A Citrus Peel Waste Biorefinery for Ethanol and Methane Production

A Citrus Peel Waste Biorefinery for Ethanol and Methane Production
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用于生产乙醇和甲烷的柑橘皮废物生物精炼厂

DOI:
10.3390/molecules24132451
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发表时间:
2019
期刊:
影响因子:
4.6
通讯作者:
M. Koutinas
M. Koutinas
中科院分区:
化学2区
文献类型:
--
作者:
M. Patsalou;C. Samanides;E. Protopapa;S. Stavrinou;I. Vyrides;M. Koutinas

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本文论述了一个柑橘皮废弃物(CPW)生物炼制厂的开发,该厂采用对环境影响小的技术来生产乙醇和甲烷。比较了三种主要的酵母菌在使用经酸水解以及酸和酶联合水解预处理的CPW进行分批发酵生产乙醇时的情况。生产基于CPW的水解产物的最有效条件包括在116℃下处理10分钟。库德里阿兹威氏毕赤酵母KVMP10在高温(42℃)下进行的发酵中实现了最高的乙醇产量,达到30.7克/升。通过在重复分批厌氧消化发酵中使用固体生物炼制残渣,引入了一个零废弃物生物炼制厂,实现了342毫升/克挥发性固体的甲烷生成量。使用未经处理和干燥的CPW生产甲烷达到了与使用侧流相似的水平(339 - 356毫升/克挥发性固体),这表明所开发的生物工艺是生物燃料生产中能源密集型方法的一种先进替代方案。
This paper deals with the development of a citrus peel waste (CPW) biorefinery that employs low environmental impact technologies for production of ethanol and methane. Three major yeasts were compared for ethanol production in batch fermentations using CPW pretreated through acid hydrolysis and a combination of acid and enzyme hydrolysis. The most efficient conditions for production of CPW-based hydrolyzates included processing at 116 °C for 10 min. Pichia kudriavzevii KVMP10 achieved the highest ethanol production that reached 30.7 g L−1 in fermentations conducted at elevated temperatures (42 °C). A zero-waste biorefinery was introduced by using solid biorefinery residues in repeated batch anaerobic digestion fermentations achieving methane formation of 342 mL gVS−1 (volatile solids). Methane production applying untreated and dried CPW reached a similar level (339–356 mL gVS−1) to the use of the side stream, demonstrating that the developed bioprocess constitutes an advanced alternative to energy intensive methods for biofuel production.
田中:“火山岩的古强度:方法和数据库”
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