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KMID : 1024520090180101065
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Journal of the Environmental Sciences
2009 Volume.18 No. 10 p.1065 ~ p.1070
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Experimental Design in Laboratory for Ecological Restoration in the Slag Dumping Area
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Kim Jin-Man
Kwak Nam-Seok
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Abstract
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Experimental design for ecological restoration approach was investigated from the P’ company’s slag dumping
area with higher pH value. The degree of pH recovery was measured by the injection of carbon dioxide
from the LNG exhaust gas, and the residual carbon, for example, calcium and carbonate which can be controlled
by artificial seaweed beds. The degree of adaptability from 3 algaes (Undaria pinnatifida, Sargassum horneri
and Ecklonia stolonifera) and uptake nutrient function of Ecklonia stolonifera chosen in the first treatment
were measured in the laboratory to determine the transplanting algae in artificial seaweed beds. The higher
value of pH was decreased to 7.0∼8.5 by injection of LNG exhaust gas with flow rate 20 m3/min. In the
experiment design at laboratory, the upper part of frond of Undaria pinnatifida and Sargassum horneri began
to decay, and the color changed after 10 days. However, those of Ecklonia stolonifera were after 14∼20 days.
The uptake rate of nutrient from Ecklonia stolonifera was higher than those of other algaes, and those was
similar pattern in the control (e.g. seawater); The DIN concentration uptake of Ecklonia stolonifera was 1.88
㎍/L/hr avg. in leachate, but 2.19 ㎍/L/hr avg. in seawater. However, the PO4
3-P concentration uptake was
0.18 ㎍/L/hr avg. in leachate, but 0.31 ㎍/L/hr avg. in seawater. These result indicated Ecklonia stolonifera
uptaked these nutrients in the leachate as well as in seawater, and it may suggested for this species to transplant
for constructing artificial seaweed beds.
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KEYWORD
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Experimental design, Ecological restoration, Slag dumping area, pH value, Ecklonia stolonifera, Artificial seaweed beds
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