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Effects of Mucor mucedo on Corncob Decomposition in Pyr-Contaminated Soil Remediation


Affiliations
1 College of Environmental Science, Liaoning University, Shenyang 110036, China
2 Key Laboratory of Pollution Ecology and Environmental Engineering, Institute of Applied Ecology, Chinese Academy of Sciences, Shenyang 110016, China
3 Institute for Frontier Materials, GTP Research, Deakin University, Geelong Waurn Ponds Campus, Locked Bag 20000, Australia
 

The effect of polycyclic aromatic hydrocarbon and highly effective degradation fungi Mucor mucedo (MU) was studied on corncob decomposition in Pyr-contaminated soil for 120 days to identify the impact of a degradable immobilized carrier on the remediation of soil contaminated by persistent organic pollutants. Results showed that the corncob was mainly composed of hemicelluloses, cellulose, and water dissolved (WD) material, which accounted for 85 percent of its total weight. MU addition significantly affected corncob decomposition. Thus, humic acid production and WD and benzene-ethanol dissolved material degradation increased. The peaking of the WD content was delayed for 30 days or more. The extractable pyrene content positively correlated with the WD content in the corncob during the decomposition. These results theoretically support a refined remediation principle of immobilized microorganisms.

Keywords

Decomposition, Mucor mucedo, Remediation, Pyrene.
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  • Effects of Mucor mucedo on Corncob Decomposition in Pyr-Contaminated Soil Remediation

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Authors

Wei Hou
College of Environmental Science, Liaoning University, Shenyang 110036, China
Le Zhang
College of Environmental Science, Liaoning University, Shenyang 110036, China
Xi-Ping Ma
College of Environmental Science, Liaoning University, Shenyang 110036, China
Xiao-Jun Li
Key Laboratory of Pollution Ecology and Environmental Engineering, Institute of Applied Ecology, Chinese Academy of Sciences, Shenyang 110016, China
Ling-Xue Kong
Institute for Frontier Materials, GTP Research, Deakin University, Geelong Waurn Ponds Campus, Locked Bag 20000, Australia

Abstract


The effect of polycyclic aromatic hydrocarbon and highly effective degradation fungi Mucor mucedo (MU) was studied on corncob decomposition in Pyr-contaminated soil for 120 days to identify the impact of a degradable immobilized carrier on the remediation of soil contaminated by persistent organic pollutants. Results showed that the corncob was mainly composed of hemicelluloses, cellulose, and water dissolved (WD) material, which accounted for 85 percent of its total weight. MU addition significantly affected corncob decomposition. Thus, humic acid production and WD and benzene-ethanol dissolved material degradation increased. The peaking of the WD content was delayed for 30 days or more. The extractable pyrene content positively correlated with the WD content in the corncob during the decomposition. These results theoretically support a refined remediation principle of immobilized microorganisms.

Keywords


Decomposition, Mucor mucedo, Remediation, Pyrene.