Abstract
Ammonia is an important nutrient in primary production, but high ammoniaconcentration is directly or indirectly toxic to many species of aquatic organisms.Ammonia and other toxic metabolites can be managed by adsorption and ionexchange. Zeolite is naturally occurring structured, aluminosilicate with highcation exchange and ion adsorption capacity. The purpose of this study was todetermine the effects of zeolite on the ammonium adsorption at different particlesizes (0.075 mm, 3-5 mm) and adsorbent dosages (5 g/l, 10 g/l, 15 g/l) fromaquatic solution. This research was conducted by trial groups with 3 repetitionsduring 330 min. Water temperature, pH, dissolved oxygen and ammonium valueswere measured during the trial period at regular intervals. Depending on therelevant literature, TAN (Total Ammonium Nitrogen) and adsorption efficiencywere also calculated. This study values showed a decrease of TAN concentrationin all the groups with increasing contact time. For different particle size andadsorbent dosage of zeolite, the best efficiency (44.1%) is determined at added 15g/l and 0.075 mm zeolite group (P˂0.05). Our results revealed that zeolite mightbe used for ammonia removal in aquaculture.
Highlights
Provision of water quality for aquarium and recirculating aquaculture systems is a necessary process
Material and Methods Natural zeolite which was used in the present study proved that zeolite was an excellent adsorbent for ammonium removal from wastewater
When the data obtained in this study were evaluated, it was found that the amount of ammonium removal by zeolite increased with decreasing adsorbent size and increasing adsorbent dosage in treatment
Summary
Provision of water quality for aquarium and recirculating aquaculture systems is a necessary process. One of the most important water parameters to be controlled for aquaculture is nitrogen compounds. In water, it creates inorganic compounds, mainly nitrate, nitrite, and ammonium ions. Nitrogen compounds are essential for the continuity of living organisms because nitrogen is one of the basic building blocks of living organisms. The presence of excessive amounts of nitrogen ions in different forms causes adverse effects on the ecosystem, as a result, damage or even kill the health of human and aquatic organisms (Gierak and Lazarska 2017). Şahin et al 2019 - LimnoFish 5(2): 136-141
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