Ads
related to: humic acid and lignite
Search results
Results From The WOW.Com Content Network
It is reducible to a fine powder by trituration, and if submitted to the action of a weak solution of potash, it yields a considerable quantity of humic acid. [39] Leonardite is an oxidized form of lignite, which also contains high levels of humic acid. [58] Jet is a hardened, gem-like form of lignite used in various types of jewelry. [42]
It is an oxidation product of lignite, associated with near-surface mining. [1] It is a rich source of humic acid (up to 90%) [2] and is used as a soil conditioner, as a stabilizer for ion-exchange resins in water treatment, [3] in the remediation of polluted environments and as a drilling additive. [4]
Extracted humic acid not a single acid; rather, it is a complex mixture of many different acids containing carboxyl and phenolate groups so that the mixture behaves functionally as a dibasic acid or, occasionally, as a tribasic acid. Commercial humic acid used to amend soil is manufactured using these same well established procedures.
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 ...
A relatively high altitude formation, Maddingley brown coal is distinguished as having 60% moisture content and a rich fulvic acid and humic acid content. [2] A declared strategic State mining reserve, the estimated 400 million tonne deposit at Maddingley is the largest of three known deposits of high value Leonardite in the world, the others ...
Geiseltal open-cast mining area, mapped at the 2 m thickness limit of the lignite. The Geiseltal, a peripheral area of the Central German Lignite Mining Area, is located about 20 km south of Halle (Saale) and about 10 km southwest of Merseburg in Saxony-Anhalt. It extends over a length of 15 km from west-northwest to east-southeast and over a ...