Contribution of biological processes to self-purification of water with respect to petroleum hydrocarbon associated with No. 0 diesel in Changjiang Estuary and Jiaozhou Bay, China

	Contribution of biological processes to self-purification of water with respect to petroleum hydrocarbon associated with No. 0 diesel in Changjiang Estuary and Jiaozhou Bay, China
	Wang, XL ; An, Y ; Zhang, J ; Shi, XY ; Zhu, CJ ; Li, RX ; Zhu, MY ; Chen, S
刊名	HYDROBIOLOGIA
	2002-02
卷号	469 期号:1-3 页码:179-191
关键词	self-purification petroleum-hydrocarbon phytoplankton bioconcentration biodegradation mesocosm
ISSN号	0018-8158
英文摘要	Mesocosms in 25-m(3) ethylene vinyl acetate or 4-m(3) polyethylene bags were performed at two sites in China: Changjiang Estuary in spring-summer 1998, and Jiaozhou Bay in autumn 1999 and spring-summer 2000. The experiments were designed to show the contributions of physical, physicochemical and biological processes to self-purification of water with respect to the water-soluble fraction (WSF) of petroleum hydrocarbon associated with No.0 diesel (PHAD). Over the experimental periods, the WSF-PHAD concentration in water declined significantly. A kinetic model for WAS-PHAD distribution in multiphase environments - in this case water (W), suspended sediment (SS), phytoplankton (PPT), zooplankton (ZPT) and atmosphere (ATM) - was developed to estimate the contributions of the various processes. In the model, the key processes responsible for self-purification include (1) physical transport by volatilization from W to ATM; (2) biological transformation through biodegradation; (3) biological transfer involving bioconcentration by PPT and ZPT; and (4) physicochemical transfer through sorption by SS. Model parameters were determined from the mesocosm experiments and parallel laboratory experiments, or taken from the literature. It indicated that volatilization plays an important role in short-term self-purification especially regarding alkanes with relatively low molecular weight, accounting for 82.9+/-2.5%. After the volatilization stops, bioconcentration by PPT contributes greatly to long-term self-purification especially regarding alkanes of higher molecular weight and polycyclic aromatic hydrocarbons (PHAs), accounting for 0.7 - 17.8% with an average of 7.8+/-7.3%. The bioconcentration is dominated by biomass of PPT as well as the WSF-PHAD concentration. However, the biodegradation process makes the greatest contribution to both the short- and long-term self-purification, affecting alkanes of both lower and higher molecular weight as well as PHAs. The results suggest that it is necessary to take into account the biological processes of biodegradation and bioconcentration in estimating the self-purification of water with respect to oil pollutants.
WOS关键词	GOLDEN-BROWN ALGAE ; CRUDE-OIL ; ISOCHRYSIS-GALBANA ; AQUATIC ORGANISMS ; GROWTH ; BIOAVAILABILITY ; DISPERSANTS ; KINETICS ; MODEL
WOS研究方向	Marine & Freshwater Biology
语种	英语
出版者	KLUWER ACADEMIC PUBL
WOS记录号	WOS:000175764800017
内容类型	期刊论文
源URL	[http://ir.fio.com.cn:8080/handle/2SI8HI0U/26274]
专题	自然资源部第一海洋研究所
通讯作者	Wang, XL
作者单位	1.Ocean Univ Qingdao, Sch Chem & Chem Engn, Qingdao 266003, Peoples R China 2.SOA, Inst Oceanog 1, Qingdao 266061, Peoples R China
推荐引用方式 GB/T 7714	Wang, XL,An, Y,Zhang, J,et al. Contribution of biological processes to self-purification of water with respect to petroleum hydrocarbon associated with No. 0 diesel in Changjiang Estuary and Jiaozhou Bay, China[J]. HYDROBIOLOGIA,2002,469(1-3):179-191.
APA	Wang, XL.,An, Y.,Zhang, J.,Shi, XY.,Zhu, CJ.,...&Chen, S.(2002).Contribution of biological processes to self-purification of water with respect to petroleum hydrocarbon associated with No. 0 diesel in Changjiang Estuary and Jiaozhou Bay, China.HYDROBIOLOGIA,469(1-3),179-191.
MLA	Wang, XL,et al."Contribution of biological processes to self-purification of water with respect to petroleum hydrocarbon associated with No. 0 diesel in Changjiang Estuary and Jiaozhou Bay, China".HYDROBIOLOGIA 469.1-3(2002):179-191.