Nitrogen input leads to the differential accumulation of polycyclic aromatic hydrocarbons in the low- and high-density fractions in sewage-irrigated farmland soil

2022 ◽  
Vol 297 ◽  
pp. 118813
Author(s):  
Kunlong Hui ◽  
Yini Cui ◽  
Wenbing Tan
Keyword(s):  
Polycyclic Aromatic Hydrocarbons ◽  
Aromatic Hydrocarbons ◽  
High Density ◽  
Nitrogen Input ◽  
Density Fractions ◽  
Farmland Soil ◽  
Polycyclic Aromatic

Microbial Properties and Degradation of Polycyclic Aromatic Hydrocarbons in the Contaminated Farmland Soil with Bioremediation

2014 ◽  
Vol 665 ◽  
pp. 534-537
Author(s):  
Hong Wang ◽  
Hai Bo Li ◽  
Xin Wang ◽  
Ji Fu Ma
Keyword(s):  
Polycyclic Aromatic Hydrocarbons ◽  
Aromatic Hydrocarbons ◽  
Contaminated Soil ◽  
Significant Positive Correlation ◽  
Removal Rate ◽  
Microbial Properties ◽  
Total Pahs ◽  
Farmland Soil ◽  
Polycyclic Aromatic ◽  
Microbial Agent

Degradation of polycyclic aromatic hydrocarbons (PAHs) and microbial quantity were investigated in aged PAHs-contaminated soil in a pot experiment with regrass and alfalfa. After 60 days germination the concentration of total PAHs in soil decreased by 37.57% and 38.41% with the treatment of ryegrass-microbe agent and alfalfa-microbe agent. The processes of ryegrass and alfalfa were 18.72% and 19.34%. The root system promoted the quantity of microbe and the microbial agent was benefit for the PAHs degrading microbe. And there was significant positive correlation between the number of PAHs degrading microorganisms and the removal rate of PAHs in the soil.

Study on In Situ Bioremediation of Polycyclic Aromatic Hydrocarbon Contaminated Farmland Soil

2012 ◽  
Vol 610-613 ◽  
pp. 1359-1363 ◽  
Author(s):  
Hong Wang ◽  
Hai Bo Li
Keyword(s):  
Polycyclic Aromatic Hydrocarbons ◽  
Aromatic Hydrocarbons ◽  
Northeast China ◽  
Removal Rate ◽  
Farmyard Manure ◽  
Irrigation District ◽  
In Situ Experiment ◽  
Farmland Soil ◽  
Polycyclic Aromatic

To improve phytoremediation efficiency of aged polycyclic aromatic hydrocarbons (PAHs), in-situ experiment was conducted in the Shenfu wastewater irrigation district in northeast China. Several strengthen measures, including microbe agent, farmyard manure, N-fertilizer, fungi, were taken. The results showed strengthen measures increased of PAHs to alfalfa and ryegrass were 46.36% and 51.12%. The removal rate of 35.98% and 37.54% were achieved for the removal to 5-6 rings PAHs. In-situ experiment proved that strengthened phytoremediation didn’t cause the accumulation of PAHs in inside plant bodies, and it could be used in the farm soil contaminated with PAHs.

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