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1,575 Results Found

  • Article
  • Open Access
10 Citations
4,141 Views
9 Pages

22 April 2020

The research in this study focused on the operating parameters for a high efficiency hydrogen production rate system, with the aim to design a hydrolysis of the NaBH4 hydrogen production module for lightweight and efficient hydrogen production and co...

  • Article
  • Open Access
9 Citations
2,752 Views
19 Pages

Specific Organic Loading Rate Control for Improving Fermentative Hydrogen Production

  • Mélida del Pilar Anzola-Rojas,
  • Lucas Tadeu Fuess and
  • Marcelo Zaiat

Inhibiting homoacetogens is one of the main challenges in fermentative hydrogen production because these hydrogen consumers have similar growth features to hydrogen producers. Homoacetogens have been related to the excessive accumulation of biomass i...

  • Article
  • Open Access
6 Citations
3,565 Views
14 Pages

21 April 2021

This study processed the water vapor entrained in the NaBH4 hydrogen production reaction inside the primary hydrogen production tank through the secondary hydrogen production tank, in order to increase total hydrogen production. γ-Al2O3 was used as t...

  • Article
  • Open Access
1 Citations
5,534 Views
17 Pages

25 September 2025

Green H2 production using electrolyzer technology is an emerging method in the current mandate, using renewable-based power sources integrated with electrolyzer technology. Prior research has been extensively studied to understand the effects of inte...

  • Feature Paper
  • Article
  • Open Access
6 Citations
2,987 Views
13 Pages

13 December 2022

In this paper, the results of an experimental study on hydrogen production at a tungsten discharge electrode with negative polarity in the DC electrolysis of a typical 10 wt% Na2CO3 aqueous solution in three operational regimes (the Faradaic, transit...

  • Feature Paper
  • Review
  • Open Access
27 Citations
11,059 Views
40 Pages

12 October 2022

This paper reviews the progress in applying the plasma-driven solution electrolysis (PDSE), which is also referred to as the contact glow-discharge electrolysis (CGDE) or plasma electrolysis, for hydrogen production. The physicochemical processes res...

  • Article
  • Open Access
3 Citations
2,547 Views
14 Pages

Supercritical water gasification (SCWG) of coal is a promising clean coal technology, which discards the traditional coal combustion and oxidation reaction to release carbon dioxide and other pollutants and replaces coal with a gasification reduction...

  • Article
  • Open Access
5 Citations
1,780 Views
15 Pages

19 July 2025

Hydrogen is increasingly recognized as a key element of the transition to a low-carbon energy system, leading to a growing interest in accurate and sustainable assessment of its economic viability. Levelized Cost of Hydrogen (LCOH) is one of the most...

  • Feature Paper
  • Article
  • Open Access
18 Citations
5,380 Views
12 Pages

3 March 2022

In this paper, a method of efficient hydrogen production using low-power electrolysis based on pre-magnetic polarization was proposed in order to improve the rate of hydrogen production by water electrolysis, with reduced energy consumption, molecula...

  • Review
  • Open Access
19 Citations
3,496 Views
24 Pages

Influence of Nanomaterials and Other Factors on Biohydrogen Production Rates in Microbial Electrolysis Cells—A Review

  • Nabil. K. Abd-Elrahman,
  • Nuha Al-Harbi,
  • Yas Al-Hadeethi,
  • Adel Bandar Alruqi,
  • Hiba Mohammed,
  • Ahmad Umar and
  • Sheikh Akbar

6 December 2022

Microbial Electrolysis Cells (MECs) are one of the bioreactors that have been used to produce bio-hydrogen by biological methods. The objective of this comprehensive review is to study the effects of MEC configuration (single-chamber and double-chamb...

  • Communication
  • Open Access
1,394 Views
7 Pages

7 December 2024

Sorghum distillers grains (SDGs) produced from a sorghum liquor company were used for generating biohydrogen via dark fermentation at pH 4.5–6.5 and 55 °C with a batch test, and the biohydrogen electricity generation potential was evaluated...

  • Article
  • Open Access
21 Citations
2,907 Views
12 Pages

In this present investigation, a packed-filter bioreactor was employed to produce hydrogen utilizing an expired soft drink as a substrate. The effects of feeding substrate concentrations ranging from 19.51, 10.19, 5.34, 3.48, to 2.51 g total sugar/L...

