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| The degradation properties of immobilized bacteria using corn stover-derived biochars as carriers |
| Received:August 09, 2016 |
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| KeyWord:biochar;immobilized bacteria;atrazine;bio-degradation |
| Author Name | Affiliation | E-mail | | JIANG Qun | College of Resources and Environment, Northeast Agricultural University, Harbin 150030, China | | | YANG Fan | College of Resources and Environment, Northeast Agricultural University, Harbin 150030, China | | | ZHU Mo-ran | College of Resources and Environment, Northeast Agricultural University, Harbin 150030, China | | | ZHAO Lu-lu | College of Resources and Environment, Northeast Agricultural University, Harbin 150030, China | | | YAN Li-long | College of Resources and Environment, Northeast Agricultural University, Harbin 150030, China | | | ZHANG Ying | College of Resources and Environment, Northeast Agricultural University, Harbin 150030, China | zhangying_neau@163.com |
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| Abstract: |
| The biodegradation of atrazine in aqueous solution by immobilized bacteria using corn stover-derived biochars were studied. The degradation bacteria screened by cooperators in our laboratory was named as Acinetobacter lwoffii DNS32. Those strains grew well on corn stover-derived biochars, and the degradation rate of immobilized bacteria could reach 94% at 40 h, which implied that their degradation efficiency was higher than that of free bacteria(70%). At pH=5 and pH=10, the degradation rate of immobilized bacteria was 42% and 35% respectively, which showed they had better adaptability to pH. At 10℃, the degradation rate of immobilized bacteria was 14% higher than that of free bacteria, which certified that they had better cold tolerance. In the simulation experiments treating atrazine pollution water, immobilized degradation bacteria were still active after 30 d, indicated that immobilized bacteria had efficient and lasting repairing effect for atrazine contaminated water. |
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