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Journal : Communications in Science and Technology

Fabrication and characterization of fly ash-based geopolymer and its performance for immobilization of heavy metal cations Iqbal, Rendy Muhamad; Supriadi, Warih; Burhan, R.Y. Perry; Nurherdiana, Silvana Dwi; Hidayati, Ririn Eva; Subaer, Subaer; Bayuaji, Ridho; Fansuri, Hamzah
Communications in Science and Technology Vol 7 No 2 (2022)
Publisher : Komunitas Ilmuwan dan Profesional Muslim Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21924/cst.7.2.2022.868

Abstract

In this study, the geopolymer from fly ash as based-raw material has been examined on the ability of several heavy metal ions immobilization. The fly ash has been provided from PT IPMOMI which firstly analyzed the physical and chemical properties. Fly ash and heavy metals were mixed with an activator base until homogeneous, then cast into a cylindrical shape mold following ASTM C 39-86 and left for 7 days. After that, the geopolymer was characterized by SEM, FTIR, XRD, compressive strength test and TCLP. The diffractogram of PT. IPMOMI fly ash exhibited the existence of mullite, alumina and iron oxide phase, which were suitable with XRF result. From FTIR spectra, the vibration on finger print area appeared indicating the vibration of T-O-T from geopolymer network. The observation revealed that the addition of Pb2+ cations caused microcracking from SEM image and affected the compressive strength of the geopolymer. Sr2+ was an ion that was very easilyleached compared to other three ions, and it caused a weak interaction between Sr2+ and geopolymer network. The higher amount of metal ions into the geopolymer network reduced the compressive strength of geopolymer. Sr2+-geopolymer had a lower compressive strength compared to Pb2+, Cd2+, and Co2+.
Ultrafiltration membranes for dye wastewater treatment: Utilizing cellulose acetate and microcrystalline cellulose fillers from Ceiba Pentandra Abdullah, Romario; Astira, Dinia; Zulfiani, Utari; Rahmad Widyanto, Alvin; Rahmawati, Zeni; Gunawan, Triyanda; Kusumawati, Yuly; Hafiz Dzarfan Othman, Mohd; Fansuri, Hamzah
Communications in Science and Technology Vol 9 No 1 (2024)
Publisher : Komunitas Ilmuwan dan Profesional Muslim Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21924/cst.9.1.2024.1345

Abstract

Dye hurts the threat of human health problems and environmental pollution. Microcrystalline cellulose (MCC) based membrane is a good material to be used as an dye separation membrane for having the high hydrophilicity of the membrane. It has been successfully isolated from kapok (ceiba pentandra) with characteristic X-ray diffraction patterns and FTIR absorption peaks, which corresponded to the typical peaks of cellulose. The ultrafiltration membrane was made up of a cellulose acetate matrix created using the phase inversion method. Characterization results indicated that the inclusion of MCC derived from kapok led to a reduction in the contact angle from 65 to 52o, and an increase in membrane porosity from 82 to 85%. In the separation of dye, the composite membrane incorporating MCC filler demonstrated superior performance compared to the membrane lacking MCC, manifesting in an elevated water flux from 43 to 84 L/m².h and methylene blue (MB) rejection from 64 to 99%. The use of MCC as a filler in cellulose acetate membranes can enhance the characteristics and performance of the membrane in MB separation.
Efficient degradation of methyl orange through photo-Fenton processes with MIL-100(Fe) modified Fe\(_3\)O\(_4\) (Fe\(_3\)O\(_4\)@MIL-100(Fe)) catalyst Puspitasari, Melani Puji; Pratama, Jeesica Hermayanti; Nugroho, Roshid Adi; Lestari, Witri Wahyu; Kemala, Yusnadia; Saraswati, Teguh Endah; Fansuri, Hamzah; Mukti, Rino Rakhmata; Suharbiansah, Rujito S. R.
Communications in Science and Technology Vol 9 No 2 (2024)
Publisher : Komunitas Ilmuwan dan Profesional Muslim Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21924/cst.9.2.2024.1493