  • Feature Paper
  • Article
  • Open Access
2 Citations
1,630 Views
20 Pages

Hydrogen Production from Winery Wastewater Through a Dual-Chamber Microbial Electrolysis Cell

  • Ana Baía,
  • Alonso I. Arroyo-Escoto,
  • Nuno Ramos,
  • Bilel Abdelkarim,
  • Marta Pereira,
  • Maria C. Fernandes,
  • Yifeng Zhang and
  • Annabel Fernandes

9 June 2025

This study explores the feasibility of producing biohydrogen from winery wastewater using a dual-chamber microbial electrolysis cell (MEC). A mixed microbial consortium pre-adapted to heavy-metal environments and enriched with Geobacter sulfurreducen...

  • Article
  • Open Access
22 Citations
5,112 Views
12 Pages

29 August 2018

In this study, we prepared carbon self-doped carbon nitride nanosheets through a glucose synergic co-condensation method. In the carbon self-doped structure, the N atoms in the triazine rings were substituted by C atoms, resulting in enhanced visible...

  • Article
  • Open Access
1,550 Views
20 Pages

A Study on the Influence Regulation of Surface Integrity on the Corrosion Resistance of Hydrogen Production Reactor Material

  • Shengfang Zhang,
  • Zhiyi Leng,
  • Wenzhe Wang,
  • Hongtao Gu,
  • Jian Yin,
  • Ziguang Wang and
  • Yu Liu

6 July 2023

Corrosion can hurt the quality and service life of a workpiece, which could create potential safety hazards. However, improving the workpiece’s surface integrity through surface treatment could improve the effect of corrosion resistance. To stu...

  • Article
  • Open Access
14 Citations
6,473 Views
17 Pages

Studies on Water–Aluminum Scrap Reaction Kinetics in Two Steps and the Efficiency of Green Hydrogen Production

  • Ansis Mezulis,
  • Christiaan Richter,
  • Peteris Lesnicenoks,
  • Ainars Knoks,
  • Sarunas Varnagiris,
  • Marius Urbonavicius,
  • Darius Milcius and
  • Janis Kleperis

22 July 2023

This work aims to explain aluminum hydrolysis reaction kinetics based on a properly chosen theoretical model with machined aluminum waste chips as well as alkali solutions up to 1M as a promoter and to estimate the overall reaction profit. The purpos...

  • Article
  • Open Access
31 Citations
5,366 Views
20 Pages

31 August 2019

This study investigates the applicability of the Leven–Marquardt algorithm, Bayesian regularization, and a scaled conjugate gradient algorithm as training algorithms for an artificial neural network (ANN) predictively modeling the rate of CO and H2 p...

  • Article
  • Open Access
21 Citations
8,513 Views
29 Pages

Investigating Methane, Carbon Dioxide, Ammonia, and Hydrogen Sulphide Content in Agricultural Waste during Biogas Production

  • Ephodia Sihlangu,
  • Dibungi Luseba,
  • Thierry Regnier,
  • Primrose Magama,
  • Idan Chiyanzu and
  • Khathutshelo Agree Nephawe

17 June 2024

The agricultural industry produces a substantial quantity of organic waste, and finding a suitable method for disposing of this highly biodegradable solid waste is a difficult task. The utilisation of anaerobic digestion for agricultural waste is a v...

  • Review
  • Open Access
6 Citations
3,257 Views
25 Pages

3 September 2023

Hydrogen has been widely considered to hold promise for solving challenges associated with the increasing demand for green energy. While many chemical and biochemical processes produce molecular hydrogen as byproducts, electrochemical approaches usin...

  • Article
  • Open Access
76 Citations
13,519 Views
18 Pages

Microbial fuel cells (MFCs) and microbial electrolysis cells (MECs) are promising bioelectrochemical systems (BESs) for simultaneous wastewater treatment and energy/resource recovery. Unlike conventional fuel cells that are based on stable chemical r...

