Production of mixed acids from non-pretreated red algae Gelidium amansii

被引:5
|
作者
Lee, Sung-Mok [1 ]
Choi, Min-Ho [1 ]
Hong, Won-Kyung [1 ]
Park, Jang Min [1 ]
Yu, Anna [1 ]
Lee, Jung-Suck [2 ]
Seo, Jeong-Woo [1 ]
Kim, Chul Ho [1 ]
机构
[1] KRIBB, Jeonbuk Branch Inst, Biorefinery Res Ctr, Jeongeup 580185, Jeonbuk, South Korea
[2] Jeju Natl Univ, Ind Acad Cooperat Fdn, Cheju 690756, South Korea
关键词
Red algae; Enrichment culture; Mixed acids; Fermentation; MESOPHILIC MICROORGANISMS; FERMENTATION; HYDROLYSIS; RESOURCE; CULTURE; SEAWEED;
D O I
10.1016/j.renene.2013.09.050
中图分类号
X [环境科学、安全科学];
学科分类号
08 ; 0830 ;
摘要
The present study investigates the production of mixed acids by anaerobic fermentation using non-pretreated red algae Gelidium amansii as a substrate. The production levels of mixed acids were increased 1.6-fold in enrichment cultures of anaerobic digester sludge and tidal field soil compared with fresh sludge. The enrichment culture was composed of four major groups of microbial strains belonging to Clostridium sp. and Enterococcus sp. A defined mixed culture established based on the identified isolates increased mixed acids production level by up to 50.9% (g/g). Semi-continuous fermentation with a biomass-loading rate of 2.77 g/L/d and hydraulic retention time of 30 days yielded a productivity of 1.41 g/L/d. This is the first report of the production of mixed acids from the red algae G. amansii. (C) 2013 Elsevier Ltd. All rights reserved.
引用
收藏
页码:366 / 369
页数:4
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