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相关概念视频

Plasticizers01:31

Plasticizers

238
Water-reducers, or plasticizers, are chemical admixtures used in concrete to improve strength and workability. These additives reduce the water-cement ratio without compromising workability, lower the cement content while maintaining the same workability, or increase workability to assist concrete placement in inaccessible areas.
Plasticizers function by using surface-active agents to create repulsive electrostatic forces between cement particles. This dispersion enhances the concrete's...
238
Design Example: Sustainability in Concrete Building01:26

Design Example: Sustainability in Concrete Building

321
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...
321
Plastic Behavior01:21

Plastic Behavior

430
A material's elastic behavior is characterized by the disappearance of stress once the load is removed, allowing the material to return to its original state. However, when stress surpasses the yield point, yielding commences, marking the onset of plastic deformation or permanent set. This change from elastic to plastic behavior is influenced by the peak stress value and the duration before the load is removed. An intriguing observation occurs when a specimen is loaded, unloaded, and...
430
Bioremediation00:46

Bioremediation

21.9K
Bioremediation is the use of prokaryotes, fungi, or plants to remove pollutants from the environment. This process has been used to remove harmful toxins in groundwater as a byproduct of agricultural run-off and also to clean up oil spills.
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相关实验视频

Updated: Dec 14, 2025

Scalable Step-by-Step Approach of Sustainable Bioplastic Production from Food Waste
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Scalable Step-by-Step Approach of Sustainable Bioplastic Production from Food Waste

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评估实现零塑料污染的情况

Winnie W Y Lau1, Yonathan Shiran2, Richard M Bailey3

  • 1The Pew Charitable Trusts, 901 E Street NW, Washington, DC 20004, USA. wlau@pewtrusts.org yonathan.shiran@systemiq.earth richard.bailey@ouce.ox.ac.uk c.velis@leeds.ac.uk jpalardy@pewtrusts.org.

Science (New York, N.Y.)
|July 25, 2020
PubMed
概括
此摘要是机器生成的。

全球塑料污染可以通过可行的干预措施减少40%. 然而,即使立即采取行动,大量塑料垃圾仍将进入生态系统,迫切需要全球努力制消费和改善废物管理.

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科学领域:

  • 环境科学
  • 废物管理
  • 污染控制

背景情况:

  • 塑料污染是一个严重且不断升级的全球环境挑战.
  • 了解塑料废物和微塑料来源的动态对于制定有效的减排策略至关重要.

研究的目的:

  • 模拟全球塑料系统并估计各种干预措施减少塑料污染的有效性.
  • 根据2016年至2040年的不同情景,预测塑料污染水平.

主要方法:

  • 一个模拟城市固体废物和四个微塑料来源的全球模型的开发.
  • 分析五个不同的情景,包括在2016年至2040年期间实施所有可行的干预措施.

主要成果:

  • 预计实施所有可行的干预措施将使塑料污染比2016年的水平减少40%.
  • 这与2040年"正常运作"的情况相比减少了78%.
  • 尽管减少了塑料垃圾,但估计到2040年仍有7亿塑料垃圾可能进入生态系统.

结论:

  • 全球协调行动对于显著减少塑料污染至关重要.
  • 关键战略包括减少塑料消费,提高再利用,收集和回收率,改善废物处理,促进塑料价值链中的创新.