Due to the current dependence on biocidal antifouling coatings for biofouling control, there is a continuing international challenge to develop more environmentally acceptable antifouling systems. Fluctuating the pH values on paint surfaces is one of these approaches. We developed an antifouling test device to investigate algal biofilms on conductive paints by using a flume with electrochemically working test panels and subsequent confocal laser scanning microscopy (CLSM) of biofilms. By employing a pole reversal of direct current, fluctuating pH values on the paint surface were generated. As a consequence of the resulting pH stress, colonization of the paint surface by diatoms decreased substantially. The density of biofilm algae decreased with increasing pH fluctuations. However, breaks between electrochemical treatments should not exceed one hour. Overall, we established an experimental setup for testing the antifouling capabilities of electrodes based on conductive paints, which could be used for further development of these varnishes.

中文翻译：

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一种使用波动 pH 值对导电涂料进行微藻防污的测试装置

由于目前对用于生物污垢控制的杀生物防污涂料的依赖，开发更环保的防污系统是一项持续的国际挑战。使油漆表面的 pH 值波动是这些方法之一。我们开发了一种防污测试装置，通过使用带有电化学工作测试板的水槽和随后的生物膜共聚焦激光扫描显微镜 (CLSM) 来研究导电涂料上的藻类生物膜。通过采用直流电的极性反转，涂料表面产生波动的 pH 值。由于由此产生的 pH 值压力，硅藻对油漆表面的定殖显着减少。生物膜藻类的密度随着pH波动的增加而降低。然而，电化学处理之间的间隔不应超过一小时。总的来说，我们建立了一个实验装置，用于测试基于导电涂料的电极的防污能力，可用于这些清漆的进一步开发。