文献类型：期刊文献

中文题名：褐水厌氧共消化中DOM荧光光谱特征及效应研究

英文题名：Study on Fluorescence Spectra Characteristics and Effects of DOM in Anaerobic Co-digestion of Brown Water

作者：叶文风[1];刘辉[2];叶建锋[2];朱志浩[3];陈浩[2];周彦波[1]

机构：[1]华东理工大学资源与环境工程学院,上海200237;[2]上海市环境科学研究院,上海200233;[3]上海海洋大学环境科学与工程学院,上海201620

年份：2021

卷号：44

期号：5

起止页码：96

中文期刊名：环境科学与技术

外文期刊名：Environmental Science & Technology

收录：CSTPCD;;北大核心:【北大核心2020】；CSCD:【CSCD2021_2022】；

基金：国家重点研发计划(2018YFD1100502-02,2017YFE0135500);国家自然科学基金(51908355);上海自然科学基金(19ZR1443700)。

语种：中文

中文关键词：褐水;厌氧消化;三维荧光光谱法;溶解性有机物

外文关键词：brown water;anaerobic digestion;excitation-emission matrix fluorescence spectra;dissolved organic matter

摘要：文章以褐水(粪便)为底物,研究了不同共基质添加对厌氧消化甲烷产量的影响,并对过程中溶解性有机物(DOM)的三维荧光特征进行探究,研究了有机组分的变化对产甲烷的影响关系。结果表明,花生秸秆共消化组和褐水单消化组的累积甲烷产量分别为649和309 mL/g VS。采用三维荧光光谱结合平行因子分析发现,褐水单独消化和共消化过程的DOM均以微生物内源性产生为主。厌氧消化后,各反应器中色氨酸类蛋白荧光峰强度均显著降低,褐水单消化组的类腐殖质有所增加。4组条件消化全过程的DOM含有4个组分:紫外腐殖酸类、微生物源腐殖酸类、色氨酸类和酪氨酸类。褐水单消化组的类蛋白质组分(色氨酸、酪氨酸类)荧光强度综合较低,腐殖质类组分荧光强度相对较高,难以生物降解,这导致了厌氧效率不佳。共基质添加可以调节体系碳氮比和溶解性有机物含量,降低褐水厌氧消化中的类腐殖质的比例,并提高甲烷产率。
Using brown water(feces)as a substrate,the effects of different co-substrate additions on methane production in anaerobic digestion were studied,the three-dimensional fluorescence characteristics of dissolved organic matter(DOM)in the process were explored,and the relationship between the change of organic components on methane production was studied.The results showed that the cumulative methane production of peanut straw and brown water co-digestion group and sole brown water digestion group were 649 and 309 mL/g VS,respectively.The excitation-emission matrix fluorescence spectra combined with parallel factor analysis was used.It was found that the DOM during sole brown water digestion and co-digestion were mainly produced by microbial endogenous sources.After anaerobic digestion,the fluorescence peak intensity of tryptophan-like proteins in each reactor decreased significantly,and the humic-like substances in the sole brown water digestion group increased.The DOM of the four digestors contained 4 components:the UV humiclike component,the microbial humic-like component,the tryptophan-like component,and the tyrosine-like component.The overall fluorescence intensity of protein-like components(tryptophan and tyrosine)in the sole brown water digestion group was relatively low,and the fluorescence intensity of humic-like components which were difficult to be biodegraded was relatively high,thus lead to poor anaerobic efficiency.The addition of co-substrate can adjust the ratio of C/N and the content of DOM,reduce the proportion of humic-like substances in anaerobic digestion of brown water,and improve the methane yield.