Extracción y caracterización de un ácido húmico, y su evaluación fisicoquímica de coagulación en presencia de Fe3+ y Al3+

In this research the extraction of a humic acid (HA) from a soil of Tolcayuca (Hidalgo State) were performed using Na2P2O7.10H2O and NaOH as extracting agents. Physicochemical analysis of studied HAs (commercial CHEPAPEX HA-CH and extracted in the laboratory HA-To) showed polyacid and high chemical stability characteristics, which is corroborated with its ability to coagulate with the trivalent metals through zeta potential values. It was shown that there is a rapid interaction of HA-Metal in less than 5 min and especially when increasing the concentration of the metal (1, 2 and 3 mM) at a pH of 5, due to the deprotonation of carboxylic groups (-COOH) principally, that can coordinate under these conditions, reducing the net negative charge and enabling such complexes, to approach one another and interact through hydrogen bonding.

• Publication year

  2020

• Venue

  Unknown venue

• Publication date

  2020-10-05

• Fields of study

  Not labeled

• Identifiers
  DOI 10.29057/AACTM.V7I7.6204
• External record

  Open on Semantic Scholar

• Source metadata

  Semantic Scholar

• No claims are published for this paper.

• No concepts are published for this paper.

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