铁镍离子组合对褐煤发酵产甲烷的影响
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第 47 卷 第 6 期 煤田地质与勘探 Vol. 47 No.6
2019 年 12 月
COAL GEOLOGY & EXPLORATION
Dec. 2019
收稿日期:
2019-05-02
基金项目: 国家自然科学基金项目(41502158)；河南省科技攻关项目(182102310845)
Foundation item：National Natural Science Foundation of China(41502158)；Science and Technology Key Project of Henan Prov-
ince(182102310845)
第一作者简介: 夏大平，1983 年生，女，安徽颍上人，博士，副教授，从事煤层气地质与勘探开发研究工作. E-mail：xiadp22@hpu.ed.cn
引用格式: 夏大平，黄松，张怀文. 铁镍离子组合对褐煤发酵产甲烷的影响[J]. 煤田地质与勘探，2019，47(6)：59–66.
XIA Daping，HUANG Song，ZHANG Huaiwen. Effects of iron-nickel ion combination on methane produced by lignite fermentation[J]. Coal
Geology & Exploration，2019，47(6)：59–66.
文章编号: 1001-1986(2019)06-0059-08
铁镍离子组合对褐煤发酵产甲烷的影响
夏大平
1,2
，黄 松
1
，张怀文
1
(1. 河南理工大学能源科学与工程学院，河南 焦作 454000；
2. 中原经济区煤层(页岩)气协同创新中心，河南 焦作 454000)
摘要: 为研究外源最佳铁镍离子组合对煤发酵产气过程的影响机理，以陕北大柳塔褐煤为例，对
不同含量的铁镍离子分别进行煤发酵实验，优选出单一离子的最佳含量，进一步通过二元二次旋
转组合设计法确定铁镍离子的最优组合，利用气相色谱、X 射线衍射仪、傅里叶红外线光谱分析
仪等手段对添加最优组合质量浓度的实验组和空白组(不添加两种离子)产气过程的发酵液及反应
前后的煤样进行对比分析。结果表明：Fe
2+
、Ni
2+
的最佳质量浓度分别为 15 mg/L、0.005 mg/L，
Ni
2+
的添加存在明显的低促高抑现象；添加最优 Fe
2+
和 Ni
2+
组合的产气量相较于添加单一 Fe
2+
、
Ni
2+
分别增加了 13.64%和 20.69%；实验组的 pH 值、挥发性脂肪酸含量 VFA 及 OD
600
相较于空白
组的变化均提前 3 d 达到峰值，且煤的大分子结构得到更加充分的降解。最后分析了铁
镍离子组合对产甲烷过程的影响，阐明了两种微量元素对于促进煤发酵产甲烷的内在
机理，研究成果为提高次生生物成因气的产量及产气效率打下了理论基础。
关 键 词：煤发酵；铁镍离子；低促高抑；组合优选；液相分析；固相分析；陕北大柳塔矿
中图分类号：TD712 文献标识码：A DOI: 10.3969/j.issn.1001-1986.2019.06.010
Effects of iron-nickel ion combination on methane produced by lignite fermentation
XIA Daping
1,2
, HUANG Song
1
, ZHANG Huaiwen
1
(1. School of Energy Science and Engineering, Henan Polytechnic University, Jiaozuo 454000, China; 2. Collaborative
Innovation Center of Coalbed Methane and Shale Gas for Central Plains Economic Region, Jiaozuo 454000, China)
Abstract: In order to study the mechanism of the influence of exogenous optimal iron-nickel ions combination on
the gas production process of fermentation, taking Daliuta lignite as an example, experiments were carried out with
different contents of iron-nickel ions and the optimal concentration of single ions was elected. The optimal combi-
nation concentration of iron-nickel ions were determined by combined design of quadratic regression and common
rotation. The fermentation broth of experiment group and blank group(not to added any ions), the coal sample of
before and after experiment were analyzed by gas chromatography, X-ray diffraction, Fourier transform infrared
spectroscopy, etc. The results showed that the optimum concentrations of Fe
2+
and Ni
2+
were 15 mg/L and 0.005
mg/L, respectively, and the addition of Ni
2+
showed an obvious trend of promotion at low concentration and sup-
pression at high concentration. The gas production of experiment group increased by 13.64% and 20.69%,
respectively, compared with blank group. The peak time of pH, VFA and OD
600
of experiment group was ahead of 3
d, and the macromolecular structure of the coal was more fully degraded. Finally, the effect of iron-nickel ions
combination on methanogenic process was analyzed and the internal mechanism of iron-nickel ions in
promoted
methane production by coal fermentation was clarified, which laid a theoretical foundation for improving the yield
and efficiency of secondary biogenic gas.
Keywords: coal fermentation; iron-nickel ion; low promotion high inhibitory; combined optimization; liquid phase
analysis; solid phase analysis; Daliuta coal mine in northern Shaanxi
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