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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.
Rubber production in Sri Lanka commenced in 1876, with the planting of 1,919 rubber seedlings at the Henarathgoda Botanical Gardens in Gampaha. [1] The total extent under rubber in 1890 was around 50 ha (120 acres) and in the early 1900s it increased to around 10,000 ha (25,000 acres).
Potassium humate is used in agriculture as a fertilizer additive to increase the efficiency of fertilizers especially nitrogen- and phosphorus-based fertilizer inputs. Other salts of humic acid are manufactured, mainly sodium humate, which is used in animal health supplements. It also can be used in aquaculture.
Humins also produced during the dehydration of sugars, as occurs during the conversion of lignocellulosic biomass to smaller, higher value organic compounds such as 5-hydroxymethylfurfural (HMF).
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Building a CEB project in Midland, Texas in August 2006. A compressed earth block (CEB), also known as a pressed earth block or a compressed soil block, is a building material made primarily from an appropriate mix of fairly dry inorganic subsoil, non-expansive clay, sand, and aggregate.
The Ceylon tree nymph (Idea iasonia) is a species of nymphalid butterfly in the subfamily Danainae. It is endemic to Sri Lanka. First described by John Westwood in 1848, the Ceylon tree nymph can be found in both wet and dry zones of Sri Lanka. It is the largest member of the family Danaidae in that country.
Ritzbury originally started in 1991 as number four in Sri Lanka's chocolate market. By 2006 it had beaten Kandos (Ceylon Chocolates) to the number two spot, with a 21% market share [8] (although still behind, market leader, Edna Group's 42% share). In 2010 it had become Sri Lanka's number one chocolate producer, [14] with a 47.2% market share. [15]