Browse

The problem of intense water pollution by nitrogen and phosphorus compounds is very significant in the 21st century. The pollution is caused by the widespread application of traditional fertilizers in the cultivation of agricultural crops. Nowadays, the research is carried out and the compositions of fertilizers similar in structure with glassy phosphate materials are developed. Inorganic materials, such as carbon fibers, graphite [1], porous glass, silica gel, are widely used for soil, wastewater and air purifica...

Apatite is mineral - common name for a number of related minerals of the apatite group with the common formula Ca5(PO4)3(F, OH, Cl). Mmineral species in the group are fluorapatite (F - up to 3.8), chlorapatite (Cl - up to 6.8), hydroxylapatite, carbonate-apatite. Kola apatite concentrate is a promising and raw material for complex processing, allowing to produce, in addition to the basic product пїЅ phosphoric fertilizers, strontium, rare earth elements and fluorine compounds. Despite obvious environmental expedie...

Chlorine disinfection is a generally used process for eradication pathogenic microorganisms from drinking water to prevent water-born diseases. It has been demonstrated that natural organic matter (NOM) in raw water may react with chlorine to form disinfection by-products (DBPs) which are carcinogenic or mutagenic. The occurrence of disinfection by-products (DBPs) in drinking water has been an issue of major concem during the last years due to their adverse health effects. The development and optimization of analy...