Studies of the effect of hydroxyl radicals on photosynthesis pigments of phytoplankton in ship's ballast water

被引：2

作者：

Zhang, ZT ^{[1
]}

Bai, MD ^{[1
]}

Bai, XY ^{[1
]}

Yang, B ^{[1
]}

Bai, MD ^{[1
]}

Zhou, XJ ^{[1
]}

机构：

[1] Dalian Maritime Univ, Inst Environm Engn, Key Lab Strong Elect Field Ionizat Discharge Liao, Dalian 116026, Liaoning, Peoples R China

来源：

JOURNAL OF ADVANCED OXIDATION TECHNOLOGIES | 2004年 / 7卷 / 02期

关键词：

ship's ballast water; strong dielectric barrier discharge; hydroxyl radical; photosynthesis pigment;

D O I：

暂无

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

A pilot-scale system of 20 t/h for the treatment of ship's ballast water and the setup of dissolved hydroxyl radical was introduced in this paper. With this experimental system, the kill efficiencies of bacteria, mono-algae, protozoan reach 100% within 2.67 s when dissolved OR concentration is 0.6 mg/L. At the same time, the effect of hydroxyl radicals on the photosynthesis pigments of phytoplankton was done. The results indicate that the contents of chlorophyl-a, chlorophyl-b, chlorophyl-c and carotenoid are decreased to 35 similar to 64% within 8.0 s further to the lowest limit of test after 5 min. When dissolved OH. ratio concentration is 0.68 mg/L, the attenuation efficiencies of photosynthesis pigment are 100%. Therefore the invasive marine species can be killed in the process of the inputting and discharge ship's ballast water.

引用

页码：178 / 183

页数：6

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