Abstract

The research successfully synthesized a composite MIL-100(Fe) modified Fe3O4 (Fe3O4@MIL-100(Fe)) catalyst and examined its efficiency in degrading methyl orange (MO) through the photo-Fenton process compared to Fenton. The different percentages of Fe3O4 were integrated into MIL-100(Fe) and their effects on material characteristics and degradation capabilities were studied. Ex-situ synthesis involved varying Fe3O4 weight ratios (3, 10, and 20% w/w). Characterization techniques confirmed the integration of Fe3O4 and MIL-100(Fe) and revealed changes in surface area, pore size, and thermal stability with Fe3O4 addition. Meanwhile, removal tests showed promising results with the photo-Fenton process exhibiting maximum efficiency (95.51%) using 10% Fe3O4@MIL-100(Fe). This study provides valuable insights into developing efficient photo-Fenton catalysts for environmental remediation, particularly for addressing dye pollution in wastewater by highlighting the potential of Fe3O4@MIL-100(Fe) composites in this context.
Co-Authors Abdul Munip Abdullah, Romario Achmad Otong Busthomi Adi Setyo Purnomo Afif Muamar Agung Muliawan Ahmad Rofii Ahyudia Malisa Ilham Aisah Aisah Al Mustaqim, Dede Amirul Mukminin Andriyani, Yani Anggaria Maharani Anita Karlina Arief Adhiksana Arief Firmansyah Arif Rahman Saleh Arvan Rahmanda Askur Rahman Astira, Dinia Aulia Indri Cahya Azaki Khoirudin Bahomaid, Saleh Abdoalgaader Ali Bambang Sudarmanta Bambang Sudarmanta, Bambang Bambang Wahyudi Cholifah Endah Royani Dahlan, Rahman Dani Hanif Rianto Dety Oktavia Sulistiono Devi, Serlina Oktavia Diah Kartika Sari Dian Farida Asfan Didik Prasetyoko Dinansyah Aditya Djoko Hartanto Djoko Hartanto Dong-ke Zhang Edy Setyawan Endang Purwanti Endang Purwanti Setyaningsih Enung Siti Nurhidayah Erliyanti, Nove Kartika Fadlan, Arif Fahimah Martak Faisal Farhanah Thalib Faridz Ravsamjani Fauziah, Difari Afreyna Gia Hung Pham Gunawan, Triyanda Gunawan, Triyanda Hadi Nur Hadi Nur Hafiz Dzarfan Othman, Mohd Hamdan Dwi Rizqi Harmami Harmami Hendiyani, Mesy Faridah Herdayanto Sulistyo Putro Hidayati, Ririn Eva Icha Sugiasari Imam Machali Iqbal, Rendy Muhamad Karim Budiono Kemala, Yusnadia Khalid, Khalisah Khoirul Hidayat Kusumawati, Yuly Lestari, Witri Wahyu Lia Harmelia Lia Rachmawati Lisdayana, Nurmalisa Lukman Atmaja Maria Ulfa Mariaty Ibrahim Maya Machfudzoh Merry Jhoe Stefanny Mohd Hafiz Dzarfan Othman Mohd Jumain Jalil Mojiono, M. Mojiono, Mojiono Muhamat Abdul Rohim Muhammad Amir Rudin Yusup Muhammad Arif Ramadhan Muhammad Rickyu Yudhistira Mukti, Rino Rakhmata Mutasim Billah Mu’tamar, M Fuad Fauzul Naimatul Khoiroh Naimatul Khoiroh Nandini , Atika Nandini, Atika Nasruddin Nasruddin Neneng Ayunanda Novia Dwi Permata Nugraha, Reva Edra Nugraheni, Zjahra Vianita Nugroho, Roshid Adi Nuni Widiarti Nur Ali Nurul - Widiastuti Nurul Widiastuti Oktavina Kartika Putri Perry Burhan, Perry Pratama, Jeesica Hermayanti Probowati, Banun Diyah Puspita, Diah Ayu Puspitasari, Melani Puji R. A. Syukuri Nikmah R. A. Syukuri Nikmah, R. A. R.Y. Perry Burhan, R.Y. Perry Rachmad Ramadhan Yogaswara Rachmad Ramadhan Yogaswara Raditia Vindua Rafli Azhari Ahmad Faisal Rahmad Widyanto, Alvin Rahmawati, Zeni Rakhmawati Rakhmawati Ratna Ediati Ratna Ediati Refdinal Nawfa Ridho Bayuaji Rieswana, Yuried Diilan S. Sugiharto S. Supriyanto Safira Habiba Nuhaa Sandra Wibawanta Sekarayu Dianing Putri Sigit Mujiarto Silvana Dwi Nurherdiana Silvana Dwi Nurherdiana Sintha Soraya Santi Stephen Maruli Tua Gultom Subaer - Suharbiansah, Rujito S. R. Supriadi, Warih Suri, Nabilah Atika Syafsir Akhlus Teguh Endah Saraswati Totok Trengginas Tri Ana Mulyati Tri Eddy Susanto Tri Esti Purbaningtias Vivi Zulaicha Wahyu Prasetyo Utomo Wasman Wasman, Wasman Wiwik Fitria Ningsih Yani Dahliani Yogaswara, Rachmad Ramadhan Zainab Ramli Zainab Ramli Zainab Ramli Zetra, Yulfi Zulfiani, Utari