Volpi Maria Paula C, Fuess Lucas T, Moraes Bruna S
Interdisciplinary Center of Energy Planning, University of Campinas (NIPE/Unicamp). R. Cora Coralina, 330 - Cidade Universitária, Campinas, SP 13083-896, Brazil; School of Agricultural Engineering (FEAGRI), University of Campinas (Unicamp), Av. Candido Rondon, 501 - Cidade Universitária, Campinas SP 13083-875, Brazil.
Chemical Engineering Department, Polytechnic School, University of São Paulo (DEQ/EP/USP), Av. Prof. Lineu Prestes 580, Bloco 18 - Conjunto das Químicas, São Paulo, SP 05508-000, Brazil.
Bioresour Technol. 2021 Jun;330:124999. doi: 10.1016/j.biortech.2021.124999. Epub 2021 Mar 13.
The energy potential of residue-derived biogas via electricity and biomethane production was assessed in an integrated 1G2G sugarcane biorefinery concept. The mono-digestion of 1G-vinasse (1G-VN) was compared with different co-digestion systems, namely, 1G-VN + filter cake (FC) + deacetylation liquor (DL) in the season and FC + DL in the off-season. Gross energy output values and the resulting sugarcane use efficiency were also assessed in different biorefinery schemes. Electricity production from 1G to VN (5.0 MW) could be increased by over 400% through its co-digestion with FC and DL (22.3 MW). Alternatively, biomethane could fully supply the diesel-powered fleet (1.8 × 10 Nm month) of a sugarcane plant processing 10 million tons of sugarcane per harvest, and the surplus biogas could flexibly provide 36 MW of extra electricity. Biomethane could enhance the energy output of 1G2G sugarcane biorefineries by 15%. However, 2G processes still require marked improvements to maximize energy production from sugarcane.
在一个一体化的1G2G甘蔗生物精炼概念中，评估了通过发电和生产生物甲烷从残渣衍生生物气中获取能源的潜力。将1G酒糟（1G-VN）的单级消化与不同的共消化系统进行了比较，即在季节内1G-VN + 滤饼（FC）+ 脱乙酰液（DL）以及在淡季FC + DL。还在不同的生物精炼方案中评估了总能量输出值和由此产生的甘蔗利用效率。通过将1G-VN与FC和DL共消化（22.3兆瓦），1G-VN的发电量（5.0兆瓦）可提高400%以上。或者，生物甲烷可以完全满足一个每收获季加工1000万吨甘蔗的甘蔗厂的柴油动力车队（1.8×10 Nm/月）的需求，剩余的沼气可以灵活地提供36兆瓦的额外电力。生物甲烷可以使1G2G甘蔗生物精炼厂的能量输出提高15%。然而，2G工艺仍需要显著改进，以最大限度地提高甘蔗的能源产量。
