Abstract
Bioelectrochemicalsystems(BESs)areanovel,promisingtechnologyfortherecoveryofmetals.Theprerequisiteforupscalingfromlaboratorytoindustrialsizeisthathighcurrentandhighpowerdensitiescanbeproduced.Inthisstudywereporttherecoveryofcopperfromacoppersulfatestream(2gL-1Cu2+)usingalaboratoryscaleBESathighrate.Toachievethis,weusedanovelcellconfigurationtoreducetheinternalvoltagelossesofthesystem.Attheanode,electroactivemicroorganismsproduceelectronsatthesurfaceofanelectrode,whichgeneratesastablecellvoltageof485mVwhencombinedwithacathodewherecopperisreduced.Inthissystem,amaximumcurrentdensityof23Am-2incombinationwithapowerdensityof5.5Wm-2wasproduced.XRDanalysisconfirmed99%purityincopperofcopperdepositedontocathodesurface.Analysisofvoltagelossesshowedthatatthehighestcurrent,mostvoltagelossesoccurredatthecathode,andmembrane,whileanodelosseshadthelowestcontributiontothetotalvoltageloss.TheseresultsencouragefurtherdevelopmentofBESsforbioelectrochemicalmetalrecovery
Original language | English |
---|---|
Article number | 527 |
Number of pages | 8 |
Journal | Frontiers in Microbiology |
Volume | 6 |
DOIs | |
Publication status | Published - 2015 |
Keywords
- Bioelectrochemical systems
- Copper
- Metal recovery
- Microbial fuel cell
- Water treatment