Characterization of bottom sediments from Osaka Bay,Japan |
| |
| Authors: | S Tokunaga A Hoshika H Tatsumoto |
| |
| Institution: | (1) Department of Chemical Systems, National Institute of Materials and Chemical Research, 1-1 Higashi, Tsukuba, 305 Ibaraki, Japan;(2) Chugoku National Industrial Research Institute, 2-2 Hirosue Hiro 2-Chome, Kure, 737-01 Hiroshima, Japan;(3) Faculty of Engineering, University of Chiba, Yayoicho Inageku, 263 Chiba, Japan |
| |
| Abstract: | The physical, chemical, and dewatering characteristics of 19 bottom sediments from Osaka Bay, Japan, have been analyzed to aid in the development of sediments in the coastal bay area. The sediments in the east near Osaka Port were highly polluted from the influence of human activities and were difficult to dewater. These sediments were composed of fine particles, low in pH, zetapotential, and initial settling rate, and were high in ignition loss, metal concentrations, compression volume, specific resistance, cake water content, and drying index. However, the sediments near Akashi Channel showed the reverse where they are affected by strong tidal current. A correlation analysis has been made of all the parameters. There are significant relationships between all the dewatering parameters. Therefore, sediments difficult to dewater by gravity settling are also difficult to dewater by vacuum filtration and solar evaporation. Sediments containing fine particles and pollutants are difficult to dewater. Several forms of pollutants can occur in the sediments. |
| |
| Keywords: | Marine sediments Osaka Bay Enclosed water area Dewatering characteristics Pollution Marine development |
| 本文献已被 SpringerLink 等数据库收录！ |
|
