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相关概念视频

Sustainable Development01:43

Sustainable Development

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As the human population continues to grow and use resources, we must be mindful of our planet’s natural limits. Sustainable development provides a pathway to maintain and improve human life now while also ensuring that future generations will have the resources that they need. The long-term success of sustainability efforts rests on understanding the interplay between human actions and ecological systems.
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Steel Manufacturing01:26

Steel Manufacturing

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Steel manufacturing is a multi-stage process that begins by smelting iron ore into cast iron in a blast furnace. This initial stage involves layering iron ore with coke, a type of fuel, and crushed limestone within the furnace. The coke is ignited with a high volume of air, leading to the creation of carbon monoxide, which acts to reduce the iron ore to pure iron.
During this smelting process, limestone plays a crucial role by forming slag. Slag captures impurities within the molten iron, such...
377
Design Example: Sustainability in Concrete Building01:26

Design Example: Sustainability in Concrete Building

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As the construction industry moves towards more eco-friendly practices, concrete's adaptability and its ability to incorporate sustainable features make it a key material in the drive towards greener building solutions.
There are multiple approaches to achieve sustainability in a commercial concrete building. For instance, construct a concrete parking area under the building, utilizing pervious concrete paver blocks in open areas to facilitate rainwater collection through an underground...
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What are Biogeochemical Cycles?00:54

What are Biogeochemical Cycles?

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The most common elements in organic molecules, carbon, hydrogen, oxygen, nitrogen, sulfur, and phosphorus, are only available in the ecosystem in limited amounts. Therefore, these nutrients must be recycled through both biotic and abiotic components of the ecosystem, in processes generally called biogeochemical cycles.
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Types of Step-Growth Polymers: Polyesters01:20

Types of Step-Growth Polymers: Polyesters

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The introduction of polyesters has brought major development to the textile industry. The wrinkle-free behavior of polyester blends has eliminated the need for starching and ironing clothes.
Polyesters are commonly prepared from terephthalic acid and ethylene glycol; the crude product is known as poly(ethylene terephthalate) or PET. However, polyesters are synthesized industrially by transesterification of dimethyl terephthalate with ethylene glycol at 150 °C. The two reactants and the...
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Wood Products01:21

Wood Products

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Wood products encompass a broad range of materials crafted from wood strands, veneers, lumber, and even waste wood-like shreds, designed for both structural and nonstructural purposes. Various specialized wood products have been developed to enhance strength, durability, and versatility in building applications.
Glue-laminated wood, often referred to as glulam, combines multiple smaller pieces of dimensional lumber using adhesives to form a single, larger piece. Cross-laminated timber consists...
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相关实验视频

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Designed for Molecular Recycling: A Lignin-Derived Semi-aromatic Biobased Polymer
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从关键原材料到循环原材料

Joost M van Gaalen1, J Chris Slootweg1

  • 1Van 't Hoff Institute for Molecular Sciences, University of Amsterdam, PO Box 94157, 1090 GD, Amsterdam, The Netherlands.

ChemSusChem
|October 22, 2024
PubMed
概括

这种观点建议向循环原材料管理过渡,以应对关键原材料 (CRM) 的挑战. 为循环设计提供了最具影响力的解决方案,用于可持续的资源使用和弹性经济.

科学领域:

  • 材料科学 材料科学 材料科学
  • 环境科学 环境科学
  • 经济学 经济学 经济学

背景情况:

  • 关键原材料 (CRM) 的不可持续消费构成环境,地缘政治和经济风险.
  • 当前的经济模式在确保长期CRM可用性和可持续性方面面临局限性.

研究的目的:

  • 为了应对推进CRM使用的挑战.
  • 建议向循环原材料管理过渡.
  • 通过技术方法减轻CRM的关键性.

主要方法:

  • 减少CRM的使用量.
  • 用不那么关键的材料取代CRM.
  • 提高回收和回收过程.
  • 实施循环原则的设计.

主要成果:

  • 为循环设计被确定为最具影响力的解决方案.
  • 多方面的技术方法可以减轻CRM的关键性.
  • 循环经济原则促进了一个有弹性,低碳的经济.

结论:

  • 产品设计和材料利用的范式转变至关重要.
关键词:
循环经济是一个循环经济.循环性是一种循环性.关键原材料 关键原材料脱碳是指脱碳的过程.设计用于回收利用.

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  • 诸如模块化设计和产品寿命延长等原则是关键.
  • 过渡到服务模式支持可持续的CRM管理.