The financial feasibility of microalgae biodiesel in an integrated, multi‐output production system
The financial feasibility of microalgae biodiesel in an integrated, multi‐output production system
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微藻生物柴油在集成、多输出生产系统中的财务可行性
DOI：
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发表时间：
2017
期刊：
影响因子：
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通讯作者：
T. Rainey
中科院分区：
文献类型：
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作者：
Amar Doshi;S. Pascoe;L. Coglan;T. Rainey
基于微藻的工业发展停滞不前，这表明有必要对其商业潜力进行更广泛的评估，特别是考虑到其在种植中利用工业废水并从生物质中产生多种产出的能力，包括环境优越的上级生物燃料。本研究评估了通过酯交换生产微藻生物柴油的财务可行性，以及多输出生产系统中的饲料和肥料，并与互补的废物产生行业相结合。多输出系统允许生物柴油的价格以1.50美元/升的竞争性市场价格出售，而不是24.18美元/升，如果它作为唯一的主要输出生产。高价值的饲料和肥料抵消了生物柴油的低收入，以确保生产系统的财务可行性。对这些估计的敏感性分析表明，改进可以进一步增加这种多输出微藻生产系统的财务吸引力。特别是，脂质提取和酯交换过程的成本效益提高20%，净现值增加17倍。研究结果表明，多输出系统对微藻产业的潜力有几个好处，即微藻生产与互补产业相结合的协同效益，以及微藻生物燃料的投资吸引力，这些生物燃料的价格具有竞争力，同时仍然具有财务可行性。虽然替代转化工艺（例如发酵和热化学途径）将是提高生物燃料生产成本效益的关键，但综合多产出微藻产业的发展可以促进私人投资，更重要的是，政策主导的投资。© 2017化学工业协会和John Wiley & Sons，Ltd
The stagnant development of microalgae‐based industries suggests a need for a broader assessment of its commercial potential, particularly given its ability to utilize industrial waste effluents in cultivation and produce multiple outputs from the biomass, including an environmentally superior biofuel. This study assessed the financial feasibility of producing microalgae biodiesel from transesterification, together with feed and fertilizer in a multi‐output production system, integrated with a complementary waste‐producing industry. The multi‐output system allowed for the price of biodiesel to be sold at the competitive market price of US$1.50/L rather than US$24.18/L, if it were produced as the only primary output. The high‐value feed and fertilizer offset the low revenues of biodiesel to ensure the financial feasibility of the production system. Sensitivity analyses of these estimates indicated where improvements could further increase the financial appeal of this multi‐output microalgae production system. In particular, a 20% improvement in the cost‐efficiency of lipid extraction and transesterification processes was found to have a 17‐fold increase in the net present value. The results suggest that multi‐output systems have several benefits for the potential of a microalgae‐based industry, namely the synergistic benefits of integrating microalgae production with complementary industries and the investment appeal of microalgae‐based biofuels that can be priced competitively while still being financial feasible. Although alternative conversion processes (e.g. fermentation and thermochemical routes) would be key to the increased cost‐efficiency of biofuel production, the development of integrated multi‐output microalgae industries could prompt private and more importantly, policy‐led investment in development of the industry. © 2017 Society of Chemical Industry and John Wiley & Sons, Ltd