Aqualia Gestión Integral del Agua S.A., C/Ulises, 18, 28043 Madrid, Spain.
Faculty of Engineering and the Environment, University of Southampton, Southampton, UK.
Bioresour Technol. 2014 Feb;153:307-14. doi: 10.1016/j.biortech.2013.11.087. Epub 2013 Dec 8.
Mass transfer of CO2 from flue gas was quantified in a 100m(2) raceway. The carbonation sump was operated with and without a baffle at different liquid/gas ratios, with the latter having the greatest influence on CO2 recovery from the flue gas. A rate of mass transfer sufficient to meet the demands of an actively growing algal culture was best achieved by maintaining pH at ∼8. Full optimisation of the process required both pH control and selection of the best liquid/gas flow ratio. A carbon transfer rate of 10gCmin(-1) supporting an algal productivity of 17gm(-2)day(-1) was achieved with only 4% direct loss of CO2 in the sump. 66% of the carbon was incorporated into biomass, while 6% was lost by outgassing and the remainder as dissolved carbon in the liquid phase. Use of a sump baffle required additional power without significantly improving carbon mass transfer.
在 100 平方米的（raceway）中定量研究了烟道气中 CO2 的传质。碳酸化坑在不同液气比下运行，有和没有挡板，后者对烟道气中 CO2 的回收影响最大。通过将 pH 值维持在 ∼8，可实现足以满足藻类培养物生长需求的传质速率。该过程的完全优化需要 pH 控制和最佳液气流量比的选择。通过仅在坑中损失 4%的 CO2，可实现 10gCmin(-1)的碳转移率，支持 17gm(-2)day(-1)的藻类生产力。66%的碳被纳入生物质，6%通过放气损失，其余部分以液相中溶解的碳形式存在。使用坑挡板需要额外的功率，而不会显著提高碳传质速率。
