Evolution of humic substances in polymerization of polyphenol and amino acid based on non-destructive characterization

作     者：Jianmei Zou Jianzhi Huang Huichun Zhang Dongbei Yue Jianmei Zou;Jianzhi Huang;Huichun Zhang;Dongbei Yue

作者机构：School of EnvironmentTsinghua UniversityBeijing 100084China Department of Civil and Environmental EngineeringCase Western Reserve UniversityClevelandOH 44106USA 

出 版 物：《Frontiers of Environmental Science & Engineering》 (环境科学与工程前沿（英文）)

年 卷 期：2021年第15卷第1期

页      面：91-100页

核心收录：

学科分类：0830[工学-环境科学与工程（可授工学、理学、农学学位）] 07[理学] 09[农学] 0903[农学-农业资源与环境] 0713[理学-生态学] 

基　　金：This manuscript is based on work supported by the National Key R&D Program of China(No.2018YFC1901405) 

主　　题：Two-dimensional correlation spectroscopy(2D-COS) Humic substances(HSs) Humification Manganese dioxide Polyphenol 

摘      要：Abiotic humification is important in the formation and evolution of organic matter in soil and compost maturing ***,the roles of metal oxides in abiotic humification reactions under micro-aerobic remain *** aim of this study was to use non-destructive measurement methods to investigate the role of MnO_(2) in the evolution of humic substances(HSs)during oxidative polymerization of polyphenol-amino *** results suggested a synergistic effect between MnO_(2) and O_(2) in promoting the polymerization reaction and identified that MnO_(2) alone had a limited ability in accelerating the transformation of fulvic acid(FA)to humic acid(HA),whereas O_(2) was the key factor in the ***-dimensional correlation spectroscopy(2D-COS)showed that the evolution in the UV-vis spectra followed the order of 475–525 nm300–400 nm240–280 nm in the humification process,indicating the formation of simple organic matter followed by FA and then HA.13C nuclear magnetic resonance(13C NMR)analysis revealed that the products under both air and N2 conditions in the presence of MnO_(2) had greater amounts of aromatic-C than in the absence of MnO_(2),demonstrating that MnO_(2) affected the structure of the humification *** results of this study provided new insights into the theory of abiotic humification.