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All Journal Jurnal Rekayasa Proses Jurnal Teknik Kimia USU IPTEK The Journal of Engineering Eksergi: Chemical Engineering Journal Jurnal Pengabdian Kepada Masyarakat Sakai Sambayan Seminar Nasional Teknik Kimia Kejuangan JURNAL INTEGRASI PROSES Agrokreatif Jurnal Ilmiah Pengabdian kepada Masyarakat Jurnal Ilmiah Pangabdhi Konversi Jurnal Penelitian Karet Journal of Science and Applicative Technology Jurnal Rekayasa Proses Jurnal Redoks Jurnal Teknik Kimia Jurnal Abdi Masyarakat (JAM) Jurnal Teknologi Bahan dan Barang Teknik Abdimasku : Jurnal Pengabdian Masyarakat Jurnal Graha Pengabdian Jurnal Riset Teknologi Pencegahan Pencemaran Industri REACTOR : Journal of Research On Chemistry And Engineering Jurnal Engineering JURNAL LENTERA KARYA EDUKASI: Jurnal Pengabdian Kepada Masyarakat TRIBUTE: JOURNAL OF COMMUNITY SERVICES Jurnal Teknik Kimia USU Journal of Industrial Community Empowerment DEDIKASI : Jurnal Pengabdian Kepada Masyarakat Jurnal Pengabdian Masyarakat Pinang Masak TeknoKreatif: Jurnal Pengabdian kepada Masyarakat Jurnal Rekayasa Proses Babakti : Journal of Community Engangement Jurnal Pengabdian kepada Masyarakat Multidisiplin (JUPENGEN) JURNAL REKAYASA KIMIA & LINGKUNGAN Jurnal Teknologi dan Inovasi Industri Jurnal Bioteknologi & Biosains Indonesia (JBBI) Jurnal Bioteknologi & Biosains Indonesia ISTA Online Technologi Journal Babakti: Journal of Community Engangement Industrial Innovation
Feerzet Achmad
Institut Teknologi Sumatera
Religion Agriculture, Biological Sciences & Forestry Humanities Automotive Engineering Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Earth & Planetary Sciences Economics, Econometrics & Finance Education Electrical & Electronics Engineering Energy Engineering Environmental Science Health Professions Industrial & Manufacturing Engineering Languange, Linguistic, Communication & Media Materials Science & Nanotechnology Mathematics Mechanical Engineering Medicine & Pharmacology Physics Public Health Social Sciences Transportation Other

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PENGARUH MASSA KARBON AKTIF DAN KONSENTRASI ADSORBAT DALAM PENYERAPAN ZAT WARNA METILEN BLUE Dennis Nury; Muhammad Zulfikar Luthfi; Deviany Deviany; Feerzet Achmad; Jabosar Ronggur Hamonangan Panjaitan
IONTech Journal Vol. 4 No. 2 (2023): Agustus 2023
Publisher : Institut Sains dan Teknologi Al-Kamal

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.62702/ion.v4i2.89

Abstract

In this study, the effect of activated carbon mass and methylene blue solution concentration on adsorption capacity, the length of time required to reach equilibrium, and isothermal modeling of activated carbon material in the adsorption process were studied. The variables used are the mass of activated carbon as much as 100 mg, 75 mg, and 50 mg and the concentration of methylene blue solution of 20, 40, 60, 80, and 100 ppm. The adsorption process in the three mass variations occurred at an optimum contact time of 80 and 90 minutes with an adsorption percentage of 99%. Adsorption of methylene blue dye by activated carbon from durian peel follows Freundlich isothermal modeling with a K value of 15846.44 mg/g and 1/n of 23.666 which shows an indicator of concentration dependence of the amount of energy associated with the adsorption process.
Producing chitosan from shellfish waste and its application as a natural coagulant in water purifiers Feerzet Achmad; Rifka Noor Azizah; Yuliana Daulay; Reni Yuniarti; Suharto Suharto; Suhartono Suhartono; Siti Rizkyna Noorsaly
Konversi Vol 13, No 2 (2024): OKTOBER 2024
Publisher : Universitas Lambung Mangkurat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20527/k.v13i2.19882

