Bio-based production of crotonic acid by pyrolysis of poly(3-hydroxybutyrate) inclusions
Bio-based production of crotonic acid by pyrolysis of poly(3-hydroxybutyrate) inclusions
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DOI：
10.1016/j.jclepro.2014.07.064
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发表时间：
2014-11-15
影响因子：
11.1
通讯作者：
Zahari, Mior Ahmad Khushairi Mohd
中科院分区：
文献类型：
--
作者：
Mamat, Mohd Rahimi Zakaria;Ariffin, Hidayah;Zahari, Mior Ahmad Khushairi Mohd
由于化石燃料的供应有限、价格上涨以及对环境可持续性的要求，生物基材料的开发已成为全球新的焦点。目前通过石油化学途径的巴豆酸的工业生产具有几个缺点：i）不可再生，因为它来源于石油资源，ii）涉及许多复杂的步骤，和iii）产率低。因此，本文提出了一种生产生物基巴豆酸的方法，通过直接热解细菌聚（3-羟基丁酸酯）包合物作为替代石油化工路线。聚（3-羟基丁酸酯）包合物的热重曲线显示聚（3-羟基丁酸酯）降解发生在270 ° C-350 ° C的温度范围内，最大降解速率在310 ° C。在310 ° C下等温热解聚（3-羟基丁酸酯）的产物的分析表明，热解聚（3-羟基丁酸酯）内含物产生约63%的巴豆酸。这比通过石油化学方法生产的传统巴豆酸高30%。所提出的方法还提供了其他好处，例如可再生和加工简单。此外，发酵和热解的副产物易于处理，从而最大限度地减少对环境的威胁。此外，由于与化石资源相关的社会、环境和经济问题，预计在不久的将来对生物基产品的需求将上升，这使得生物基生产方法更具吸引力和有利。因此，细菌聚（3-羟基丁酸酯）内含物的热解为巴豆酸生产的可再生和绿色化学提供了新的见解。(C)2014爱思唯尔有限公司版权所有。
Bio-based material development has become a new focus globally due to limited supply, increasing price of fossil fuel, and demands for environment sustainability. Current industrial production of crotonic acid through petrochemical route has several drawbacks: i) non-renewable, as it is derived from petroleum resource, ii) involves numerous complicated steps, and iii) produces low yield. Therefore, this paper proposes a method for production of bio-based crotonic acid by direct pyrolysis of bacterial poly(3-hydroxybutyrate) inclusion as an alternative to the petrochemical route. Thermogravimetric profile of poly(3-hydroxybutyrate) inclusions showed poly(3-hydroxybutyrate) degradation occurred at a temperature range of 270 degrees C-350 degrees C with maximum degradation rate at 310 degrees C. Analysis of products from isothermal pyrolysis of poly(3-hydroxybutyrate) at 310 degrees C revealed that pyrolysis of poly(3-hydroxybutyrate) inclusions yielded approximately 63% of crotonic acid. This is 30% higher than the conventional crotonic acid production via petrochemical method. The proposed method also offers other benefits such as renewable and simpler in processing. Besides, by-products of fermentation and pyrolysis are easy to treat, thus minimizing threat to the environment. Moreover, demands for bio-based products are expected to rise in the near future because of social, environmental and economical issues related to fossil resources which make bio-based production method more appealing and favourable. Therefore, pyrolysis of bacterial poly(3-hydroxybutyrate) inclusions provides new insight of renewable and green chemistry of the crotonic acid production. (C) 2014 Elsevier Ltd. All rights reserved.