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| Naji, M. |
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| Motta, Antonella |
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| Aletan, Dirar |
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| Mohamed, Tarek |
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| Ertürk, Emre |
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| Taccardi, Nicola |
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| Kononenko, Denys |
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| Petrov, R. H. | Madrid |
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| Alshaaer, Mazen | Brussels |
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| Bih, L. |
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| Casati, R. |
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| Muller, Hermance |
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| Kočí, Jan | Prague |
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| Šuljagić, Marija |
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| Kalteremidou, Kalliopi-Artemi | Brussels |
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| Azam, Siraj |
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| Ospanova, Alyiya |
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| Blanpain, Bart |
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| Ali, M. A. |
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| Popa, V. |
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| Rančić, M. |
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| Ollier, Nadège |
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| Azevedo, Nuno Monteiro |
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| Landes, Michael |
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| Rignanese, Gian-Marco |
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Afzal, Waheed
University of Aberdeen
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (6/6 displayed)
- 2024Investigating the quantum size effects of multi-walled carbon nanotubes (MWCNTs) in photocatalytic fermentative biohydrogen productioncitations
- 2024Investigating the effects of nano-Fe₃O₄ and MWCNTs on the filtration and rheological properties of water-based muds at elevated temperature and pressurecitations
- 2024Plant Biomass Seed and Root Mucilagecitations
- 2022Effect of Adding Monohydrocalcite on the Microstructural Change in Cement Hydrationcitations
- 2022Evidence of scawtite and tilleyite formation at ambient conditions in hydrated Portland cement blended with freshly-precipitated nano-size calcium carbonate to reduce greenhouse gas emissionscitations
- 2022The physicochemical properties of Portland cement blended with calcium carbonate with different morphologies as a supplementary cementitious materialcitations
Places of action
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article
Investigating the quantum size effects of multi-walled carbon nanotubes (MWCNTs) in photocatalytic fermentative biohydrogen production
Abstract
<p>Nanocatalysts' quantum size impacts their catalytic activity, hence surface area in nanomaterials plays a key role in controlling the charge transferring. Since multi-walled carbon nanotubes (MWCNTs) possess a large surface area as compared to bulk activated carbon (AC), thus their role in photo fermentative biohydrogen production (PFHP) from corn stover has been investigated. The physio-optical characteristics of the studied MWCNTs, and AC were characterized through the Brunauer Emmett Teller (BET), scanning electron microscope (SEM), and Raman spectroscopy. The experimental finding revealed that MWCNTs has a larger specific surface area (SSA) of 227.69 m<sup>2</sup>/g than activated carbon (AC) (126.26 m<sup>2</sup>/g). SEM and Raman results confirmed that MWCNTs have smaller sizes and more defects due to surface dangling bonds. The incorporation of MWCNTs in a photo fermentative medium showed a pronounced effect on hydrogen production. The optimal concentration of 20 mg/L MWCNTs increased the hydrogen production rate to 132.96 mL/h, 46.66% and 17.85% greater than the control group (CG) and AC, respectively, and reduced the lag period by 12 h. At 20 mg/L loading concentration, total hydrogen production was 293.84 mL, 2-fold and 16.24% greater than CG. The 44.85%, 100.39%, and 126.49% increase in byproducts, energy conversion efficiency (ECE), and light conversion efficiency (LCE), respectively compared to CG indicated an increase in metabolic processes, which increased total hydrogen production, suggesting that catalyst surface area is the key parameter affecting fermentative biohydrogen production catalytic efficiency.</p>