Three recently introduced ethanol equivalent-based sustainability metrics i.e., the sustainability value of resource replacement, the sustainability value of the fate of waste, and the sustainability indicator were used to assess the environmental sustainability of the possible bioethanol-based chemical industry in the Visegrad countries: Czech Republic, Hungary, Poland, and Slovakia. The production of basic chemicals such as ethylene, propylene, toluene, xylenes, styrene, and benzene from bioethanol was evaluated. The theory is based on the utilization of cornstarch-based, first-generation bioethanol as a feedstock to produce bio-ethylene, which could be subsequently used as a starting material of well-established chemical technologies to synthesize the listed bulk chemicals. The analysis, which is a non-life-cycle assessment-based approach enlightened that although the switch of the chemical industry from crude oil to bioethanol would be theoretically feasible, the actual bioethanol production was far less than required to cover the raw material needs. Due to the high conversion and selectivity of the reactions studied, the sustainability value of the fate of the waste approached the sustainable value in case of ethylene production (i.e., 1), and the sustainability value of resource replacement acted as the limiting factor in sustainability indicator calculation. We showed a possibility to replace fossil-fuel resources with bioethanol, though the actual bioethanol volumes are not enough to cover the resource needs. Of the Visegrad countries, Slovakia shows the highest sustainability, but none of them can reach the minimum sustainable value of 0.5 up to now.

中文翻译：

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维谢格拉德国家/地区的生物质化工产业的环境可持续性评估：捷克共和国，匈牙利，波兰和斯洛伐克

最近引入的三个基于乙醇当量的可持续性指标，即资源替代的可持续性价值，废物命运的可持续性价值和可持续性指标被用于评估维谢格拉德国家（捷克共和国，匈牙利，波兰和斯洛伐克）中可能基于生物乙醇的化学工业的环境可持续性。评估了从生物乙醇生产乙烯，丙烯，甲苯，二甲苯，苯乙烯和苯等碱性化学品的过程。该理论基于利用以玉米淀粉为基础的第一代生物乙醇作为生产生物乙烯的原料，随后可将其用作成熟的化学技术的原料，以合成所列的散装化学品。该分析是一种基于非生命周期评估的方法，它启发了人们，尽管化学工业从原油转向生物乙醇在理论上是可行的，实际的生物乙醇产量远低于满足原材料需求的需求。由于所研究反应的高转化率和选择性，因此在乙烯生产的情况下，废物命运的可持续性价值接近可持续性价值（即1），而资源替代的可持续性价值成为可持续性指标计算中的限制因素。尽管实际的生物乙醇量不足以满足资源需求，但我们展示了用生物乙醇替代化石燃料资源的可能性。在维谢格拉德（Visegrad）国家中，斯洛伐克显示出最高的可持续性，但到目前为止，没有一个国家能达到0.5的最低可持续性价值。