Document Type : Research Paper

Authors

• Hadi Poorbagher ¹
• Soheil Eagderi ¹
• Mohammad Harsij ²
• Amir Hossein Hamidian ³

¹ Assistant professor, Department of Fisheries, Faculty of Natural Resources, University of Tehran, Karaj, Iran

² Assistant professor, Department of Natural Resources, University of Gonbad Kavoos, Gonbad Kavous, Iran

³ Assistant professor, Department of Environment, Faculty of Natural Resources, University of Tehran, Karaj, Iran

Abstract

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.

Keywords

• Activated carbon
• ammonia
• Density
• zeolite