Fractured porous media receive less attention than classic porous media in terms of remediation processes and sui` techniques that can be applied efficiently. An etched glass micromodel was built in order to simulate a fractured bedrock. The purpose of this paper was to evaluate the feasibility of surfactant-alcohol injection to recover NAPL with this fractured glass micromodel. The influence of several parameters influencing NAPL recovery via surfactant injection were tested in the micromodel: the ratio of alcohol to surfactant, the total concentration of active matter (alcohol + surfactant), the number of pore volume injected, the direction of the injection, and the continuous or pulsed injection mode. These tests made it possible to identify the key parameters for a better recovery of NAPL in a fractured environment, which are: continuous upward injection, six pore volume of surfactant solution and a n-AmOH/n-BuOH ratio of 2.5. Micromodel experiments were compared to previous reported experiments using the same surfactant solutions injected in classical porous media. The lower capillary number being required for NAPL recovery in porous media is probably related to the better sweep and the increase in surface area available for NAPL dissolution. NAPL recovery may be improved by increasing the capillary number by increasing the injected surfactant solution viscosity with polymer or by injecting foam.

在可有效应用的修复过程和特殊技术方面，破裂的多孔介质比传统的多孔介质受到的关注较少。为了模拟断裂的基岩，建立了蚀刻玻璃微模型。本文的目的是评估用这种破裂的玻璃微模型注射表面活性剂-醇来回收NAPL的可行性。在微模型中测试了影响通过表面活性剂注入的NAPL回收率的几个参数的影响：酒精与表面活性剂的比例，活性物质的总浓度（酒精+表面活性剂），注入的孔体积数，注入的方向以及连续或脉冲注射模式。通过这些测试，可以确定在破裂环境中更好地恢复NAPL的关键参数，这些关键参数是：连续向上注入，六孔体积的表面活性剂溶液，n-AmOH / n-BuOH之比为2.5。使用相同的表面活性剂溶液注入经典多孔介质中，将微模型实验与先前报道的实验进行了比较。多孔介质中NAPL回收所需的较低毛细管数可能与更好的吹扫性以及可用于NAPL溶解的表面积增加有关。通过增加与聚合物一起注入的表面活性剂溶液的粘度或通过注入泡沫来增加毛细管数，可以改善NAPL的回收率。多孔介质中NAPL回收所需的较低毛细管数可能与更好的吹扫性以及可用于NAPL溶解的表面积增加有关。通过增加与聚合物一起注入的表面活性剂溶液的粘度或通过注入泡沫来增加毛细管数，可以改善NAPL的回收率。多孔介质中NAPL回收所需的较低毛细管数可能与更好的吹扫性以及可用于NAPL溶解的表面积增加有关。通过增加与聚合物一起注入的表面活性剂溶液的粘度或通过注入泡沫来增加毛细管数，可以改善NAPL的回收率。