| 羟基自由基致死船舶压载水海洋有害生物研究 |
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| 引用本文： | 白敏冬,张拿慧,张芝涛,陈操,孟祥盈.羟基自由基致死船舶压载水海洋有害生物研究[J].环境科学,2012,33(2):454-458. |
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| 作者姓名： | 白敏冬 张拿慧 张芝涛 陈操 孟祥盈 |
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| 作者单位： | 大连海事大学环境工程研究所高气压强电场电离放电辽宁省重点实验室,大连 116026;大连海事大学环境工程研究所高气压强电场电离放电辽宁省重点实验室,大连 116026;大连海事大学环境工程研究所高气压强电场电离放电辽宁省重点实验室,大连 116026;大连海事大学环境工程研究所高气压强电场电离放电辽宁省重点实验室,大连 116026;大连海事大学环境工程研究所高气压强电场电离放电辽宁省重点实验室,大连 116026 |
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| 基金项目： | 国家杰出青年科学基金项目(61025001); 国家自然科学基金项目(50877005); 教育部长江学者奖励计划项目 |
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| 摘 要： | 利用大气压强电场电离放电的物理方法,将空气中的O2和海水中H2O(气态)电离、离解生成羟基自由基(.OH)等氧活性粒子,溶于部分压载水中形成高浓度羟基溶液,再注入到输运压载水的主管路中,实现在输送压载水的过程中快速致死海洋有害生物和病原体.在10 t.h-1的船舶压载水处理实验系统中,进行了.OH致死浮游生物和细菌的实验,.OH浓度为0.65mg.L-1时,致死率达100%,达到《国际公约》压载水排放标准.同时选用牟氏角毛藻(Chaetoceros muelleri)、小新月菱形藻(Nitzschia closterium)进行.OH致死生物形态学研究,在显微镜下观察到.OH严重地损害了细胞壁、细胞膜、胞内物质等的重要组成和功能物质.
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| 关 键 词： | 强电场放电 羟基自由基 船舶压载水 海洋微藻 致死 |
| 修稿时间： | 2011/8/23 0:00:00 |
Studies for Killing the Oceanic Harmful Organisms in Ship's Ballast Water Using Hydroxyl Radicals |
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| BAI Min-dong,ZHANG Na-hui,ZHANG Zhi-tao,CHEN Cao and MENG Xiang-ying.Studies for Killing the Oceanic Harmful Organisms in Ship''s Ballast Water Using Hydroxyl Radicals[J].Chinese Journal of Environmental Science,2012,33(2):454-458. |
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| Authors: | BAI Min-dong ZHANG Na-hui ZHANG Zhi-tao CHEN Cao and MENG Xiang-ying |
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| Institution: | Key Laboratory of Liaoning Province in Strong Electric-field Discharge, Environmental Engineering Institute in Dalian Maritime University, Dalian 116026, China;Key Laboratory of Liaoning Province in Strong Electric-field Discharge, Environmental Engineering Institute in Dalian Maritime University, Dalian 116026, China;Key Laboratory of Liaoning Province in Strong Electric-field Discharge, Environmental Engineering Institute in Dalian Maritime University, Dalian 116026, China;Key Laboratory of Liaoning Province in Strong Electric-field Discharge, Environmental Engineering Institute in Dalian Maritime University, Dalian 116026, China;Key Laboratory of Liaoning Province in Strong Electric-field Discharge, Environmental Engineering Institute in Dalian Maritime University, Dalian 116026, China |
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| Abstract: | With a physical method of strong electric-field discharge, O2 in air and H2O at gas state are ionized and dissociated into a number of activated particles such as·OH, O+2, H2O+, etc, which are injected into a part of ballast water to form the dissolved·OH. High concentration of·OH solution was injected into the main pipe of discharge ballast water to effectively and fast kill the oceanic harmful organisms and bacteria in the course of conveying ship's ballast water. In the 10 t·h-1 experimental system of ship's ballast water, the experiments were carried out for killing the plankton and bacteria using·OH radicals. The·OH concentration is 0.65 mg·L-1 for 100% killing efficiency. At the same time, cell morphology changes of Chaetoceros muelleri and Nitzschia closterium were observed by a microscope. The cells of algae in their cellular wall, cellular membrane or cell protoplasm were greatly destroyed using·OH radicals. |
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| Keywords: | strong electric-field discharge ·OH radicals ship’s ballast water oceanic algae killing |
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