Changes of chemical properties of humic acids from crude and fungal transformed lignite

被引：83

作者：

Dong, LianHua ^{[1
]}

Yuan, Quan ^{[1
]}

Yuan, HongLi ^{[1
]}

机构：

[1] China Agr Univ, Minist Agr, Key Lab Agr Microbial Resource & Applicat, Coll Biol Sci, Beijing 100094, Peoples R China

来源：

FUEL | 2006年 / 85卷 / 17-18期

基金：

中国国家自然科学基金;

关键词：

humic acids; water-soluble humic material; fungal transformation;

D O I：

10.1016/j.fuel.2006.05.027

中图分类号：

TE [石油、天然气工业]; TK [能源与动力工程];

学科分类号：

0807 ; 0820 ;

摘要：

The development of biological processes for fossil energy utilization has received increasing attention in recent years. There are abundance of lignite resources in China and the lignite, a low-grade coal, can be transformed by a Penicillium sp. After fungal transformation, the contents of humic acid and water-soluble humic material increased from 38.6% to 55.1%, and from less than 4.0% to 28.2%, respectively. The differences in chemical properties of crude lignite humic acid (aHA), fungal transformed lignite humic acid (bHA) and water-soluble humic material from fungal transformed lignite (WS) were studied. Elemental analysis and size exclusion chromatography showed that the N content of bHA increased by 47.36% compared with aHA, and the molecular mass of bHA was smaller than aHA. And the WS with the smallest molecular mass contained most content of N. The C-13 NMR and FT-IR spectra of aHA and bHA showed that allA contained more aromatic structure than bHA. (c) 2006 Elsevier Ltd. All rights reserved.

引用

页码：2402 / 2407

页数：6

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