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Journal : Protech Biosystems Journal

Utilization of Pumpkin seed waste extract as an inhibitor in reducing the corrosion rate on metals Hidayatullah, Syarif; Sari, Nasmi Herlina; Huda, Ahmad Akromul; Pradityatama, Maharsa; Sinarep, Sinarep; suteja, suteja
Protech Biosystems Journal Vol 5, No 1 (2025): Protech Biosystem Journal
Publisher : Universitas Muhammadiyah Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31764/protech.v5i1.32116

Abstract

Our research focuses on enhancing the potential of pumpkin seed waste extract as a sustainable corrosion inhibitor for metal (Fe) in 1 M HCl solution. Phytochemical screening and antioxidant activity were identified. Various investigative methodologies including experimental techniques such as Potentiodynamic Polarization (PDP) were used to evaluate the effectiveness of these pumpkin seed waste extract inhibitors in inhibiting corrosion. Electrochemical results showed that the effectiveness of the inhibitor was concentration dependent here reaching 83.11% at 3000 g/L pumpkin seed waste extract inhibitor. The PDP showed that the mixed inhibition control effectively retarded the corrosion of the metal. Furthermore, the adsorption behavior of the pumpkin seed waste extract inhibitor onto the metal follows the Langmuir isotherm model with physisorption properties. The adsorption mechanism of the inhibitor on the metal surface successfully formed a protective film on the metal surface thereby reducing the corrosion rate.  
THE USE OF KAPOK SEED AGRICULTURAL WASTE AS A SOURCE OF NATURAL CORROSION INHIBITOR FOR ALUMINUM 6061 Hidayatullah, Syarif; Huda, Ahmad Akromul; Suteja, Suteja
Protech Biosystems Journal Vol 5, No 2 (2025): Protech Biosytem Journal (Desember)
Publisher : Universitas Muhammadiyah Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31764/protech.v5i2.35784

Abstract

Aluminum 6061 is one of the most widely used materials across various industrial sectors due to its good mechanical properties, lightweight nature, and corrosion resistance. However, in acidic environments, aluminum remains susceptible to corrosion, which can reduce its performance and service life. This study utilizes agricultural waste from kapok seeds (Ceiba pentandra) as an environmentally friendly corrosion inhibitor for Aluminum 6061. The extract was obtained through maceration using ethanol as the solvent and was applied in corrosion tests of Aluminum 6061 in 1 M HCl solution. The evaluation was conducted using potentiodynamic polarization (PDP) and electrochemical impedance spectroscopy (EIS) techniques, along with isothermal adsorption analysis to understand the adsorption mechanism of the inhibitor on the metal surface. The results showed that the kapok seed extract significantly increased polarization resistance and reduced the corrosion rate, achieving a maximum inhibition efficiency of 78.77% at an optimal concentration of 3000 ppm. The inhibitor adsorption followed the Freundlich isotherm model, indicating strong binding interactions between the inhibitor molecules and the aluminum surface. Therefore, kapok seed extract has great potential as an environmentally friendly and cost-effective corrosion inhibitor for aluminum-based industries.
IMPROVING ANTIBACTERIAL, THERMAL AND MECHANICAL PROPERTIES OF PVA BIOCOMPOSITES REINFORCED WITH TIMOHO FIBER NANOCELLULOSE Suteja, Suteja; Hidayatullah, Syarif; Huda, Ahmad Akromul
Protech Biosystems Journal Vol 5, No 2 (2025): Protech Biosytem Journal (Desember)
Publisher : Universitas Muhammadiyah Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31764/protech.v5i2.36289

