Mixing Energy as hidden Energy Resource · binder . classical GCS EDL-theory 'I St 'I d I (x)...
Transcript of Mixing Energy as hidden Energy Resource · binder . classical GCS EDL-theory 'I St 'I d I (x)...
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Mixing Energy as hidden
Energy Resource
Bert Hamelers
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Hidden as we cannot feel it
WETSUS
IJsselmeer
Fresh water
Wadden Sea
Salt water
200m
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Important marine source
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(Source) G.L. Wick and W.R. Schmitt, “Prospects for
Renewable Energy from the Sea,” Marine Technology
Society Journal, 1977, vol. 11, pp. 16-21
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CO2 Gradient Energy
2000m
AIR
FLUE GAS
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Potential of Stationary Sources
Power Plant CO2 = 12Gt/yr = 850 TWh/yr
Heating & Industry CO2 = 11 Gt/yr = 720 TWh/yr
Globally: 1570 TWh/yr ≈ 400 Hoover dams
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ORIGIN ENERGY
pCO2= 0.3 bar
pN2 = 0.7 bar
pN2 = 1 bar
Ppiston = 0 bar
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SELECTIVE MIXING KEY
pCO2= 0.3 bar
pN2 = 0.7 bar
pN2 = 1 bar
Ideal N2 permeable membrane
Ppiston = 0.3 bar
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Diffusion Driven
Ionic Current & Potential
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Stacking Increases
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E1 E2 E3 E4 E6
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Ionic to Electronic Flow
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E1 E1000
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Fe
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Fe
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Fe
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Fe
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Potential amount of energy
1m3 Dead Sea +
1m3 Med. Sea
1m3 Brine +
1m3 River
1m3 Sea +
1m3 River
concentrated NaCl (mol/l)
diluted
NaCl (mol/l)
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Do not lose the Power
Vermaas et al, 2011, Environ. Sci. Technol., DOI 10.1021/es2012758
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Internal Resistance is Key
Vermaas et al, 2011, Environ. Sci. Technol., DOI 10.1021/es2012758
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Profiled membranes
Vermaas et al, 2011, J. Membr.Sci., DOI 10.1016/j.memsci.2011.09.043
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Mixing Energy Harvesting Technologies
Salinity
gradient
technologies
Selectivity Electricity
generation
Pressure
Retarded
Osmosis (PRO)
Water Turbine
Reverse
Electro-
Dialyses
Ions Electrochemical
reactions
Capacitive
technology
Ions Capacitor
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Capacitive Blue Energy Electrodes
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Salt adsorbing electrodes
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Raw carbon material (x 5000) Carbon + binder (x 5000)
Activated Carbon + polyvinylidene fluoride (PVDF)
binder
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classical GCS EDL-theory
St
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carbon
matrixdiffuse layer
electronic charge + ionic
charge=0
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Donnan driven process: Charging
1 Capmix project: a way to success for capacitive blue energy
(Sales et al., 2010)
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Donnan driven process: Discharging
1 Capmix project: a way to success for capacitive blue energy
(Sales et al., 2010)
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CDP with constant load
Sales et al., 2010, ES&T
+ - Rint
load
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+ - Rint
Galvanostat
Constant Current = Constant Loss
Charging
Discharging
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Energy cycle expanded
50 mA charge/discharge
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Energy extraction and power density
0.21 W/m2
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CO2 ENERGY
CO2 + H2O H2CO3 H+ + HCO3-
(Na+ + Cl-)
H+
HCO3- H+
HCO3-
CO2
(100%)
Air
(0.03% CO2)
Mixing
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WATER is KEY
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Experimental set-up
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OCV versus pCO2
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Energy Extraction Possible
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Mono-Ethanolamine absorbs CO2
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NH2
HO
NH3+
HO
NH(CO2-)
HO
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CO2 - Better CO2 absorption
- Higher conductivity
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MEA improves performance
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So far, so good
32 1
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New Principle
Zhu, Xiuping; Yang, Wulin; Hatzell, Marta; Logan, Bruce E; ,
Environmental science & technology, 2014,
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Thermal Gradients
Robert L. McGinnis and Menachem Elimelech
Environ. Sci. Technol., 2008, 42 (23), pp 8625–8629
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Brine-Brakish
http://www.reapower.eu/news.html
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Direct Thermal
Sales et al; ES&T letters 2014
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Hybrid systems
Joo-Youn Nam , Roland D. Cusick , Younggy Kim , and Bruce E. Logan *
Environ. Sci. Technol., 2012, 46 (9), pp 5240–5246
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Battery
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Flowable electrodes
CO2
H2CO3
H+
carbon suspension reservoir
Air HCO-
HCO-
HCO-
H+
H+H+
H2CO3
HCO-
H2CO3
AEM
CEM
e-
AEM
CEM
H2CO3
H+
H+
H+
HCO-
HCO-
HCO-
e-
inflow
inflow
outflow
inflow inflow
outflowsoutflows
electrons flowelectrons flow
3
3
3
3
3
3
3
Porada, S.; et al. Journal of Materials Chemistry A 2014, 2, 9313
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Mixing Energy
• Everywhere concentrations differences are
• Selective mixing crucial
• Huge potential
• Technologies under development
• Inspiring new directions