater, and the adsorption kinetics was determined. Moreover, the impacts of the factors such as dosage, adsorption time and impregnation ratio on the adsorption efficiency were also investigated. The experimental results showed that activated carbon prepared by phosphoric acid had the smallest micropore and the best absorption capacity for nonylphenol. The optimal dosages of activated carbon prepared by phosphoric were 0.50g/L, and the optimal impregnation ratio was 1:2. After 90 minutes, the adsorption quantity of nonylphenol reached the maximum. Activated carbon prepared by potassium hydroxide had some micropores, but the surface area was smaller and the micropore was larger, and the absorption capacity for nonylphenol was normal. The optimal dosages of activated carbon prepared by potassium hydroxide were 1.00g/L, and the optimal impregnation ratio was 1:2.5. After 30 minutes, the adsorption quantity of nonylphenol reached the maximum. Activated carbon prepared by zinc chloride had many micropores, the value of surface area and micropore were on the middle scale, and the absorption capacity for nonylphenol was better. The optimal dosages of activated carbon prepared by zinc chloride was 1.00g/L, and the optimal impregnation ratio was 1:2.5. After 60 minutes, the adsorption quantity of nonylphenol reached the maximum. The three adsorption processes of activated carbon to nonylphenol were best fitted with the pseudo-second-order kinetic mode.
Keywords: Activated carbon; Nonylphenol; Influence factors; Adsorption mechanism
目录
1.引言 . 1
1.1 研究现状 . 1
1.2 研究目的 . 2
2.实验材料与方法 .. 2
2.1 主要原料与仪器 . 2
2.1.1实验材料 2
2.1.2主要实验仪器 . 2
2.1.3主要实验试剂 . 3
2.2 实验内容 . 3
2.2.1芦苇活性炭的制备工艺 3
2.2.2活性炭得率计算 4
2.3 芦苇活性炭的表征测定 . 4
2.4 活性炭吸附模拟废水中的壬基酚试验研究 .. 5
2.4.1壬基酚贮备液的制备 . 5
2.4.2壬基酚标准曲线的绘制 5
2.4.3壬基酚污水的制备 .. 5
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