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RISS 인기검색어
- 검색키워드
- 저자 : Sanni Samuel Eshorame (검색결과 3 건)
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Heterogeneous Catalytic Gasification of Biomass to Biofuels and Bioproducts: A Review
Sanni Samuel Eshorame,Oni Babalola Aisosa,Okoro Emeka Emmanuel 한국화학공학회 2024 Korean Journal of Chemical Engineering Vol.41 No.4
Biomass gasifi cation is one of the most viable approaches for exploiting biomass. It systemically employs several agents in stimulating the desired reactions that lead to the conversion of biomass feed stocks to fuels/other products. Owing to the biodiversity of the products of biomass gasifi cation, they are fast becoming substitutes for fossil-based products/fuels. In order to ensure optimal production of potential bioproducts, the process conditions of a gasifi cation process have to be essentially controlled within the ambience of high throughput. Based on existing literature, biomass gasifi cation to fuels is not essentially new; however, till date, none of the existing works seeks to unveil the role of heterogeneous catalysis in biomass gasifi cation toward ensuring high bioproducts yield. Heterogeneous catalysis seems to play a crucial role in biomass gasifi cation owing to the fact that catalyst involvement in gasifi cation processes helps to lower the activation energy of specifi c reactions; hence, under thermal infl uence, the catalysts tend to hasten such reactions for the desired conversions. Furthermore, it is also pertinent to take into consideration viable approaches for extending or maintaining the service life of the catalyst employed by deploying apt modalities that abate catalyst poisoning (aging, deactivation and fouling); this paper seeks to cover such challenges.
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Ayodeji Ayodele Ayoola,David Olalekan Adeniyi,Samuel Eshorame Sanni,Kamsiyonna Ikenna Osakwe,Jennifer Doom Jato 대한환경공학회 2018 Environmental Engineering Research Vol.23 No.1
Biodiesel production parameters and the impact analysis of the potential emissions from both soybean biodiesel and washing water stored in three different environmental conditions were investigated. The effects of the reaction temperature, methanol/oil mole ratio and catalyst concentration on biodiesel yield were considered. And the results showed optimum biodiesel yield of 99% obtained at 54°C, 7 methanol/oil mole ratio and 0.4 wt/wt % catalyst concentration. The potential emissions from both the biodiesel produced and washing water stored (for six weeks) in refrigerator (≤ 10°C), vacuum (50 kPa) and direct exposure to atmosphere were identified and quantified. Impact analysis of the emissions involved their categorization into: terrestrial acidification, freshwater eutrophication, human toxicity, terrestrial ecotoxicity, climate change and freshwater ecotoxicity. Freshwater ecotoxicity category had the most pronounced negative impact of the potential emissions with 5.237710<SUP>-2</SUP> kg 1,4-DB eq. emissions in Atmosphere, 4.702610<SUP>-2</SUP> kg 1,4-DB eq. emissions in Refrigerator and 3.966110<SUP>-2</SUP> kg 1,4-DB eq. emissions in Vacuum. Climate change had the least effect of the emissions with 6.21410<SUP>-6</SUP> kg CO₂ eq. in Atmosphere, 3.9310<SUP>-6</SUP> kg CO₂ eq. in Refrigerator and 1.6710-6 kg CO₂ eq. in Vacuum. The study showed that the order of preference of the storage environments of biodiesel is vacuum environment, refrigerated condition and exposure to atmosphere.
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Harvesting Electricity from CO2 Emission: Opportunities, Challenges and Future Prospects
Peter Adeniyi Alaba,Shaukat Ali Mazari,Hamisu Umar Farouk,Samuel Eshorame Sanni,Oluranti Agboola,Ching Shya Lee,Faisal Abnisa,Mohamed Kheireddine Aroua,Wan Mohd Ashri Wan Daud 한국정밀공학회 2021 International Journal of Precision Engineering and Vol.8 No.3
The ever-increasing CO2 emission has necessitated the search for suitable technologies for CO2 utilization at a low cost. Recently, a novel concept called reactive gas electrosorption (RGE) for energy harvesting from CO2 emission, which could boost the efficiency of a thermal power plant by 5% was proposed by Hamelers and coworkers. The concept involves mixing of air stream with a low CO2 concentration with a stream of high CO2 concentration in an alkaline aqueous electrolyte. However, this concept is faced with the challenges of designs specific for CO2-electrolyte, and inadequate performance of the electrode materials. Therefore, this study showcases electricity generation opportunities from CO2 via RGE and discussed challenges and prospect. The study reveals that the drawback relating to the electrode could be solved using heteroatom doped traditional carbon materials and composite carbon-based materials, which has been successfully used in capacitive cells designed for desalination. This modification helps to improve the hydrophilicity, thereby improving electrode wettability, and suppressing faradaic reaction and co-ion repulsion effect. This improvement could enhance the charge efficiency, sorption capacity durability of electrodes and reduce the energy loss in RGE. Moreover, intensification of the membrane capacitive deionization (MCDI) process to obtain variances like enhanced MCDI and Faradaic MCDI. Hybrid capacitive deionization (HCDI) is also a promising approach for improvement of the capacitive cell design in RGE. This intensification can improve the electrosorption capacity and minimize the negative effect of faradaic reaction. The use of alternative amine like Piperazine, which is less susceptible to degradation to boosting CO2 dissolution is also suggested.
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