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相关概念视频

Environmental Applications of Microorganisms01:30

Environmental Applications of Microorganisms

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Microorganisms play a pivotal role in maintaining ecosystem balance by recycling essential elements such as carbon, nitrogen, and phosphorus, as well as supporting processes like bioremediation, wastewater treatment, and biofuel production.Microbes in Elemental CyclesIn the carbon cycle, microorganisms decompose organic matter, releasing carbon dioxide via aerobic respiration. This carbon dioxide is subsequently used by photosynthetic organisms to synthesize organic compounds, closing the...
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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.
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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

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Isolation of Native Soil Microorganisms with Potential for Breaking Down Biodegradable Plastic Mulch Films Used in Agriculture
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可堆肥塑料包装废弃物的管理实践:影响,挑战和建议

Jorge Cristóbal1, Paola Federica Albizzati1, Michele Giavini2

  • 1Joint Research Centre of the European Commission, Directorate D - Sustainable Resources, Unit D3 - Land Resources and Supply Chain Assessment, Via E. Fermi 2749, 21027 Ispra, VA, Italy.

Waste management (New York, N.Y.)
|August 16, 2023
PubMed
概括

使用常规塑料和回收收集可堆肥塑料包装 (CPP) 提供了最佳的环境和经济效益. 然而,目前的低产量限制了整体优势,这表明需要简化管理标准.

关键词:
生物废弃物 生物废弃物收藏 收藏 收藏 收藏可复合塑料的复合塑料.在 LCA LCA LCA 中.在 LCC LCC 中.回收回收是回收的过程.治疗方法 治疗方法

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科学领域:

  • 环境科学 环境科学
  • 废物管理 废物管理
  • 循环经济是一个循环经济.

背景情况:

  • 欧盟绿色协议寻求解决塑料生产和污染挑战的解决方案.
  • 生物塑料是一种潜在的解决方案,但它们的废物管理缺乏协调.
  • 有效收集和管理可堆肥塑料包装 (CPP) 是至关重要的.

研究的目的:

  • 量化不同CPP废物管理方案对环境和经济的影响.
  • 为决策者提供有关各种CPP管理策略可行性的信息.
  • 确定CPP废物处理的最佳做法.

主要方法:

  • 生命周期评估 (LCA) 用于评估环境影响.
  • 生命周期成本 (LCC) 来评估经济影响.
  • 对不同的CPP废物管理场景进行比较分析.

主要成果:

  • 使用常规塑料收集CPP,然后进行机械分类和回收,产生最高的效益 (约. 306公斤的二氧化碳等值. t-1节省,净收入为3.7欧元 t-1).
  • 使用生物废物和生物处理收集CPP是第二个最佳选择 (约. 69公斤的二氧化碳等值. t-1节省,成本为197欧元 t-1).
  • 由于负面影响,强烈建议使用传统塑料收集CPP进行生物处理.

结论:

  • 闭环系统是理想的,但取决于CPP数量,公民参与和二次材料市场.
  • 目前CPP的低数量意味着管理选择应该优先考虑技术和经济可行性.
  • 目前,将监管和管理工作集中在具有更高影响力的废物流上可能更有效.