Key issues to consider in microalgae based biodiesel production

Energy Education Science and Technology Part A: Energy Science and Research 05/2012; 29(1):563-576.
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    ABSTRACT: The performance of photo microbial fuel cells (photo-MFCs) with Desmodesmus sp. A8 as cathodic microorganism under different light intensities (0, 1500, 2000, 2500, 3000, 3500 lx) was investigated. The results showed that illumination enhanced the output of the photo-MFC three-fold. When light intensity was increased from 0 to 1500 lx, cathode resistance decreased from 3152.0 to 136.7 Ω while anode resistance decreased from 13.9 to 11.3 Ω. In addition, the cathode potential increased from −0.44 to −0.33 V (vs. Ag/AgCl) and reached a plateau as the light intensity was increased from 1500 lx to 3500 lx. Accompanied with the potential change, dissolved oxygen (DO) within the cathode biofilm increased to 13.2 mg L−1 under light intensity of 3500 lx and dropped to 7.5 mg L−1 at 1500 lx. This work demonstrated that light intensity profoundly impacted the performance of photo-MFC with Desmodesmus sp. A8 through changing the DO.
    Applied Energy 01/2014; 116:86-90. · 5.26 Impact Factor
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    ABSTRACT: In this study, the effect of anti-oxidant additives on performance and emissions of a biofuelled engine was investigated experimentally and compared with diesel fuel. For this study four fuel sample including B0 (100% diesel fuel), B100 (100% palm biodiesel), B35 (35% palm biodiesel and 65% diesel) and B35+1% (B35 with 1% additives) was used in a multi cylinder compression ignition engine. Performance and emissions were investigated at various engine speeds of 1500 rpm to 4000 rpm at an interval of 250 rpm and with 50% throttle opening. To evaluate the performance characteristics brake power (BP), brake specific fuel consumption (BSFC) and exhaust temperature were tested whereas in case of emissions test nitrogen oxides (NO x), carbon monoxide (CO), total hydrocarbon (THC) and carbon dioxide (CO 2) were measured. The results showed that using 1% anti-oxidant additive with higher percentages (35%) of palm biodiesel blend gave 2.7% lower brake power but it significantly reduced exhaust emissions including NO x emissions than diesel fuel. Based on this study fuel "B35+1%" (35% biodiesel with 1% additives) was achieved as a promising alternative fuel for compression ignition engine.
    Energy Education Science and Technology Part A: Energy Science and Research. 04/2012; 30(SI-1):1-12.


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May 16, 2014