The environmental biorefinery: state-of-the-art on the production of hydrogen and value-added biomolecules in mixed-culture fermentation,Green Chemistry

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The environmental biorefinery: state-of-the-art on the production of hydrogen and value-added biomolecules in mixed-culture fermentation
Green Chemistry ( IF 9.3 ) Pub Date : 2018-06-19 , DOI: 10.1039/c8gc00572a
Roman Moscoviz _{1,

2,

3,

4,

5} , Eric Trably _{1,

2,

3,

4,

5} , Nicolas Bernet _{1,

2,

3,

4,

5} , Hélène Carrère _{1,

2,

3,

4,

5}

Affiliation

The environmental biorefinery consists of recovering and adding value to waste, possibly through a multi-product approach. A first implementation of such a concept is the production of methane and nutrient-rich digestate by anaerobic digestion in biogas plants. However, methane and digestate have only a low added-value and biogas plants still require feed-in tariff policies to be economically viable. The aim of this article is to provide a meta-analysis of current biomass recovery technologies compatible with environmental applications (i.e. non-sterile conditions and carried out by microbial mixed culture). The focus was particularly on those able to produce high value-added fermentation metabolites. To achieve this objective, both qualitative (e.g. substrates and pretreatments) and quantitative data (e.g. yields, productivities, and process parameters) were retrieved from 624 manually-checked research articles, excluding review papers, and 134 patents published after 1997. In addition, a straightforward market study was carried out for nine promising biomolecules: H₂, ethanol, acetate, propionate, lactate, 1,3-propanediol, butyrate, caproate and polyhydroxyalkanoates (PHAs). Finally, the feasibility of producing each biomolecule in the context of an environmental biorefinery is discussed in light of current process performances and their related bottlenecks.

中文翻译：

环境生物精炼厂：混合培养发酵中氢气和增值生物分子生产的最新技术

环境生物精炼厂可能包括通过多种产品的方法来回收废物并为废物增加价值。这种概念的第一个实现是在沼气厂中通过厌氧消化生产甲烷和营养丰富的消化物。但是，甲烷和消化液的附加值较低，沼气厂仍要求上网电价政策在经济上可行。本文的目的是提供与环境应用（即非无菌条件并通过微生物混合培养进行）兼容的当前生物质回收技术的荟萃分析。重点尤其是那些能够产生高附加值发酵代谢物的物质。为了实现这一目标，定性（例如从624篇人工检查的研究文章（不包括评论论文）和1997年以后发布的134项专利中检索了底物和预处理）和定量数据（例如产量，生产率和工艺参数）。此外，对9项进行了直接的市场研究有前途的生物分子：H ₂，乙醇，乙酸盐，丙酸酯，乳酸酯，1,3-丙二醇，丁酸酯，己酸酯和聚羟基链烷酸酯（PHA）。最后，根据当前工艺性能及其相关瓶颈，讨论了在环境生物精炼厂中生产每种生物分子的可行性。

更新日期：2018-07-16

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