Particulate matter (PM) generated from bursting bubbles during electrolysis are hazardous and undesirable. Cleaner production technologies to reduce these PM by controlling bubble characteristics need to be explored. This study applied an ultrasonication method to reduce PM generated from zinc electrolysis. The results showed that the reduction efficiencies for total suspended particulates increased with the increase in ultrasonic power. The reduction mechanism was also investigated from the perspective of behavior of the bubble. The results showed that the number and size of microbubbles were both inversely related to the ultrasonic power, while positively related to the total mass of PM. Ultrasonication reduced PM by decreasing the number and size of microbubbles in two steps: i) during gas generation, ultrasonication inhibited anodic oxygen evolution and cathodic hydrogen evolution to reduce the gas amount; ii) after the formation of microbubbles, the mechanical effects of ultrasonication probably prematurely detach the microbubbles on electrode and directly burst microbubbles in electrolyte. Moreover, ultrasonication was also beneficial for increasing the current efficiency of zinc deposition and for lowering the energy consumption. The findings provided indications for ultrasonication technology to reduce PM from electrolysis and paved the road for exploring other clean PM reduction methods.

电解过程中由于气泡破裂而产生的颗粒物（PM）是危险的，也是不希望的。需要探索通过控制气泡特性来减少这些PM的清洁生产技术。这项研究应用超声方法来减少锌电解过程中产生的PM。结果表明，总悬浮颗粒物的还原效率随超声功率的增加而增加。还从气泡的行为角度研究了还原机理。结果表明，微泡的数量和大小均与超声功率成反比，而与PM的总质量成正比。超声分两个步骤减少了微气泡的数量和大小，从而降低了PM：i）在产生气体的过程中，超声处理可抑制阳极氧气的释放和阴极氢气的释放，从而减少气体量。ii）在形成微泡之后，超声作用的机械作用可能会过早地将微泡分离到电极上，并直接使微泡在电解液中破裂。此外，超声处理还有利于提高锌沉积的电流效率并降低能耗。这些发现为超声技术减少电解过程中的PM提供了指示，并为探索其他清洁的PM还原方法铺平了道路。此外，超声处理还有利于提高锌沉积的电流效率并降低能耗。这些发现为超声技术减少电解过程中的PM提供了指示，并为探索其他清洁的PM还原方法铺平了道路。此外，超声处理还有利于提高锌沉积的电流效率并降低能耗。这些发现为超声技术减少电解过程中的PM提供了指示，并为探索其他清洁的PM还原方法铺平了道路。