Study on Remediation of HMW-PAHs Contaminated Soil by Fusarium sp.- Starch-Alfalfa in Coal Mine Area

doi:10.13870/j.cnki.stbcxb.2017.05.055

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Study on Remediation of HMW-PAHs Contaminated Soil by Fusarium sp.- Starch-Alfalfa in Coal Mine Area

更新时间：2025-03-12

- Study on Remediation of HMW-PAHs Contaminated Soil by Fusarium sp.- Starch-Alfalfa in Coal Mine Area
- Vol. 31, Issue 5, Pages: 350-355(2017)
- 作者机构：
  
  1. 河北农业大学资源与环境科学学院,河北省农田生态环境重点实验室,河北,保定,071000
  2. 河北省环境科学研究院,石家庄,050051
  3. 河北省农林科学院,石家庄,050051
- 作者简介：
- 基金信息：
- DOI：10.13870/j.cnki.stbcxb.2017.05.055
  CLC： X53;X173
- Published：2017
- 稿件说明：
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Study on Remediation of HMW-PAHs Contaminated Soil by Fusarium sp.- Starch-Alfalfa in Coal Mine Area[J]. 2017, 31(5): 350-355.
DOI：

Study on Remediation of HMW-PAHs Contaminated Soil by Fusarium sp.- Starch-Alfalfa in Coal Mine Area[J]. 2017, 31(5): 350-355. DOI： 10.13870/j.cnki.stbcxb.2017.05.055.

摘要

以煤矿区高环芳烃（HMW-PAHs）污染农田土壤为研究对象，通过添加淀粉且接种菌株ZH-H2（Fusarium sp.）的苜蓿盆栽试验，研究苜蓿单一处理、ZHH2-苜蓿2因素处理和ZHH2-淀粉-苜蓿3因素处理对污染土壤5环、6环HMW-PAHs的修复效果。结果表明：苜蓿单一处理（M）对6种HMW-PAHs单体（BbF、BkF、BaP、InP、DbA和BghiP）的去除率为4.22%~45.01%；不同接菌剂量与苜蓿2因素处理对HMW-PAHs的降解作用有明显差异，其中H1+M、H2+M对6种HMW-PAHs单体的去除率分别为11.01%~45.30%和15.20%~43.58%，与苜蓿单一处理相比，BkF的去除率分别提高了1.62倍和2.60倍，其他单体差异不显著。H3+M对HMW-PAHs的去除却表现出显著抑制作用。在2因素基础上，进一步添加不同剂量淀粉的3因素处理（D1+H1+M，D1+H2+M，D1+H3+M，D2+H1+M，D2+H2+M和D2+H3+M）强化了对6种HMW-PAHs的修复效果，在所有3因素处理中，对BbF、BkF、BaP、InP、DbA和BghiP的去除率以D1+H2+M处理为最高，分别为28.87%，54.59%，47.04%，65.91%，66.42%，71.88%，比H2+M处理分别提高了0.46，2.59，1.71，1.15，0.52，1.37倍（P＜0.05），但是与D1+H1+M对各个HMW-PAHs单体的去除效果差异不显著。因此，淀粉（0.25g/kg）-ZHH2（0.1g/kg）-苜蓿处理成为了修复该煤矿区农田污染土壤的优势组合。

Abstract

The pot experiment was conducted to investigate how alfalfa

Fusarium sp. ZHH2

starch as well as their combination of different size could remove high molecular weight PAHs (HMW-PAHs) in agricultural soil in a coal mine area. The results showed that the removal rate of 6 types of individual HMW-PAHs (BbF

BkF

BaP

DbA

InP and BghiP) was in the range of 4.22%~45.01% in alfalfa treatment (M). There were significant differences among the combined treatments using different inoculum size of ZH-H2 and alfalfa (H1+M

H2+M

H3+M) for the degradation of HMW-PAHs. And the range of removal rates of 6 types of HMW-PAHs were 11.01%~ 45.30% and 15.20%~43.58% for treatment H1+M and H2+M

respectively. Compared with M treatment

the removal rates of BkF in teatment H1+M and H2+M increased by 1.62 times and 2.60 times respectively

whereas the other PAHs had no significant difference. However

compared to treatment M

H3+M treatment had a significant negative effect on the removal of HMW-PAHs . On the basis of H and M combination

starch of different size was added to improve the removal of these HMW-PAHs in soil. Further

the effect of the three factors treatments (D1+H1+M

D1+H2+M

D1+H3+M

D2+H1+M

D2+H2+M and D2+H3+M) on HMW-PAHs removal was analyzed. The results showed that the removal rates of BbF

BkF

BaP

InP

DbA and BghiP in the D1+H2+M treatment were the highest among all treatments of three factor combinations

which were 28.87%

54.59%

47.04%

65.91%

66.42%

and 71.88% respectively. And there was no significant difference between D1+H1+M and D1+H2+M in the removal of each HMW-PAH. Compared with H2+M treatment

the removal rate in the D1+H2+M treatment increased significantly by 0.46

2.59

1.71

1.15

0.52

and 1.37 times

respectively (P < 0.05). Therefore

the combination of Fusarium sp. ZH-H2

starch and alfalfa offers a suitable alternative for phytoremediation of aged PAH-contaminated soil in coal mining areas

with a recommended inoculation size of 0.5 g Fusarium sp. ZHH2

0.25g starch per kg soil with the growth of alfalfa.

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