A strategy for urban outdoor production of high-concentration algal biomass for green biorefining

被引：10
作者：
Lim, Chun Yong [1 ]
Chen, Chia-Lung [2 ]
Wang, Jing-Yuan [1 ,2 ]
机构：
[1] Nanyang Technol Univ, Sch Civil & Environm Engn, Singapore 639798, Singapore
[2] Nanyang Environm & Water Res Inst, Residues & Resource Reclamat Ctr, Singapore 637141, Singapore
来源：
BIORESOURCE TECHNOLOGY | 2013年 / 135卷
关键词：
Chitosan flocculation; Chlorella sorokiniana; Suspended-cell phytoremediation; Mixotrophic microalgae; Nutrient removal; COAGULATION-MEMBRANE FILTRATION; CHLORELLA-VULGARIS; MIXOTROPHIC GROWTH; WASTE-WATER; CHITOSAN; FLOCCULATION; PHOTOBIOREACTOR; CULTIVATION; SOROKINIANA; MICROALGAE;
D O I：
10.1016/j.biortech.2012.10.028
中图分类号：
S2 [农业工程];
学科分类号：
0828 ;
摘要：
The present study was to investigate the feasibility of carrying out effective microalgae cultivation and high-rate tertiary wastewater treatment simultaneously in a vertical sequencing batch photobioreactor with small areal footprint, suitable for sustainable urban microalgae production. For 15 consecutive days, Chlorella sorokiniana was cultivated in synthetic wastewater under various trophic conditions. A cycle of 12-h heterotrophic: 12-h mixotrophic condition produced 0.98 g l(-1) d(-1) of algal biomass in tandem with a 94.7% removal of 254.4 mg l(-1) C-acetate, a 100% removal of 84.7 mg l(-1) N-NH4 and a removal of 15.0 mg l(-1) P-PO4. The cells were harvested via cost-effective chitosan flocculation with multiple dosing (3 times) applying established chitosan:cell ratio (1:300 w/w) and pH control (6.3-6.8). Reproducible flocculation efficiencies of greater than 99% and high-concentration algal broths (>20% solids) were achieved. (C) 2012 Elsevier Ltd. All rights reserved.
引用
收藏
页码：175 / 181
页数：7
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