• Journal of the Korean Applied Science and Technology
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• v.32 no.4
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• pp.685-693
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• 2015

In this study, we found that it is necessary to use the relatively new resource from seaweed extracts to extract and process pulp and create a local brand that can contribute to the local fishermen, development of new bio material, establishment of natural infrastructure, and acquisition of foreign investment. This study's seaweed pulp separation process is very overwhelming as seaweed is a compound of glycoside and polysaccharide. Nevertheless, we intend to develop a purification process and introduce applied technology to explore a new applied technology of pulp process. Once this technology is fully developed and mass produced, it would contribute to greater exports and increasing income level for the local fishermen. The ultimate goal of this study is to gather technical data from the first and second years of application, apply seaweed pulp to increase bio effect, and develop new functional bio-plastic packaging material, raw material, and samples with special characteristics of high molecules.

• Proceedings of the Korean Society of Soil and Groundwater Environment Conference
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• 2001.04a
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• pp.98-103
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• 2001

In order to understand the characteristics of leachate at the Seokdae municipal waste landfill in the Pusan city, the correlation between leachate pollution loading and volume of gas production. concentration of gas and subsidence of ground, the characteristical methos, geochemical analyses and laboratory column tests using samples of gases, leachate and surface soil of Seokdae waste landfill area. Through the analysis of water balance, leachate flow rate and pollution loading were estimated. Geistatistical analysis of four gas components ( $O_2$, C $H_4$, $H_2$S and CO) shows the possibility of ground subsidence around the group of a site with high concentration of gas. From geochemical analyses of leachate, EC and Total-Alkalinity of ground subsidence around the group of a site with high concentration of gas. From geochemical analysis of leachate, Ec and Total-Alkalinity were increased, and Cl, Cr, Mn, Cu, Zn, Cd and Pb were decreassed comparing to the part, and the type of water quality was Na-HC $O_3$ in trilinear diagram. It shows that biodecomposition of municipal wastes continues actively. From the analysis of water balance, the total leachate flow rate is about 465.11㎥/day and pure pollution loading of Cl, Mn and Fe are estimated to 223.8kg/day, 0.2kg/day, 0.3kg/day, respectively. The laboratory column test of residual soil and landfill soil shows 0.206cm and 0.019cm for linear velocity(equation omitted), 0.234 $\textrm{cm}^2$/min and 0.018$\textrm{cm}^2$/min for diffusion coefficient ( $D_{ι}$), and 1.136cm and 0.095cm longitudinal dispersion index ($\alpha$$_{ι}$), respective]y. It demonstrates that the delay time of contamination for residual soil is shorter than that of landfill soil.