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首页> 外文期刊>Journal of Polymers and the Environment >Polyhydroxyalkanoate (PHA) Production Using Volatile Fatty Acids Derived from the Anaerobic Digestion of Waste Paper
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Polyhydroxyalkanoate (PHA) Production Using Volatile Fatty Acids Derived from the Anaerobic Digestion of Waste Paper

机译：聚羟基烷酸酯（PHA）生产使用源自废纸厌氧消化的挥发性脂肪酸

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摘要

Waste paper as a resource for polyhydroxyalkanoate (PHA) production through anaerobic digestion is a low-cost strategy to produce bioplastic. In this study, volatile fatty acids (VFAs) produced from waste paper, one of the significant constituents of municipal solid waste, was utilized as a feedstock for polyhydroxyalkanoate (PHA) production. PHA production from synthetic VFAs byCupriavidus necatorwas initially optimized under different VFAs concentrations, VFAs ratios, and nitrogen sources. VFAs concentration of 10 g/L, 5:1:4 ratio of acetic, propionic, and butyric acids (HAc:HPr:HBu) and NaNO(3)as nitrogen source were considered the optimum conditions with 56.98% PHA and 0.31 g/g yield. Anaerobic digestion of shredded office paper (OP/S) produced the maximum VFAs (521.50 mg/L) after 15 days of incubation and were utilized for PHA synthesis. Almost 2.24-fold increase in the yield of PHA was achieved with limited nutrient medium compared to nutrient contained medium with a PHA content of 53.50 and 23.88%, respectively. PHA production using anaerobic effluent of waste paper is a promising approach where a series of pretreatment processes, the expensive enzymatic hydrolysis, and detoxification were no longer required, suggesting an environmentally friendly way of biopolymer production.
机译：废纸作为多羟基烷酸酯（PHA）通过厌氧消化生产的资源是生产生物塑料的低成本策略。在本研究中，由废纸生产的挥发性脂肪酸（VFA），这是城市固体废物的重要成分之一，用作多羟基烷烃（PHA）生产的原料。来自合成VFAS的PHA生产Bycupriavidus Necatorswas最初在不同的VFA浓度下进行优化，VFA比和氮源。 10g / L的VFA浓度为10g / L，5：1：4醋酸，丙酸和丁酸（HAC：HBR：HBU）和纳米（3）作为氮源的浓度被认为是56.98％PHA和0.31g /的最佳条件。 g产量。粉碎的办公纸（OP / S）的厌氧消化在孵育15天后产生最大VFA（521.50 mg / L），并用于PHA合成。与有限的营养培养基相比，与营养素含有的培养基相比，PHA的产量差异几乎增加2.24倍，分别为53.50％和23.88％。使用废纸厌氧流出物的PHA生产是一种有希望的方法，其中一系列预处理过程，昂贵的酶水解和排毒，表明了一种环保的生物聚合物生产方式。

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