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Dive into the research topics where Santiago Cardona is active.

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Featured researches published by Santiago Cardona.


Journal of Environmental Sciences-china | 2015

Evaluation of biostimulation and Tween 80 addition for the bioremediation of long-term DDT-contaminated soil

Bibiana Betancur-Corredor; Nancy J. Pino; Santiago Cardona; Gustavo Peñuela

The bioremediation of a long-term contaminated soil through biostimulation and surfactant addition was evaluated. The concentrations of 1,1,1-trichloro-2,2-bis(4-chlorophenyl) ethane (DDT) and its metabolites 1,1-dichloro-2,2-bis(4-chlorophenyl) ethane (DDD) and 1,1-dichloro-2,2-bis(4-chlorophenyl) ethylene (DDE) were monitored during an 8-week remediation process. Physicochemical characterization of the treated soil was performed before and after the bioremediation process. The isolation and identification of predominant microorganisms during the remediation process were also carried out. The efficiency of detoxification was evaluated after each bioremediation protocol. Humidity and pH and the heterotrophic microorganism count were monitored weekly. The DDT concentration was reduced by 79% after 8 weeks via biostimulation with surfactant addition (B+S) and 94.3% via biostimulation alone (B). Likewise, the concentrations of the metabolites DDE and DDD were reduced to levels below the quantification limits. The microorganisms isolated during bioremediation were identified as Bacillus thuringiensis, Flavobacterium sp., Cuprivadius sp., Variovorax soli, Phenylobacterium sp. and Lysobacter sp., among others. Analysis with scanning electron microscopy (SEM) allowed visualization of the colonization patterns of soil particles. The toxicity of the soil before and after bioremediation was evaluated using Vibrio fischeri as a bioluminescent sensor. A decrease in the toxic potential of the soil was verified by the increase of the concentration/effect relationship EC50 to 26.9% and 27.2% for B+S and B, respectively, compared to 0.4% obtained for the soil before treatment and 2.5% by natural attenuation after 8 weeks of treatment.


Dyna | 2010

TECNOLOGÍAS PARA LA DECOLORACIÓN DE TINTES ÍNDIGO E ÍNDIGO CARMÍN

Luz Quintero; Santiago Cardona


Dyna | 2009

EVALUACIÓN DE LA BIOESTIMULACIÓN FRENTE A LA ATENUACIÓN NATURAL Y LA BIOAUMENTACIÓN EN UN SUELO CONTAMINADO CON UNA MEZCLA DE GASOLINA - DIESEL

Wilmar Gómez; Jair Gaviria; Santiago Cardona


Gestión y Ambiente | 2012

Sistemas de tratamiento para residuos liquidos generados en laboratorios de analisis quimico

Linda Berrio; Oscar Beltrán; Edison Alexander Agudelo; Santiago Cardona


Dyna | 2009

ASSESSMENT OF THE BIOSTIMULATION AGAINST BIOAUGMENTATION AND NATURAL ATTENUATION ON CONTAMINATED SOIL WITH DIESEL-GASOLINE MIXING

Wilmar Gómez; Jair Gaviria; Santiago Cardona


Gestión y Ambiente | 2006

Reutilización y activación del coque de petróleo para remover metales en agua

Santiago Cardona


Archive | 2012

Sistemas de tratamiento para residuos liquidos generados

Linda Berrio; Oscar Beltrán; Edison Alexander Agudelo; Santiago Cardona


Gestión y Ambiente | 2011

Evaluación del tratamiento biológico para remoción de color índigo de agua residual industrial textil por un consorcio microbiano en lecho fluidizado

Luz Quintero; Santiago Cardona


Archive | 2010

BIODEGRADATION PATHWAY PREDICTION OF POPS (PERSISTENT ORGANIC POLLUTANTS) AND BIOBARRIER TREATMENT PREDICCIÓN DE LA RUTA DE BIODEGRADACIÓN DE COPS (CONTAMINANTES ORGÁNICOS PERSISTENTES) Y TRATAMIENTO POR BIOBARRERAS

Santiago Cardona; Edgar Suárez


Archive | 2010

TECHNOLOGIES FOR THE DECOLORIZATION OF DYES

Luz Quintero; Santiago Cardona

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Luz Quintero

National University of Colombia

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Edgar Suárez

National University of Colombia

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Jair Gaviria

National University of Colombia

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Wilmar Gómez

National University of Colombia

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Edison Alexander Agudelo

National University of Colombia

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