Year: 1983
Type: article
Abstract: The effects of A1(OH)2.2Clo.8 and CaSO, on flocculation and permeability of smectite clays were studied by a flocculation test and permeability and viscosity measurements.As compared on the molar basis, AI(OH)2.2Clo.8 and CaSO, were not much different in the flocculating power and the enhancement of the permeability for a silt and clay fraction separated from a heavy-textured paddy soil.The permeability of the silt and clay was increased by mixing the suspended silt and clay with the reagent solution, but not by leaching the sedimented silt and clay with the same solution.The addition of these reagents in an amount of 3 to 6 mmol/100 g of the silt and clay (CEC=37.5 meq), which was greater than that necessary for the flocculation, increased its permeability by three to six times.The viscosities of suspensions of smectite (bentonite) to which CaSO, or A1(OH)2.2Clo.8 was added indicated quick and slow flocculation by both the reagents and partly irreversible flocculation by A1(OH)2.2Clo.8.
Source: Soil Science & Plant Nutrition
Institution: Kyushu University
Language: English
Subfield: Water Science and Technology
Field: Environmental Science
Domain: Physical Sciences
Open Access status: bronze
OpenAlex ID: W2003663582