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Evaluación de materiales bioadsorbentes modificados térmicamente en la remoción de nutrientes presentes en aguas residuales municipales de la ciudad de Barranquilla

Díaz Tequia, Angy Lorena; Rodelo Chamorro, Elena Patricia (Universidad de la CostaIngeniería Ambiental, 2019)

In the present work clamshells (Polymesoda sp.), oyster shells (Crassostrea rhizophorae) and coral rock (Coquina) were evaluated as bioadsorbent materials for the removal of nutrients presents in municipal wastewater. The ...
Remoción de colorantes en aguas residuales de la industria textil por medio de material bioadsorbente proveniente de concha de ostras

Coronado Herrera, Carolanne; Rhenals Navarro, Jean Carlos (Corporación Universidad de la CostaCivil y AmbientalBarranquilla, ColombiaIngeniería Ambiental, 2022)

In the present work, the evaluation of a material from oyster shells called coral rock was carried out: (Coquina), as a bioadsorbent for the removal of dye in wastewater from the textile industry. Said material was taken ...

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Evaluación de materiales bioadsorbentes modificados térmicamente en la remoción de nutrientes presentes en aguas residuales municipales de la ciudad de Barranquilla
...
Díaz Tequia, Angy Lorena | 2019

In the present work clamshells (Polymesoda sp.), oyster shells (Crassostrea rhizophorae) and coral rock (Coquina) were evaluated as bioadsorbent materials for the removal of nutrients presents in municipal wastewater. The bioadsorbents were brought to sizes of 1.18 and 2.36 mm, thermally modified at temperatures between 120 and 1000°C, and their textural and elementals properties were analyzed by different characterization techniques, in which they presented macroporous characteristics, as main compound CaCO3, as well as decomposition at temperatures higher than 600°C in CaO and CO2. Mounts were made at laboratory scale using 0.3 L of wastewater and each material in concentrations of 8 and 12 g/L, under continuous agitation. It was obtained as the best material the modified coquina at 400°C in a concentration of 8 g/L, with removal percentages higher than 30% in PO4, P and NO3, and 11% in NO2 and SO4. These conditions were used on a pilot scale in a Batch reactor, obtaining removal percentages higher than 45% in NO3, 24% in PO4, P and NO2, and 12% in SO4 in the 5 hour measurement. Additionally, the material from the reactor was reused after being treated at 120°C and a higher than 90% removal was found in PO4 and P. The results allowed to conclude that the modified coquina at 400°C is viable for the removal of nutrients, in a tertiary treatment system coupled to a Batch reactor with a fixed bed.

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Remoción de colorantes en aguas residuales de la industria textil por medio de material bioadsorbente proveniente de concha de ostras
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Coronado Herrera, Carolanne | 2022

In the present work, the evaluation of a material from oyster shells called coral rock was carried out: (Coquina), as a bioadsorbent for the removal of dye in wastewater from the textile industry. Said material was taken to different particle diameters (300 um and less than 300 um) and subsequently thermally modified using drying at 120°C and calcination at temperatures between 200°C and 800°C, to later be analyzed through different characterization techniques. To evaluate the removal capacity, as well as the adsorption kinetics of the bioadsorbent, mountings were made in the laboratory using the brilliant green dye. For the above, dye concentrations of 25, 50 and 75 mg/L, pH between 2 and 12 and doses of bioadsorbent material between 0.2 and 0.6 g/L, with constant agitation, were evaluated. Aliquots were taken from each experiment at different time intervals to which absorbance measurement was performed at a wavelength of 640 nm for the subsequent determination of the dye concentration at each instant of time and determination of the percentage and capacity of removal. Subsequently, a sweep was carried out through various types of kinetic models in order to select the one that presented a better fit to the experimental results, the Pseudo second order model being selected. Finally, the coquina rock was selected as the best material at a temperature of 120ºC and with a diameter greater than 300 um, with which a removal percentage of 90% was obtained in a given time between 15 and 20 minutes at pH 7. The above allows to conclude that coquina rock is a viable and easily accessible bioadsorbent material for dye removal in textile wastewater.

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Browsing by Subject "Coquina rock"

Evaluación de materiales bioadsorbentes modificados térmicamente en la remoción de nutrientes presentes en aguas residuales municipales de la ciudad de Barranquilla ﻿

Remoción de colorantes en aguas residuales de la industria textil por medio de material bioadsorbente proveniente de concha de ostras ﻿

Envíos recientes

Evaluación de materiales bioadsorbentes modificados térmicamente en la remoción de nutrientes presentes en aguas residuales municipales de la ciudad de Barranquilla

Remoción de colorantes en aguas residuales de la industria textil por medio de material bioadsorbente proveniente de concha de ostras

Evaluación de materiales bioadsorbentes modificados térmicamente en la remoción de nutrientes presentes en aguas residuales municipales de la ciudad de Barranquilla

Remoción de colorantes en aguas residuales de la industria textil por medio de material bioadsorbente proveniente de concha de ostras