1、How to Perform Solvent Treatment on Organic Humic Acid

We examined the solubility of humic acid in many organic solvents, and found that some humic acids had the property to dissolve con siderably in acetone and benzene-alcohol mix ture and give the solution a dark brownish color.

2、Degradative catalyst solvent extraction and oxidative cracking in humic

It promotes the cross-linking condensation of humic acid molecules into larger molecular weight, insoluble components, ultimately resulting in decreased humic acid yield.

3、FRACTIONATION OF HUMIC ACID BY ORGANIC SOLVENTS

We examined the solubility of humic acid in many organic solvents, and found that some humic acids had the property to dissolve con siderably in acetone and benzene-alcohol mix ture and give the solution a dark brownish color.

The Role of Concentration and Solvent Character in the Molecular

The molecular organization of humic acids in different aqueous solutions was studied over a wide concentration range (0.01–10 g·dm−3). Solutions of humic acids were prepared in three different media: NaOH, NaCl, and NaOH neutralized by HCl after ...

Treatment of humic acid wastewater by catalytic oxidation process

To investigate humic acid degradation, Among the elements that are often found in water is humic acid. The conventional techniques developed for removing humic acid from water are flocculation, biological treatment, filtration, and oxidation.

Sorption of Organic Pollutants by Humic Acids: A Review

Papers about the interaction between organic pollutants and humic acids dissolved in solution, in the solid state and adsorbed onto solid particles, like aluminosilicates and magnetic materials, are reviewed and discussed.

Electrochemical treatment of humic acid using particle electrodes

In order to degrade the macromolecular pollutant of humic acid, the powder ordered mesoporous carbon (POMC, average pore diameter 4.29 nm) was first applied for preparing the granular OMC (GOMC, Φ × H = 4 × 3-6 mm) as electrodes in a continuous three-dimensional (3D) electrochemical system.

Humic Acid: A Promising and Green Bioorganic Catalyst in Organic

Herein we report the comprehensive analysis on the role of HA in organic transformations providing diverse array of molecular scaffolds till date and future perspective.

Advancing humic acids extraction procedures: A review of methods

Humic acid has applications in agriculture, water treatment, and many industries. This paper provides a review of various methods for extracting humic acids from coal, focusing on their efficiency, and environmental challenges.

(PDF) Humic Acid: A Promising and Green Bioorganic Catalyst in Organic

This method offers a mild, efficient, and environmentally friendly approach with broad functional group tolerance, highlighting the potential of humic acid as a practical catalyst in green...

Organic humic acid is a natural macromolecular compound widely found in soil, water bodies, and living organisms. It offers various functions, such as improving soil structure, enhancing fertilizer efficiency, and regulating pH levels. Solvent treatment of organic humic acid aims to extract its active components and elevate its application value. The following are the detailed steps:

1. Raw Material Preparation: Sufficient organic humic acid raw materials, such as soil, animal/plant residues, or other organic matter, must be prepared. Ensure the quality and purity of the raw materials to obtain high-quality products.

2. Pretreatment: Preprocess the organic humic acid through crushing, grinding, and sieving to facilitate subsequent extraction.

3. Extraction: Mix the pretreated organic humic acid with an appropriate amount of water and heat to a specific temperature (typically between 60–80°C) to dissolve the active components into the water. This process is called extraction.

4. Separation: Remove insoluble impurities and excess water from the extracted product using methods like centrifugation, filtration, or precipitation.

5. Purification: Further purify the extract through evaporation, crystallization, or adsorption to increase the concentration and purity of active components.

6. Drying: Dry the purified organic humic acid to remove residual moisture. Common drying methods include spray drying or freeze drying.

7. Packaging: Package the dried organic humic acid for storage and use.

Key Considerations:

1. Temperature Control: The extraction temperature significantly impacts the release of active components. Extreme temperatures may cause loss of efficacy, so precise temperature regulation is critical.

2. Time Management: Excessive extraction time may lead to overloss of active components, while insufficient time may result in incomplete extraction. Adjust duration based on specific conditions.

3. Separation and Purification: Choose appropriate equipment and methods to ensure effective separation and purification of active components.

4. Drying: Maintain optimal temperature and humidity during drying to prevent degradation of active components.

5. Packaging: Ensure airtight and moisture-proof packaging to preserve product quality.

following these steps enables efficient extraction and purification of organic humic acid, yielding high-quality products. These products hold significant economic and social value in agriculture, forestry, environmental protection, and other fields.