Removal of phenanthrene from coastal waters by green tide algae Ulva prolifera

doi:10.1016/j.scitotenv.2017.07.187

ISL OpenIR > 青海盐湖研究所知识仓储

	Removal of phenanthrene from coastal waters by green tide algae Ulva prolifera
	Zhang, Cui; Lu, Jian; Wu, Jun; Luo, Yongming
第一作者	Zhang, Cui
	2017-12-31
发表期刊	SCIENCE OF THE TOTAL ENVIRONMENT
ISSN	0048-9697
卷号	609 页码:1322-1328
关键词	Ulva Prolifera Green Tide Phenanthrene Natural Attenuation Phytoremediation Seawater
摘要	Ulva prolifera (U. prolifera) has been frequently involved in terrible algal proliferation in coastal areas. Although it is known to be associated with green tide, its contribution to the natural attenuation of the polycyclic aromatic hydrocarbons (PAHs) in seawater has not been evaluated. In this study, the removal of phenanthrene using U. prolifera collected from coastal water with green tide blooming was investigated. The results showed that phenanthrene could be removed efficiently in the presence of both the live and heat-killed U. prolifera. The phenanthrene concentrations of the live algae treatment decreased smoothly from 10.00 to 0.80 mu g L-1 through the whole process, while those of the heat-killed algae treatment decreased sharply from 10.0 to 2.71 mu g L-1 in one day and kept constantly after that. The in situ monitoring and visualizing using laser confocal scanning microscopy (LCSM) confirmed the accumulation of phenanthrene in U. prolifera. The increase in nutrient and temperature led to the increase of phenanthrene removal rate, while the salinity had less influence on the removal of phenanthrene. The removal efficiency by U. prolifera had a good linear relationship with phenanthrene initial concentration (r(2) = 0.999) even at 100 mu g L-1 which was higher than its environmentally relevant concentrations. High removal efficiency (91.3%) was observed when the initial phenanthrene concentration was set at environmental relevant concentration (5 mu g L-1). Results of this study demonstrate a potential new natural attenuation process for typical PAHs in coastal water during the outbreak of green tide. These findings indicate that the outbreak of harmful green tide algae may bring positive environmental benefits in the terms of the removal of harmful organic pollutants from coastal waters. (C) 2017 Elsevier B.V. All rights reserved.
DOI	10.1016/j.scitotenv.2017.07.187
语种	英语
引用统计
文献类型	期刊论文
条目标识符	http://ir.isl.ac.cn/handle/363002/6253
专题	青海盐湖研究所知识仓储盐湖地质与环境实验室
推荐引用方式 GB/T 7714	Zhang, Cui,Lu, Jian,Wu, Jun,et al. Removal of phenanthrene from coastal waters by green tide algae Ulva prolifera[J]. SCIENCE OF THE TOTAL ENVIRONMENT,2017,609:1322-1328.
APA	Zhang, Cui,Lu, Jian,Wu, Jun,&Luo, Yongming.(2017).Removal of phenanthrene from coastal waters by green tide algae Ulva prolifera.SCIENCE OF THE TOTAL ENVIRONMENT,609,1322-1328.
MLA	Zhang, Cui,et al."Removal of phenanthrene from coastal waters by green tide algae Ulva prolifera".SCIENCE OF THE TOTAL ENVIRONMENT 609(2017):1322-1328.

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