Abstract：
: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 2.1g/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.
journal_name
Bioresour Technoljournal_title
Bioresource technologyauthors
Schnurr PJ,Espie GS,Allen DGdoi
10.1016/j.biortech.2013.03.036subject
Has Abstractpub_date
2013-05-01 00:00:00pages
337-44eissn
0960-8524issn
1873-2976pii
S0960-8524(13)00404-5journal_volume
136pub_type
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