pH调控对淘米水厌氧发酵的挥发性脂肪酸组成及奇偶数比率的影响  

Effect of pH regulation on the constitution and odd/even number proportion of VFAs in rice wash

作　　者：贺诗雅 方茜[1] 肖英豪 黄周玥 HE Shiya;FANG Qian;XIAO Yinghao;HUANG Zhouyue(College of Civil Engineering,Guangzhou University,Guangzhou Guangdong 510000)

机构地区：[1]广州大学土木工程学院,广东广州510000

出　　处：《环境污染与防治》2018年第3期323-328,共6页Environmental Pollution & Control

基　　金：国家自然科学基金资助项目(No.21207023);广州市科技计划项目(No.201510010111);广东省自然科学基金资助项目(No.2017A030313273)

摘　　要：为了分析餐厨类固体废物的厌氧发酵性质,以淘米水为对象研究了其厌氧发酵过程,并通过调控pH观察厌氧发酵过程中挥发性脂肪酸(VFAs)组成及奇偶数比率的变化。结果表明:不调控pH时,偶数VFAs占主导地位,在VFAs达到峰值时,偶数VFAs为2 057.0mg/L;当pH为4.0、5.0时,丁酸含量最高;当pH为6.0、7.0时,乙酸含量最高;当pH为8.0时,丙酸含量最高。调控pH对VFAs奇偶数比率有明显影响。In order to study the characteristics of food waste in anaerobic fermentation,the rice wash was studied as a research object,and the constitution as well as odd/even number proportion of volatile fatty acids(VFAs)was observed by regulating pH.The results showed that the even VFAs of rice wash dominated,which was 2 057.0 mg/L when VFAs reached its peak without pH regulation.When pH was 4.0 or 5.0,butyric acid had the highest content;when pH was 6.0 or 7.0,acetic acid had the highest content;when pH was 8.0,propionic acid had the highest content.The regulation of pH had a significant influence on the odd/even number proportion of VFAs.

关 键 词：淘米水 pH 挥发性脂肪酸 奇偶数比率 

分 类 号：X799[环境科学与工程—环境工程]