Tabiiy fanlar

HEAVY METALS AS A FACTOR OF ENVIRONMENTAL POLLUTION

heavy metals; water pollution; biosorption; phytoremediation; macrophytes; maximum permissible concentration; water treatment.

Authors

  • Сабина МУСАКАЕВА Докторант, Джизакский педагогический университет, Джизах, Узбекистан, Uzbekistan
  • Зулайхо СМАНОВА Д.х.н.,профессор, Национальный университет Узбекистана, Ташкент, Узбекистан, Uzbekistan
  • Камила РАШИДОВА Д.х.н., доцент, Джизакский государственный педагогический университет, Джизах, Узбекистан, Uzbekistan
  • Нилуфар УМИРОВА PhD, доцент, преподаватель Гулистанского государственного университета, Гулистан, Узбекистан, Uzbekistan

The article addresses the problem of natural water contamination by heavy metals as one of the most hazardous factors of
anthropogenic impact on the environment. The main sources of heavy metal input into aquatic ecosystems, their classification,
physicochemical forms, and migration patterns in the hydrosphere are analyzed. Regulatory standards for maximum permissible
concentrations (MPC) in different categories of water use are discussed. Special attention is given to biological water treatment
methods, including biosorption and phytoremediation. The effectiveness of higher aquatic plants and microorganisms in removing
manganese, lead, chromium, iron, and strontium ions is substantiated. The перспективность использования combined
biosorption–phytoremediation technologies for the treatment of natural and wastewater is demonstrated.