Abstract

Waste from simping shellfish (Amusium pleuronectes) shells can pose environmental hazards if waste levels exceed the threshold. This research aims to produce chitosan from shellfish, specifically simping shells, for the purification of raw water. The optimal dosage for both chitosan and alum coagulants in water samples with bay river turbidity (49.5 NTU) is 1 ppm, resulting in a turbidity removal percentage of 99%. The optimum pH for chitosan coagulant (1 ppm) is 6.32, and for alum coagulant (1 ppm) is 8. For bay river water with an initial turbidity of 49.5 NTU, the optimal dose of chitosan coagulant is 1 ppm, achieving a turbidity removal percentage of 99%. Producing chitosan from shellfish waste as a natural coagulant for water purification offers an eco-friendly, cost-effective solution that enhances water quality, reduces seafood industry waste, and provides a safe alternative to chemical coagulants, with potential applications in various fields.
Extraction of leaves oil from fresh leaves by using microwave-assisted extraction (MAE) and ultrasonic-assisted extraction (UAE) methods Calaelma Logys Imalia; Firman Simbolon; Hendra Hendra; Nilam Junita; Yolanda Natalia; Viola Nurfitri; Nurul Afifah Zahra; Sry Oktavianty Purba; Tresya Siti Harni Saragih; Shelty Aty Pribadi; Wika Atro Auriyani; Feerzet Achmad
Konversi Vol 14, No 2 (2025): OCTOBER 2025
Publisher : Universitas Lambung Mangkurat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20527/k.v14i2.22972

Abstract

Essential oils are natural chemical compounds that are volatile and have a distinctive aroma, which are produced by plants as part of their secondary metabolites. This study aims to examine the differences in % yield content, extract pH, color, FFA value, and essential oil structure of each sample. The main materials used in this study were several types of aromatic leaves, namely lemongrass, pandan, lime, and eucalyptus leaves. The methods used were Microwave-Assisted Extraction (MAE) and Ultrasound-Assisted Extraction (UAE). The essential oil with the highest yield value and a specific gravity close to the Indonesian National Standard (SNI) is analyzed using Fourier Transform Infrared Spectroscopy (FTIR). The eucalyptus leaf sample yielded the highest percentage with the MAE method, achieving a yield of 46 %. The FTIR analysis identified a broad absorption peak at 3257.7 cm⁻¹, indicating the presence of hydroxyl groups (-OH), which suggests alcohols or phenols and possible moisture contamination. Peaks at 2124.6 cm⁻¹ and 1744 cm⁻¹ reveal methylene (C-H) and carbonyl (C=O) groups, suggesting the presence of terpenoids and oxidized compounds like esters or ketones. Additional peaks at 1640 cm⁻¹ and 1013.8 cm⁻¹ and ether (C-O) groups, with the latter confirming the presence of 1,8-cineole in eucalyptus oil.
The effect of activated carbon on the adsorption of coconut shell liquid smoke on the coagulation process of latex clone PB 260 Feerzet Achmad; Deviany Deviany; Asyifa Duwiyan Nuril Huda; Hottua Ernest Fortunatus; Arysca Wisnu Satria; Reni Yuniarti; Wika Atro Aryani; Ummul Habibah Hasyim
Konversi Vol 15, No 1 (2026): APRIL 2026
Publisher : Universitas Lambung Mangkurat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20527/k.v15i1.25704

Abstract

This study investigated the effectiveness of coconut shell–derived liquid smoke (CLS) and activated carbon–treated liquid smoke (CLSC) as natural coagulants for natural rubber latex clone PB 260, compared with 2% formic acid (FA). Rubber quality was assessed based on Total Solid Content (TSC), Dry Rubber Content (DRC), initial plasticity (Po), Plasticity Retention Index (PRI), ash content, dirt content, volatile matter, and Mooney viscosity according to the SNI 06-1903-2017 standard for Indonesian Standard Rubber (SIR 20). Experiments were conducted using fresh latex from clone PB 260 under the D3 tapping system, with 150 mL of latex treated with each coagulant. FA produced the fastest coagulation time (3.39 min), while CLS and CLSC required 4.37 and 4.29 min, respectively. CLS showed the highest DRC (15.33%), whereas CLSC provided better rubber stability with the highest PRI (85.83%) and high Mooney viscosity. All coagulants met SIR 20 limits for ash, dirt, and volatile matter, although Po values remained below the standard.
Pengolahan Limbah Tambak Udang Terintegrasi Kultivasi Mikroalga dari Kawasan Pertambangan Deviany Deviany; Triya Yuli Andini; Aji Hafiz Talaga; Andri Sanjaya; Feerzet Achmad; Dennis Farina Nury; Desi Riana Saputri
IPTEK The Journal of Engineering Vol. 12 No. 1 (2026)
Publisher : Institut Teknologi Sepuluh Nopember

