The effect of a surface modification process known as "mussel-inspired modification" on the adsorption dynamics of hydrophobic adsorbent, namely XAD1180, was studied based on equilibrium adsorption data. In the study, three anionic colorants (i.e., Sunset yellow, SY; Allura red, AR; and Tartrazine, TZ) were used as the model compounds. The role of some experimental parameters, such as pH (4–7), ionic strength (0.01–0.50 mM) and colorant concentration (25–125 mg/L), were investigated to determine optimal conditions leading to the highest adsorption. Equilibrium adsorption data were obtained under optimal conditions by stepwise frontal analysis method (SFA) and modeled on the basis of some common adsorption isotherm models (i.e., Langmuir and Freundlich). The adsorption dynamics of the XAD1180 resin have been found to vary significantly after PD coating. After the PD coating process, it was found that the highly hydrophobic background material, XAD1180, gained a pH-sensitive character, thereby replacing a sharp decrease in the adsorption capacity at pH = 5.0–7.0 with an increase in pH = 4.0. Another dramatic effect of the PD coating was observed with Langmuir monolayer adsorption capacities, so that the PD layer was found to increase the monolayer saturation capacity of the XAD1180 (from 8.0 to 17 µmol/g for SY, from 7.7 to 9.9 µmol/g for AR, and from 5.3 to 9.1 µmol/g for TZ). It was also deduced from the Freundlich isotherm parameter, K_F, that there was, in general, a clear increment in the overall effect of adsorption capacity and the average affinity after mussel-inspired surface modification process.

基于平衡吸附数据，研究了被称为“贻贝启发改性”的表面改性过程对疏水吸附剂XAD1180的吸附动力学的影响。在这项研究中，使用了三种阴离子型着色剂（即，日落黄，SY；阿鲁拉红，AR；和Tartrazine，TZ）作为模型化合物。研究了一些实验参数（例如pH（4–7），离子强度（0.01–0.50 mM）和着色剂浓度（25–125 mg / L））的作用，以确定导致最高吸附的最佳条件。平衡吸附数据是在最佳条件下通过逐步前沿分析方法（SFA）获得的，并基于一些常见的吸附等温线模型（即Langmuir和Freundlich）进行建模。已经发现，PD涂布后，XAD1180树脂的吸附动力学会发生显着变化。在PD涂覆过程之后，发现高度疏水的背景材料XAD1180获得了pH敏感特性，从而用pH = 4.0的增加代替了pH = 5.0-7.0时吸附能力的急剧下降。用Langmuir单层吸附容量观察到PD涂层的另一个显着效果，因此发现PD层增加了XAD1180的单层饱和容量（SY从8.0降至17 µmol / g，对于SY从7.7降至9.9 µmol / g。 AR，TZ为5.3至9.1 µmol / g。它也是从Freundlich等温线参数推导出来的，因此，用pH = 4.0的增加代替了pH = 5.0-7.0时吸附能力的急剧下降。用Langmuir单层吸附容量观察到PD涂层的另一个显着效果，因此发现PD层增加了XAD1180的单层饱和容量（SY从8.0降至17 µmol / g，对于SY从7.7降至9.9 µmol / g。 AR，TZ为5.3至9.1 µmol / g。它也是从Freundlich等温线参数推导出来的，因此，用pH = 4.0的增加代替了pH = 5.0-7.0时吸附能力的急剧下降。用Langmuir单层吸附容量观察到PD涂层的另一个显着效果，因此发现PD层增加了XAD1180的单层饱和容量（SY从8.0降至17 µmol / g，对于SY从7.7降至9.9 µmol / g。 AR，TZ为5.3至9.1 µmol / g。它也是从Freundlich等温线参数推导出来的，K _F，通常，在贻贝启发的表面改性过程之后，吸附能力的总体效果和平均亲和力都有明显的增加。