scholarly journals A Changeable Lab-on-a-Chip Detector for Marine Nonindigenous Microorganisms in Ship’s Ballast Water

Micromachines ◽  
2018 ◽  
Vol 9 (1) ◽  
pp. 20 ◽  
Author(s):  
Myint Maw ◽  
Xinxiang Pan ◽  
Zhen Peng ◽  
Yanjuan Wang ◽  
Long Zhao ◽  
...  
Keyword(s):  
Ballast Water ◽  
Lab On A Chip ◽  
Ship’S Ballast Water

Studies of the Effect of Hydroxyl Radicals on Photosynthesis Pigments of Phytoplankton in Ship's Ballast Water

2004 ◽  
Vol 7 (2) ◽  
Author(s):  
Zhitao Zhang ◽  
Mindong Bai ◽  
Xiyao Bai ◽  
Bo Yang ◽  
Mindi Bai ◽  
...  
Keyword(s):  
Hydroxyl Radical ◽  
Hydroxyl Radicals ◽  
Ballast Water ◽  
Experimental System ◽  
Marine Species ◽  
Pilot Scale ◽  
Invasive Marine Species ◽  
Ship’S Ballast Water

AbstractA 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 OH· 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 ~ 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.

scholarly journals Analysis of Ballast Water Treatment Technologies on Ships Operating in the Baltic Sea Region

2020 ◽  
Vol 8 (1) ◽  
pp. 15-20
Author(s):  
Renāte Kalniņa ◽  
Alise Romule
Keyword(s):  
Baltic Sea ◽  
Ballast Water ◽  
Aquatic Organisms ◽  
Water Control ◽  
The Baltic Sea ◽  
Baltic Sea Region ◽  
Treatment Technologies ◽  
Control Technologies ◽  
The Baltic ◽  
Ship’S Ballast Water

AbstractThe introduction of invasive aquatic species in new environments has been identified as one of the four biggest threats to the world's oceans causing serious threats and harm to both ecology and human health. There is a major exchange of ship’s ballast water over longer distances between continents and regional seas, and it has been known for decades that ballast water transfers organisms to new ecosystems, where the strongest, most aggressive and adaptable species can survive and become invasive under favourable conditions. The focus of the research is to study available ballast water control technologies to determine their suitability and effectiveness in the reduction of harmful aquatic organisms and compounds in the Baltic Sea.

scholarly journals IMPACT OF SHIP'S BALLAST WATER ON INVASIVE SPECIES OCCURRENCE, AND AS A CONSEQUENCE ON ENVIRONMENTAL AND PUBLIC HEALTH: A SHORT REVIEW

2020 ◽  
Vol 36 (1) ◽  
pp. 18-21
Author(s):  
A. Kholdebarin ◽  
N. Mozaffari ◽  
V. Vambol ◽  
S. Vambol ◽  
N. Mozaffari
Keyword(s):  
Public Health ◽  
Invasive Species ◽  
Ballast Water ◽  
Water Pressure ◽  
Ecological Impacts ◽  
Nutrient Cycle ◽  
Species Occurrence ◽  
Study Results ◽  
The Impact ◽  
Ship’S Ballast Water

Water is one of the main ways of transportation. The reduction of water pressure on the ship hull, controlling ship submergence, compensate for the impact of losing weight from fuel or water consumption, help to the existence of lateral balance and stability are the factors that show all ships need ballasting. Ballast water contains a large number of organisms from different species, which are in different life stages (egg, Larvae, Cysts, Spores, or adult). These aquatic invasive species cause damage to fisheries, aquaculture, water supply system, industrial infrastructure, biodiversity, and habitat. The study aims to review open information sources and analyze them to identify the Impact of ship's ballast water on invasive species occurrence, and as a consequence on environmental and public health effects. The search for sources was carried out for the keywords «ballast water», «ecology», «environment», «public health» and «invasive species», as well as for various combinations of these words through the Google Scholar. Restrictions in the search for sources amounted to: since 2005 and in relevance. The features of one of the reasons for the spread of invasive species and negative environmental consequences for aqua systems and public health are studied. The study's practical value lies in the fact that the study results can be used to train workers from water transport and ensure the environmental safety of aqua systems. Predation, parasitism, competition, the introduction of new pathogens, genetic changes, habitat alterations, species shift, and loss of biodiversity are the most important ecological impacts. Exotic species, which are often brought with ballast water, cause change to ecosystem function by changing in a nutrient cycle and a decrease in water quality. It is established that some invasive species including Vibrio Cholera and Giardia duodenalis that are transported by ballast water also affect the public health by increasing the risk of pathogens and parasitism.

Naphthoquinones as broad spectrum biocides for treatment of ship's ballast water: Toxicity to phytoplankton and bacteria

2007 ◽  
Vol 41 (6) ◽  
pp. 1294-1302 ◽  
Author(s):  
D.A. Wright ◽  
R. Dawson ◽  
S.J. Cutler ◽  
H.G. Cutler ◽  
C.E. Orano-Dawson ◽  
...  
Keyword(s):  
Broad Spectrum ◽  
Ballast Water ◽  
Water Toxicity ◽  
Ship’S Ballast Water
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