Enhanced biodegradation of pyrene and indeno(1,2,3-cd)pyrene using bacteria immobilized in cinder beads in estuarine wetlands

被引：34
|
作者：
Huang, Ru-ying [1 ]
Tian, Wei-jun [1 ,2 ]
Liu, Qing [1 ]
Yu, Hui-bo [1 ]
Jin, Xin [1 ]
Zhao, Yang-guo [1 ,2 ]
Zhou, Yu-hang [1 ]
Feng, Gong [1 ]
机构：
[1] Ocean Univ China, Coll Environm Sci & Engn, Qingdao 266100, Shandong, Peoples R China
[2] Minist Educ, Key Lab Marine Environm & Ecol, Qingdao 266100, Shandong, Peoples R China
来源：
MARINE POLLUTION BULLETIN | 2016年 / 102卷 / 01期
关键词：
Pyrene; Indeno(1,2,3-cd)pyrene; Immobilized; Cinder beads; Biodegradation; POLYCYCLIC AROMATIC-HYDROCARBONS; DEGRADATION; PAHS; BIOREMEDIATION; SOILS; OIL; PHENANTHRENE; METABOLISM; PETROLEUM; SEDIMENT;
D O I：
10.1016/j.marpolbul.2015.11.044
中图分类号：
X [环境科学、安全科学];
学科分类号：
08 ; 0830 ;
摘要：
Two strains (Pseudomonas taiwanensis PYR1 and Acinetobacter baumannii INP1) were isolated from PAH-contaminated Liaohe estuarine wetland using enrichment. The cells of PYR1 and INP1 were immobilized in cinder beads for pyrene and indeno(1,2,3-cd)pyrene biodegradation in wetland. Biodegradation of pyrene and indeno(1,2,3cd)pyrene in soils from wetland was carried out in pots using free cells as well as those immobilized in cinder beads to ascertain the role of bioaugmentation. Supported by the cinder beads, the immobilized cells degraded 70.7% and 80.9% of pyrene and indeno(1,2,3-cd)pyrene respectively after 30 days. While the free cells degraded only 58.2% and 55.3%. Additionally, microbial analysis with high-throughput sequencing revealed the changes of microbial communities in soil without and with cinder beads immobilized with strains. The result indicated that Gammaproteobacteria were dominant PAH-degrading groups during bioaugmentation. This effective approach can be used to treat other PAH-contaminated wetlands by immobilizing different species of bacteria in cinder beads. (C) 2015 Elsevier Ltd. All rights reserved.
引用
收藏
页码：128 / 133
页数：6
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