Sulfate reduction can be used in a large number of environmental technologies. Methanogenic bioreactors treating organic wastewater containing sulfate can be negatively affected by the sulfide produced; however, it is possible to combine methanogenesis and sulfate reduction when adequate measures are applied. For the treatment of inorganic wastewaters containing sulfate, organic substrates or H-2/CO2 are added as electron donors. Alternatively synthesis gas or methane can be used; however, the sulfate reduction rates with methane are still extremely low. Heavy metals such as Cu, Zn, Cd, Pb, Ni and Fe can be removed from waste streams by precipitation with biogenic sulfide. Because of differences in solubility products the metals can be selectively precipitated. The insoluble metal sulfides formed can be recovered in order to be reused.

Bioprocess engineering of sulfate reduction for environmental technology

ESPOSITO, Giovanni
2008-01-01

Abstract

Sulfate reduction can be used in a large number of environmental technologies. Methanogenic bioreactors treating organic wastewater containing sulfate can be negatively affected by the sulfide produced; however, it is possible to combine methanogenesis and sulfate reduction when adequate measures are applied. For the treatment of inorganic wastewaters containing sulfate, organic substrates or H-2/CO2 are added as electron donors. Alternatively synthesis gas or methane can be used; however, the sulfate reduction rates with methane are still extremely low. Heavy metals such as Cu, Zn, Cd, Pb, Ni and Fe can be removed from waste streams by precipitation with biogenic sulfide. Because of differences in solubility products the metals can be selectively precipitated. The insoluble metal sulfides formed can be recovered in order to be reused.
File in questo prodotto:
Non ci sono file associati a questo prodotto.

I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.

Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11580/1233
 Attenzione

Attenzione! I dati visualizzati non sono stati sottoposti a validazione da parte dell'ateneo

Citazioni
  • ???jsp.display-item.citation.pmc??? ND
  • Scopus ND
social impact