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Title: Stability and Sustainability of Algal Mass Culture.


Abstract not provided.

Publication Date:
Research Org.:
Sandia National Lab. (SNL-CA), Livermore, CA (United States)
Sponsoring Org.:
USDOE National Nuclear Security Administration (NNSA)
OSTI Identifier:
Report Number(s):
DOE Contract Number:
Resource Type:
Resource Relation:
Conference: Proposed for presentation at the SFA Kickoff held February 10, 2015 in Livermore, CA.
Country of Publication:
United States

Citation Formats

Lane, Todd, and Geng, Haifeng. Stability and Sustainability of Algal Mass Culture.. United States: N. p., 2015. Web.
Lane, Todd, & Geng, Haifeng. Stability and Sustainability of Algal Mass Culture.. United States.
Lane, Todd, and Geng, Haifeng. 2015. "Stability and Sustainability of Algal Mass Culture.". United States. doi:.
title = {Stability and Sustainability of Algal Mass Culture.},
author = {Lane, Todd and Geng, Haifeng},
abstractNote = {Abstract not provided.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = 2015,
month = 2

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  • The carbon limited kinetic responses of various fast growing algal species have been summarized. These results suggest that the growth responses of many algae used in mass culture may best be represented as a Monod fit of the specific growth rate ( to the free carbon dioxide concentration (CO/sub 2//sub f/). The environmental modifiers of primary importance appear to be light levels, temperature and the ionic strength of the growth media. The various mathematical models describing the algal biological response to limitng CO/sub 2//sub f/ concentration, the carbonate equilibrium chemistry and the physical configration of a flow-through microbial culture aremore » combined to yield equations which predict the pH, total carbon concentration (C/sub T/) and algal cell concentration of a continuous alga culture, given a max/ and K/sub SCO2/ for the alga of interest. This model is further used to illustrate the under-utilization of inorganic carbon in mass algal cultures in which the pH is uncontrolled. One method of pH control in such cultures involves the utilization of CO/sub 2/ supply from bacterial degradation of waste organics in the influent culture medium. In such a situation both the culture pH and algal cell production will often be governed by either carbon or light limitation depending primarily on the influent BOD loading, detention time and culture depth. In spite of the obvious over-simplification of considering only light and carbon limits in describing the behavior of mass algal culture, comparisons to actual field data suggest that these two parameters will be of paramount importance in controlling net algal cell production rates.« less
  • Abstract not provided.
  • The applicability of large-scale algal culture was examined to alleviate food-protein shortages, fossil fuel price increases, pollution of waters, soils, and the atmosphere by direct and indirect human activities. The main effort was to examine the potential use of microalgae as a source of lipids. It was concluded that: (1) algal mass culture may be economically competitive with other land uses in hot arid lands; (2) algae can be grown on human and animal wastes as nutrient sources, or on mixtures of such wastes with seawater; (3) the integration of algal mass cultures with municipal and agricultural treatment installations andmore » with industrial plants favorably affects the economics, energetics, and environmental impact of such systems; (4) algal culture systems can be designed to flexibly adapt to maximize biomass, lipid, or effluent production, in response to changing needs; (5) present market values favor the use of algae for animal feed supplement, after being first extracted for their lipids and (6) in arid lands, the effluent obtained from sewage, after algal separation, may prove as valuable as the algae themselves. 1 figure, 10 tables.« less
  • Instantaneous growth rate of a stock strain of Selenastrum capricornutum was reduced by 47% when grown on modified Bold`s Basic medium solidified with 1.5% agar (w/v) and spiked with an additional 1.0 mg/L of Cu++ (w/v, CuSO{sub 4}), Clonal strains artificially selected on spiked media showed no growth rate reduction under these conditions, and exhibited 27--113% increases in growth rate on un-spiked medium. Results suggested copper tolerance and superior growth on solidified medium are linked traits, and selection for rapid growth on solidified medium also selects for metal tolerance. Preliminary selection experiments confirmed this hypothesis. Standard laboratory procedures for producingmore » axenic strains and clonal strains tend to inadvertently select for metal-tolerant algae and may be important to consider in extrapolating laboratory results to field populations.« less
  • Abstract not provided.