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A novel method for textile odor removal using engineered water nanostructures

机译：利用工程水纳米结构去除纺织品异味的新方法

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The malodor attached to textiles not only causes indoor environmental pollution but also endangers people's health even at low concentrations. Existing technologies cannot effectively eliminate the odor. Herein, an effective and environmentally friendly technology was proposed to address this challenging issue. This technology utilizes electrospraying process to produce Engineered Water Nanostructures (EWNS) in a controllable manner. Upon application of a high voltage to the Taylor cone, EWNS can be generated from the condensed vapor water through a Peltier element. Smoking, cooking and perspiration, considered the typical indoor malodorous gases emitted from human activities, were studied in this paper. A headspace SPME method in conjunction with GC-MS was employed for the extraction, detection and quantification of any odor residues. Results indicated that EWNS played a significant role in the deodorization process with removal efficiencies for the three odors were 95.3 ± 0.1%, 100.0 ± 0.0% and 43.7 ± 2.3%, respectively. The Reactive Oxygen Species (ROS) contained in the EWNS, mainly hydroxyl (OH˙) and superoxide radicals are the possible mechanisms for the odor removal. These ROS are strong oxidative and highly reactive and have the ability to convert odorous compounds to non-odorous compounds through various chemical reaction mechanisms. This study showed clearly the potential of the proposed method in the field of odor removal and can be applied in the battle against indoor air pollution.
机译：附着在纺织品上的恶臭不仅会造成室内环境污染，而且即使浓度低也会危害人们的健康。现有技术不能有效消除异味。在此，提出了一种有效且环保的技术来解决这个具有挑战性的问题。这项技术利用电喷涂工艺以可控制的方式生产工程水纳米结构（EWNS）。在泰勒锥上施加高压后，可以通过珀耳帖元件从冷凝的蒸气水中产生EWNS。本文研究了吸烟，做饭和排汗，这些吸烟被认为是人类活动产生的典型室内恶臭气体。顶空SPME方法与GC-MS结合用于提取，检测和定量任何残留的气味。结果表明，EWNS在除臭过程中发挥了重要作用，三种异味的去除效率分别为95.3±0.1％，100.0±0.0％和43.7±2.3％。 EWNS中所含的活性氧（ROS）主要是羟基（OH˙）和超氧自由基是去除异味的可能机理。这些ROS具有强氧化性和高反应性，并具有通过各种化学反应机制将有味化合物转化为无味化合物的能力。这项研究清楚地表明了该方法在除味领域的潜力，可用于对抗室内空气污染。

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