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Biodegradation of wastewater pollutants by activated sludge coimmobilized with Scenedesmus obliquus Agrociencia
Ruiz-Marin,Alejandro; Canedo-Lopez,Yunuen; Campos-Garcia,Silvia del C.; Sabido-Perez,Mirna Y.; Zavala-Loria,José del C..
Wastewater treatment plants produce large quantities of biomass (sludge) that require about one-third of the total investment and plant operation costs for their treatment. With microbial immobilization and coimmobilization with microalgae, it is possible to handle high cell concentration in the column reactor and increase its efficiency. The experimental design consisted in immobilized and coimmobilized S. obliquus with activated sludge in alginate beads cultured under continuous light or photoperiods (12 h/12 h) in artificial wastewater medium to evaluate the growth, nutrients and biochemical oxygen demand (BOD) removal. The results showed that the microalgae S. obliquus immobilized and coimmobilized in cultures under continuous light had higher growth...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Activated sludge; Coimmobilization; Growth; Scenedesmus obliquus; Nitrogen and organic matter removal.
Ano: 2013 URL: http://www.scielo.org.mx/scielo.php?script=sci_arttext&pid=S1405-31952013000500002
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Production of ethanol by Saccharomyces cerevisiae and Zymomonas mobilis Coimmobilized: proposal for the use of organic waste Agrociencia
Ruiz-Marín,Alejandro; Canedo-López,Yunuén; Narváez-García,Asteria; Robles-Heredia,J. Carlos.
Abstract: Fermentation technologies were developed to improve the production of ethanol and an alternative is the immobilization technology, which offers advantages in comparison with free cells culture, such as the possibility of efficiently incorporating symbiotic bacteria in the same matrix. The aim of this study was to evaluate, in equivalent medium, the use of mango (Mangifera indica) waste to produce ethanol. The study compared the production of ethanol by using Zymomonas mobilis and Saccharomyces cerevisiae in free cells culture, immobilized and coimmobilized in calcium alginate in a culture medium equivalent to mango juice. It also included an evaluation of the effect of glucose concentration on productivity in a coimmobilized system. The...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Mangifera indica; Immobilization; Coimmobilization; Ethanol; Zymomonas mobilis; Saccharomyces cerevisiae.
Ano: 2016 URL: http://www.scielo.org.mx/scielo.php?script=sci_arttext&pid=S1405-31952016000500551
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