Simple hydrogen gas production method using waste silicon

Fossil fuels dependencies need to be stopped to safeguard the earth from further damage. This study focuses on the production of hydrogen (H2) gas using waste aluminum (Al) cans. Al waste cans were fed into disintegrator to produce fine powder. The hydrolysis performance of disintegrated powdered Al cans were compared with the commercial Al powder. The effect of different reaction temperatures (25 - 100°C); type of alkalis (NaOH, KOH and Ba (OH)2); and type of water sources (tap, deionized, ultrapure and distilled) for the hydrolysis process were analyzed. The Al powders were also characterized using different techniques to understand its behavior. It was found that powdered Al waste cans produced more H2 compared to commercial Al reported in the literature. The higher the reaction temperature, the higher the rate of H2 production. Deionized water maximizes the production of H2 compared to other types of water. Ba (OH)2 was found to be an unproductive alkaline for H2 production using powdered Al waste cans. The successful hydrolysis of powdered Al waste can in alkaline condition in this research has demonstrated as a cost-effective, clean and green alternative hydrogen production method.

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Faculty Opinions recommendation of Engineering hydrogen gas production from formate in a hyperthermophile by heterologous production of an 18-subunit membrane-bound complex.

Faculty Opinions – Post-Publication Peer Review of the Biomedical Literature ◽

10.3410/f.718201276.793515888 ◽

2016 ◽

Author(s):

James Coker

Keyword(s):

Gas Production ◽

Hydrogen Gas ◽

Heterologous Production ◽

Membrane Bound

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Homologous overexpression of [FeFe] hydrogenase in Enterobacter cloacae IIT-BT 08 to enhance hydrogen gas production from cheese whey

International Journal of Hydrogen Energy ◽

10.1016/j.ijhydene.2011.09.020 ◽

2011 ◽

Vol 36 (24) ◽

pp. 15573-15582 ◽

Cited By ~ 13

Author(s):

Namita Khanna ◽

Chitralekha Nag Dasgupta ◽

Preeti Mishra ◽

Debabrata Das

Keyword(s):

Cheese Whey ◽

Enterobacter Cloacae ◽

Gas Production ◽

Hydrogen Gas ◽

Homologous Overexpression

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Dose–Response Effects of 3-Nitrooxypropanol Combined with Low- and High-Concentrate Feed Proportions in the Dairy Cow Ration on Fermentation Parameters in a Rumen Simulation Technique

Animals ◽

10.3390/ani11061784 ◽

2021 ◽

Vol 11 (6) ◽

pp. 1784

Author(s):

Matthias Schilde ◽

Dirk von Soosten ◽

Liane Hüther ◽

Susanne Kersten ◽

Ulrich Meyer ◽

...

Keyword(s):

Dose Response ◽

Gas Production ◽

Hydrogen Gas ◽

Simulation Technique ◽

Mitigation Strategies ◽

Feed Additive ◽

Future Research ◽

Dependent Manner ◽

Dose Dependent

Methane (CH4) from ruminal feed degradation is a major pollutant from ruminant livestock, which calls for mitigation strategies. The purpose of the present 4 × 2 factorial arrangement was to investigate the dose–response relationships between four doses of the CH4 inhibitor 3-nitrooxypropanol (3-NOP) and potential synergistic effects with low (LC) or high (HC) concentrate feed proportions (CFP) on CH4 reduction as both mitigation approaches differ in their mode of action (direct 3-NOP vs. indirect CFP effects). Diet substrates and 3-NOP were incubated in a rumen simulation technique to measure the concentration and production of volatile fatty acids (VFA), fermentation gases as well as substrate disappearance. Negative side effects on fermentation regarding total VFA and gas production as well as nutrient degradability were observed for neither CFP nor 3-NOP. CH4 production decreased from 10% up to 97% in a dose-dependent manner with increasing 3-NOP inclusion rate (dose: p < 0.001) but irrespective of CFP (CFP × dose: p = 0.094). Hydrogen gas accumulated correspondingly with increased 3-NOP dose (dose: p < 0.001). In vitro pH (p = 0.019) and redox potential (p = 0.066) varied by CFP, whereas the latter fluctuated with 3-NOP dose (p = 0.01). Acetate and iso-butyrate (mol %) decreased with 3-NOP dose, whereas iso-valerate increased (dose: p < 0.001). Propionate and valerate varied inconsistently due to 3-NOP supplementation. The feed additive 3-NOP was proven to be a dose-dependent yet effective CH4 inhibitor under conditions in vitro. The observed lack of additivity of increased CFP on the CH4 inhibition potential of 3-NOP needs to be verified in future research testing further diet types both in vitro and in vivo.

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Corrigendum to “Hydrogen gas production with Ni, Ni–Co and Ni–Co–P electrodeposits as potential cathode catalyst by microbial electrolysis cells” [Int J Hydrogen Energy 45 (2020) 18250–18265]

International Journal of Hydrogen Energy ◽

10.1016/j.ijhydene.2021.06.160 ◽

2021 ◽

Author(s):

Amit Kumar Chaurasia ◽

Hemant Goyal ◽

Prasenjit Mondal

Keyword(s):

Gas Production ◽

Hydrogen Gas ◽

Hydrogen Energy ◽

Cathode Catalyst ◽

Microbial Electrolysis Cells ◽

Electrolysis Cells ◽

Microbial Electrolysis

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Photodeposition of Ag Nanocrystals onto TiO2 Nanotube Platform for Enhanced Water Splitting and Hydrogen Gas Production

Journal of Nanomaterials ◽

10.1155/2020/7480367 ◽

2020 ◽

Vol 2020 ◽

pp. 1-11 ◽

Cited By ~ 2

Author(s):

Nur Aimi Jani ◽

Choonyian Haw ◽

Weesiong Chiu ◽

Saadah Abdul Rahman ◽

Poisim Khiew ◽

...

Keyword(s):

Water Splitting ◽

Gas Production ◽

Hydrogen Gas ◽

Current Work ◽

Plasmonic Resonance ◽

X Ray Diffraction ◽

X Ray ◽

Production Of Hydrogen ◽

Production Activity ◽

Ag Ncs

Current work reports the study of Ag nanocrystals (NCs) decorated doubly anodized (DA) TiO2 nanotubes (NTs) thin film as an efficient photoelectrode material for water splitting and photocatalytic hydrogen gas production. DA process has been shown to be capable of producing less defective NTs and creating additional spacious gaps in between NT bundles to allow efficient and uniform integration of Ag NCs. By employing photoreduction method, Ag NCs can be deposited directly onto NTs, where the size and density of coverage can be maneuvered by merely varying the concentration of Ag precursors. Field emission scanning electron microscope (FESEM) images show that the Ag NCs with controllable size are homogeneously decorated onto the walls of NTs with random yet uniform distribution. X-ray diffraction (XRD) results confirm the formation of anatase TiO2 NTs and Ag NCs, which can be well indexed to standard patterns. The decoration of metallic Ag NCs onto the surface of NTs demonstrates a significant enhancement in the photoconversion efficiency as compared to that of pristine TiO2 NTs. Additionally, the as-prepared nanocomposite film also shows improved efficiency when used as a photocatalyst platform in the production of hydrogen gas. Such improvement in the performance of water splitting and photocatalytic hydrogen gas production activity can be credited to the surface plasmonic resonance of Ag NCs present on the surface of the NTs, which renders improved light absorption and better charge separation. The current work can serve as a model of study for designing more advanced nanoarchitecture photoelectrode for renewable energy application.

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