Obtención y caracterización de carbón activado obtenido de lodos de plantas de tratamiento de agua residual de una industria avícola

Rojas-Morales, Jorge Luis; Gutiérrez-González, Edixon Cristóbal; Andrade, Gilberto de Jesús Colina

doi:10.1016/j.riit.2016.11.005

Cited by 12 publications

(9 citation statements)

References 2 publications

(1 reference statement)

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“…Indicating an enrichment of this non-soluble compound in the second extraction season. On the other hand, concerning the obtained ash it can be observed that the bands from 3350 cm -1 to 1632 cm -1 disappear and bands appear around 1425 cm -1 with higher intensity associated to the deformation of methyl CH3 and CH2 and the Si-H vibration of the Si-CH3 group [12,13], as well as the appearance of the band near 1024 cm -1 exactly at 1037 cm -1 associated to the silicates [13]. In the second extraction these bands are more intense, it is associated to a higher content of minerals in the water bodies and therefore in the ash obtained in that extraction season, the presence of minerals in the lagoons favors the propagation of emergent macrophytes such as Tule and Water Lily, contributing to the eutrophication of the lagoons.…”

Section: Ftir Analysismentioning

confidence: 89%

Delignification and characterization of Tule (Typha Dominguensis) for its potential use in the production of green concrete.

Romero,

Onofre,

Espíndola

2024

J. Phys.: Conf. Ser.

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In the search to mitigate the ecological footprint originated by the construction industry, the elaboration of green concrete is an alternative. However, it is necessary to study the material and determine if it requires a treatment prior to its incorporation into the concrete mixture. Natural fibers of Typha Dominguensis were extracted and analyzed in winter and summer seasons. A process of de-lignification with H2O2 was carried out to observe transformations in the morphological, chemical and structural properties. It was found that the physicochemical properties vary according to the extraction season even when the extraction site is the same. As an example, the percentage of ash obtained doubled in winter season. By means of an optical microscope an increase in roughness was observed without showing damage to the fibers, as for the chemical and structural properties a considerable decrease in the signals attributed to non-cellulosic material is appreciated. Additionally, the crystallinity is favoured by 13.58%, the humidity and hydrophilicity of the fiber remain similar considering the extraction season, although after de-lignification this percentage tends to decrease. Finally, the research has shown that it is necessary to previously perform a de-lignification process to favour the interaction of Tule as a material that can be incorporated into a new green concrete.

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Section: Ftir Analysismentioning

confidence: 89%

Delignification and characterization of Tule (Typha Dominguensis) for its potential use in the production of green concrete.

Romero,

Onofre,

Espíndola

2024

J. Phys.: Conf. Ser.

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“…The band close to 2900 cm −1 , very strong for the AC-ZnCl 2 and AC-FeCl 3 samples, is associated with stretching vibration of aliphatic C-H bonds, whereas the peak at 2331 cm −1 , observed only in the AC-Fe(NO 3 ) 3 and AC-Fe 2 (SO 4 ) 3 spectra, indicates the presence of ketone functional groups. The band close to 1560 cm −1 corresponds to C=C stretching vibration of the aromatic rings [33]. Thus, the bands associated with alcohols, phenols, esters, acids, and ethers were observed at a wavelength of 1100 cm −1 .…”

Section: Characterization Of the Activated Carbonsmentioning

confidence: 89%

Application of Sludge-Based Activated Carbons for the Effective Adsorption of Neonicotinoid Pesticides

et al. 2021

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The amount of sludge produced in wastewater treatment plants (WWTPs) has increased over the years, and the methods used to reduce this waste, such as incineration, agricultural use, or disposal in landfills, cause problems of secondary pollution. For this reason, it is necessary to find sustainable and low-cost solutions to manage this waste. Additionally, emerging and priority pollutants are attracting attention from the scientific community as they can generate health problems due to inadequate removal in conventional WWTPs. In this work, a pharmaceutical industry sludge was used as a precursor in the synthesis of four activated carbons (ACs) using different activating agents (ZnCl2, FeCl3∙6H2O, Fe(NO3)3∙9H2O, and Fe(SO4)3∙H2O), to be used for the removal by adsorption of three neonicotinoid pesticides included in latest EU Watch List (Decision 2018/840): acetamiprid (ACT), thiamethoxam (THM), and imidacloprid (IMD). The prepared ACs showed micro–mesoporous properties, obtaining relatively slow adsorption kinetics to reach equilibrium, but despite this, high values of adsorption capacity (qe) were obtained. For example, for AC-ZnCl2 (SBET = 558 m2/g), high adsorption capacities of qe = 128.9, 126.8, and 166.1 mg/g for ACT, THM, and IMD, respectively, were found. In most cases, the adsorption isotherms showed a multilayer profile, indicating an important contribution of the mesoporosity of the activated carbons in the adsorption process.

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“…En cuanto al mantenimiento de la planta de tratamiento y de los lodos, se seguirá el protocolo descrito en el Manual de Operación y Mantenimiento de la planta de aguas residuales (Rojas-Morales et al, 2016).Esto implica la limpieza y retiro de los lodos de forma semanal, asegurando que tengan una humedad inferior al 85% para una disposición final óptima y minimizando los impactos ambientales.…”

Section: Coagulador-floculador Sedimentadorunclassified

Evaluación de la calidad de las aguas residuales hospitalarias y diseño de una planta de tratamiento para un Hospital General

Chimbolema

Ponce

Paredes

2023

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El estudio se centró en la evaluación de la calidad del agua residual hospitalaria y el diseño de una planta de tratamiento para un Hospital General. Se analizaron diversas propiedades físicas, químicas y microbiológicas del agua, encontrando que varios parámetros superaron los límites permitidos. Se identificó una carga contaminante significativa que requería medidas de tratamiento y control adecuadas para preservar el medio ambiente. Se propuso un diseño de planta de tratamiento que incluye un sistema de coagulación-floculación y sedimentación para eliminar eficientemente los contaminantes. Se realizaron pruebas de tratabilidad que confirmaron la viabilidad técnica del proyecto y su capacidad para lograr una alta eficiencia en la remoción de contaminantes. Además, se consideró la disposición final de los lodos producidos en la planta y se sugirió su uso como fertilizante agrícola. Los resultados obtenidos demostraron la efectividad del tratamiento en la mejora de la calidad del agua residual y su impacto positivo en el medio ambiente.

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Obtención y caracterización de carbón activado obtenido de lodos de plantas de tratamiento de agua residual de una industria avícola

Cited by 12 publications

References 2 publications

Delignification and characterization of Tule (Typha Dominguensis) for its potential use in the production of green concrete.

Delignification and characterization of Tule (Typha Dominguensis) for its potential use in the production of green concrete.

Application of Sludge-Based Activated Carbons for the Effective Adsorption of Neonicotinoid Pesticides

Evaluación de la calidad de las aguas residuales hospitalarias y diseño de una planta de tratamiento para un Hospital General

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