부산대학교 도서관

The environmentally novel method of wastewater and effluent purification from heavy metal ions, utilizing home-made food waste bioadsorbent was studied. The initial concentration of heavy metals/metalloid such as Arsenic, Cadmium, Cobalt and Lead in the untreated effluents and treated by citrus peel (Grapefruit/orange and sour lemon peels) which treated by 2% coffee waste beans were analyzed. After especial times : 48, 72 hours and 1 and 2 weeks (by/ without stirring), final concentration of heavy metals in effluent samples were analyzed using Inductively Coupled Plasma Optical Emission Spectroscopy. Batch adsorption experiments were carried out to evaluate the effects of adsorbent-dosage, contact time and ionic strength of solution on the adsorption of heavy metals onto bio-adsorbent that was simply gathered from household-food waste at room temperature and then dried at 80 C 0 and grind to specify sizes. The results revealed that the adsorbent content and percentage in the studied effluent solution played a major role in adsorption. The potential of adsorptive amount of Cd2+ in presence of biomass after 48 hours removed 98.9% and 100% removed the initial contents of Lead after 72 hours by stirring the waste water which shows efficiently, and environmentally method of purification of aqueous. Current study indicates that home-made wastes which are commercially available can be considered as an efficient adsorbent for removing toxic heavy metals in this novel method. [ABSTRACT FROM AUTHOR]