Civil and Environmental Engineering, University of Pittsburgh, PA 15261, USA.
Bioresour Technol. 2011 Jul;102(13):6892-901. doi: 10.1016/j.biortech.2011.04.018. Epub 2011 Apr 20.
A comparative life cycle assessment (LCA) was conducted on 20 scenarios of microalgae cultivation. These scenarios examined the utilization of nutrients and CO(2) from synthetic sources and waste streams as well as the materials used to construct a photobioreactor (PBR). A 0.2-m(3) closed PBR of Chlorella vulgaris at 30%-oil content by weight with the productivity of 25 g/m(2) × day was used as a case study. Results of the study show that the utilization of resources from waste streams mainly avoided global warming potential (GWP) and eutrophication impacts. Impacts from the production of material used to construct the PBR dominate total impacts in acidification and ozone depletion categories, even over longer PBR lifetimes; thus, the choice of PBR construction materials is important.
对 20 种微藻养殖方案进行了比较生命周期评估（LCA）。这些方案研究了利用合成来源和废物流中的养分和 CO(2)，以及构建光生物反应器（PBR）所用的材料。以重量计含油 30%、生物量生产率为 25 g/m(2)×天的 0.2m(3)封闭式普通小球藻 PBR 用作案例研究。研究结果表明，利用废物流中的资源主要避免了全球变暖潜能值（GWP）和富营养化影响。用于建造 PBR 的材料生产带来的影响在酸化和臭氧消耗类别中主导了总影响，即使在较长的 PBR 寿命期间也是如此；因此，PBR 建筑材料的选择很重要。
