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生物塑料对环境影响的调查:环保生物塑料解决方案开发的最新进展。

An investigation of the environmental implications of bioplastics: Recent advancements on the development of environmentally friendly bioplastics solutions.

作者信息

Kumar Ravinder, Lalnundiki V, Shelare Sagar D, Abhishek Galla John, Sharma Shubham, Sharma Deepti, Kumar Abhinav, Abbas Mohamed

机构信息

School of Mechanical Engineering, Lovely Professional University, Phagwara, Punjab, 144411, India.

School of Agriculture, Lovely Professional University, Phagwara, Punjab, 144411, India.

出版信息

Environ Res. 2024 Mar 1;244:117707. doi: 10.1016/j.envres.2023.117707. Epub 2023 Nov 24.

Abstract

The production and utilization of plastics may prove beneficial, but the environmental impact suggests the opposite. The single-use plastics (SUP) and conventional plastics are harmful to the environment and need prompt disposal. Bioplastics are increasingly being considered as a viable alternative to conventional plastics due to their potential to alleviate environmental concerns such as greenhouse gas emissions and pollution. However, the previous reviews revealed a lack of consistency in the methodologies used in the Life Cycle Assessments (LCAs), making it difficult to compare the results across studies. The current study provides a systematic review of LCAs that assess the environmental impact of bioplastics. The different mechanical characteristics of bio plastics, like tensile strength, Young's modulus, flexural modulus, and elongation at break are reviewed which suggest that bio plastics are comparatively much better than synthetic plastics. Bioplastics have more efficient mechanical properties compared to synthetic plastics which signifies that bioplastics are more sustainable and reliable than synthetic plastics. The key challenges in bioplastic adoption and production include competition with food production for feedstock, high production costs, uncertainty in end-of-life management, limited biodegradability, lack of standardization, and technical performance limitations. Addressing these challenges requires collaboration among stakeholders to drive innovation, reduce costs, improve end-of-life management, and promote awareness and education. Overall, the study suggests that while bioplastics have the potential to reduce environmental impact, further research is needed to better understand their life cycle and optimize their end-of-life (EoL) management and production to maximize their environmental benefits.

摘要

塑料的生产和使用可能被证明是有益的,但对环境的影响却恰恰相反。一次性塑料(SUP)和传统塑料对环境有害,需要及时处理。生物塑料因其在缓解温室气体排放和污染等环境问题方面的潜力,正越来越多地被视为传统塑料的可行替代品。然而,以往的综述显示,生命周期评估(LCA)中使用的方法缺乏一致性,使得各项研究结果难以比较。本研究对评估生物塑料环境影响的LCA进行了系统综述。对生物塑料的不同机械特性,如拉伸强度、杨氏模量、弯曲模量和断裂伸长率进行了综述,结果表明生物塑料比合成塑料要好得多。与合成塑料相比,生物塑料具有更高效的机械性能,这意味着生物塑料比合成塑料更具可持续性和可靠性。生物塑料采用和生产中的关键挑战包括与粮食生产争夺原料、生产成本高、报废管理的不确定性、生物降解性有限、缺乏标准化以及技术性能限制。应对这些挑战需要利益相关者之间的合作,以推动创新、降低成本、改善报废管理,并提高认识和开展教育。总体而言,该研究表明,虽然生物塑料有潜力减少环境影响,但仍需要进一步研究,以更好地了解其生命周期,并优化其报废(EoL)管理和生产,以最大限度地提高其环境效益。

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