Abstract
In this study, the remedial effects of submerged macrophyte Potamogeton crispus L. on polycyclic aromatic hydrocarbon (PAH)-contaminated sediments were investigated. After a 54-day experiment, the dissipation ratios of phenanthrene and pyrene were 84.8-88.3 and 72.4-78.5% in rhizosphere sediments, which were significantly higher than those in non-rhizosphere sediments (54.2-66.6 and 54.7-58.5%). The dissipation increment increased not only with increasing spiked concentration, but also over time, while plant uptake accounted for only a small portion (<6%) of the dissipation increment. Moreover, bioavailable fraction tests revealed that biodegradation was not controlled by the amount of bioavailable PAHs. For better understanding of the microbial mechanism involved, phospholipid fatty acid (PLFA) profiles were analyzed. Biomass of microorganisms indicated by the total PLFA content was higher in rhizosphere sediments than in non-rhizosphere sediments and was related well to the dissipation ratios of the two PAHs. Cluster analysis showed that community structure significantly changed in rhizosphere sediments. Moreover, the increments of PAH dissipation in rhizosphere sediments had a strong positive correlation with those of polyph...Continue Reading
References
Jan 1, 1987·Comparative Biochemistry and Physiology. A, Comparative Physiology·E Wołk, W Bogdanowicz
Feb 9, 2000·Chemosphere·H H Liste, M Alexander
Apr 21, 2001·Journal of Agricultural and Food Chemistry·J GaoN L Wolfe
May 10, 2002·Chemosphere·Hans-Holger Liste, Martin Alexander
Jan 25, 2003·Environmental Science & Technology·Lin-Chi WangPerng-Jy Tsai
Jul 18, 2003·Chemosphere·Y MaM H Wong
May 4, 2004·Environment International·Tesema ChekolRufus L Chaney
Aug 28, 2004·Chemosphere·V AndreoniL Gianfreda
May 3, 2005·Environmental Pollution·Jeremy A RentzJerald L Schnoor
Apr 7, 2006·Applied and Environmental Microbiology·Mary Beth LeighJohn S Fletcher
Jan 30, 2007·Water Research·Y LiangM H Wong
Nov 13, 2008·The Science of the Total Environment·Yu H Su, Xue Y Yang
Oct 27, 2009·Environmental Pollution·Bin MaZed Rengel
Jan 19, 2010·Journal of Hazardous Materials·Sardar Alam CheemaYingxu Chen
Feb 9, 2010·Journal of Hazardous Materials·Louisa Wessels Perelo
Jul 14, 2010·Journal of Environmental Sciences (China)·Xinhua ZhanTinghui Jiang
Jan 17, 2012·Environmental Pollution·Bin MaJianming Xu
Jan 22, 2013·The Science of the Total Environment·Helena I GomesAlexandra B Ribeiro
Citations
Nov 12, 2016·Journal of Hazardous Materials·Fanbo Meng, Jie Chi
Jan 25, 2017·Environmental Science and Pollution Research International·Shuguang Deng, Defang Zeng
Jan 23, 2019·International Journal of Phytoremediation·Si LiuJie Chi
Jan 17, 2020·Integrated Environmental Assessment and Management·Xiaofei LvLinfei Hu
May 4, 2017·The Science of the Total Environment·Jing WeiXueping Chen
Dec 11, 2020·Chemosphere·Francesco BiancoGiovanni Esposito
May 26, 2021·The Science of the Total Environment·Congcong ZhaoQian Wang
Dec 21, 2018·Environmental Pollution·Zhenhua ZhaoYong Li