Suzan Timimi

C-Cycle. Capture and Activation of Carbon Dioxide using Hydrotalcite

timimiSuzan Timimi
MEng in Chemical Engineering
July 2007 – July 2010.
Sponsor: EPSRC

Suzan Timimi received an MEng degree in Chemical Engineering in 2007 from the University of Birmingham and then joined the Reaction Engineering Research Group.

The aims of Suzan’s project are to:

  • Reduce CO2 emissions, which are mainly from power stations, by capturing CO2 on hydrotalcite adsorbent and subsequently minimise its effect on global warming.
  • Determine the best hydrotalcite formulation, and the best operating conditions for CO2 capture.
  • To study dry reforming of methane reaction, using hydrotalcite.
  • To study the adsorption of CO2 in packed bed reactor to determine the adsorption isotherm.

Hydrotalcite is prepared by co-precipitation method. The precipitation method has a wide operational flexibility, such as solvent, temperature, precipitating agent and pH. Suzan used varying pH to make the hydrotalcite precipitate and found that a pH of 8.5 and a calcination temperature of 600 degrees C gave the most desirable properties for the hydrotalcite, such as high surface area and a well-defined crystal structure.

Suzan enjoys the friendly environment and high standard of facilities (recently refurbished laboratory) offered at the University of Birmingham. She also likes working as part of a team.

Relevant publications (From other researchers relevant to CO2 capture):

1. Y. Ding and E. Alpay, “Equilibria and kinetics of CO2 adsorption on hydrotalcite adsorbent”. Chemical Engineering Science 55 (2000) 3461-3474.

2. Oscar W. Perez-Lopez , Andressa Senger, “Effect of composition and thermal pretreatment on properties of Ni–Mg–Al catalysts for CO2 reforming of methane”. Applied Catalysis A: General 303 (2006) 234–244.

3. Jos´e A. Delgado • Maria A. Uguina, “Fixed-bed adsorption of carbon dioxide/methane mixtures on silicalite pellets”. Adsorption 12 (2006) 5–18.