Bioresource Technology 249 (2018) 713–719 Contents lists available at ScienceDirect Bioresource Technology journal homepage: www.elsevier.com/locate/biortech The kinetics of the polyacrylic superabsorbent polymers swelling in microalgae suspension to concentrate cells density Chaoyang Wei, Yun Huang , Qiang Liao, Qian Fu, Ao Xia, Yahui Sun 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: Diﬀerent from current harvesting methods, the aim of this study was to concentrate microalgae by removing the Microalgae harvesting medium with polyacrylic superabsorbent polymers (PSAPs). This method can concentrate freshwater microalgae −1 Superabsorbent polymers Chlorella sp. at a relatively high biomass concentration of 90.23 g L . Without further dewatering, the con- Swelling kinetic centrated microalgae can be directly used to produce biofuels by oil extraction or fermentation. The kinetic Ionic strength characteristics of PSAPs swelling in diﬀerent solutions were investigated. The results indicate that the negative PSAPs recycling inﬂuence on absorbency caused by ionic strength was greater than microalgae concentration. Compared with the diﬀusion part, water absorbed by the relaxation of PSAPs was dominant and accounted for over 97%. Equilibrium
Heart & Lung: The Journal of Acute and Critical Care – Elsevier
Published: Nov 1, 2018
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