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12962/j28075064.v12i1.9275

Abstract

Microalgae have a high lipid content, making them a potential feedstock for biofuel production. In this study, microalgae isolated from the Tanggamus mining area was cultivated in liquid medium from shrimp aquaculture waste. The main objectives were to examine the growth of microalgae in shrimp aquaculture waste specifically in liquid waste, sediment waste, and a combination of both to assess whether these waste types can serve as effective cultivation media, and to evaluate the microalgae's adaptability as well as its role in mitigating environmental pollution. The microalgae were cultivated in the three different waste mediums, and the results were compared to a control medium using walne. The findings revealed that shrimp aquaculture sediment supported the highest biomass production, reaching 17.80 mg/L. The mixed media yielded 15.93 mg/L, while the walne control and liquid waste media produced 9.00 mg/L and 3.87 mg/L, respectively. Furthermore, post-cultivation analysis revealed an increase in nutrient concentrations, including nitrogen, phosphorus, and potassium, in the cultivation medium. The microalgae strain reduced BOD in shrimp aquaculture waste, especially in sediment. COD in liquid waste increased due to complex compounds and cell lysis. Lipid extraction from the microalgal biomass highlighting its potential as a feedstock for biodiesel production. These results suggest that shrimp aquaculture waste, particularly its sediment component, not only serves as a suitable medium for cultivating microalgae, but also contributes to environmentally sustainable practices by helping reduce aquatic pollution and promoting waste-to-resource conversion.
Co-Authors . Suhartono AA Sudharmawan, AA Abdul Halim Aditya, Fajri Agnesia Putri Rini Agus Firmansyah Agus Firmansyah Aji Hafiz Talaga Akhdan Ara Dzaky Aldillah Herlambang Alfares, Nelson Alfernando, Oki Alfira Putri Damayanti Alhanif, Misbahudin Alya Deenanti, Dara Amelia, Devita Ananda, Novia Putri Andri Sanjaya Andri Saputra Anggi Oktasari Antika, Rindi Ardian, Muhammad Ikhwan Arie Sabdi Sembiring Armanda, Selvy Asyifa Duwiyan Nuril Huda Auriyani, Wika Atro Auriyani, Wika Atro Ay Ahmad Ayu Pratiwi, Ayu Az-zahra, Syifa Azahlea Sukesih Azzahra, Syifa Baehaqi Calaelma Logys Imalia Damayanti Damayanti Damayanti Damayanti Dennis Farina Nury Dennis Nury Desi Riana Saputri Desi Riana Saputri Deviany Deviany Deviany, Deviany Deviany, Deviany Deviany, Deviany Devita Amelia Didik Supriyadi, Didik Donny Lesmana Dufan Saragih, Juro Edwin Rizki Safitra Enjel Saputri Ezra Sitorus, Fajar Fahmi, Yunita Fahni, Yunita Fahni, Yunita Fahni, Yunita Faisal, Amir Fajri Aditya Fandi , Oki Okta Fandi, Oki Okta Farsya Bani Asmara Febrina, Yane Fita Fergusta , Wilibrordus Bima Digdya Fergusta, Wilibrordus Bima Digdya Fikrah, Faizatul Firman Simbolon Fitranita, Vika Galeh