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    Aubergine-based Biosorbents for Heavy Metal Extraction
    (Bayburt Üniversitesi, 2022) Ramazanoğlu, Doğu; Mohammed, Zaman Adnan; Khalo, Idrees; Maher, Khalid
    In this study, an alternative inexpensive and eco-friendly Aubergine (Eggplant)-based biosorbents were synthesized for removing Cu2+, Ni2+, and Co2+ heavy metal ions from the aquatic region. Moreover, how the physical properties and water treatment performance were affected by their corn starch and oil contents were investigated. Their extraction capacity was evaluated by performing Flame atomic absorption spectroscopy (FAAS). ASTM D 792 standard was complied with to calculate biosorbent density. Indeed, the untreated eggplant stalk-based biosorbent adsorbed 5.36 mg of Co2+ ions and 4.99 mg of Ni2+ ions, and 4.84 mg of Cu2+ ions from 25 mL of initial solution that contained 7.00 ppm of each ion for 30 minutes, at room temperature with 175 rpm agitation speed by Eggplant-based biosorbents.
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    Valorizing Agricultural Waste: Synthesis of Pomegranate Peel-Derived Activated Carbon-Based Hybrid Composite for Sustainable Heavy Metal Removal
    (Atatürk Üniversitesi, 2023) Khalo, Idrees; Ramazanoğlu, Doğu
    The effective removal of heavy metals from water sources is of paramount importance due to their detrimental effects on the environment and human health. In this study, we present a sustainable approach to address this issue by valorizing agricultural waste in the form of pomegranate peel for the synthesis of an activated carbon-based hybrid composite. The pomegranate peel-derived activated carbon exhibited high removal capacities for Pb2+ and Ca2+ ions, with maximum elimination achieved at pH 7 within a pH range of 3 to 11. The adsorption process reached equilibrium in 30 minutes, resulting in remarkable removal efficiencies of 80.3% for Pb2+ and 74.3% for Cd2+. These findings highlight the successful synthesis and characterization of pomegranate peel-derived activated carbon as a promising and environmentally friendly solution for the sustainable removal of heavy metals, emphasizing the significance of agricultural waste valorization in mitigating water contamination.