Article history: Hydrothermal gasiﬁcation of three different industrial waste streams (distillery, oil reﬁnery and petro- Received 4 December 2015 chemical complex) was investigated in a batch reactor. Catalytic activity of three transition metal oxide Received in revised form 29 March 2016 catalysts (MnO , CuO and Co O ) with various catalyst loadings (20, 40 and 60 wt%) was also studied 2 3 4 Accepted 29 March 2016 at various temperatures (300–375 C) and reaction times (15, 30, 45 min). It was revealed that distillery Available online 30 March 2016 wastewater possessed a great potential for hydrogen production compared to other wastewaters. MnO was determined as a weak catalyst for hydrothermal gasiﬁcation, while Co O was the best choice accord- 3 4 Keywords: ing to both aspects of gasiﬁcation efﬁciency and H mole fraction. The order of catalytic activity of catalysts Hydrothermal for hydrogen production was as follow: Co O > CuO > MnO . It was also observed that 40 wt% loading 3 4 2 Gasiﬁcation of Co O was the optimum value to gain the maximum attainable hydrogen from distillery wastewater. 3 4 Hydrogen Moreover, higher temperature (375 C) and longer reaction time (45 min) were favorable
The Journal of Supercritical Fluids – Elsevier
Published: Aug 1, 2016
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