| Title |
Red tide Removal by Alginic acid |
| Authors |
윤종섭 ( Yun Jong Seob ) ; 김승현 ( Kim Seung Hyeon ) ; 윤조희 ( Yun Jo Hui ) |
| Keywords |
alginic acid; red-tide; diatom; flagellate |
| Abstract |
Feasibility of using alginic acid for red-tide removal was investigated in this study. Ammonium-calcium salt form of alginic acid was used instead of free acid form because this caused less pH decrease. This study found that alginic acid was more effective than loess in red-tide removal. This was related to the removal mechanism. Microscopic examination showed that loess removed red-tide through adsorption. while alginic acid achieved the removal through floc formation. Using alginic acid together with loess could not degrade red-tide removal efficiency. The combined use resulted in 10% improvement of the removal Compared to use of alginic acid alone. The combined use is expected to make alginic acid more economically feasible. Red-tide removal efficiency was different depending upon species. Flagellate was easy to remove than diatom. This was realted lo the Shape. Flagellate has a sphere-like shape. Red-tide density also affected the removal. Higher density resulted in better removal efficiency. |