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"Humic substances" is an umbrella term covering humic acid, fulvic acid and humin, which differ in solubility. By definition, humic acid (HA) is soluble in water at neutral and alkaline pH, but insoluble at acidic pH < 2. Fulvic acid (FA) is soluble in water at any pH. Humin is not soluble in water at any pH.
Heat is used to increase the solubility of humic acids and hence more potassium humate can be extracted. The resulting liquid is dried to produce the amorphous crystalline like product which can then be added as a granule to fertilizer. The potassium humate granules by way of chemical extraction lose their hydrophobic properties and are now ...
Fulvic acid is the genus that contains the matter that has the lowest molecular weight, is soluble in acids and alkalis, and is susceptible to microbial action. Humic acid is the genus that contains the intermediate matter that has medial molecular weight, is soluble in alkalis and insoluble in acids, and has some resistance to microbial action.
Fulvic acid has been used historically in ayurveda. [3] It is the active component in shilajit, which is traditionally consumed by people from Nepal and northern India. [4] The concept of black water was first created by a Canadian family around 2008. The drink was concocted as a mix of fulvic acid with spring water to be taken as a health ...
The International Humic Substances Society maintains a collection of standard and reference samples of humic and fulvic acids extracted and fractionated from leonardite, river water, a mineral soil, and peat, plus natural organic matter isolated from river water by reverse osmosis, [4] without fractionation. [5]
Shilajit or mumijo, Mohave lava tube, 2018. Shilajit (Sanskrit: शिलाजीत; lit. ' conqueror of mountain ', 'conqueror of the rocks'), salajeet (Urdu: سلاجیت), mumijo or mumlayi or mumie [1] is an organic-mineral product of predominantly biological origin, formed at high altitudes of stony mountains, in sheltered crevices and cave.
Decomposition of dead plant material causes complex organic compounds to be slowly oxidized (lignin-like humus) or to decompose into simpler forms (sugars and amino sugars, and aliphatic and phenolic organic acids), which are further transformed into microbial biomass (microbial humus) or reorganized and further oxidized into humic assemblages ...
Humic and fulvic acid are fractions of natural organic matter (NOM). They are defined operationally. The humic acids precipitate from solution at pH < 2. Likewise, the fulvic acids remain in solution. Both are complex mixtures of many organic compounds. Most aquatic NOM is fulvic acid, while a greater fraction of soil NOM (SOM) is humic acid.
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