Ramalingam Senthil, Thamizhvel R, Sudagar S, Silambarasan R
University College of Engineering, Villupuram, India.
IFET College of Engineering, Villupuram, India.
Mater Today Proc. 2023;72:1618-1623. doi: 10.1016/j.matpr.2022.09.430. Epub 2022 Oct 4.
During this pandemic, it has become customary to wear a face waste mask to guard against coronavirus illness (COVID-19). However, huge production of face waste masks, PPE kit and gloves pose environmental risks, since existing disposal methods such as incineration and reclamation which are emitting hazardous substances. In the present study covid-19 medical waste material like waste face waste masks; gloves and PPE kit (personal protective equipment) are considered as the feedstock for the thermal degradation process. Mainly nylon, polyethylene and polypropylene compounds are present in the Covid-19 medical waste compounds, further feedstock material is subjected to physical characterization process like proximate, ultimate and thermo gravimetric analysis (TGA), to determine the moisture, ash, volatile matter and decomposition temperature respectively. The waste waste mask has lower ash content of 9.7 %, whereas gloves and other PPEs has 11.8 and 11.2 % of ash respectively. Similarly volatile matter is also higher for waste waste mask than other feed stocks. Pyrolysis process is carried out between a temperature range of 100 °C to 700 °C and the products of the pyrolysis process are pyrolytic liquid, gas and residue. The maximum pyrolytic oil is produced from waste masks, gloves and other PPE kit at 300, 350 and 320 °C respectively. The calorific value of the pyrolytic oil from waste mask, gloves and other PPE kit possess 40.85,40.11,40.31 MJ/kg respectively, which indicates that all the pyrolytic oil has closer to the diesel fuel. Therefore pyroltic oil obtained from the Covid-19 medical waste can be used as an alternative fuel for CI engine.
在这次疫情期间,佩戴一次性口罩以预防冠状病毒病(COVID-19)已成为一种习惯。然而,大量生产一次性口罩、个人防护装备套件和手套带来了环境风险,因为现有的处置方法如焚烧和回收会排放有害物质。在本研究中,COVID-19医疗废料,如一次性口罩、手套和个人防护装备套件(个人防护设备)被视为热降解过程的原料。COVID-19医疗废料化合物中主要存在尼龙、聚乙烯和聚丙烯化合物,进一步对原料进行物理表征过程,如近似分析、元素分析和热重分析(TGA),分别测定水分、灰分、挥发物和分解温度。一次性口罩的灰分含量较低,为9.7%,而手套和其他个人防护装备的灰分含量分别为11.8%和11.2%。同样,一次性口罩的挥发物含量也高于其他原料。热解过程在100℃至700℃的温度范围内进行,热解过程的产物是热解液、气体和残渣。一次性口罩、手套和其他个人防护装备套件分别在300℃、350℃和320℃时产生的热解油最多。一次性口罩、手套和其他个人防护装备套件的热解油热值分别为40.85、40.11、40.31兆焦/千克,这表明所有热解油都与柴油燃料相近。因此,从COVID-19医疗废料中获得的热解油可作为CI发动机的替代燃料。