Solar Hydrogen Project Group Update 4 th August 2009.
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Solar Hydrogen Project Group Update 4 th August 2009
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Transcript of Solar Hydrogen Project Group Update 4 th August 2009.
Solar Hydrogen Project
Group Update
4th August 2009
Solar Hydrogen Project
Bojan Tamburic &
Fessehaye Zemichael
4th August 2009
C.reinhardtii growth kinetics
Algal strain = CC-124 Temperature = 25°C
Agitation = 40%Light intensity = 20%
Algal strain = CC-124 under dilution Temperature = 20°C
Agitation = 50%Light intensity = 44%
K = 0.345r = 0.0720t0 = 29.3
K = 0.432 r = 0.0523t0 = 35.6
)tr(t 0e1
KOD(t)
C.reinhardtii growth kinetics
Algal strain = CC-124 under dilutionTemperature = 25°C
Agitation = 50%Light intensity = 44%
Algal strain = CC-124 under dilutionTemperature = 25°C
Agitation = 50%Light intensity = 44%
K = 0.274 r = 0.112t0 = 31.3
K = 0.338 r = 0.0807t0 = 42.2
)tr(t 0e1
KOD(t)
C.reinhardtii growth kinetics
Algal strain = CC-406 under dilutionTemperature = 20°C
Agitation = 50%Light intensity = 44%
Algal strain = PMP1 with CO2 and trace acetate
Temperature = 20°C
Agitation = 50%
Light intensity = 44%
K =? r = ?t0 = ?
K = 1.43r = 0.0411t0 = 88.0
)tr(t 0e1
KOD(t)
Investigating the pO2/pH2 electrode
Max pO2 = 48.3%
Flush with He
Stop He flushing, min pO2 = 8.2%
Switch probe polarity to pH2
Sparge with H2 ≈ 30ml/min
Stop H2 sparging, pH2 = 10.1%
Stop He flushing, min pH2 = 7.3%
Natural rise up to pH2 = 23.0%
Switch probe polarity to pO2
Flush with He
Suspected temperature variations
pO2
pH2
Solar Hydrogen Project
Palang Bumroongsakulsawat
4th August 2009
0.62V 0V
-0.9V
Solar Hydrogen Project
Steve Dennison
4th August 2009
Fe2O3 (HS): NaOH
-2.0E-05
0.0E+00
2.0E-05
4.0E-05
6.0E-05
8.0E-05
1.0E-04
-0.50 -0.25 0.00 0.25 0.50 0.75 1.00
Potential vs qre / Volt
cd /
Acm
-2
Water only Water:MeOH 80/20
Fe2O3 (HS): NaOH
-0.10
-0.05
0.00
0.05
0.10
0.15
0.20
0.25
0.30
0.35
-0.50 -0.25 0.00 0.25 0.50 0.75 1.00
Potential vs qre / Volt
Ph
oto
curr
ent
den
sity
0.1M NaOH 0.1M NaOH-H2O/MeOH
Fe2O3 (HS): NaOH-H2O
-0.05
-0.025
0
0.025
0.05
0.075
0.1
0.125
0.15
-0.5 -0.4 -0.3 -0.2 -0.1 0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9
Potential vs qre / Volt
Ph
oto
curr
ent
Den
sity
/ A
cm-2
-1.0E-05
-5.0E-06
0.0E+00
5.0E-06
1.0E-05
1.5E-05
4.8 5 5.2 5.4 5.6
Time / s
cd
/ A
cm
-2
-1.0E-05
-5.0E-06
0.0E+00
5.0E-06
1.0E-05
1.5E-05
4.8 5 5.2 5.4 5.6
Time / s
cd
/ A
cm
-2
-1.0E-05
-5.0E-06
0.0E+00
5.0E-06
1.0E-05
1.5E-05
4.8 5 5.2 5.4 5.6
Time / s
cd
/ A
cm
-2
-1.0E-05
-5.0E-06
0.0E+00
5.0E-06
1.0E-05
1.5E-05
4.8 4.9 5 5.1 5.2 5.3 5.4 5.5
Time / s
cd /
Acm
-2
Fe2O3 (HS): NaOH-H2O/MeOH
-0.05
0.00
0.05
0.10
0.15
0.20
0.25
0.30
0.35
-0.5 -0.4 -0.3 -0.2 -0.1 0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1
Potential vs qre / Volt
Ph
oto
curr
en
t d
ens
ity
-1.0E-05
-5.0E-06
0.0E+00
5.0E-06
1.0E-05
1.5E-05
2.0E-05
4.8 5 5.2 5.4 5.6
Time / s
cd
/ A
cm
-2
-1.0E-05
-5.0E-06
0.0E+00
5.0E-06
1.0E-05
1.5E-05
2.0E-05
4.8 5 5.2 5.4 5.6
Time / s
cd
/ A
cm
-2
-1.0E-05
-5.0E-06
0.0E+00
5.0E-06
1.0E-05
1.5E-05
2.0E-05
4.8 5.0 5.2 5.4 5.6
Time / s
cd
Ac
m-2
-1.0E-05
-5.0E-06
0.0E+00
5.0E-06
1.0E-05
1.5E-05
2.0E-05
4.8 5 5.2 5.4 5.6
Time / s
cd
/ A
cm
-2
Solar Hydrogen Project
Chris Carver
4th August 2009
PEC Reactor
• Reactor set up
• Run as electrolyser – proof of concept (TnO anode)
• Next stage – put under sun lamp
• Use 2 compartment setup with membrane
Reference electrode
0.1M NaOH
Electrolyte in
