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http://dx.doi.org/10.7837/kosomes.2020.26.7.858

Feasibility of Activated-Carbon Adsorbent to Sequester Sunken Hazardous and Noxious Substances (HNS)  

Choi, Ki-young (Korea Institute of Ocean Science and Technology)
Kim, Chang-joon (Korea Institute of Ocean Science and Technology)
Kim, Hye-eun (Korea Institute of Ocean Science and Technology)
Jung, Jun-mo (Department of Oceanography, Pukyong National University)
Hwang, Ho-jin (Korea Research Institute of Ships & Ocean Engineering)
Lee, Moonjin (Korea Research Institute of Ships & Ocean Engineering)
Publication Information
Journal of the Korean Society of Marine Environment & Safety / v.26, no.7, 2020 , pp. 858-863 More about this Journal
Abstract
We experimented with the particle-settling velocity and CHCl3 absorption efficiency of seven activated-carbon and analyzed seven heavy metal contents by elution for application to the field treatment of sunken HNS on the marine seabed. The mean particle-settling velocity was in the range 0.5-8 cm/s, except when the 8-20 mesh was used. The larger the HNS particle, the faster the particle-settling velocity was, and the CHCl3 absorption efficiency increased considerably owing to the larger surface area. In addition, the elution test results showed that the total Zn and As contents in >100-meshed activated carbon was higher than the contents criteria for the standard for water-treatment agents, and Cr, Zn, and As were released at higher concentrations than those released by other activated-carbon groups. Taken together, the CHCl3 absorption efficiency, settling velocity, and elution test results suggested that the 20-60, 20-40, and 2mm&down mesh activated-carbon adsorbents could be applied to the field treatment of HNSs and that the minimum required amount for field treatment were 0.82, 0.90, and 1.28 ton/㎘, respectively, as calculated based on the HNS-adsorption-capacity priority.
Keywords
Sunken HNS; Absorbent; Activated Carbon; On-site treatment; Lab-scale test;
Citations & Related Records
Times Cited By KSCI : 5  (Citation Analysis)
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