期刊
BIORESOURCE TECHNOLOGY
卷 241, 期 -, 页码 661-668出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.biortech.2017.05.175
关键词
Tilted panel; Microalgae harvesting; Membrane photobioreactor; Membrane fouling; Air bubbles
资金
- Universiti Teknologi Petronas - Malaysia [0153AA-F58, 0153AA-F59]
Microalgae harvesting using membrane technology is challenging because of its high fouling propensity. As an established fouling mitigation technique, efficacy of air bubbles can be improved by maximizing the impact of shear-rates in scouring foulant. In this study, it is achieved by tilting the membrane panel. We investigate the effect of tilting angle, switching period as well as aeration rate during microalgal broth filtration. Results show that higher tilting angles (up to 20 degrees) improve permeability of up to 2.7 times of the vertical panel. In addition, operating a one-sided panel is better than a two-sided panel, in which the later involved switching mode. One-sided membrane panel only require a half of area, yet its performance is comparable with of a large-scale module. This tilted panel can lead to significant membrane cost reductions and eventually improves the competitiveness of membrane technology for microalgae harvesting application. (C) 2017 Elsevier Ltd. All rights reserved.
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