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All Journal Indonesia Medicus Veterinus IPTEK The Journal of Engineering Biotropika Terampil : Jurnal Pendidikan dan Pembelajaran Dasar Eralingua : Jurnal Pendidikan Bahasa Asing dan Sastra JPI Proceedings of the 1st UR International Conference on Educational Sciences Pendas : Jurnah Ilmiah Pendidikan Dasar PEDAGOGIK : JURNAL PENDIDIKAN Transformatif Jurnal Farmasi Medica (Pharmacy Medical Journal) PMJ Jurnal Penelitian dan Pengabdian Kepada Masyarakat UNSIQ Ekspose: Jurnal Penelitian Hukum dan Pendidikan International Journal for Educational and Vocational Studies MULTINETICS Journal of English Education and Teaching (JEET) PROJECT (Professional Journal of English Education) Bio-Inoved : Jurnal Biologi-Inovasi Pendidikan Lumbung Farmasi : Jurnal Ilmu Kefarmasian Borneo Journal Of Pharmascientech Jurnal Pendidikan Bahasa Inggris Proficiency Griya Journal of Mathematics Education and Application Jurnal Riset dan Pengabdian Masyarakat Marketing Management Studies Riau Education Journal Fahima: Jurnal Pendidikan dan Kajian Keislaman Jurnal Cerdik: Jurnal Pendidikan dan Pengajaran Pharmaqueous Anoa: Journal of Animal Husbandry Journal of Education, Cultural, and Politics Media Didaktika Natural Science Education Research (NSER) Jurnal TLM Blood Smear Al Iqtishadiyah: Journal of Islamic Economics and Finance Jurnal Pendidikan Indonesia (Japendi) KOLONI Priviet Social Sciences Journal Jurnal Guru Pencerah Semesta (JGPS) AL QALAM JURNAL KEPENDIDIKAN Jurnal Kesehatan Tropis Indonesia Indonesian Educational Administration and Leadership Journal (IDEAL) English Language, Linguistics, Literature, and Education Journal: ELLTURE JOURNAL Jurnal Kajian Islam dan Sosial Keagamaan International Journal of Renewable Energy Development SIYAR (Social Issues by Academic Researhers) Journal Educazione: Journal of Education and Learning Proceedings Series of Educational Studies Kunir: Jurnal Farmasi Indonesia (KJFI) Kajian Pendidikan, Seni, Budaya, Sosial dan Lingkungan E-Amal: Jurnal Pengabdian Kepada Masyarakat SAMBARA: Jurnal Pengabdian Kepada Masyarakat Jurnal Cendekia Ilmiah Journal of Islamic Philosophy and Contemporary Thought Tapis : Jurnal Penelitian Ilmiah
NURUL FAIZAH
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Religion Agriculture, Biological Sciences & Forestry Arts Humanities Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Earth & Planetary Sciences Economics, Econometrics & Finance Education Electrical & Electronics Engineering Energy Engineering Environmental Science Health Professions Immunology & microbiology Languange, Linguistic, Communication & Media Law, Crime, Criminology & Criminal Justice Library & Information Science Materials Science & Nanotechnology Mathematics Mechanical Engineering Medicine & Pharmacology Nursing Physics Public Health Social Sciences Veterinary Other

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Journal : IPTEK The Journal of Engineering

 1 
Application of Electrocoagulation in Stabilizing pH and Removing Pollutants from Domestic and Urban Wastewater Using Aluminum Electrodes Kaloka, Ardista Izdhihar; Faizah, Nurul; Arifin, Rizal; Aulia, Anisa Fatma; Putra, Muhammad Benaldo Anugrah; Wati, Ni’mah; Prayadi, Icha Nur
IPTEK The Journal of Engineering Vol. 11 No. 2 (2025)
Publisher : Pusat Publikasi Ilmiah, Institut Teknologi Sepuluh Nopember.

