Listar Ambiente y Vida - GIAV por fecha de publicación
Mostrando ítems 41-60 de 123
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Lipids production from Scenedesmus obliquus through carbon/nitrogen ratio optimization
(Journal of Physics: Conference Series, 2019)Microalgae are one of the most promising sources of raw material for biofuel production and derivatives since its high yield of biomass and metabolites possess a low environmental impact. However, its implementation on ... -
Effect of flocculation on lipid extraction from Chlorella Vulgaris UTEX 1803 using response surface methodology
(Journal of Engineering Science and TechnologyMalasia, 2019-02)Microalgae are an attractive source of metabolites, such as lipids, proteins, pigments and carbohydrates, of potential interest to the pharmaceutical, food and energy sectors. The aim of this study was to evaluate the ... -
Vinasse as a Sustainable Medium for the Production of Chlorella vulgaris UTEX 1803
(WaterSuiza, 2019-07-24)This study investigates distillery wastewater, commonly known as vinasse, as a potential culture medium for the production of Chlorella vulgaris and its most relevant metabolites. The effect of vinasse concentration on the ... -
Impact of soil use on aggregate stability and its relationship with soil organic carbon at two different altitudes in the Colombian Andes
(Agronomía ColombianaColombia, 2019-09-01)The stability of soil aggregates depends on the organic matter, and the soil use and management can affect the soil organic matter (SOM) content. Therefore, it is necessary to know the relationship between aggregate ... -
Towards the production of microalgae biofuels: the effect of the culture medium on lipid deposition
(BioTechnologiaPolonia, 2019-09-26)Microalgae have been studied in recent years for various reasons, one among them being their potential in the production of biofuels. Biofuels are considered as a renewable source that does not compete with the food industry, ... -
Optimization of Enzyme-Assisted Extraction of Flavonoids from Corn Husks
(ProcessesSuiza, 2019-11-03)Corn husks are an important byproduct of the corn processing industry. Although they are a rich source of bioactive compounds, especially flavonoids, corn husks are usually disposed of or used as animal feed. In this paper, ... -
Computer-aided environmental and exergy analyses of a large-scale production of chitosan microbeads modified with TiO2 nanoparticles
(Journal of Cleaner ProductionReino Unido, 2019-11-10)Chitosan is a biopolymer that has emerged as a useful material with applications in sectors such as medicine, food industry, water treatment systems, among others. This biomaterial is synthesized from shrimp exoskeleton, ... -
Evaluation of cytotoxic potential of chlorpyrifos using Lens culinaris Med as efficient bioindicator
(Ecotoxicology and Environmental SafetyEstados Unidos, 2019-11-15)The aim of this study was to evaluate the cytotoxic effect of different concentrations of chlorpyrifos (CPF), using L. culinaris apical cells as a biological indicator. L. culinaris seeds were exposed to different ... -
Effect of de Carbon/Nitrogen ratio on the production of microalgae-based carotenoids
(Revista Ingeniería Y CompetitividadColombia, 2020-01-03)This study investigates the effect of C/N ratio on the production of biomass and total carotenoids on a Scenedesmus sp. Initially, three different carbon sources (sodium carbonate, sodium bicarbonate and sodium acetate) ... -
Coupling of heterogeneous photocatalysis and aerobic biological process of activated sludge to treat wastewater containing Chlorpyrifos
(Revista Ingeniería Y CompetitividadColombia, 2020-01-03)Chlorpyrifos is one of the most commonly used pesticides in Colombia, being the most commonly used in the department of Norte de Santander, where its usefulness has been proven to protect crops of rice, coffee, etc. However, ... -
Applicability of a modified breakage and coalescence model based on the complete turbulence spectrum concept for CFD simulation of gas-liquid mass transfer in a stirred tank reactor
(Chemical Engineering ScienceAustralia, 2020-01-16)A generalized model for bubble breakage and coalescence is proposed using Computational Fluid Dynamics – CFD for considering the complete energy spectrum. An eulerian model and balance equations are simultaneously used to ... -
Evaluation of the cytotoxic potential of sodium hypochlorite using meristematic root cells of Lens culinaris Med
(Science of The Total EnvironmentPaíses Bajos, 2020-01-20)The present investigation was designed to monitor the cytotoxic potential of Sodium Hypochlorite using lentil (Lens culinaris) as a bioindicator of toxicity. Sodium hypochlorite (NaClO), is a chemical compound that is used ... -
Cytogenotoxic effect of propanil using the Lens culinaris Med and Allium cepa L test
(ChemosphereReino Unido, 2020-02-12)Propanil can produce methemoglobinemia, hemolytic anemia, hepatotoxicity, metabolic disorder and nephrotoxicity. It also has a genotoxic effect, although it is not listed as a carcinogen and it continues to be applied ... -
Pre-treatments effect on the tetrazolium test on Epidendrum barbaricum Hágsater & Dodson seeds
(Acta AgronómicaColombia, 2020-03-17)Orchids are affected by several factors that impair their spreading, which is necessary to know the viability of their seeds. The aim of this research was to determine the most suitable preconditioning treatment to potentiate ... -
Improvement of the methodology of the tetrazolium test using different pretreatments in seeds of the genus Epidendrum (Orchidaceae)
(Journal of Seed ScienceBrasil, 2020-04-03)The aim of the present study was to determine the most suitable pretreatment to enhance the tetrazolium test in seeds of the Epidendrum genus. Initially, mature capsules were harvested at El Escorial village, in the ... -
Optimization of the tetrazolium test in three species of orchids of the Andean forest
(Australian Journal of Crop ScienceAustralia, 2020-05)In order to improve the cultivation and conservation of orchid species, it is important to assess the physiological quality of orchid seeds. One of the most traditional tests for analysing seed quality is the tetrazolium ... -
Molecular characterization of mandarins (Citrus reticulata Blanco) using ISSR markers
(Sociedad Colombiana de Ciencias Hortícolas (SCCH)Colombia, 2020-05-01)In order to establish the molecular diversity of citrus production systems in Villa Sucre (Colombia), mainly “Creole mandarin”, this study analyzed C. reticulata farm samples using six ISSR molecular markers. A total of ... -
Enzymatic Transesterification of Waste Frying Oil from Local Restaurants in East Colombia Using a Combined Lipase System
(Applied SciencesSuiza, 2020-05-21)The search for innovation and biotechnological strategies in the biodiesel production chain have become a topic of interest for scientific community owing the importance of renewable energy sources. This work aimed to ... -
Alternative for the Treatment of Leachates Generated in a Landfll of Norte de Santander–Colombia, by Means of the Coupling of a Photocatalytic and Biological Aerobic Process
(Topics in CatalysisLuxemburgo, 2020-05-28)In the present study, the use of heterogeneous photocatalysis TiO2/UV coupled to an activated sludge reactor was evaluated as an alternative treatment for the leachate coming from a Landfll, located in Cucuta (Colombia). ... -
Treatment of Agricultural Wastewater with Chlorpyrifos by Coupling of Heterogeneous Photocatalysis and Anaerobic Biological Process
(Topics in CatalysisLuxemburgo, 2020-05-29)Treatment of wastewater with Chlorpyrifos content using heterogeneous photocatalysis was evaluated, for which a compound parabolic collector (CPC) was used, under diferent combinations of pH and TiO2 concentration designed ...