阴离子表面活性剂利用零长度栏的方法从水溶液在活性炭和层状双氢

1、阴离子表面活性剂利用零长度栏的方法从水溶液在活性炭和层状双氢氧化物的吸附动力学分析（有英语版）阴离子表面活性剂利用零长度栏的方法从水溶液在活性炭和层状双氢氧化物的吸附动力学分析摘 要 低成本高潜力的吸附工艺来提高洗衣房洗涤水。从早期吸附剂的选择来看,层状双氢氧化物(LDH)和颗粒状活性炭(GAC)证明是有趣的材料,以除去阴离子表面活性剂,烷基苯磺酸盐(LAS)是冲洗水的主要污染物。主要的研究问题是为了确定吸附动力学的线性烷基苯磺酸盐及颗粒状活性炭和LDH的活性。吸附剂预处理的影响，在零长度栏方法中设置了研究流速，颗粒大小和初始线性烷基苯磺酸盐浓度。速度确定步骤是通过拟合的吸附模型和离子交换模型

2、描述intraparticle扩散实验数据。颗粒状活性炭是一种很好描述吸附模型符合菲克第二定律。颗粒状活性炭-1240的有效扩散系数是1.310-100.210-10m2/s,而不受颗粒大小和初始线性烷基苯磺酸盐浓度的影响。线性烷基苯磺酸盐离子交换在LDH不是很好描述的离子交换模型。确定一步率通过比较几种不同的实验模型和数据获得的。一个双层模型很好地描述的实验数据进行了分析。在LDH停滞的外表面膜阻力源自一个假定双电层。双层传质系数710-5210-5m/s。关键字：吸附动力学；活性炭；阴离子表面活性剂；层状双氢氧化物；动力学模型； 1.引言 2.原理2.1 吸附模型（活性炭）2.2 离子交换

3、模型（LDH）2.3 参数估计3 材料和方法3.1 材料3.2 特性描述3.3 吸附平衡试验3.4 零长度栏的设置3.5 零长度栏装置的校准4.结果与讨论4.1 特性描述4.2 吸附平衡实验4.4 流速的影响4.5 粒度的影响4.6 双层模型4.7 烷基苯磺酸的初始浓度的影响5.结论谢辞本研究的资助城市-吕伐登,欧盟欧洲区域发展基金。作者们希望感谢Paul Birker和Philip van der Hoeven为卓有成效的讨论。此外,我们要感谢Tanja Djekic Zivkovic,Paul Willems 和 Katarina Babic帮助设置和建模。我们感谢Norit,联合利华和阿

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