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This study investigates the application of electrocoagulation using aluminum electrodes to stabilize pH and remove pollutants from various real wastewater sources in Surabaya, Indonesia, including laundromats, fast food restaurants, campus canteens, mechanical workshops, and tofu industries. A batch-mode electrocoagulation process was conducted using 10 A of current over 60 minutes, and the performance was evaluated based on pH changes, turbidity, and Total Suspended Solids (TSS) removal. The highest TSS removal efficiency of 98% was observed in machine shop wastewater, while laundromat samples also achieved high performance with 97% reduction. Electrocoagulation demonstrated strong pH stability in effluents with buffering compounds such as those from campus canteens and workshops, whereas fluctuating pH and turbidity levels were found in tofu and fast-food effluents, indicating the need for process optimization. Turbidity decreased significantly across all samples, confirming effective floc formation during electrolysis. The findings confirm that electrocoagulation is a promising method for treating both domestic and urban wastewater. However, integrating additional processes such as adsorption or filtration is recommended to enhance performance for complex wastewater compositions and ensure compliance with discharge standards.
Effect of Inhibitor Addition, pH, and Current Density on the Corrosion Rate of Fe Metals Aulia, Anisa Fatma; Faizah, Nurul; Arifin, Rizal; Kaloka, Ardista Izdhihar; Thufailah, Gladys Sukma
IPTEK The Journal of Engineering Vol. 11 No. 2 (2025)
Publisher : Pusat Publikasi Ilmiah, Institut Teknologi Sepuluh Nopember.

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Corrosion significantly impacts public safety and the economy, causing substantial financial losses, infrastructure damage, and hazardous incidents across various industries. Researchers investigated the effects of pH, current density, and corrosion inhibitors (potassium chromate and potassium nitrate) on iron corrosion by measuring weight loss of iron samples immersed in sulfuric acid over time. The addition of inhibitors showed that KNO3 was more effective in reducing the corrosion rate, with values of 4.992068, 3.744051, 2.736034, 1.728017, and 0.608008 mils per year, compared to K2CrO4, which resulted in 9.728132, 7.296099, 5.472066, 3.648033, and 1.216017 mils per year. Corrosion rate increased as pH decreased, with Fe showing corrosion at pH 6.21, 5.18, 4.26, 3.85, and 3.22. The relationship between current density and corrosion rate was found to be proportional, with voltage values of 1.31, 2.24, 3.16, 5.11, and 7.1 amperes per square meter (A/m^2). This study confirms that inhibitor type, acidity (pH), and current density significantly influence corrosion behavior, where increasing pH and current density can accelerate corrosion, and potassium nitrate (KNO3) demonstrates superior corrosion inhibition compared to potassium chromate (K2CrO4).
Effect of Flow Rate NaOH on CO2 Absorption Efficiency Using a Column Tray Absorber Arifin, Rizal; Faizah, Nurul; Kaloka, Ardista Izdhihar; Aulia, Anisa Fatma; Thufailah, Gladys Sukma; Syukur, Muhammad Adnan
IPTEK The Journal of Engineering Vol. 11 No. 1 (2025)
Publisher : Pusat Publikasi Ilmiah, Institut Teknologi Sepuluh Nopember.

