Solar Hydrogen Project Group Update 4 th August 2009

Solar Hydrogen Project Bojan Tamburic & Fessehaye Zemichael 4 th 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 = r = t 0 = 29.3 K = r = t 0 = 35.6

C.reinhardtii growth kinetics Algal strain = CC-124 under dilution Temperature = 25°C Agitation = 50% Light intensity = 44% Algal strain = CC-124 under dilution Temperature = 25°C Agitation = 50% Light intensity = 44% K = r = t 0 = 31.3 K = r = t 0 = 42.2

C.reinhardtii growth kinetics Algal strain = CC-406 under dilution Temperature = 20°C Agitation = 50% Light intensity = 44% Algal strain = PMP1 with CO 2 and trace acetate Temperature = 20°C Agitation = 50% Light intensity = 44% K =? r = ? t 0 = ? K = 1.43 r = t 0 = 88.0

Investigating the pO 2 /pH 2 electrode Max pO 2 = 48.3% Flush with He Stop He flushing, min pO 2 = 8.2% Switch probe polarity to pH 2 Sparge with H 2 ≈ 30ml/min Stop H 2 sparging, pH 2 = 10.1% Stop He flushing, min pH 2 = 7.3% Natural rise up to pH 2 = 23.0% Switch probe polarity to pO 2 Flush with He Suspected temperature variations pO 2 pH 2

Solar Hydrogen Project Palang Bumroongsakulsawat 4 th August 2009

0.62V 0V -0.9V

Solar Hydrogen Project Steve Dennison 4 th August 2009

Fe 2 O 3 (HS): NaOH

Fe 2 O 3 (HS): NaOH-H 2 O

Fe 2 O 3 (HS): NaOH-H 2 O/MeOH

Solar Hydrogen Project Chris Carver 4 th 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