Examination of heavy metals contamination in drain, farm water and Nile tilapia (Oreochromis nilotius) in EL-Fayoum Government, Egypt and use some methods for treatment

Abstract

This study was carried out at three different farms in EL-Fayoum Government and at  three different drainages poured into it. The study included determination of some  physical and chemical parameters of water and detection of five heavy metals (Zn,  Cd, Pb, Fe and Cu) in Farm and drains water. The accumulation of these heavy  metals in different fish organs (Gills, Skin, Muscles and Liver) in fish from different  farms and fish from different drains, plant, sediment and diet also measured. The  results showed that, Iron more accumulated than other in all three different drains  and farms under study except accumulated of these heavy metals in Nile Tilipia fish  blood results showed Zinc more accumulated than other. Water treatment by using low adsorbant (Eggplant and Pumpkin) to removal these heavy metals detected  that, Pumpkin was good for treating Zn and Pb the maximum removal for Zn was  65% and for Pb the value was 50%. While Eggplant was good for treating Fe, Cd and  Cu with maximum values (88%,78% and 77% respectively). Also the study included  investigation of some biochemical blood parameters such as Urea, Creatinine, RBS,  and T3,T4,TSH,GH and Cortisol hormones that showed a significant increase of levels  Mean value ± S.D of RBS, a significant decrease of levels Mean value ± S.D of  creatinine addition a significant increase of levels Mean value ± S.D of cortisol ,GH  and T3 in both Locanda and EL-Bats farms when compared with EL Galini farm.