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Abstract

CO2 in industrial gas streams reduces process efficiency, corrodes equipment, and affects product quality. Additionally, CO2 emissions contribute to climate change and global warming. To mitigate these effects, CO2 removal through absorption is essential. Absorption involves contacting a gas mixture with a liquid absorbent to dissolve the gas component. This study examines the effect of CO2 flow rate (V) and NaOH flow rate (L) on CO2 absorption efficiency. The experiment involved preparing 33 liters of 0.1 normal NaOH and 250 milliliters of 0.1 normal HCl, followed by solution standardization using methyl orange. CO2 was introduced through valve V-4 while NaOH was pumped into the absorption column. Samples were taken after steady state was reached, and titration with 0.1 normal HCl determined residual NaOH concentration. Flow rate variations of 1, 3, 5, 7, and 9 liters per minute were tested. Results align with literature, indicating that as CO2 flow rate increases, NaOH flow rate also rises. However, the L/V ratio and absorbed CO2 amount decrease due to reduced contact time, lowering absorption efficiency. This study highlights the importance of optimizing flow rates to enhance CO2 capture.
Co-Authors 'Alam, Ghasa Faraasyatul ., Abbas A. Mustika Abidin Abror Achmad Dwitama Karisma Adha, Munirah Fatimah Agustina, Melinda Ahmad Nashir Ahmad Zuhdi Ahmad Zuhdi Andari, Fadhilah Nur Antari, Gladeva Yugi Ardiana Aribaat, Salma Khoirotunnisa Arifin, Rizal Arin Ika Puspitaningsih Armenia, Ivan Gustra Manca Aulia, Anisa Fatma Aulia, Kunni Rofiqotul Ayu , Sadriana AYU LESTARI Badriyah, Nur Lailatul Badrud Tamam BAMBANG SURATMAN Basuki, Edi Pujo Br.Tarigan, Dinda Florentina Rania Burhanuddin Burhanuddin Cahyani , Anggun Cita Diah Ratna Widiarti Eti Setiawati, Eti Fairuzia Khaidaroh, Hilda faizah, Nurl Faradila, Nindy Faridah, Mutiah Fatahillah, Fatahillah Febriani, Putri Indah Febriyani, Rani Diah Febry Kodoatie, Maria Stela Firdiansyah, Firdiansyah Fitri Andriani Fatimah Fitri, Wahyu Nurul Fitria Wahyuni Fuadi, Rifki Hardianti, Laily Harun Al-Rasyid Hasna, Oktavia Hikmah, Harisna I Ketut Suatha I Wayan Batan Indrawadi, Junaidi Irawan , Hisba Cahyani Isa Anshori Ismah, Nurul Ismiati Joang Ipmawati Kalloka, Sultan Hendra Mahardi Kaloka, Ardista Izdhihar Kartini Kartini Kartini, Dyan Nurwita Khasanah, Indayati Kirana, Khalida - Lailatul Qomariyah, Lailatul Lasiama, Nabila Lestari, Ida Puji Listiana Hidayati M. Imamuddin M. Yusuf Amin Nugroho Maria Montessori Maulida, Aisyah Putri Mernawati, Mernawati Moch Sasmito Djati MOCHAMMAD YASIR Mohamad, Nursa'adat Afifah binti Muali, Chusnul Muammar, Amri Mufsiroh, Istijabah Ifti Muhammad Alfian Muhammad Nurul Hasanudin Mukhlisa, Dian Murtadlo Murtadlo Mustofa Mustofa Ngulum, Mochamad Bahrul Noprianti, Yuni Noviyanti Watman, Ika Nugroho, Muhammad Yusuf Amin Nur Aisyah Nurul Hidayat Pramesti, Novita Ayu Pratiwi , Ika Ari Prayadi, Icha Nur Putra, Muhammad Benaldo Anugrah Putra, Nicky Rahmana Qomaria, Nur Rabbani, Sulthan Raden Bambang Sumarsono Rafika Rahman, K.A Rahmat Aryandi Ramlah Ratna Yunita Retnoningrum, Sri Murti Rivani, Sinta romdhoni, muhammad wildan S. Latinapa, Moh. Hidayat Şaban, Ömer Safutri, Lhutfia Wahyu Saijun, Saijun Saputri, Nadia Elga Saputro, Rafly Restu Dwi Setiyadi, Bradley Setyaningrum, Eka Wahyu Shabrina, Amalina Shafina, Shafina Siti Ummi Masruroh Slamet Suyanto Sri Aju Indrowaty Suryanef Suryanef Syamsiarna Nappu, Syamsiarna Syukur, Muhammad Adnan Thufailah, Gladys Sukma Tsaqifah, Ainun Wati, Ni’mah Wawan Shokib Rondli Widayanti, Agnisa Wifaq Kholidiyah, Ananda Wijaya, Nur Widad Wiwin Puspita Hadi Wulandari, Elis Dwi Yahya Nur Ifriza Yenita Roza Yhustien, Dhea Yogananda, Amrina Amalia Yulianti, Selvia Zakiyyah, Rifqatun Zulfatun Ruscitasari Zulkipli Lessy