Algae biofilm growth and the potential to stimulate lipid accumulation through nutrient starvation

被引：114

作者：

Schnurr, Peter J. ^{[1
]}

Espie, George S. ^{[2
]}

Allen, D. Grant ^{[1
]}

机构：

[1] Univ Toronto, Dept Chem Engn & Appl Chem, Toronto, ON M5S 3E5, Canada

[2] Univ Toronto, Dept Cell & Syst Biol, Mississauga, ON L5L 1C6, Canada

来源：

BIORESOURCE TECHNOLOGY | 2013年 / 136卷

基金：

加拿大自然科学与工程研究理事会;

关键词：

Biofuels; Algae; Biofilms; Lipids; Nutrients; WASTE-WATER TREATMENT; LIGHT-DARK CYCLES; CYCLOTELLA-CRYPTICA; MICROALGAE; CULTIVATION; BIOFUELS; BIOMASS; PHOTOBIOREACTOR; METABOLISM; SUCCESSION;

D O I：

10.1016/j.biortech.2013.03.036

中图分类号：

S2 [农业工程];

学科分类号：

0828 ;

摘要：

An algae biofilm growth system was developed to study the growth kinetics and neutral lipid productivities of Scenedesmus obliquus and Nitzschia palea, and to determine if algal biofilms can be starved of key nutrients to increase their neutral lipid concentrations. Linear growth curves were determined for each species until nutrient starvation commenced, at which point growth ceased and/or biofilms sloughed from their substratum. Nutrient starvation did not increase neutral lipid concentrations in any of the biofilms; however, it approximately doubled their lipid concentrations when grown in suspension. Biomass productivities of 2.8 and 2.1 g/m(2)/d and lipid productivities of 0.45 and 0.18 g/m(2)/d were determined for N. palea and S. obliquus, respectively. The results suggest that nutrient starvation of biofilms is not a desirable method of lipid production for algae biofilm biofuel production systems, but that lipid production rates compare favorably with conventional terrestrial biofuel sources. (C) 2013 Elsevier Ltd. All rights reserved.

引用

页码：337 / 344

页数：8

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