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Waste biorefineries: Enabling circular economies in developing countries.

A S Nizami1, M Rehan1, M Waqas1

  • 1Centre of Excellence in Environmental Studies (CEES), King Abdulaziz University, Jeddah, Saudi Arabia.

Bioresource Technology
|June 6, 2017
PubMed
Summary
This summary is machine-generated.

Waste biorefineries in developing countries can transform waste into valuable products like energy and materials. Implementing these facilities offers environmental benefits and economic opportunities, despite implementation challenges.

Keywords:
Circular economyFuelsNon-food feedstocksValue-added productsWaste biorefinery

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Area of Science:

  • Environmental Science
  • Chemical Engineering
  • Sustainable Development

Background:

  • Developing countries face significant waste disposal challenges.
  • Waste streams in these regions are rich in biomass and recyclable materials.
  • Existing waste management practices often lead to environmental degradation and resource loss.

Purpose of the Study:

  • To assess the potential of waste biorefineries in developing nations.
  • To explore waste-to-energy and waste-to-value-added product opportunities.
  • To identify challenges and benefits associated with biorefinery implementation.

Main Methods:

  • Review of various biorefinery technologies (fermentation, anaerobic digestion, pyrolysis, incineration, gasification).
  • Analysis of waste characterization as a basis for technology selection.
  • Inclusion of Life Cycle Assessment (LCA) studies to evaluate environmental impact and challenges.

Main Results:

  • Waste biorefineries can convert diverse waste streams into fuels, power, heat, and valuable products.
  • Implementation offers benefits such as energy generation, land savings, job creation, reduced landfill costs, and decreased greenhouse gas emissions.
  • Technology selection must be tailored to specific local waste characteristics.

Conclusions:

  • Waste biorefineries present a viable solution for waste management and resource recovery in developing countries.
  • Successful implementation requires careful consideration of waste composition and appropriate technology integration.
  • Biorefineries contribute to environmental sustainability and economic development, though challenges remain.