  • Article
  • Open Access
13 Citations
2,042 Views
22 Pages

Co and Co3O4 in the Hydrolysis of Boron-Containing Hydrides: H2O Activation on the Metal and Oxide Active Centers

  • Vladislav R. Butenko,
  • Oksana V. Komova,
  • Valentina I. Simagina,
  • Inna L. Lipatnikova,
  • Anna M. Ozerova,
  • Natalya A. Danilova,
  • Vladimir A. Rogov,
  • Galina V. Odegova,
  • Olga A. Bulavchenko and
  • Olga V. Netskina
  • + 1 author

13 April 2024

This work focuses on the comparison of H2 evolution in the hydrolysis of boron-containing hydrides (NaBH4, NH3BH3, and (CH2NH2BH3)2) over the Co metal catalyst and the Co3O4-based catalysts. The Co3O4 catalysts were activated in the reaction medium,...

  • Article
  • Open Access
7 Citations
4,604 Views
13 Pages

Product Inhibition of Biological Hydrogen Production in Batch Reactors

  • Subhashis Das,
  • Rajnish Kaur Calay,
  • Ranjana Chowdhury,
  • Kaustav Nath and
  • Fasil Ejigu Eregno

12 March 2020

In this paper, the inhibitory effects of added hydrogen in reactor headspace on fermentative hydrogen production from acidogenesis of glucose by a bacterium, Clostridium acetobutylicum, was investigated experimentally in a batch reactor. It was obser...

  • Article
  • Open Access
8 Citations
3,650 Views
22 Pages

30 October 2024

A proton exchange membrane electrolyzer can effectively utilize the electricity generated by intermittent solar power. Different methods of generating electricity may have different efficiencies and hydrogen production rates. Two coupled systems, nam...

  • Article
  • Open Access
7 Citations
3,108 Views
17 Pages

30 September 2023

The power quality of hydrogen production converters is related to the characteristics of electrolytic hydrogen production, which is crucial to efficiency, power loss and other performance factors of hydrogen production. In order to explore the influe...

  • Article
  • Open Access
1,156 Views
21 Pages

This study investigates the efficient biogenic production of hydrogen via the thermophilic bacterium Thermotoga neapolitana, focusing on optimising process configurations to maximise yield and productivity. To determine optimal conditions, a 1 L anae...

  • Article
  • Open Access
7 Citations
3,412 Views
16 Pages

29 November 2022

In this study, a thermodynamic analysis of the low temperature autothermal reforming (ATR) of dimethyl ether (DME) for hydrogen production was conducted. The Pd/Zn/γ-Al2O3 catalyst coated on the honeycomb cordierite ceramic was applied to catal...

  • Article
  • Open Access
3 Citations
2,965 Views
46 Pages

22 February 2024

To improve the recovery of waste heat and avoid the problem of abandoning wind and solar energy, a multi-energy complementary distributed energy system (MECDES) is proposed, integrating waste heat and surplus electricity for hydrogen storage. The sys...

  • Article
  • Open Access
2,374 Views
24 Pages

26 October 2019

The relationship between performance and working conditions in photobioreactor hydrogen production systems illuminated by a variable intensity light source has been described quantitatively using relational expressions. First, based on the finite vol...

  • Article
  • Open Access
1 Citations
707 Views
21 Pages

23 October 2025

Underground hydrogen storage in aquifers is a promising solution to address the imbalance between energy supply and demand, yet its practical implementation requires optimized strategies to ensure high efficiency and economic viability. To improve th...

  • Article
  • Open Access
2,347 Views
16 Pages

25 February 2025

Driven by dual-carbon targets, marine engines are accelerating their transition towards low-carbon and zero-carbon. Ammonium–hydrogen fusion fuel is considered to be one of the most promising fuels for ship decarbonization. Using non-thermal pl...

  • Review
  • Open Access
73 Citations
11,760 Views
18 Pages

Photo-Fermentative Bacteria Used for Hydrogen Production

  • Soumya Gupta,
  • Annabel Fernandes,
  • Ana Lopes,
  • Laura Grasa and
  • Jesús Salafranca

31 January 2024

Photo-fermentation is an efficient hydrogen production pathway in which purple non-sulfur bacteria (PNSB) play an active role and produce hydrogen as a part of their metabolism under optimal conditions. These bacteria work under the influence of ligh...

