油污沙释放油生成MOS的特性及其影响因素研究
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摘要
海洋石油雪(MOS)在油污沙滩的生物修复中发挥重要作用。采用模拟实验,研究了MOS的形成及海水盐度、混合能量对其生成的影响。结果表明MOS有茸状、纤维状、网状和树枝状几种形态,MOS絮体的沉降速率和胞外聚合物透明颗粒(TEP)含量都随盐度及混合能量的增加呈先增后减的趋势,盐度为35‰或混合能量为160r/min时絮体存在最大沉降速率和最大TEP含量。
Marine Oil Snow(MOS)plays an important role in the bioremediation of oil-contaminated sands.Simulation experiments were conducted to study the formation of marine oil snow and the effects of seawater salinity and mixing energy on the formation of MOS.The results showed that the morphology of MOS can be divided into velvety,fibrous,reticular and dendritic,and they have different fluorescence forms.The sedimentation rates and transparent exopolymer particles contents of MOS flocs increased firstly and then decreased with the increase of salinity and mixing energy,when the salinity was 35‰or the mixing energy was 160 r/min,the sedimentation rates and TEP contents were both maximum.
Marine Oil Snow(MOS)plays an important role in the bioremediation of oil-contaminated sands.Simulation experiments were conducted to study the formation of marine oil snow and the effects of seawater salinity and mixing energy on the formation of MOS.The results showed that the morphology of MOS can be divided into velvety,fibrous,reticular and dendritic,and they have different fluorescence forms.The sedimentation rates and transparent exopolymer particles contents of MOS flocs increased firstly and then decreased with the increase of salinity and mixing energy,when the salinity was 35‰or the mixing energy was 160 r/min,the sedimentation rates and TEP contents were both maximum.
引文
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[18]Passow U.Transparent exopolymer particles(TEP)in aquatic environments[J].Progress in Oceanography,2002,55(3–4):287-333.
[2]Li Z,Lee K,King T,et al.Assessment of chemical dispersant effectiveness in a wave tank under regular non-breaking and breaking wave conditions[J].Marine Pollution Bulletin,2008,56(5):903-912.
[3]Sun J,Zheng X L.A review of oil-suspended particulate matter aggregation-a natural process of cleansing spilled oil in the aquatic environment[J].Journal of Environmental Monitoring Jem,2009,11(10):1801.
[4]刘陈立,邵宗泽.海洋石油降解微生物的分离鉴定[J].海洋学报,2005,27(4):114-120.
[5]郭春叶,龚月生,刘林丽,等.酵母菌生长曲线的测定及其转葡萄芪合酶基因重组菌遗传稳定性的检测[J].安徽农业科学,2007,35(7):1909-1910.
[6]Passow U,Alldredge A L.A dye-binding assay for the spectrophotometric measurement of transparent exopolymer particles(TEP)[J].Limnology&Oceanography,1995,40(7):1326-1335.Advances in Colloid&Interface Science,2003,100(02):503-546.
[7]Bassin N J,Ichiye T.Flocculation behavior of suspended sediments and oil emulsions[J].Journal of Sedimentary Petrology,1977,47(2):671-677.
[8]李文艳.固体颗粒对原油乳状液稳定性影响的研究[D].华东理工大学,2011.
[9]孙军.海洋中的凝集网与透明胞外聚合颗粒物[J].生态学报,2005,25(5):1191-1198.
[10]夏文香.海水-沙滩界面石油污染与净化过程研究[D].中国海洋大学,2005.
[11]Omotoso O E,Munoz V A,Mikula R J.Mechanisms of Crude Oil–Mineral Interactions[J].Spill Science&Technology Bulletin,2002,8(1):45-54.
[12]Sun J,Khelifa A,Zheng X,et al.A laboratory study on the kinetics of the formation of oil-suspended particulate matter aggregates using the NIST-1941bsediment[J].Marine Pollution Bulletin,2010,60(10):1701.
[13]Passow U,Ziervogel K,Asper V,et al.Marine snow formation in the aftermath of the Deepwater Horizon oil spill in the Gulf of Mexico[J].Environmental Research Letters,2012,7(3):35301-35311(11).
[14]Lin Q,Mendelssohn I A.Impacts and recovery of the Deepwater Horizon oil spill on vegetation structure and function of coastal salt marshes in the northern Gulf of Mexico[J].Environmental Science&Technology,2012,46(7):3737.
[15]Passow U.Formation of rapidly-sinking,oil-associated marine snow[J].Deep Sea Research Part II Topical Studies in Oceanography,2016,129:232-240.
[16]王子超.盐度和重金属对序批式生物反应器性能及微生物群落结构影响的研究[D].中国海洋大学,2014.
[17]Alldredge A L,Passow U,Logan B E.The abundance and significance of a class of large,transparent organic particles in the ocean[J].Deep Sea Research Part I Oceanographic Research Papers,1993,40(6):1131-1140.
[18]Passow U.Transparent exopolymer particles(TEP)in aquatic environments[J].Progress in Oceanography,2002,55(3–4):287-333.