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article · Advanced Energy and Sustainability Research

Recent Advances and Challenges of Hydrogen Production Technologies via Renewable Energy Sources

2024100 citationsOpen accessBahir Dar University

In plain language

Fossil fuels satisfy the majority of global energy demand but contribute to climate change, ecosystem damage, and eventual resource depletion. Transitioning to renewable alternatives is essential for decarbonising the world economy, positioning green hydrogen as a critical solution. Several hydrogen production methods, including fossil fuel conversion, biomass processing, water electrolysis, microbial fermentation, and photocatalysis, present distinct trade-offs across technological viability, cost, energy consumption, and environmental impact. Currently, the chemical sector utilises green hydrogen principally to generate green methanol and green ammonia as alternative energy carriers. Analysing current energy demands and renewable energy developments demonstrates the significant potential of hydrogen as a future fuel alongside notable implementation challenges and industrial opportunities.

Key takeaways

  • Green hydrogen is an essential alternative to depleting fossil fuels for global decarbonisation.
  • Production methods such as electrolysis, biomass conversion, microbial fermentation, and photocatalysis vary widely in cost, energy use, and environmental impact.
  • The chemical industry currently applies green hydrogen primarily to synthesise green ammonia and green methanol as alternative fuels.
  • Realising the potential of hydrogen as a widespread future fuel requires overcoming notable technical and economic challenges.

Why it matters

Widespread reliance on fossil fuels drives irreversible climate shifts and environmental damage. Clarifying the advantages and drawbacks of different hydrogen production technologies helps energy planners and industries understand how to replace carbon-intensive fuels. Because hydrogen is already used to manufacture green methanol and ammonia, tracking these production methods is crucial for guiding cleaner industrial processes.

Commercialisation angle

The primary commercial users highlighted are chemical manufacturers producing green methanol and green ammonia. While these chemical applications represent existing industrial uses, other evaluated generation methods, including microbial fermentation and photocatalysis, face ongoing technical and economic hurdles. The work encompasses technologies ranging from early-stage research to established industrial practices, though the abstract does not specify concrete timelines for market deployment.

AI-generated from the published abstract. Always read the original work before citing.

Abstract

Currently, fossil fuels play a major role in meeting the world's energy demand. Fossil fuels, in contrast, threaten the planet's ecosystems and biological processes, contribute to global warming, and result in unfavorable climatic shifts. These energy sources are also finite and will eventually deplete. Thus, energy transition, which is the key from fossil fuels to renewable energy sources, is regarded as an essential course of action for decarbonizing the global economy and reducing the catastrophic and irreversible effects of climate change. Thereby using/consuming green hydrogen energy is a vital solution to meet the world's challenges. Subsequently, the pros and cons of several hydrogen generation methods, such as the conversion of fossil fuels, biomass, water electrolysis, microbial fermentation, and photocatalysis, are then compared and outlined in terms of their technologies, economies, consumption of energy, environmental aspects, and costs. Currently, the chemical industry uses green hydrogen (H 2 ) primarily to produce green emerging fuels methanol and ammonia (NH 3 ), which are regarded as alternate sources of energy. Finally, the current state of energy demands, recent developments in renewable energy sources, and the potential of hydrogen as a future fuel are outlined. Moreover, the discussion concludes with predicted opportunities and challenges.

Research topics

  • Ammonia Synthesis and Nitrogen Reduction
  • Hydrogen Storage and Materials
  • Hybrid Renewable Energy Systems

Read the original research

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DOI: 10.1002/aesr.202300273

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