  • Article
  • Open Access
2 Citations
2,320 Views
11 Pages

Ultrafast Hydrogen Production via Hydrolysis of MgH2-NaH Composite

  • Zhao Zhang,
  • Zhenji Li,
  • Wei Zhao,
  • Yushan Zhang,
  • Chong Peng,
  • Changcheng Liu and
  • Li Guo

12 September 2024

Magnesium hydride (MgH2) has attracted considerable interest due to a number of favourable characteristics for hydrogen production via hydrolysis. In this study, MgH2-NaH composites with varying composition ratios were prepared by ball milling for di...

  • Article
  • Open Access
21 Citations
6,410 Views
19 Pages

Forecasting Development of Green Hydrogen Production Technologies Using Component-Based Learning Curves

  • Svetlana Revinova,
  • Inna Lazanyuk,
  • Svetlana Ratner and
  • Konstantin Gomonov

25 May 2023

Hydrogen energy is expected to become one of the most efficient ways to decarbonize global energy and transportation systems. Green hydrogen production costs are currently high but are likely to decline due to the economy of scale and learning-by-doi...

  • Article
  • Open Access
4 Citations
3,382 Views
15 Pages

16 December 2022

Studies of storage and production of hydrogen, which is an alternative to fossil fuels, have been intensified. Hydrogen production from metal borohydrides via catalyst is very attractive because of its advantages, such as controlled production, high...

  • Article
  • Open Access
6 Citations
1,851 Views
16 Pages

The Role of Microstructural Length Scale in Hydrogen Generation Features of an Al-Sn-Fe Alloy

  • Andre Barros,
  • Camila Konno,
  • Andrei de Paula,
  • Cassio Silva,
  • Amauri Garcia and
  • Noé Cheung

2 February 2024

The reaction of water with Al-based alloys presents a promising alternative for on-board hydrogen production. This method, free from carbon emissions, has the advantage of addressing issues related to hydrogen storage and logistics. Al-Sn-Fe alloys a...

  • Article
  • Open Access
20 Citations
3,613 Views
8 Pages

30 March 2020

China has plenty of starch-rich agricultural leftovers, which can be degraded and further utilized for biogas production. Potato, which has more and more cultivated areas, was taken as a substrate. The pH, OD540, biogas yield, hydrogen yield, biogas...

  • Article
  • Open Access
21 Citations
5,417 Views
14 Pages

Photoelectrocatalytic H2 and H2O2 Production Using Visible-Light-Absorbing Photoanodes

  • Ioannis Papagiannis,
  • Elias Doukas,
  • Alexandros Kalarakis,
  • George Avgouropoulos and
  • Panagiotis Lianos

6 March 2019

Hydrogen and hydrogen peroxide have been photoelectrocatalytically produced by electrocatalytic reduction using simple carbon electrodes made by depositing a mesoporous carbon film on carbon cloth. Visible-light-absorbing photoanodes have been constr...

  • Article
  • Open Access
1 Citations
1,650 Views
11 Pages

27 November 2023

This research focuses on using natural renewable water resources, filters, and performance recovery systems to reduce the cost of generating pure hydrogen for Proton Exchange Membrane Fuel Cells (PEMFCs). This study uses de-ionized (DI) water, tap wa...

  • Article
  • Open Access
8 Citations
2,761 Views
21 Pages

Parametric Study and Optimization of Hydrogen Production Systems Based on Solar/Wind Hybrid Renewable Energies: A Case Study in Kuqa, China

  • Tianqi Yang,
  • Xianglin Yan,
  • Wenchao Cai,
  • Hao Luo,
  • Nianfeng Xu,
  • Liang Tong,
  • Fei Yan,
  • Richard Chahine and
  • Jinsheng Xiao

20 January 2024

Based on the concept of sustainable development, to promote the development and application of renewable energy and enhance the capacity of renewable energy consumption, this paper studies the design and optimization of renewable energy hydrogen prod...

  • Article
  • Open Access
24 Citations
2,435 Views
11 Pages

Adaptive Network Fuzzy Inference System and Particle Swarm Optimization of Biohydrogen Production Process

  • Tareq Salameh,
  • Enas Taha Sayed,
  • A. G. Olabi,
  • Ismail I. Hdaib,
  • Yazeed Allan,
  • Malek Alkasrawi and
  • Mohammad Ali Abdelkareem

26 September 2022

Green hydrogen is considered to be one of the best candidates for fossil fuels in the near future. Bio-hydrogen production from the dark fermentation of organic materials, including organic wastes, is one of the most cost-effective and promising meth...

