نوع مقاله: مقاله پژوهشی
نویسندگان
1 استادیار گروه شیلات، دانشکدۀ منابع طبیعی، دانشگاه تهران، کرج، ایران
2 استادیار، گروه منابع طبیعی، دانشگاه گنبدکاووس، گنبدکاووس، ایران
3 استادیار گروه محیطزیست ، دانشکدۀ منابع طبیعی، دانشگاه تهران، کرج، ایران
چکیده
کلیدواژهها
عنوان مقاله [English]
نویسندگان [English]
Increasing the concentration of ammonia in water can cause fish death. This study was conducted to compare the performance of conditioned activated carbon and zeolite in ammonia (TAN = Total Ammonia Nitrogen) removal in a simulated transport of rainbow trout fry in 40-liter plastic bags. Hence, responses of zeolite and conditioned activated carbon in ammonia (TAN) removal at different concentrations of absorbents, i.e. 0, 5, 10 and 15 gl-1 and transportation times i.e. 12 and 24 hours and fry densities i.e. 20, 50 and 80 fry.bag-1 were compared, respectively. Both time and fish density had significant effect on TAN production (P<0.001). A significant difference was found between zeolite and conditioned activated carbon in TAN removal (P<0.001). The results obtained by zeolite were more satisfactory than activated carbon.
کلیدواژهها [English]