Widharma Harmiansyah Hatta, Madani Hendra Hendra Hendri Kurniawan Herri Susanto Herti Utami Hottua Ernest Fortunatus Hukama, Ikhwan Ihsan, Ahyatul Imalia, Calaelma Logys Irene Seventina Lubis Jabosar Ronggur Hamonangan Panjaitan Jarwinda Jarwinda Jarwinda, Jarwinda Jayawarsa, A.A. Ketut Jerry Jerry Jodi Hans Sitorus Kasih Pilia Khaerunissa Anbar Istiadi Kiki Yulia Handayani Kurniawan , Jatmiko Kurniawan, Jatmiko Lestari Lestari Lince Muis Lince Muis Lisa Angraini Lismeri, Lia Lisnurani, Lisnurani Lufy Eka Mahendra Madani Hatta Mahardika, Melbi Mahendra, Lufi Eka Mahendra, Lufy Eka Manullang , Roida Manullang, Roida Manurung, Pandapotan Maruli Tua Mardiansyah, Rio Marlina, Titi Melani Putri Melbi Mahardika Misbahul Huda Muhammad Abdul Mubdi Bindar Muhammad Abdul Muhdi Bindar Muhammad Alfarizi Tazkia Muhammad Alif Anzami Muhammad Fajri Muhammad Idham Kamil Muhammad Ikhwan Ardian Muhammad Iqbal Muhammad Irsyad Abdullah Muhammad Raihan Adiwidya Muhammad Reahan Ramadhan Muhammad Triyogo Adiwibowo Muhammad Zulfikar Luthfi Musa Musa Musa Musa Mustafa Mustafa Mutiara Fajar Naldi, Roy Nilam Junita Novia Putri Ananda Nugroho, Andreas Dwi Nur Setianingrum Nuranisa, Ayunda Nurul Afifah Zahra Nurul Fadhilah Okta Priadi Oktasari, Anggi Pandiangan, Kamisah Delilawati Prahmana, Rico Aditia Pramahadi Febriyanto Prasetyo, Rizky Dimas Purwanti, Millennia Rischa Qarimah, Akhlatul Qorimah, Akhlatul Rafael Denny Sihotang Rahmadini, Gustia Ratih Ainun Mardiyah Reni Yuniarti Ridho Ramadhan Ridwan Pratama Yudha Rifka Noor Azizah Rifqi Sufra Rizky Dimas Prasetyo Robianto, Bagus Rosafira, Adela Safitra, Edwin Rizki Sanjaya, Bagus Gelorawan Saputri, Desi Riana Saputri, Desi Riana Saputri, Desi Riana Sarah Fiebrina Heraningsih Sari, Dewi Kurnia Satria, Arysca Wisnu Sembiring, Arie Sabdi Setianingrum, Nur setiawan, Darma Shelty Aty Pribadi Sida Mubin, Abror Simbolon, Nur Indah Simbolon, Yusril Mahendra Simparmin br Ginting Sinaga, Kristomi Yahya Sinurat, Riristiani Siti Maria Fentriyana Salma Siti Rizkyna Noorsaly Sry Oktavianty Purba Stevence Manalu, Laurentsius SUHARTO Suharto Suharto Suharto Suharto Suharto Suharto Suharto Suharto Suharto Suharto Suharto Suharto Suharto Suharto Suhartono Suhartono Suhartono Suhartono Suhartono Suhartono Suhartono Suhartono Sulaiman, Ali Khotib Suryanto, Ido Syahrizal Nasution Syarifah Aini Sylvia, Teny Tambunan, Yonathan Marasi Tampubolon, Yosi Anugrah S.M Teny Sylvia Titi Marlina Tresya Siti Harni Saragih Triya Yuli Andini Tulusma Basana Simaremare Ummul Habibah Hasyim Uzlifah Janah, Dikri Variyana, Yeni Viola Nurfitri Wahyu Saputri, Laila Wardani Putri, Elfira Wiandini, Wandha Widiyanti Aprilia Wika Atro Aryani Wika Atro Auriyani Wika Atro Auriyani Yazid Bindar Yolanda Natalia Yudhanti, Tri Febri Yuli Darni Yuliana Daulay Yuniar Luthfia Listyadevi Yunita Fahni Yusuf, Reggina Aulia Yusupandi, Fauzi Zaezarini, Nabhila Zhofiroh, Nawrah Meisyah Muthi'ah Zuhri, Ahmad Azkal Azkiya