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Journal : Communications in Science and Technology

Photocatalytic degradation of methylene blue and Congo red dyes from aqueous solutions by bentonite-Fe3O4 magnetic Riyanti, Fahma; Hasanudin, Hasanudin; Rachmat, Addy; Purwaningrum, Widia; Hariani, Poedji Loekitowati
Communications in Science and Technology Vol 8 No 1 (2023)
Publisher : Komunitas Ilmuwan dan Profesional Muslim Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21924/cst.8.1.2023.1007

Abstract

This study describes the co-precipitation synthesis of magnetic bentonite-Fe3O4 for photocatalytic degradation of methylene blue and Congo red pigments under visible light. Bentonite-Fe3O4 composites were produced using the mass ratio of 2:1 and 1:1 for bentonite to Fe3O4, respectively. X-ray Powder Diffraction (XRD), Fourier Transform Infra-Red (FTIR), BET surface area, Vibrating-Sample Magnetometer (VSM), Scanning Electron Microscopy with Energy Dispersive Spectroscopy (SEM-EDS), and Ultraviolet–Visible Diffuse Reflectance Spectroscopy (UV DRS) were used to characterize the materials. The bentonite-Fe3O4 (1:1) composite exhibited a greater surface area in comparison to the bentonite-Fe3O4 (2:1) composite with a measured value of 106.6 m2/g. It is a superparamagnetic material with a band gap of 2.25 eV and a saturation magnetization of 69.64 emu/g. The photocatalytic degradation of dye using bentonite-Fe3O4 (1:1) with the initial dye concentration of 25 mg/L, volume of 50 mL, catalyst dose of 0.05 g/L, addition of 3 mL H2O2, and 90 minutes of visible irradiation resulted in 94.34% and 98.45% degradation efficiency of methylene blue and Congo red dyes, respectively. The study determined that the most favorable pH for the photocatalytic degradation of methylene blue was pH 11, whereas the optimal pH for Congo red was found at pH 5. For methylene blue and Congo red dyes, photocatalytic degradation followed pseudo-first-order with the constant rates of 0.0356 min-1 and 0.0348 min-1, respectively. After five cycles of use in the photocatalytic process, the catalyst's degradation efficiency fell into below 5%. This research demonstrated that catalysts could be utilized in wastewater treatment technology.
Co-Authors A, Yuliana A.A. Ketut Agung Cahyawan W Addy Rachmat Aditya Dwi Saputra, Aditya Dwi Agus Dwiyanto, Agus Agus Mulyanto Agus Sunaryo Agustiarini, Vitri Ahmad Shalahuddin, Ahmad Ajusta, A.A Gede Al Muttaqii, Muhammad Alfiah, Mila Ali Munawar Alputri, Misella Amsal, Amsal Anandyawati, Anandyawati ANDINI NURWULANDARI Ani Kurniawati Aprilliani, Siti Apriyati, Nur Aquastini, Dwinita Ardi Nugroho Yulianto Aries Sulisetyono Ariesta, Rizky Chandra Arif, Fathan Arif, Taufan Aripah, Aripah Arman Jaya Aroyani, Ida Asif Aunillah Asri, Wan Ryan authoria, Nila Awaloedin, Dipa Teruna Awaludin, Dipateruna Teruna Azfa, Muhamad Badruzaman, Dudi Bimantara, Raga Budiharjo, Aziz Afandi Cahyaningrum, Nilam Dwi Chakim, Lutfi Daud, Ilzar Dede Abdurohman, Dede Dedi Pardiansyah Desi Marlina Dewi Puspaningtyas Dewi, Widya Candra Dian Ardiansyah Dian Saputra Dibyo Pranowo Dini Safitri Djaafar, Tjitrowati Djatmiko, Rudi Djumala Machmud, Djumala Doni, Rachma Dwipayana, Hendra DWITAMA, ADITYA Efendi, Suryono Endah Mayasari Ending Solehudin Erna Listiana Estrella, Estrella Evi Mufrihah Zain Fadli, Roni Fahma Riyanti Fauzan, Rizky Fazilet, Nurzini Fazriah, Siti