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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.
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Environmental Applications of Microorganisms01:30

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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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Designing a structure involves a series of considerations, primarily the material's ultimate strength, calculated through tests that measure changes under increased force until the material reaches its breaking point or limit. The ultimate load, where the material breaks, is divided by its original cross-sectional area, resulting in the ultimate normal stress or strength. The ultimate shearing stress is another significant factor taken into account.
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Air entrainment in concrete significantly enhances the material's durability, especially in environments subjected to freeze-thaw cycles. Introducing small air bubbles into the concrete mix acts as internal voids that accommodate the expansion of water when it freezes, thereby alleviating internal stress and preventing structural cracks. This function is crucial in climates with significant freezing and thawing, as it protects the concrete from repeated stresses that could lead to premature...
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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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Indoor Air Quality Improvement Using Nature-Based Solutions: Design Proposals to Greener Cities.

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Microalgae cultivation in photobioreactors offers a nature-based solution to improve indoor air quality by capturing pollutants. This technology presents a promising, sustainable approach to mitigate health risks associated with poor indoor environments.

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Area of Science:

  • Environmental Science
  • Biotechnology
  • Urban Ecology

Background:

  • Urbanization exacerbates indoor air quality issues, leading to significant health and economic consequences.
  • Poor indoor air quality (IAQ) is a growing concern, impacting human health and productivity due to increased time spent indoors.

Purpose of the Study:

  • To analyze current challenges and nature-based solutions for improving indoor air quality.
  • To evaluate the potential of microalgae cultivation in photobioreactors as an indoor air purification system.

Main Methods:

  • Review and analysis of existing literature on indoor air quality and microalgae-based solutions.
  • Assessment of different photobioreactor designs and commercial-scale implementations.
  • Critical analysis of microalgae purification systems, including advantages, disadvantages, and future research directions.

Main Results:

  • Microalgae in closed photobioreactors can effectively capture indoor pollutants like CO2 for biomass growth.
  • Several potential system layouts for microalgae-based indoor air cleaning are identified.
  • Commercial-scale systems and their feasibility are considered.

Conclusions:

  • Microalgae-based air purification presents a sustainable, nature-based approach to enhance indoor environmental quality.
  • Further research and development are needed to optimize microalgae systems for widespread indoor application.
  • Addressing indoor air pollution through biological solutions like microalgae offers a promising path for healthier built environments.