This study performs an environmental techno-economic assessment (ETEA) for multiple microalgae biorefinery concepts at different locations, those being Belgium and India. The ETEA methodology, which integrates aspects of the TEA and LCA methodologies and provides a clear framework for an integrated assessment model, has been proposed and discussed. The scenario in India has a higher profitability with a NPV of €40 million over a period of 10 years, while the environmental impact in Belgium is lower. The inclusion of a medium recycling step provides the best scenario from both perspectives. The crucial parameters for feasibility are the β-carotene price and content, the upstream environmental impact of electricity and the maximum biomass concentration during cultivation. The identification of these parameters by the ETEA guides future technology developments and shortens the time-to-market for microalgal-based biorefineries.

这项研究对比利时和印度不同地点的多种微藻生物精炼概念进行了环境技术经济评估（ETEA）。已经提出并讨论了ETEA方法，该方法融合了TEA和LCA方法的各个方面，并为集成评估模型提供了清晰的框架。印度的情况具有较高的获利能力，十年内的净现值为4000万欧元，而比利时的环境影响则较低。从两个角度来看，包括介质回收步骤都可提供最佳方案。可行性的关键参数是β-胡萝卜素的价格和含量，电力对上游环境的影响以及种植期间的最大生物量浓度。