o:257 Primena metoda hemijske redukcije i koagulacije za prečišćavanje otpadnih voda sa povećanim sadržajem selena i doprinos održivom razvoju Application of chemical reduction and coagulation methods for wastewater treatment with increased selenium content and contribution to sustainable development sr IZVOD: S obzirom na to da održivi razvoj uključuje i ekologiju, u ovom radu je dat pregled procesa: hemijske redukcije nulavalentim gvožđem (ZVI), koagulacije ferihidritom i elektrokoagulacije za uklanjanje selena iz vode i otpadnih voda, kao deo zaštite životne sredine i u cilju prevencije zaraznih bolesti, kao što je sada aktielna pandemija covid 19. Proces katalizovane cementacije sastoji se u uklanjanju teških metala, uključujući i selen (Se), iz rastvora redukcijom do elementarne forme i cementaciju na površini gvožđa. Za uklanjanje selena iz vodenih rastvora koristi se proces zasnovan na koagulaciji ferihidritom, koji EPA, međunarodni standard, preporučuje kao najefikasniju komercijalno dostupnu tehnologiju za tretiranje specifičnih vrsta opasnog otpada (Best Demonstrated Available Technology - BDAT). Hibridni proces, koji se sastoji od elektrokoagulacije i mikrofiltracije ima dobru efikasnost uklanjanja selena procesima adsorpcije/koprecipitacije sa gvožđe-hidroksidom, ali taloženje je otežano zbog stvaranja sitnozrnog taloga. ABSTRACT: Since sustainable development includes ecology, this paper provides an overview of the processes: chemical reductions with zero-valent iron (ZVI), coagulation with ferric hydride and electrocoagulation for the removal of selenium from water and wastewater, as part of environmental protection in order to prevent infectious diseases, such as the current pandemic covid 19. The process of catalyzed cementation consists in the removal of heavy metals, including selenium (Se), from solution by reduction to the elemental form and cementation on the surface of iron. A process based on coagulation with ferric hydride is used to remove selenium from aqueous solutions, which EPA, an international standard, recommends as the most efficient commercially available technology for treating specific types of hazardous waste (Best Demonstrated Available Technology - BDAT). The hybrid process, which consists of electrocoagulation and microfiltration, has good efficiency of selenium removal by adsorption / coprecipitation processes with iron hydroxide, but precipitation is difficult due to the formation of fine-grained sediment. Primlјen: 23. 8. 2021. Prihvaćen: 7. 10. 2021. KLJUČNE REČI: Selen, nula-valentno gvožđe (ZVI), koagulacija, ferihidrit, elektrokoagulacija, zaštita životne sredine KEY WORDS: Selenium, zero-valent iron (ZVI), coagulation, ferric hydrite, electrocoagulation, environmental protection 91552100 51938313 2022-05-12T16:07:38.190Z 44 yes 46 Vesna Marjanović Institut za rudarstvo i metalurgiju Bor ; Mining and Metallurgy Institute Bor Vesna Krstić Institut za rudarstvo i metalurgiju Bor ; Mining and Metallurgy Institute Bor ; Univerzitet u Beogradu, Tehnički fakultet u Boru ; University of Belgrade, Technical Faculty Bor person Violeta Jovanović Fakultet za menadžment Zaječar person application/pdf 775906 https://unilib.phaidrabg.rs/o:257 no yes 1 70 92000004 71A03 ISNRM 2021 11. međunarodni simpozijum o upravljanju prirodnim resursima 177 181 2021