Surfactant adsorption to soil components and soils
Surfactant adsorption to soil components and soils
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DOI：
10.1016/j.cis.2016.01.006
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发表时间：
2016-05-01
影响因子：
15.6
通讯作者：
Koopal, Luuk K.
中科院分区：
文献类型：
--
作者：
Ishiguro, Munehide;Koopal, Luuk K.
土壤是有机物质和无机物质的复杂和广泛变化的混合物;因此，表面活性剂对土壤的吸附与土壤成分有关。我们首先讨论了表面活性剂的性质，包括临界胶束浓度（CMC）和表面活性剂在水/空气界面上的吸附，后者给出了表面活性剂吸附到疏水表面的印象，并说明了CMC对吸附过程的重要性。然后注意最重要的土壤颗粒类型：腐殖酸和富里酸，二氧化硅，金属氧化物和层状铝硅酸盐。信息提供其结构，表面性质和主要（质子）电荷特性，这都是重要的表面活性剂结合。随后，详细讨论了不同类型的表面活性剂对这些单独的土壤组分的吸附，主要是实验结果的基础上，并考虑特定的（化学）和静电相互作用，疏水吸引力作为特定的相互作用的重要组成部分。吸附模型，可以半定量地描述的功能进行了简要讨论。本文最后简要讨论了表面活性剂在土壤上吸附的一些趋势以及可能出现的一些复杂情况，最后讨论了表面活性剂吸附顺序对土壤胶体稳定性和渗透性的影响。当我们试图了解表面活性剂在土壤和水环境中的命运时，土壤或土壤颗粒的疏水性和电荷密度必须与表面活性剂的结构，疏水性和电荷一起考虑，因为这些因素影响吸附。pH和离子强度是关于颗粒的电荷密度的重要参数。由于表面活性剂吸附影响土壤结构和渗透性，深入了解表面活性剂吸附到土壤中，颗粒是有益的良好的土壤管理。(C)2016爱思唯尔B. V.保留所有权利。
Soils are complex and widely varying mixtures of organic matter and inorganic materials; adsorption of surfactants to soils is therefore related to the soil composition. We first discuss the properties of surfactants, including the critical micelle concentration (CMC) and surfactant adsorption on water/air interfaces, the latter gives an impression of surfactant adsorption to a hydrophobic surface and illustrates the importance of the CMC for the adsorption process. Then attention is paid to the most important types of soil particles: humic and fulvic acids, silica, metal oxides and layered aluminosilicates. Information is provided on their structure, surface properties and primary (proton) charge characteristics, which are all important for surfactant binding. Subsequently, the adsorption of different types of surfactants on these individual soil components is discussed in detail, based on mainly experimental results and considering the specific (chemical) and electrostatic interactions, with hydrophobic attraction as an important component of the specific interactions. Adsorption models that can describe the features semi-quantitatively are briefly discussed. In the last part of the paper some trends of surfactant adsorption on soils are briefly discussed together with some complications that may occur and finally the conse, quences of surfactant adsorption for soil colloidal stability and permeability are considered. When we seek to understand the fate of surfactants in soil and aqueous environments, the hydrophobicity and charge density of the soil or soil particles, must be considered together with the structure, hydrophobicity and charge of the surfactants, because these factors affect the adsorption. The pH and ionic strength are important parameters with respect to the charge density of the particles. As surfactant adsorption influences soil structure and permeability, insight in surfactant adsorption to soil, particles is useful for good soil management. (C) 2016 Elsevier B.V. All rights reserved.