Abstract

Polyvinyl alcohol (PVA) has promising potential as gas purification membrane and bioplastic substitute for conventional materials. PVA material was reinforced with nanocellulose timoho fibers (NCT). Ten grams of NCT, 30 mL of distilled water, and 10 grams of PVA were stirred (500 rpm) at <80 oC on a magnetic stirrer until gel formed, then spread on a Petri dish and dried in an oven at 50 °C for 21 hours. The elongation, tensile strength, and elastic modulus test results of PVA-NCT biocomposites showed increases of 21%, 29.97%, and 31.57%, respectively, compared to PVA biocomposites. This was due to the role of NCT as reinforcing agent and the mobility of PVA when tensile test. SEM morphology showed a fine speckled surface due to clumping. The thermal resistance of biocomposite increased due to the good interfacial bonding between NCT and the PVA matrix, thereby reducing the rate of weight loss. Exothermic reactions occurred in both biocomposites. The PVA biocomposite had a melting temperature of 110.34 °C, and PVA-NCT biocomposite 119.83 °C. The antibacterial activity of the PVA biocomposite has a lower inhibitory power compared to the PVA-NCT biocomposite. These biocomposites can be used for membrane materials and environmentally friendly bioplastics. 
Co-Authors A'yun, Siti Qurrotu Abas, Farhat Abd. Basid Abda Abda Abdul Karim Abdul Rahman Jupri Abdul Waris Abdullah Mubarak Abimubarok, Achmad Achmad , Alamsyah ADE HIKMAT Adhy Firdaus Adi Taufiqurrahman Adryan Fitrayudha Aep Saefullah Agista, Shella Agung Prihandono Agus Salim Salabi Agustina Agustono Setiawan Ahmad Fadli Ahmad Khairi Ahmad Kholibi Ahmad Maftuh Sujana Ahmad Zarkasi Ahyar Ahyar Ai Fatimah Nur Fuad Aidil Fitri, Anugrah Ainun Jariyah Ainun Rofiah Akmalia Esadiani Akmas, Nabilla Al Hayaza, M. Iqbal Aldrian, Andhika Illyas Alhafizh Alfan, Mochamad Alhafi, Ainu Farhan Alviana, Stella Alvianna, Stella Alvin Dwi Yunianto Alwi, Ridwan Achmad Alya Fitri Amadea Permana Sanusi Amalia, Putri Idayatul Amanda, Moni Amelia, Indri Ananda Irfana Zahra Andi Firman Mubarak Anggun DP, Laila Nanda Aprilia, Nining Apriliani, Lili Apriolita, Cindi Ardianti, Yuyun Arif Khan, M.Dawud Arif Mulyanto Arisandi, Edi Aristanto, Eko Aritonang, Sovian Aroby, Sudhan Arria Gemilang ASNI Asyari, Asyari Auzan Jiwangga Seta Avihani, Nur Awaludin Hidayat Ramli Inaku AYU NINGSIH Azizi, Victorian H. Azka Davia Azzahra , Sitti Aliyah Azzahra, Putri Nadira Baehaqi Bahari, Dewi Rizki Bambang Setyawan Bima, Fajar Cahya Komara Cahyani, Budiato Calvin Akbar Setiawan Cindi Apriolita Cuk Yuana, Cuk Daviq Chairilsyah Dayat Wijanarko Devan Rizki Maulana Dewanni, Riyo T. P. Dewi Indah Sari, Dewi Indah Dewi Pusparini Dewi Rizki Bahari Dinda Ninggar Pramesti Dwi Ana, Anggita Cucu Dwi Harjanti, Fransisca Edita Rachma Kamila Ediyanto Elly Arliani Elya Primariz Ery Sulistyorini Eudia Christina Wulandari Fadoilur Rohman Fahlan, Nauval Sya'bani Fahri Fahri Faiqah, Atiatul Fariyadin, M. Ruslin Anwar, Indradi Wijatmiko, Adiman Fariza, Dita Sari Rofi’u Fatah, Muhammad Ghoni Abdillah Femiana Gapsari MF Fikri, Muhammad Idzad Firman Robbani Fitriani Fitriani Fitriani Gaga Fasarinda Galih, Aji Muhamad Gumilang, Louis Alqorni Guntur Eko Saputro Gustiyanti, Ferra Hafidz Hafidz Hairul Halim Tjiwidjaja Hansi Effendi Haria Saputri Hendra Candra Herawati Herawati Hermawan, Yogi Hermin, Dewi Hibban, Ibnu Hidayat, Fadhillah Maulana Hidayatullah, Wasil Hikmah Hisbul Luthfi Ashsyarofi Huanggino, Sherissa Callista Huda, Ahmad Akromul Husnatul Mahmudah ifan Ihwan P. Syamsudin Ike Kusdyah Rachmawati Ilyas Ina, Syafa Sabrina