Process modeling and simulation for butanol removing from fermentation broth by extraction with biodiesel. (February 2019)

• Record Type: Journal Article
• Authors: Dumitrescu, Anca Madalina; Banu, Ionut; Bumbac, Gheorghe
• Is Part Of: Renewable energy. Volume 131(2019)
• Page Start: 137
• Page End: 143
• Publication Date: 2019-02
• Subjects: Liquid-liquid extraction -- Butanol -- ABE fermentation -- Biodiesel -- Biobutanol-biodiesel blends; Renewable energy sources -- Periodicals; Power resources -- Periodicals; Énergies renouvelables -- Périodiques; Ressources énergétiques -- Périodiques; 333.794
• DOI: 10.1016/j.renene.2018.07.040
• Languages: English
• ISSNs: 0960-1481

Abstract

Abstract: The present paper evaluates the feasibility of a process flowsheet for butanol bioproduction, as pure compound or as a blend with the biodiesel used as the liquid-liquid extraction (LLEx) solvent. In order to evidence this aspect, a modeling and simulation study was performed using Aspen Hysys commercial simulator. Process simulation results evidenced specific (per ton of butanol separated) power consumption of 22.5 kW/t and hot and cold utility specific consumptions were in power equivalences of 3.4 MW and 2.6 MW respectively. In order to achieve a feasible extraction process of biobutanol from the fermentative broth, a specific quantity of 1.125 t/t biodiesel (recovered as a blend) was required. Highlights: A continuous process separating bio butanol from fermentation broth using liquid-liquid extraction with biodiesel is proposed. Operating conditions and specific consumption of extracting agent and utilities were evaluated using Aspen Hysys. Almost all material resources could be recovered efficiently. High energy saving in the separation stage, could be realized by combining LLEx with distillation. The results evidence favorable characteristics for an efficient and sustainable process.