1995
DOI: 10.1007/bf00003556
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A comparative study of four systems for tertiary wastewater treatment by Scenedesmus bicellularis: New technology for immobilization

Abstract: Immobilization appears to be one of the best techniques to separate physically micro-algal cells from their culture medium for the purpose of algal tertiary wastewater treatment. High operation costs and other drawbacks of largescale physico-chemical methods of harvest led to a comparative study of biotreatment systems. Before treatment began, Scenedesmus bicellularis cells were conditioned (starved) under four different sets of conditions: 1) nonimmobilized cells with air bubbling (NCA); 2) cells immobilized … Show more

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Cited by 47 publications
(12 citation statements)
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“…The 5 days starvation period had a detrimental and irreversible effect on the population. This resembled the effect of starvation on S. bicellularis [16]. However, the populations of both Chlorella spp.…”
Section: Discussionmentioning
confidence: 59%
See 1 more Smart Citation
“…The 5 days starvation period had a detrimental and irreversible effect on the population. This resembled the effect of starvation on S. bicellularis [16]. However, the populations of both Chlorella spp.…”
Section: Discussionmentioning
confidence: 59%
“…The microbial carrier chosen in these studies were alginate beads. Immobilization of microalgae in polysaccharide gels is an experimental way to use these microorganisms for wastewater treatment [14,15] because it reduces the major difficulty of collecting enormous populations of cells developed during the treatment, which hamper regular microalgae treatments [3,16]. Although the efficiency of removing phosphorus by the co-immobilized microorganisms is increased, it had not reached high values of removal.…”
Section: Introductionmentioning
confidence: 99%
“…Effectiveness in industrial and water bioremediation applications would be improved if these free-moving microorganisms were confined to environments where their activities could be better controlled. Furthermore, where mutual effects are expected, it is essential that the microorganisms are in close proximity, as provided by small alginate spheres (26).…”
Section: Discussionmentioning
confidence: 99%
“…Therefore, there appeared to be no limitation to the microalgae growth for the three species studied. Furthermore, the general tendency for chlorophyll a is to increase as the light availability diminishes (Kaya et al 1995;Lau et al 1997) and increases over time when the culture conditions are favorable (Aguilar-May and Sánchez-Saavedra 2009; FloresPáez 2012). The results obtained show that the rate of production (but not the final amount) of chlorophyll a content in the re-calcified beads decreased in all three microalgae species, as indicated by the slope of the curve of chlorophyll a as a function of time.…”
Section: Discussionmentioning
confidence: 99%