Volatile fatty acids (VFAs) are preferred valuable resources, which can be produced from anaerobic digestion process. This study presents a novel technology using β-cyclodextrins (β-CD) pretreatment integrated alkaline method to enhance VFAs production from codigestion of food waste and sewage sludge. Experiment results showed that optimized ratio of food waste to sewage sludge was 3 : 2 because it provided adequate organic substance and seed microorganisms. Based on this optimized ratio, the integrated treatment of alkaline pH 10 and β-CD addition (0.2 g/g TS) performed the best enhancement on VFAs production, and the maximum VFAs production was 8631.7 mg/L which was 6.13, 1.38, and 1.57 times higher than that of control, initial pH 10, and 0.2 g β-CD/g TS treatment, respectively. Furthermore, the hydrolysis rate of protein and polysaccharides was greatly improved in integration treatment, which was 1.18–3.45 times higher than that of other tests. Though the VFAs production and hydrolysis of polymeric organics were highly enhanced, the primary bacterial communities with different treatments did not show substantial differences.

中文翻译：

---

基于β-环糊精和碱性处理的食物垃圾和污泥共消化产生的挥发性脂肪酸。

挥发性脂肪酸（VFA）是首选的宝贵资源，可以通过厌氧消化过程产生。这项研究提出了一种使用β-环糊精（β -CD）预处理集成碱性方法的新技术，该技术可以提高食物垃圾和污水污泥的共消化产生的挥发性脂肪酸。实验结果表明，食物垃圾与污水污泥的最佳比例为3：2，因为它提供了足够的有机物质和种子微生物。基于此优化比例，碱性pH 10和添加β -CD（0.2 g / g TS）的综合处理对VFA的产量产生了最佳的增强作用，最大VFA的产量为8631.7 mg / L，分别为6.13、1.38和初始pH 10和0.2 g较对照高1.57倍β -CD / g TS分别治疗。此外，在整合处理中蛋白质和多糖的水解速度大大提高，比其他测试高1.18–3.45倍。尽管高度增加了VFA的产生和聚合有机物的水解，但是采用不同处理方法的主要细菌群落并没有显示出实质性差异。