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Investigating the Effects of Eichhornia Crassipes Biodiesel and Liquefied Petroleum Gas on the Performance and Emissions of a Dual-Fuel Engine

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Fluid Dynamics & Materials Processing 2023年第9期19卷 2329-2343页

作者： Hawraa S.Mohammed mahmoud a.mashkour Mechanical Engineering Department University of Technology-IraqBagdadIraq

This study considers the effect of Eichhornia Crassipes Biodiesel(ECB)blends on the performances,combustion,and emission characteristics of a direct injection compression ignition engine operated in a dual-fuel mode(DFM)and equipped with an Exhaust gas recirculation technique(EGR).In particular,a single-cylinder,four-stroke,water-cooled diesel engine was utilized and four modes of fuel operation were considered:mode I,the engine operated with an ordinary diesel fuel;mode II,the engine operated with the addition of 2.4 L/min of lique-ﬁed petroleum gas(LPG)and 20%EGR;mode III,20%ECB with 2.4 L/min LPG and 20%EGR;mode IV,40%ECB with 2.4 L/min LPG and 20%*** operation conditions were constant engine speed(1500 rpm),var-iation of load(25%,50%,75%,and 100%),full load,with a compression ratio of 18,and a time injection of 23°BTDC(Before top died center).With regard to engine emissions,carbon dioxide(CO_(2)),carbon monoxide(CO),hydrocarbons(UHC),and nitrogen oxide(NOX)were measured using a gas *** smoke opacity was measured using an OPABOX smoke *** comparing the results related to the different modes with mode I at full load,the BTE(Brake thermal efﬁciency)increased by 20.17%,11.45%,and 12.66%with modes II,III,and IV,*** comparison to the results for mode II,the BTE decreased due to the combustion of ECB blends by 7.26%and 6.24%for mode III and mode IV,respectively,at full *** comparison to mode II,the Brake speciﬁc energy consumption(BSEC)increased with the ECB *** ECB blends,there is a noticeable decrease in the CO,CO_(2),and UHC emissions at a partial ***,the 20%ECB has no effect on CO emissions at full *** modes II and IV,the CO_(2)increased by 33.33%and 19%,respectively,while the UHC emissions were reduced by 14.49%for mode III and 26.08%for mode *** smoke of mode III was lower by 7.21%,but for mode IV,it was higher by 12.37%.In addition,with mode III and mode IV,the NOx emissions increased by 30.50%

关键词： Eichhornia Crassipes Biodiesel dual-fuel engine liqueﬁed petroleum gas combustion diesel engine brake thermal efﬁciency

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Catalytic performance of nano-hybrid graphene and titanium dioxide modified cathodes fabricated with facile and green technique in microbial fuel cell

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Progress in Natural Science:Materials International 2017年第6期27卷 647-651页

作者： M.mashkour M.Rahimnejad S.M.Pourali H.Ezoji Ahmed ElMekawy Deepak Pant Biofuel and Renewable Energy Research Center Department of Chemical Engineering Babol Noshirvani University of Technology Genetic Engineering and Biotechnology Research Institute University of Sadat City (USC) School of Chemical Engineering The University of Adelaide Separation and Conversion Technologies Flemish Institute for Technological Research (VITO)

Finite resources of the world’s fossil fuel give rise to the irresistible urge to explore alternative renewable energy routes such as microbial fuel cells（MFCs）. The limited productivity is one of the main obstacles for MFC scalability. In this study, a dual-chamber MFC was assembled and equipped with fabricated modified cathodes with titanium dioxide（TiO;） or hybrid graphene（HG） which mainly improved the catalytic activity of the *** graphite paste（GP） bare electrode was modified by both nanomaterials using a green and facile *** results showed that the modified cathodes resulted in a considerable improvement for the MFC performance,i.e., the power density reaching levels of 80 mW/m;for GP-TiO;and 220 mW/m;for GP-HG compared to 30 mW/m;for GP electrode. Additionally, the modified electrodes exhibited lower charge transfer resistance(R;) compared to the bare electrode. Therefore, these modified electrodes, fabricated by an eco-friendly method,could be used as alternatives to the precious expensive metals like Pt.

关键词： Microbial fuel cell Cathode Graphite paste Titanium dioxide Graphene oxide Power density

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