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Most Cited

  • Review
  • Open Access
204 Citations
31,967 Views
22 Pages

3 February 2023

Hydrogen has become the most promising energy carrier for the future. The spotlight is now on green hydrogen, produced with water electrolysis powered exclusively by renewable energy sources. However, several other technologies and sources are availa...

  • Review
  • Open Access
24 Citations
13,459 Views
24 Pages

28 January 2023

Natural gas flaring, with its harmful environmental, health, and economic effects, is common in the Nigerian oil and gas industry because of a lower tax regime for flared gases. Based on the adverse effects of flared gas, the Nigerian government has...

  • Review
  • Open Access
23 Citations
24,271 Views
36 Pages

2 December 2024

Excessive emissions of greenhouse gases, primarily carbon dioxide (CO2), have garnered worldwide attention due to their significant environmental impacts. Carbon capture, utilization, and storage (CCUS) techniques have emerged as effective solutions...

  • Review
  • Open Access
12 Citations
5,575 Views
24 Pages

15 March 2024

Greenhouse gases trap heat in the atmosphere, causing the Earth’s surface temperature to rise. The main greenhouse gases are carbon dioxide, methane, nitrous oxide, perfluorocarbons, hydrofluorocarbons, and sulfur hexafluoride. Human activities...

  • Article
  • Open Access
12 Citations
10,072 Views
14 Pages

Hydrogen Purification through a Membrane–Cryogenic Integrated Process: A 3 E’s (Energy, Exergy, and Economic) Assessment

  • Ahmad Naquash,
  • Amjad Riaz,
  • Fatma Yehia,
  • Yus Donald Chaniago,
  • Hankwon Lim and
  • Moonyong Lee

27 June 2023

Hydrogen (H2) is known for its clean energy characteristics. Its separation and purification to produce high-purity H2 is becoming essential to promoting a H2 economy. There are several technologies, such as pressure swing adsorption, membrane, and c...

  • Article
  • Open Access
11 Citations
3,796 Views
14 Pages

16 October 2023

Because ammonia is easier to store and transport over long distances than hydrogen, it is a promising research direction as a potential carrier for hydrogen. However, its low ignition and combustion rates pose challenges for running conventional igni...

  • Article
  • Open Access
9 Citations
3,118 Views
16 Pages

23 May 2024

Carbon-capture technologies are extremely abundant, yet they have not been applied extensively worldwide due to their high cost and technological complexities. This research studies the ability of polymerized fly ash to capture carbon dioxide (CO2) u...

  • Review
  • Open Access
9 Citations
16,827 Views
19 Pages

Portable Biogas Digester: A Review

  • Yolanda Mapantsela,
  • Patrick Mukumba,
  • KeChrist Obileke and
  • Ndanduleni Lethole

1 August 2024

To reduce and convert biodegradable waste into energy-rich biogas, anaerobic digestion technology is usually employed. Hence, this takes place inside the biogas digester. Studies have revealed that these digesters are designed and constructed using b...

  • Article
  • Open Access
8 Citations
3,409 Views
20 Pages

5 April 2023

Plant responses to air pollution have been extensively studied in urban environments. Nevertheless, detailed and holistic studies assessing their retaliation to air contaminants are still limited. The present study evaluates the effect of criteria po...

  • Review
  • Open Access
7 Citations
5,313 Views
34 Pages

17 May 2025

Hydrogen is increasingly recognized as a key contributor to a low-carbon energy future, and machine learning (ML) is emerging as a valuable tool to optimize hydrogen production processes. This review presents a comprehensive analysis of ML applicatio...

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Gases - ISSN 2673-5628