Institute of Environmental Processes and Pollution Control, School of Environmental and Civil Engineering, Jiangsu Engineering Laboratory for Biomass Energy and Carbon Reduction Technology, Jiangsu Key Laboratory of Anaerobic Biotechnology, Jiangnan University, Wuxi 214122, China.
Shanghai Key Laboratory of Atmospheric Particle Pollution and Prevention (LAP3), Department of Environmental Science and Engineering, Fudan University, Shanghai 200438, China.
Sci Total Environ. 2023 Apr 15;869:161833. doi: 10.1016/j.scitotenv.2023.161833. Epub 2023 Jan 28.
COVID-19 pandemic caused a significant increase in medical and infected domestic waste, greatly increasing risk of human infected with SARS-CoV-2. Therefore, it is critical to prevent the spread of SARS-CoV-2 from solid waste to humans. Current commercial disinfectants present a high carbon footprint issue. Hence, we prepared a renewable wheat straw-based bio-liquid that can damage SARS-CoV-2 RNA and protein. The wet thermochemical extraction (WTE) bio-liquid, with total organic carbon concentration exceeding 1892 mg/L, could effectively damage the virus. However, dry thermochemical extraction (DTE) samples were not efficient due to their low content of effective compounds. The life cycle assessment showed that WTE bio-liquid production implies lower energy and environmental negative impacts than DTE. Moreover, the process by-product, char, can simultaneously reduce 3.1 million tonnes of global CO emissions while used as coal substitute. Yield of bio-liquid extremely exceed commercial disinfectant with just 1 % wheat straw utilisation, which meet the demand of processing solid waste. Further, their costs are significantly lower than commercial disinfectants, which are suitable for developing countries. Therefore, the antiviral bio-liquid produced from agricultural straw can be a new way to meet the needs of preventing the spread of SARS-CoV-2 and resume the sustainable development of society.
新冠疫情大流行导致医疗和感染性生活垃圾显著增加，大大增加了人类感染 SARS-CoV-2 的风险。因此，防止 SARS-CoV-2 从固体废物传播到人类至关重要。目前的商业消毒剂存在高碳足迹问题。因此，我们制备了一种可再生的基于小麦秸秆的生物液体，它可以破坏 SARS-CoV-2 的 RNA 和蛋白质。总有机碳浓度超过 1892mg/L 的湿热化学提取（WTE）生物液体可以有效地破坏病毒。然而，由于有效化合物含量低，干热化学提取（DTE）样品效率不高。生命周期评估表明，与 DTE 相比，WTE 生物液体的生产意味着能源和环境负面影响更小。此外，过程副产物炭可以同时减少 310 万吨全球 CO 排放，而用作煤炭替代品。生物液体的产量远远超过了仅使用 1%小麦秸秆的商业消毒剂，满足了处理固体废物的需求。此外，它们的成本明显低于商业消毒剂，适合发展中国家。因此，从农业秸秆中生产的抗病毒生物液体可以成为满足预防 SARS-CoV-2 传播和恢复社会可持续发展需求的新途径。
