Microalgal-bacterial co-cultivation on novel bio-coated supports: Evaluation of growth performance in submerged and permeated biofilm cultivation system with cost-benefit assessment

被引：0

作者：

Tong, C. Y. ^{[1
,2
]}

Kee, Chai Ying ^{[1
]}

Honda, Kohsuke ^{[2
]}

Derek, C. J. C. ^{[1
]}

机构：

[1] Univ Sains Malaysia, Sch Chem Engn, Engn Campus, Nibong Tebal 14300, Penang, Malaysia

[2] Osaka Univ, Int Ctr Biotechnol, 2-1 Yamada Oka, Suita, Osaka 5650871, Japan

来源：

ALGAL RESEARCH-BIOMASS BIOFUELS AND BIOPRODUCTS | 2024年 / 84卷

关键词：

Biofilm; Cell immobilization; Cost analysis; Organic matter; Production cost; LIPID PRODUCTION; BIOMASS; ADHESION; BIOFUELS; EPS;

D O I：

10.1016/j.algal.2024.103792

中图分类号：

Q81 [生物工程学（生物技术）]; Q93 [微生物学];

学科分类号：

071005 ; 0836 ; 090102 ; 100705 ;

摘要：

In microalgae mass production, co-cultivation with bacteria and biofilm immobilization hold promise, yet challenges persist in biofilm-based cultivation due to weak cohesion under stress. Hence, a novel bio-coating derived from spent medium and cells (extra-/intra-cellular organic matter from Cylindrotheca fusiformis and Escherichia coli) was applied to microporous membrane in submerged and permeated biofilm systems. Results showed a minimum 25 % improvement in biomass productivity (up to 45 g m(-2)) on bio-coated membranes in permeated system. Mucopolysaccharides in bio-coating facilitated biofilm development and encouraged a 10-fold higher AOM yield (defense mechanism against shearing force) in submerged systems, but biomass productivity was 10 times lower than permeated system. In permeated system, cells on IOM-coated membranes exhibited the highest biomass growth and lipid yield, potentially addressing the biomass-lipid trade-off. Permeated system with low operating cost around 69 $ kg(-1) was a viable cultivation approach, presenting an opportunity to optimize microalgae production facilities.

引用

页数：13