School of Material Science and Engineering, University of Jinan, Jinan 250022, PR China.
Korea Biochar Research Center, APRU Sustainable Waste Management Program & Division of Environmental Science and Ecological Engineering, Korea University, Seoul 02841, Republic of Korea; R&D Centre, Sun Brand Industrial Inc., Jeollanam-do 57248, Republic of Korea.
Bioresour Technol. 2022 Feb;346:126582. doi: 10.1016/j.biortech.2021.126582. Epub 2021 Dec 22.
Pyrolysis of the middle layer of a surgical mask (MLM) and inner and outer layers of a surgical mask (IOM) was performed to assess their potential valorization as waste-to-energy feedstocks, and the characteristics of the resulting products were investigated. Pyrolysis of the main organics in waste surgical masks occurred at a very narrow temperature range of 456-466 °C. The main product was carbon-rich and oxygen-deficient liquid oil with a high heating value (HHV) of 43.5 MJ/kg. From the life-cycle perspective, environmental benefits and advantages of this upcycling approach were verified compared with conventional waste management approaches. This study advocated the potential application of waste surgical masks as feedstocks for fuels and energy, which is beneficial to mitigate plastic pollution and achieve sustainable plastic waste-to-energy upcycling, simultaneously.
对医用口罩的中层 (MLM) 以及内外层 (IOM) 进行热解，以评估它们作为废物能源原料的潜在价值，并研究了所得产物的特性。医用口罩中主要有机物的热解发生在非常狭窄的温度范围内，为 456-466°C。主要产物是富含碳、贫氧的液体油，具有高热值 (HHV) 43.5 MJ/kg。从生命周期的角度来看，与传统的废物管理方法相比，这种升级利用方法具有环境效益和优势。本研究提倡将废弃医用口罩用作燃料和能源的原料，这有利于减轻塑料污染，同时实现可持续的塑料废物能源升级利用。
