Bioresource Technology 249 (2018) 599–604 Contents lists available at ScienceDirect Bioresource Technology journal homepage: www.elsevier.com/locate/biortech Rheological properties of microalgae slurry for application in hydrothermal pretreatment systems Hao Chen, Qian Fu , Qiang Liao, Hong Zhang, Yun Huang, Ao Xia, Xun Zhu Key Laboratory of Low-grade Energy Utilization Technologies and Systems, Chongqing University, Ministry of Education, Chongqing 400044, China Institute of Engineering Thermophysics, Chongqing University, Chongqing 400044, China GR APHICAL A BSTRACT ARTICLE I NFO ABSTRACT Keywords: Herein, the rheological properties of microalgae slurries (Chlorella pyrenoidosa) under diﬀerent mass fractions Microalgae slurry and temperatures (293–373 K) were reported, which can signiﬁcantly aﬀect the energy requirement of hydro- Rheological properties thermal pretreatment process and hence the performance of fermentation processes. The experiment results Flow behavior index showed that the microalgae slurry had a shear-thinning phenomenon, suggesting that microalgae slurry is a non- Mass fraction Newtonian ﬂuid. For the ﬁrst time, the phenomenon of variable ﬂow behavior index under varying shear rates Temperature was discovered. In addition, the viscosity and yield stress of the microalgae slurries decreased from 293 to 343 K; Morphological properties above 343 K, they increased with the temperature. Scanning electron microscopy analyses showed that the surface of the
Bioresource Technology – Elsevier
Published: Feb 1, 2018
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