Biolixiviación de metales a partir de residuos de procesos de mecanizado

M. Gómez-Ramírez, A. M. Rivas-Castillo, F. Moreno-Villanueva, N. G. Rojas-Avelizapa

Resultado de la investigación: Contribución a una revistaArtículorevisión exhaustiva

Resumen

The present study evaluates the ability of Acidithiobacillus thiooxidans DSM 26636 to grow and leach metals from industrial wastes (IW) containing245 differentModeladometalde la compositions,biodegradacióncodeden biorreactoresas IW-steeldeandlodosIW-scrap.de hidrocarburosFor this purpose,totales delbiolixiviationpetróleo was assessed during 21 days at 30°C and 150 rpm, with 1% (w/v) of IW pulp density. Microbial growth was evaluated periodically intemperizados en suelos y sedimentos by measuring sulfate production; pH and sulfuric acid concentration were also monitored, and metal bioleaching was evaluated by ICP-OES. Results showed(Biodegradationthat A. thiooxidansmodeling sulfur-oxidizingof sludge bioreactorsactivityof totalwaspetroleumhigher inhydrocarbonsthe presenceweatheringof IW-steel.in soilSpecifically, sulfates and sulfuric acid concentrations in IW-steel corresponded to 21,522 ± 1,059 mg/L and 0.0988 ± 0.0030 M at day 21, and sediments) respectively, and a pH diminution from 3.0 to 1.46 ± 0.10 was detected. In the case of IW-scrap, sulfate production only increased to up to 4,392 ± 335 mg/LS.A.onMedina-Moreno,day 21, and no S.pHHuerta-Ochoa,reduction wasC.A.detected.Lucho-Constantino,Besides, metalL. removalAguilera-Vázquez,was differentA. Jiménez-in IW-steel and IW-scrap. The results obtainedGonzálezreinforcey M. Gutiérrez-Rojasthe fact that A. thiooxidans DSM 26636 presents potential to be employed for the bio-treatment of high-metal-content 259 Crecimiento, industrial sobrevivencia residues, y adaptación and that de its Bifidobacterium biolixiviation infantis capability a condiciones strongly depends ácidas on the metal load present in them.

Título traducido de la contribuciónContenido bioleaching of metals from machining process wastes
Idioma originalEspañol
Páginas (desde-hasta)751-759
Número de páginas9
PublicaciónRevista Mexicana de Ingeniera Quimica
Volumen20
N.º2
DOI
EstadoPublicada - 1 may 2021

Palabras clave

  • Acidithiobacillus(Growth
  • Infantisdirect bioleaching
  • Sulfur-oxidizing activity
  • Survivalbioleachingand adaptationof ofindustrialBifidobacteriumwastes
  • Thiooxidans
  • To acidic conditions)metals

Huella

Profundice en los temas de investigación de 'Biolixiviación de metales a partir de residuos de procesos de mecanizado'. En conjunto forman una huella única.

Citar esto