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Journal : Makara Journal of Science

Adsorption of Cu(II) Ions from Aqueous Solutions using a Magnetite Biochar Composite Material Ta'bi, Widi Aprilia; Taba, Paulina; Wahab, Abdul Wahid; Gappa, Maming; Zakir, Muhammad; Permatasari, Nur Umriani
Makara Journal of Science Vol. 29, No. 3
Publisher : UI Scholars Hub

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Abstract

Water contamination from heavy metals, such as Cu(II) ions, poses severe threats to human health and the environment. This necessitates the development of efficient and eco-friendly treatment methods. In this study, a magnetite–biochar composite (MBC) was developed as an effective adsorbent for reducing Cu(II) ions from liquid waste. Biochar was produced through the pyrolysis of water hyacinth at 500 °C, while magnetite was synthesized using FeSO₄·7H₂O and FeCl₃·6H₂O with molar ratio of 1:2. The MBC was formed using a co-precipitation method and characterized by Fourier transform Infrared (FTIR) spectroscopy, X-ray diffraction (XRD), Brunauer–Emmett–Teller, and vibration sample magnetometer instruments. FTIR analysis confirmed the presence of Fe–O bonds, and XRD detected Fe₃O₄ peaks, confirming the successful integration of magnetite into the composite. The MBC exhibited a surface area of 72.54 m²/g and a saturation magnetization of 19.10 emu/g. Optimal Cu(II) ion adsorption occurred at pH 6 and a contact time of 60 min. Adsorption kinetics followed the pseudo-second-order model, and isothermal analysis aligned with the Sips model, indicating an adsorption capacity of 75.73 mg/g. These results demonstrate MBC’s excellent potential as a sustainable and effective adsorbent for treating Cu(II)-contaminated wastewater, offering an environmentally friendly solution to heavy metal pollution.
Co-Authors Abd. Karim Abdul Karim Abdul Muiz Amir, Abdul Muiz Abdul Rahim Muhammad Abdul Wahid Wahab Abdur Rahman Arif, Abdur Rahman Abshor Marantika Ade Irma Suryani Affan, Fajar Amalia, Nala AMELIA, NUR Anisa Anisa Anna Islamiyati Arfah, Rugaiyah Arfah, Rugaiyah A Arfah, Rugaiyah Andi Arman Arman Armus, Rakhmad Asih Handayani, Sri Baso Pallawagau Bustanur, Bustanur Candra, Filtra Delia, Dwi Anisa Despira, Despira Dianti, Ratna Diany Mairiza Djabal Nur Basir Djabal Nur Basir Eka Anggriani Odja Erlinda Yurisinthae Faiq Ainurrofiq Fatira Wahidah, Fatira Fauziah, St Firman, Nur Faiizah Aqiilah Fitriyana, Rinda Fuad Fathurahman, Achmad Gani Rachim, St. Annisa Gappa, Maming Gusrini, Wike Hasnah Natsir Hidayat Hidayat Indah Raya Irmawanti, Irmawanti Kamalin, Muhammad Kolo, La La Kalamu, La Yusran Lismawati, Lismawati Lubis, Haniah Mahandika, Diani Maini, Nur Maming Maming Maming Mardianti, Riska Mardiyah, Suci Maswati Baharuddin Mifta Hasda Mohd. Winario Muhammad Nadir Muhammad Syaipudin Munandar, Nurharis Novriavani, Novriavani Nunuk Hariani Soekamto Nur, Rahman NURAENI, ANDI Nurmaini Nurmaini Nursiah La Nafie Paulina Taba Permatasari Hasra, Adji Permatasari, Nur Umriani Prastawa Budi Putra, Muhammad Nanda Dwi Putri, Berliana R, Irwan Rahmawati, Rahmawati Ratna Ratna Rella, Sindiy Amay Ridhwan Rifqil Khairi Rima Meilita Sari Rinaldi Rinaldi Rinda Fithriyana Romus, Mahendra Rusnaenah, Andi Saefullah Sari, Efti Novita Sari, Ummi Saru Reza Seniwati Dali Sirajang, Nasrah Siswantari Pratiwi Sitti Rahmah St Fauziah, St Fauziah St. Fauziah Sumarni, Sitti Syaharuddin Kasim Syamsiar, Syamsiar Syamsuriyanti Syarifah Aeni Rahman Ta'bi, Widi Aprilia Tamrin Tamrin Urfan, Faiz Usrah, Muhammad Jayzul Wahyu Febri Ramadhan Sudirman Wahyuti, Wahyuti Yoly, Zafia Sarina Yuniantoro, Yuniantoro Yusafir Hala Zubaidah Assyifa