Portable Gas Phase Advanced Oxidation Unit based on novel LED's and Hydrogen Peroxide Delivery System for Decontaminating Food and Non-Food Surfaces

表面可携带和传播致命病原体，导致在地方、国家或全球范围内爆发疾病。例如，新鲜农产品与备受瞩目的食源性疾病暴发有关。感染性病原体也可以通过个人防护装备传播，特别是在长期使用的情况下。在易受自然灾害影响的地区，在没有传统灭菌技术的情况下，需要对各种物品进行净化。有各种各样的化学消毒剂可以净化表面，尽管存在有毒残留物的风险，此外许多遇到的表面都是潮湿敏感的。在下文中，一种成功的基于气相高级氧化工艺(GAOP)的去污方法将被改造成便携式设备，用于家庭、公共或灾害/紧急区域。这一过程是基于使用杀菌紫外线(254 Nm)和过氧化氢和/或臭氧的组合来产生羟基自由基，这些自由基可以迅速(&lt；30s)灭活各种表面(新鲜农产品、面具、电子产品)上的微生物(包括内孢子)。该工艺已成功应用于工业食品加工和保健设施。拟议的项目将采用相同的gAOP原则，开发一种紧凑、自给式、便携式的食品和非食品表面灭菌系统。LED技术的最新进展提供了可靠的紫外光光源，具有低能量需求，并能够利用能够增强过氧化氢生成羟基自由基的波长。LED的另一个优势是能够给灯通电，而不需要传统的基于灯的单元所要求的预热期。双氧水雾将通过电喷雾的方法传递，然后将确保被净化对象周围的氧化剂均匀覆盖，从而能够在现场产生羟基自由基。将开发便携式gAOP，并优化操作参数，以去除模型食品和非食品表面的污染。

Surfaces can carry and spread virulent pathogens leading to outbreaks of illness in local, national or global scales. For example, fresh produce has been associated with high profile foodborne illness outbreaks. Infectious agents can also be transferred via Personal protective equipment especially under extended usage. In areas subject to natural disasters there is a need to decontaminate a broad range of items when traditional sterilization technologies are not available. There are a diverse range of chemical sanitizers to decontaminate surfaces although there is a risk of toxic residues, in addition to many surfaces encountered are moisture sensitive. In the following a successful decontamination method based on gas-phase Advanced Oxidation Process (gAOP) will be adapted into a portable device for use in domestic, public or in disaster/emergency zones. The process is based on using a combination of germicidal UV light (254 nm) and hydrogen peroxide and/or ozone to generate hydroxyl-radicals that can rapidly (<30s) inactivate microbes (including endospores) on a wide range of surfaces (fresh produce, masks, electronics). The process has been successfully applied within industrial food processing and health care facilities. The proposed project will take the same gAOP principle to develop a compact, self-contained, portable surface sterilization system for food and non-food surfaces. Recent advances in LED technology have made available UV sources that are reliable, have a low energy requirement coupled with being able to utilize wavelengths that can enhance the hydroxyl-radical formation from hydrogen peroxide. Additional advantage of LEDs is the ability to power-up lights without the need for a warming-up period as required by traditional lamp based units. The hydrogen peroxide mist will be delivered via a electrospraying approach then will ensure even coverage of the oxidant around the object being decontaminated enabling on-site generation of hydroxyl-radicals. The portable gAOP will be developed and operating parameters optimized for decontaminating model food and non-food surfaces.