论文总字数：19273字

摘 要

伴随着社会的进步和科技的发展，化石能源的消耗需求不断扩大，随之而来的环境污染问题也成为了世界各国亟待解决的重大挑战。目前，世界各国都在探寻可以用来取代化石能、可再生的、不会对环境产生严重污染的绿色能源。生物电化学系统则是通过生物最基本的生物降解过程和电化学技术相结合，通过生物代谢过程将自然环境或人为活动过程中产生的可以二次利用的有机或无机污染物直接转化为电能，在污染物降解的同时达到产能的目的。菲是多环芳烃的典型代表之一，具有三致效应，严重威胁生态环境和人体健康。本文研究生物电化学对菲降解的能力和效率以及腐殖酸的加入对菲降解性能造成的变化，分析总结数据得到这几点结论：

1）分析外加电压对生物电化学系统生物降解菲的实验数据可以得出，当生物电化学系统中外加电压为1.0 V时，水样中的TOC去除率为86.5%，菲的去除率达最高值60.7%，半衰期下降至1.48天。

2）分析腐植酸对生物电化学系统生物降解菲的实验数据可以得出，当生物电化学系统中腐植酸浓度为0.3 g/L时，水样中的TOC的去除率为86.5%，菲的去除率达到76.9%，同时，半衰期下降至0.9天。

关键词：菲 腐植酸 生物电化学系统

Effect of humic acid assisted low-power enhanced bioelectrochemical system treatment of phenanthrene

ABSTRACT

With the advancement of society and the development of science and technology, the demand for fossil energy has been continuously expanded. The ensuing environmental pollution problem has also become a major challenge for all countries in the world. At present, all countries in the world are exploring green energy that can be used to replace fossil energy, which is renewable, and which will not cause serious pollution to the environment. Bio-electrochemical system is a combination of biological basic biodegradation process and electrochemical technology. It can directly convert organic or inorganic pollutants that can be used in the natural environment or anthropogenic activities into electrical energy through biological metabolic processes. Degradation of pollutants while achieving capacity. Phenanthrene is one of the typical representatives of polycyclic aromatic hydrocarbons. It has three-effects and seriously threatens the ecological environment and human health. This paper studies the efficiency and feasibility of phenanthrene degradation by BES and the effect of the addition of humic acid on the phenanthrene degradation performance. The induction experiment results in the following:

1. The efficiency of the biodegradation of PHE by the applied voltage on the BES system was studied. When the applied voltage was 1.0 V in the BES system, the removal rate of TOC reached 86.5%, and the removal rate of PHE reached the highest value of 60.7%, at the same time, the half-life of PHE dropped to 1.48 days.
2. The study the efficiency of humic acid biodegradation of PHE in BES system, when the concentration of humic acid in BES system is increased to 0.3 g/L, the removal rate of TOC reaches 86.5% and the removal rate of PHE reaches 76.9%. At the same time, the half life of PHE dropped to 0.9 days.

Key words: Phenanthrene; Humic acid; Bioelectrochemical systems

目录

摘要 I

ABSTRACT II

第一章 概论 1

1.1多环芳烃介绍 1

1.1.1多环芳烃来源及分布 1

1.1.2多环芳烃性质 1

1.1.3 多环芳烃危害 1

1.2生物电化学系统 2

1.2.1 生物电化学系统基本结构 3

1.2.2产电微生物 3

1.2.3电子传递 4

1.3 关于本论文 6

1.3.1 实验的主要研究内容 6

1.3.2 实验的目的与意义 6

第二章 实验方法 7

2.1 实验仪器与试剂 7

2.1.1 主要实验仪器 7

2.1.2 实验试剂 7

2.2生物电化学系统构建 8

2.3实验方法 10

2.4分析方法 10

第三章 结果与讨论 12

3.1外加电条件分析 12

3.2 腐植酸条件分析 15

第四章 结论与展望 19

4.1 结论 19

4.2 展望 19

参考文献 21

致谢 23

第一章 概论

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