Indrawan, Surya Ishaq, Rafli Maulana Islamiati, Ade Ismahayati, Dewi Isman, Muh Istiqomah, Dewi Istirokah, Istirokah Jaenab Jainuddin Jainuddin Joni Safaat Adiansyah Junaeni, Nova Juniardi, Nurdin Jupri, Abdul Rahman Kamal, Nuri Azkia Kamila, Edita Rachma Kamili, Rd. A. Faqih Al Kana Hidayati Khalikussabir, Khalikussabir Khotami, Ahmad Rosyid Khusniyati Masykuroh Krisanti, Imelda Kurniati, Shinta Bella Kusumawardhani, Lintang Dian Lailatul Fitriani Lailatul Qomariyah, Lailatul Lelly Hana Setyanti, Sri Wahyu Listanti, Riana Lubis, Maymunah Lukman Hakim Luthfie Ainun Nissa M DIKI LESMANA M. Chothibul Umam A Magfiroh, Syahriyatul Mahabbati Izzati Rahmani Maharani, Karlina Dewi Maharsa Pradityatama Mahbubah, Surotul Mahdum Mahrini, Mahrini Maptuh Bustami Mardiana Andarwati Masrukhi Masrukhi Maulana, Muhamad Khansa Ma’suq, Ahmad Tarajjil Mediyana Melati, Reni Miarsono, Harry Miftah, Dita miftahul jannah, putri Miharja, Marjan Millah, Niyah Daniyatul Misbahul Arifin Moh Bayu Bahtiar Ramadhani Moh Hafidul Ahkam Moh. Anwar Zainuddin Moh. Tahang Mubarak Mubarak Muhafidhah Novie Muhaimin Muhaimin Muhaimin, Abd Wahab Abd Muhamad Yamastio Sektiningtyas Muhammad Al Rifzki Muhammad Ichsan, Sayed Muhammad Idzad Fikri Muhammad Imam Fauzi Muhammad Isradi Muhammad Lucky Fredyansyah Muhammad Rizal Ramli Muhammad Syawaluddin, Muhammad Mukhammad Nadhif Fuad Muktiono Waspodo Musyaffa, M. Rafif Nabila Salsabila Nadra, Ely Farhana Nadya Nani Solihati Nasmi Herlina Sari Nerisma Eka Putri Noor, , M. 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Ramu Yulia Pandarangga Ratnaningsih, Christina Sri Retnoningsih Riadi, Rendi Slamet Rianti, Nada Mulya Richa Khairani Rini Damayanti Rizal, Saifur Rizky Amalia Rohimah, Ummi Romadhon, M. Yusri Romi Aprianto Ronaldi, Tomy Rosdiana Roviandri Rozak, Fakih Abdul Rusdi Sulaiman Safitri Saiful Husin Saiful Ulya Saksana, Joned C Saleh, Basuki Rahmad Salsabila, Fina Fathiya Salsabila, Nabila Sam, Marwah Amaliah Putri Samso Supriyatna Saniah, Reni Diah Afi Sanuri Sanusi, Gufran Saprudin Saputra, Juliansyah Sari, Herlina Sarmadi, Ahmad Seftiandani, Atsilah Diah Setiabudid, Muhammad Rizaldy Putra Setiawan, Muhammad Arief Shania Ayu Bestira Shaputri, Nurul Afra Siborutorop, Jonathan Simanjuntak, Nensy Megawati Sinarep Sinarep Sintia Haryani Sirad, Mochammad Apriyadi Hadi Siti Fauziah Siti Tatmainul Qulub Sitti Aliyah Azzahra Sofyan , Sofyan Sohiron, Sohiron Sri Devi, Sri Sri Islamiyah Putri Abidin Sri Utami Subhan Subhan Suciati Damopolii Sufiyanto, Mohammad Imam Sugiono, Adinda Ayu Putri Sukardi Sukardi Sulfa, Indana Sulis Janu Hartati Sulistyawati Sulistyawati Sulistyawati, Yayang Sunu, Prayogi Supriyadi, Asep Adang Surya, Mukhlis Ade Suryani Suryani Suryono, Nabilla A. Suteja Suteja Suteja, Suteja Syandi, Fahreza Muhammad Syihabuddin Syihabuddin Sylvia Indriany Taewa, Abdurrahman Tahir, Rahmah Tamara, Amelia Puspa Tania Eka Pratiwi Tarsono Tawaqqal, Akbar Tedi Permadi Tetty Nur Intan Rifia TIJANIYAH TIJANIYAH, TIJANIYAH Tohiroh, Tohiroh Toni, Toni Trie Utari Dewi Trie Utari Dewi Trie Utari Dewi, Trie Utari Tuti Herawati Tutut Rahayu Ulhaq, Muhammad Zia Umar Sagaf Umar Umar Umu Khouroh Usman Usman Usman, Jamiludin Vismania S. Damaianti, Vismania S. Wati, Sonia Fatma Wazis, Kun Widayat, Edy Widjayanto, Joni Widya Cholid Wahyudin Wijaya, Lientang winarti, dwi Wini Tarmini Wirasansir, Genta Witarsyah, Witarsyah Yasmin Fadhilah Ardiyati Yogi Setiawan yudhi, alex aldha Yulianti, Mawarni Yunan Putra, Muh Yusaq Tomo Ardianto Yusuf Yusuf Zaenal Mutaqqin Zahra, Siti Fatimatu Zainuddin, Zulkifli Zil Aidi, Zil Zubair Arza Zuhrah Zulkifli