| dc.description.abstract | This study detected the nitrogen compounds removal in aquaculture wastewater by using Neptunia oleracea and Cyperaceae alternifolius. Four experiments in duplicate were set up and distributed in control, Neptunia oleracea, Cyperaceae alternifolius and combine experiments. The following analyses were measured every ten days: nitrite, nitrate, ammonia, total nitrogen, total carotenoid and number of cell.
After 20 days, for Cyperaceae alternifolius, nitrite concentration was reduced by 76% (5 to 1.2 g/mL), nitrate concentration by 17% (37.8 to 31.5 g/mL). For Neptunia oleracea and combine two plants, nitrite reduced 41% and 73%, respectively, and nitrate reduced 27% and 21%, respectively. For Amonia and total nitrogen, there were no different between plants experiments compare with control. After 20 days, total carotenoid concentration and number of cell increased in three plants experiments, while remained stable in the control experiment. There was clear that plants producing better micro-environment for algae growth. Number of cell increased in three plants experiments. It provided that plants contributed the increasing in number of cell; because of divert microorganism in rhizosphere. The result indicated that Cyperaceae alternifolius could absorb nitrite and nitrate better than Neptunia oleracea, and two plants could not enhance the absorption of nitrite and nitrate than individual in aquaculture wastewater.
Keywords: Neptunia oleracea, Cyperaceae alternifolius, combine two plants, nitrite, nitrate, ammonia, total nitrogen, total carotenoid, number of cell | en_US |
