2024-03-29T02:06:11Zhttps://gredos.usal.es/oai/requestoai:gredos.usal.es:10366/1437342022-02-07T15:39:30Zcom_10366_138521com_10366_4512com_10366_3823col_10366_138522
2020-07-23T07:47:28Z
urn:hdl:10366/143734
Optimal technology selection for the biogas upgrading to biomethane
Martín-Hernández, Edgar
Sánchez Guerras, Lidia
Martín Martín, Mariano
Renewable Energy
Biogas
Biomethane
Upgrading
Process Design
Mathematical Optimization
Biogas
Hidrógeno
[EN]A systematic approach is developed for the conceptual optimal design of biomethane production via carbon capture. A hybrid heuristic-mathematical procedure is proposed to determine the optimal technology and operating conditions. The heuristic step consists of a literature-based screening of the available technologies. After the prescreening stage, the technologies selected are amine absorption, pressure swing adsorption (PSA), and membrane separation. The mathematical stage is composed of two steps. First, different alternatives for each technology are modeled based on first principles and rules of thumb. These models are used to select the optimal configuration for each process considered. Second, a superstructure model for biomethane production is developed integrating the pre-selected upgrading technologies to select the optimal process, as well as to determine the optimal operating conditions. Four waste sources are analyzed: cattle manure, swine manure, municipal food waste, and sludge. The results suggest that the best amine is diethanolamine (DEA), the best membrane material is the polyimide, and the suggested zeolite is 13X among the ones studied. Finally, among the three technologies, the overall results show that carbon capture using a PSA system using zeolite 13X results in lower production and investment costs, but very close to the use of membranes. The results indicate that food waste shows the lowest production cost for biomethane 0.36 €/Nm3, due to the largest organic matter content, whereas the investment costs are 67 M€, considering a biogas production rate of 0.035 kg of biomethane per kg of waste and the processing of 311 kt/yr of food waste. Credits or incentives are still needed for biomethane to be competitive with fossil natural gas.
2020-07-23T07:47:28Z
2020-07-23T07:47:28Z
2020-09-10
info:eu-repo/semantics/article
Martín-Hernández, E., Sánchez Guerras, L., Martín Martín, M. Optimal technology selection for the biogas upgrading to biomethane. Journal of Cleaner Production 267 (2020) 122032
0959-6526
http://hdl.handle.net/10366/143734
eng
https://doi.org/10.1016/j.jclepro.2020.122032
SA026G18
EDU/556/2019
info:eu-repo/semantics/openAccess
Elsevier