Abstract.Sea water aquaculture based on sea naturally led to increased the concentration of components caused by the excretion of waste nitrogen from sea animals. Cause those rotten followed aim in this study to solve these problems by means of the study of biological adsorption ability of nitrogen of algae a bunch of grapes. (CaulerpalentilliferaJ. Agardh) by using sea water and waste water from the pond fish, Fisheries Research Station Sriracha Chonburi province the date. 10-5 April 2558 by divided into 2 step by step when 1 study the adsorption capability ไนโตรเจนของ seaweed grape in seawater when 2 study the adsorption efficiency of algae a bunch of nitrogen in waste water from dairy group clownfish Fisheries Research Station completed by one step use. The size of 4 L holds water 3 liters of 3 dresses 1 don't put seaweed (control) series 2 put a bunch of algae group were also analyzed 3 G ammonia nitrogen and nitrate nitrogen before and after the experiment 3 day was ว่าใน experiments when 1 adsorption efficiency of nitrogen yield as follows: in each series experiments. The adsorption of nitrogen of each experiment results as follows 13.9433 edge, edge and 0.0617 16.8270 0.0029 15.7911 edge 0.0183 thermal g-at N / L / at N / L / g fresh น้ำหนักสาหร่าย / day. The results showed that the algae grapes can also better treatment nitrogen in water with high quantity of minerals and effective treatment in a short period of time from this research will lead to check. Development research study efficiency of water quality of freshwater algae to prepare a filter system น้ำใน aquarium cartoon.
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