Evaluación espectroscópica del proceso de coagulación de los ácido húmicos en presencia de Fe3+

Ana Lidia Arriaga-Trejo; Elizabeth Contreras-López; Luis Guillermo González-Olivares; Araceli Castañeda-Ovando; Silvia Nieto-Velázquez

doi:10.29057/icbi.v11iEspecial.10230

Ana Lidia Arriaga-Trejo Universidad Autónoma del Estado de Hidalgo https://orcid.org/0009-0000-3766-2241
Elizabeth Contreras-López Universidad Autónoma del Estado de Hidalgo https://orcid.org/0000-0002-9678-1264
Luis Guillermo González-Olivares Universidad Autónoma del Estado de Hidalgo https://orcid.org/0000-0002-4707-8935
Araceli Castañeda-Ovando Universidad Autónoma del Estado de Hidalgo https://orcid.org/0000-0003-0759-3198
Silvia Nieto-Velázquez Universidad Autónoma del Estado de Hidalgo https://orcid.org/0000-0003-4728-2087

DOI: https://doi.org/10.29057/icbi.v11iEspecial.10230

Keywords: humic acids, iron interaction, coagulation, humic, acids, iron

Abstract

Humic acids (HAs) are the main and most abundant components of organic matter (OM), they were evaluated by spectroscopic parameters, after a process of agglomeration, coagulation and microfiltration in the presence of iron (Fe³⁺) as a coagulant agent and by means of quantification with the calibration method. Additionally, the behavior of humic macromolecule in presence of metal was analyzed physicochemically and adjusting the pH to 5 to favour the deprotonation of the carboxylic groups (- COOH), stabilizing the negative charges with a minimum but effective Fe³⁺salt (3 mM) concentration. Managing to eliminate an average of 96% the HA as OM in solution. The kinetics of HA-Fe interaction process were very short, less than 5 min. The spectra show a great similarity in relation to the absorbances, however, it is recommended to carry out the microfiltration in the first 30 min of reaction.

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Author Biographies

Ana Lidia Arriaga-Trejo, Universidad Autónoma del Estado de Hidalgo

Humic acids (HAs) are the main and most abundant components of organic matter (OM), they were evaluated by spectroscopic parameters, after a process of agglomeration, coagulation and microfiltration in the presence of iron (Fe³⁺) as a coagulant agent and by means of quantification with the calibration method. Additionally, the behavior of humic macromolecule in presence of metal was analyzed physicochemically and adjusting the pH to 5 to favour the deprotonation of the carboxylic groups (- COOH), stabilizing the negative charges with a minimum but effective Fe³⁺salt (3 mM) concentration. Managing to eliminate an average of 96% the HA as OM in solution.

The kinetics of HA-Fe interaction process were very short, less than 5 min. The spectra show a great similarity in relation to the absorbances, however, it is recommended to carry out the microfiltration in the first 30 min of reaction.

Silvia Nieto-Velázquez, Universidad Autónoma del Estado de Hidalgo

ión.

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