Ferdian, Irwan Fitri Hadiah Fitriani Fitriani Fitriani, Indria Gusmara, Herry Hadistia, Ananda Hafita, Yuniar Ayu Hardianti, Rinda Harry Setiawan Harsono, P. Hartanti, Rezkiah Hasan Hariri Hasyim, Ruslan Helling, Lidya Salvina Herison, Catur Hermansyah Hermansyah Hermansyah, Yus HESTI PUJIwATI Hesty Anita Kurniawati Himmawan, Didik I Ketut Aria Pria Utama I. K. Suastika Ida Nurlaeli, Ida Idris, Irfandi Iis Aisah, Iis Iis Nurasiah Ikhsan, MT. Hartono Ikram Yakin Imas Masturoh Inang, Inang Indah, Susi Puspita Indra Cahyadinata, Indra Iqbal Caesariawan, Iqbal Irawan, Ikbal Irianti, Risda Irma Setyawati Irwan Hermawan Ismanto, Budi Isnurrini hidayat, Isnurrini Iwan Setiawan Jaih Mubarok Jubaedah, Dedah Kartika, Rizky Kurniawan Kurniawan Lestiyadi, Ayu Puspa Lukito, Cristine Prestarika Lydia Salvina Helling Lyesmaya, Dyah M. Irfani Hendri M. Kurniawan, M. Maharani, Evita Maharani, Tri Adinda Mahendra, Faisal Eka Malaysia, Emi Marbun, Maja Pranata MARIA BINTANG marlia, rina Marumpe, Dody Pratama Marwanto Marwanto, Marwanto Maryana, Roni Mashun, Mashun Maulana, Muhammad Al-Fayyad Merakati Handajaningsih Meryati, Meryati Mohammad Sata, Mohammad Rafi'i Muhammad Arif Ridwan, Muhammad Arif Muhammad Faizal Muhammad Hendri MUHAMMAD SAID Mukhlas, Oyo Sunaryo Mun'im, Zainul Mustafa Nakashima, Mhika Nasihin, Nasihin Nasirudin, Ahmad Nasrudin, Muhamad Nastia, Silfani Devi Nia Kurniadin Nino Rinaldi Nisa, Nelisa La Noradin, Muhammad Farhan Bin Mat Novia Novia Nugroho, Ardi Nuning Haryati Nur Hidayah Nuraeni , Dian Zahra Nuralam, Ihsan Nurhayati, Yanti Nurishlah, Laesti Nurjanah, Nenden Indah Nursalim Nursalim NURUL AZIZAH Ohorella, Hayat Marwan Padlurrahman, Padlurrahman Padri Achyarsyah Panigfat, Fahrudin Pertiwi, Risa Sari Poedji Loekitowati Hariani Pradini, Gagih Pramono, Dwi Agung Prasetyo Prasetyo Prastio, Bagaskoro Dwi Pratama, Anggara Yudha Purwatingningsih, Purwatingningsih Putra, Erzad Iskandar Putra, Rivanda Tyaksa Putri Dina Mardika Rahayu, Ajeng Dwi Rahmawati, Ery Rahmawati, Rahmawati Ramadania Ramadania, Ramadania Ramadhani, Hanif Fariz Ramadina, Haliza Nur Ratnawaty Marginingsih Rezeki, Eksa Tri Rijal Anshori, Arif Risa Wati - AMIK BSI Tasikmalaya Risa Wati - AMIK BSI Tasikmalaya Riwandi Riwandi, Riwandi Rizal Akib Rosa, Andrea Grech La Royani, Rona Aji Oktario Rudiansyah, Ahmad Rumalean, Anawia Rustikawati Rustikawati Safira, Nadia Safitri, Ronika Kris Saharudin Saharudin Said, Erpin Salahuddin, Ahmad Salma Yunia Rachmah, Ade Sari, Zahra Apriantika Ardi Sariono, Endro Setyawan, Dony Setyorini, Dini Shabri Indra Suryalfihra Simanjuntak, Ls Hari Candra Siska, Elmira Sowiyah Sowiyah Sri Rejeki Wahyu Pribadi Srianah Amir, Hasbiyah Suaidi Suaidi, Suaidi Subagyo, Indro Sugiono, Edi Suharjo, Usman K.J. Suharjo, Usman Kris Joko Sujantoko Sujantoko Sulaeman, Tatang Sulistiono, Agus Sumarlin, Denden Sumarta, Ryan Puby Suryani Dahniati Sutrisno, Tedy Tahwoto, Lia Pundhi Taryono, Taryono Teguh Hidayat Iskandar Alam Teuku Beuna Bardant Tirmidzi, Achmad Tunjung Pamekas, Tunjung Uluelang, Kris Undang Rosidin Utama, Danu Utami, Kartika Vanturini, Alyi Vitriyan Espa Wael, Ahmad Wahyudi, Endang Wasis Dwi Aryawan Widia Purwaningrum Widyasasi, Dyah Wijanarko, Andi Winda, Hyasinta Wiwik Widiyanti, Wiwik Wulandari, Rizma Yanti, Vera Hari Yofi, Yofi Yudhy Harini Bertham, Yudhy Harini Yudiyanto, Mohamad yunian, rizki wahyu Yusuf, Ade Zaenudin, Ridwan Zain, Muhammad Fuad