Ali Sameh S, Elsamahy Tamer, Abdelkarim Esraa A, Al-Tohamy Rania, Kornaros Michael, Ruiz Héctor A, Zhao Tong, Li Fanghua, Sun Jianzhong
Biofuels Institute, School of the Environment and Safety Engineering, Jiangsu University, Zhenjiang 212013, China; Botany Department, Faculty of Science, Tanta University, Tanta 31527, Egypt.
Biofuels Institute, School of the Environment and Safety Engineering, Jiangsu University, Zhenjiang 212013, China.
Bioresour Technol. 2022 Nov;363:127869. doi: 10.1016/j.biortech.2022.127869. Epub 2022 Sep 5.
Due to global urbanization, industrialization, and economic development, biowastes generation represents negative consequences on the environment and human health. The use of generated biowastes as a feedstock for biodegradable bioplastic production has opened a new avenue for environmental sustainability from the circular (bio)economy standpoint. Biodegradable bioplastic production can contribute to the sustainability pillars (environmental, economic, and social). Furthermore, bioenergy, biomass, and biopolymers production after recycling of biodegradable bioplastic can help to maintain the energy-environment balance. Several types of biodegradable bioplastic, such as starch-based, polyhydroxyalkanoates, polylactic acid, and polybutylene adipate terephthalate, can achieve this aim. In this review, an overview of the main biowastes valorization routes and the main biodegradable bioplastic types of production, application, and biodegradability are discussed to achieve the transition to the circular economy. Additionally, end-of-life scenarios (up-cycle and down-cycle) are reviewed to attain the maximum environmental, social, and economic benefit from biodegradable bioplastic products under biorefinery concept.
由于全球城市化、工业化和经济发展，生物废弃物的产生对环境和人类健康造成了负面影响。将产生的生物废弃物用作可生物降解生物塑料生产的原料，从循环（生物）经济的角度为环境可持续性开辟了一条新途径。可生物降解生物塑料的生产有助于实现可持续发展的三大支柱（环境、经济和社会）。此外，可生物降解生物塑料回收后用于生物能源、生物质和生物聚合物的生产，有助于维持能源与环境的平衡。几种类型的可生物降解生物塑料，如淀粉基塑料、聚羟基脂肪酸酯、聚乳酸和聚对苯二甲酸丁二醇酯，都能实现这一目标。在本综述中，将讨论主要生物废弃物的增值途径以及主要可生物降解生物塑料的生产、应用和生物降解性类型，以实现向循环经济的转型。此外，还将对生命周期结束时的情景（升级循环和降级循环）进行综述，以便在生物炼制概念下从可生物降解生物塑料产品中获得最大的环境、社会和经济效益。
