Economic analysis of a plant for biodiesel production from waste cooking oil via enzymatic transesterification using supercritical carbon dioxide

IF 4.4 3区工程技术 Q2 CHEMISTRY, PHYSICAL Journal of Supercritical Fluids Pub Date : 2014-01-01 DOI:10.1016/j.supflu.2013.10.018

Pedro Lisboa, Ana Rita Rodrigues, José Luis Martín, Pedro Simões, Susana Barreiros, Alexandre Paiva

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引用次数: 78

Abstract

Enzymatic transesterification is becoming a commercially competitive route to biodiesel. Supercritical CO₂ (scCO₂) is well established as a solvent for extraction processes. Here we analyze the economy of a scCO₂-based, enzymatic process, for the production of biodiesel from waste cooking sunflower oil (WCO). The conversion of WCO to fatty acid ethyl esters (FAEE) catalyzed by immobilized lipase from Thermomyces lanuginosus (Lipozyme TL IM), and downstream separation to recover biodiesel conforming to the EN14214 norm, were studied in a pilot plant unit. The data generated was used to design an envisaged industrial plant, for which an energy balance was carried out. Investment and production costs were estimated for the conversion of 8000 ton_WCO/year. This led to biodiesel costs of 1.64€/L and 0.75€/L (for a WCO price of 0.25€/kg; enzyme prices of 800€/kg and 8€/kg, respectively), which already reflect the ca. 10% impact of glycerol sales.

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超临界二氧化碳酶促酯交换法从废弃食用油生产生物柴油装置的经济分析

酶法酯交换反应正在成为一种具有商业竞争力的生物柴油生产途径。超临界CO2（scCO2）已被公认为萃取过程的溶剂。在这里，我们分析了利用废弃食用葵花油（WCO）生产生物柴油的基于scCO2的酶法的经济性。在中试装置上，研究了羊毛热菌固定化脂肪酶（Lipozyme TL IM）催化WCO转化为脂肪酸乙酯（FAEE），并在下游分离回收符合EN14214标准的生物柴油。所产生的数据用于设计一个设想的工业工厂，并对其进行了能源平衡。估计了8000吨WCO/年转换的投资和生产成本。这导致生物柴油成本分别为1.64欧元/升和0.75欧元/升（WCO价格为0.25欧元/公斤；酶价格分别为800欧元/公斤和8欧元/公斤），这已经反映了甘油销售约10%的影响。

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来源期刊

Journal of Supercritical Fluids 工程技术-工程：化工

CiteScore

7.60

自引率

10.30%

发文量

236

审稿时长

56 days

期刊介绍： The Journal of Supercritical Fluids is an international journal devoted to the fundamental and applied aspects of supercritical fluids and processes. Its aim is to provide a focused platform for academic and industrial researchers to report their findings and to have ready access to the advances in this rapidly growing field. Its coverage is multidisciplinary and includes both basic and applied topics. Thermodynamics and phase equilibria, reaction kinetics and rate processes, thermal and transport properties, and all topics related to processing such as separations (extraction, fractionation, purification, chromatography) nucleation and impregnation are within the scope. Accounts of specific engineering applications such as those encountered in food, fuel, natural products, minerals, pharmaceuticals and polymer industries are included. Topics related to high pressure equipment design, analytical techniques, sensors, and process control methodologies are also within the scope of the journal.