Position: Home > Articles > Effect of starch and aeration addition on degradation of HMW-PAHs by immobilized Fusarium. sp in a polluted and aged soil of a coal mining area
Journal of Agro-Environment Science
2016,35
(09)
1709-1716
添加淀粉和通气对固定化Fusarium.sp修复煤矿区老化污染土壤HMW-PAHs的影响
作 者：
张雪娜;贾海滨;李橙;王伟;张丽秀;冯圣东;杨志新
单 位：
河北省环境科学研究院;河北农业大学资源与环境科学学院
关键词：
典型煤矿区;HMW-PAHs;固定化Fusarium.sp;淀粉;通气;土壤酶活性
摘 要：
为了提高Fusarium.sp对PAHs的修复效果,在典型煤矿区老化污染土壤中添加淀粉和通气,经为期60 d的土壤培养试验,研究玉米秸秆固定化Fusarium.sp对土壤10种HMW-PAHs的修复效果及不同处理下土壤中酶活性变化规律。结果表明:HMWPAHs(High molecular weight-PAHs)总量去除率表现为固定化菌剂+淀粉+通气处理(J+D+O,29.19%)≈固定化菌剂+淀粉处理(J+D,25.89%)>固定化菌剂处理(J,16.54%);4环、5环和6环PAHs去除率在J+D+O和J+D两组处理间的差异均不显著,且与J处理相比均有显著提高(P<0.05);三组处理对单个HMW-PAH的去除率分别为9.12%~21.73%、17.93%~43.12%、24.34%~35.79%,J+D+O和J+D处理对单个HMW-PAH的修复效果均有显著促进作用,其中,对Bk F的去除增幅最大,分别增加了68.09%、63.78%。从酶活性规律看,土壤过氧化氢酶活性呈CK>J>J+D>J+D+O(P<0.05)的规律,且与10种PAHs单体的去除率呈显著或极显著负相关;土壤木质素过氧化物酶活性却与Chry、Bk F、In P、Db A、Bghi P去除率呈显著正相关。综上认为,不同处理对单个PAHs的去除具有其选择性,且添加淀粉的两处理均显著提高了土壤中HMW-PAHs的修复效果。
译 名：
Effect of starch and aeration addition on degradation of HMW-PAHs by immobilized Fusarium. sp in a polluted and aged soil of a coal mining area
作 者：
ZHANG Xue-na;JIA Hai-bin;LI Cheng;WANG Wei;ZHANG Li-xiu;FENG Sheng-dong;YANG Zhi-xin;College of Resource and Environment Science, Agricultural University of Hebei;Hebei Institute of Environmental Science;Key laboratory for Farm Land Eco-environment;
关键词：
a coal mining area;;HMW-PAHs;;immobilized Fusarium.sp;;starch;;aeration;;soil enzyme activity
摘 要：
The soil incubation experiment was performed to study the effect of starch and aeration addition on HMW-PAHs degradation by Fusarium.sp in polluted and aged soil of a coal mining area. After 60 days incubation, the degradation rate of 10 HMW-PAHs as well as the change rule of soil enzyme activities were analyzed. The results showed that the treatments were in the following order in terms of ∑ 10HMW-PAHs degradation rate:immobilized Fusarium.sp + starch + aeration(J+D+O, 29.19%)≈immobilized Fusarium.sp + starch(J+D,25.89%)>immobilized Fusarium.sp(J, 16.54%). There was no significant difference between J+D+O and J+D for the degradation of ∑4-rings, ∑5-ring and ∑6-ring PAHs, but their degradation rates were higher than J significantly(P<0.05). The degradation range of 10 individual HMW-PAHs were 9.12%~21.73%, 17.93%~43.12%, 24.34%~35.79% in J, J+D and J+D+O treatments respectively. The results demonstrated that far higher degradation rates of the 10 individual HMW PAHs were achieved in J+D+O and J+D treatments than those in J treatment, but there was no significant difference between J+D+O and J+D. The removal rates of Bk F presented the highest increase extent in the two treatments and increased 68.09%, 63.78% respectively. In addition, the treatments were in the following order in terms of catalase enzyme activities:CK>J>J+D>J+D+O(P<0.05). We found that there were significant(P<0.05)linear negative correlation between the removal rates of the 10 individual HMW-PAHs and catalase activity in soil. However, the degradation rate of Chry, Bk F, In P, Db A, Bghi P had significant(P<0.05)linear positive correlation with lignin peroxidase activity. In conclusion, the individual PAH was removed by different treatments selectively, and the degradation rate were significantly improved by adding starch.
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