  • Article
  • Open Access
34 Citations
4,003 Views
11 Pages

Hydrothermally Synthesized Ag@MoS2 Composite for Enhanced Photocatalytic Hydrogen Production

  • Anuja A. Yadav,
  • Yuvaraj M. Hunge,
  • Ananta G. Dhodamani and
  • Seok-Won Kang

10 April 2023

Photocatalytic hydrogen production is a green, cost-effective, simple, and pollution-free technology for the supply of clean energy, which plays an important role in alleviating the fossil fuel crisis caused by exponentially grown energy consumption....

  • Feature Paper
  • Article
  • Open Access
15 Citations
4,492 Views
11 Pages

20 September 2022

This research study investigates the modelling and simulation of biomass anaerobic dark fermentation in bio-hydrogen production in a continuous plug flow reactor. A CFD multiphase full transient model in long-term horizons was adopted to model dark f...

  • Article
  • Open Access
12 Citations
3,530 Views
12 Pages

16 June 2022

Multicomponent collaborative anaerobic fermentation has been considered a promising technology for treating perishable organic solid wastes and producing clean energy. This study evaluated the potential of hydrogen production by thermophilic dry anae...

  • Article
  • Open Access
12 Citations
2,544 Views
13 Pages

23 September 2022

Screening new Clostridium strains that can efficiently utilize lignocellulose to produce hydrogen is extremely important for dark fermentative hydrogen production. In this study, a mesophilic hydrogen-producing bacterium, identified as Clostridium po...

  • Proceeding Paper
  • Open Access
9 Citations
2,751 Views
7 Pages

Liquid waste frequently contains a large variety of hazardous substances, including tartrazine-based dyes. These color compounds can present a significant hazard to both human health and the natural environment. Moreover, there is a growing demand fo...

  • Article
  • Open Access
20 Citations
4,891 Views
18 Pages

Optimization of High-Temperature Electrolysis System for Hydrogen Production Considering High-Temperature Degradation

  • Jiming Yuan,
  • Zeming Li,
  • Benfeng Yuan,
  • Guoping Xiao,
  • Tao Li and
  • Jian-Qiang Wang

10 March 2023

Solid oxide electrolysis cells (SOECs) have great application prospects because of their excellent performance, but the long-term applications of the stacks are restricted by the structural degradation under the high-temperature conditions. Therefore...

  • Article
  • Open Access
5 Citations
2,427 Views
15 Pages

Optimization of Renewable Energy Hydrogen Production Systems Using Volatility Improved Multi-Objective Particle Swarm Algorithm

  • Hui Wang,
  • Xiaowen Chen,
  • Qianpeng Yang,
  • Bowen Li,
  • Zongyu Yue,
  • Jeffrey Dankwa Ampah,
  • Haifeng Liu and
  • Mingfa Yao

15 May 2024

Optimizing the energy structure to effectively enhance the integration level of renewable energy is an important pathway for achieving dual carbon goals. This study utilizes an improved multi-objective particle swarm optimization algorithm based on l...

  • Article
  • Open Access
6 Citations
4,239 Views
20 Pages

11 January 2024

Air pollutants such as carbon dioxide and nitrogen oxides emitted by the combustion of fossil fuels have become the subject of increasing concern. Hydrogen has accordingly emerged as a promising low-emission alternative energy source. Among the vario...

  • Feature Paper
  • Article
  • Open Access
20 Citations
7,435 Views
14 Pages

17 January 2018

Surface corrosion product formation is one of the important factors affecting the corrosion rate and hydrogen uptake in a H2S environment. However, it is still unclear how the base material composition will affect the corrosion products that are gene...

  • Article
  • Open Access
4 Citations
3,018 Views
12 Pages

23 May 2019

When 2205 duplex stainless steel (DSS) is immersed in simulated seawater under high hydrostatic pressure, or in an electrochemically hydrogen charged state, a spindle-shaped product is found in the ferrite phase that seriously deteriorates the mechan...

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