Novel graphite sheet (GTS) has been used as anodic catalyst in microbial fuel cell (MFC) base on Escherichia coli (ATCC 25922) and characterized by cyclic voltammogram (CV) and polarization curve. Findings from these ...
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Novel graphite sheet (GTS) has been used as anodic catalyst in microbial fuel cell (MFC) base on Escherichia coli (ATCC 25922) and characterized by cyclic voltammogram (CV) and polarization curve. Findings from these measurements revealed that GTS showed an excellent electrochemical performance. The two-chambered MFC operated with the GTS anode delivered a maximum power density of 2249 mW/m(2). Scanning electron microscopy (SEM) results indicate that the high power output could be attributed to the high biocompatibility of the GTS. These results demonstrate that the GTS is promising in the application of microbial fuel cells. (C) 2013 Elsevier B.V. All rights reserved.
Direct coal liquefaction in the heating stage of Shenhua Shendong bituminous coal was carried out in a 0.01 t/d continuous tubular facility with iron catalyst and hydrogenated anthracene and wash oil as solvent at a r...
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Direct coal liquefaction in the heating stage of Shenhua Shendong bituminous coal was carried out in a 0.01 t/d continuous tubular facility with iron catalyst and hydrogenated anthracene and wash oil as solvent at a residence time (t) of 3.56.5 min and a reaction temperature (T) of 340-450 degrees C. The results show that when t = 3.5 min and T = 340 degrees C, a cracking reaction of coal occurs, while the oil yield was almost zero. As the residence time and temperature each increase, coal conversion and product yield exhibit different change patterns. Especially when t = 6.5 min and T = 450 degrees C: under these conditions, the coal conversion and oil yield reached 83.67 and 52.27 wt?%, respectively. To investigate the liquefaction kinetics, a 8-lump reaction kinetic model which follow first-order irreversible reactions (r = k(i) dC/dt) was developed to estimate the rate constants. The results indicated that the model is perfectly valid for the heating stage, and the yield of oil and gas were mainly from coal other than preasphaltene (PAA).
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