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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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The effect of activated carbon on the adsorption of coconut shell liquid smoke on the coagulation process of latex clone PB 260 Achmad, Feerzet; Deviany, Deviany; Huda, Asyifa Duwiyan Nuril; Fortunatus, Hottua Ernest; Satria, Arysca Wisnu; Yuniarti, Reni; Aryani, Wika Atro; Hasyim, Ummul Habibah
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.
EFFECT OF LONG-TERM STATIC MACERATION ON THE YIELD, ACID VALUE, AND FUNCTIONAL GROUPS OF AGARWOOD RESIN FROM AGARWOOD POWDER WASTE Reni Yuniarti; Muhammad Idham Kamil; Muhammad Raihan Adiwidya; Feerzet Achmad; Mustafa Mustafa
JURNAL INTEGRASI PROSES Vol 15, No 1 (2026)
Publisher : JURNAL INTEGRASI PROSES

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.62870/jip.v15i1.37572

Abstract

Agarwood powder, a by-product of agarwood processing, still contains valuable aromatic compounds, including sesquiterpenoids and chromones, used in aroma-based industries. However, its utilization remains limited due to the lack of simple and efficient extraction strategies. This study aims to investigate the effects of prolonged maceration time and agitation on the yield, acid value, and functional groups of agarwood resin extracted from agarwood powder using ethanol at a 1:3 (w/v) ratio, under agitated and non-agitated conditions for two and seven months. The results demonstrate that maceration time and agitation influence resin recovery and quality. The highest resin yield (4.537% v/w) was obtained after seven months of maceration without agitation, indicating that static conditions more effectively promote gradual diffusion and accumulation of high-molecular-weight resin compounds while minimizing mechanical and oxidative degradation. In contrast, agitated maceration resulted in lower yields (0.228–0.279% v/w) and higher acid values (10.9±0.85 mg NaOH/g), suggesting accelerated hydrolytic reactions and increased formation of free fatty acids, which may adversely affect resin quality. FTIR analysis showed that the principal functional groups of agarwood resin remained relatively stable under different maceration conditions. However, minor shifts in the O–H absorption bands suggested slight chemical changes, possibly related to enhanced hydrogen bonding and the formation of carboxylic acid groups during prolonged agitated maceration. These findings indicate that long-term static maceration has potential as a simple, low-energy, and sustainable extraction method to improve the utilization and commercial value of agarwood powder waste in resin-based industrial applications.
Co-Authors . Suhartono AA Sudharmawan, AA Aditya, Fajri Agnesia Putri Rini Agus Firmansyah Aldillah Herlambang Alfares, Nelson Alfernando, Oki Alhanif, Misbahudin Alya Deenanti, Dara Amelia, Devita Ananda, Novia Putri Andri Sanjaya Anggi Oktasari Antika, Rindi Ardian, Muhammad Ikhwan Arie Sabdi Sembiring Armanda, Selvy Aryani, Wika Atro Auriyani, Wika Atro Auriyani, Wika Atro Ay Ahmad Ayu Pratiwi, Ayu Az-zahra, Syifa Azizah, Rifka Noor Azzahra, Syifa Baehaqi Damayanti Damayanti Damayanti Damayanti Daulay, Yuliana Dennis Farina Nury 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 Fitranita, Vika Fortunatus, Hottua Ernest Galeh Widharma Harmiansyah Harni Saragih, Tresya Siti Hatta, Madani Herri Susanto Herti Utami Huda, Asyifa Duwiyan Nuril Hukama, Ikhwan Ihsan, Ahyatul Imalia, Calaelma Logys Imalia, Calaelma Logys Irene Seventina Lubis Jabosar Ronggur Hamonangan Panjaitan Jarwinda, Jarwinda Jayawarsa, A.A. Ketut Jerry Jerry Jodi Hans Sitorus Junita, Nilam Khaerunissa Anbar Istiadi Kiki Yulia Handayani Kurniawan , Jatmiko Kurniawan, Jatmiko Lince Muis Lince Muis Lisa Angraini Lismeri, Lia Lisnurani, Lisnurani Mahardika, Melbi Mahendra, Lufi Eka Mahendra, Lufy Eka Manullang , Roida Manullang, Roida Manurung, Pandapotan Maruli Tua Mardiansyah, Rio Marlina, Titi Melani Putri Melbi Mahardika Muhammad Abdul Mubdi Bindar Muhammad Abdul Muhdi Bindar Muhammad Alfarizi Tazkia Muhammad Fajri Muhammad Idham Kamil Muhammad Ikhwan Ardian Muhammad Iqbal Muhammad Raihan Adiwidya Muhammad Reahan Ramadhan Muhammad Triyogo Adiwibowo Muhammad Zulfikar Luthfi Musa Musa Musa Musa Mustafa Mustafa Mutiara Fajar Naldi, Roy Natalia, Yolanda Noorsaly, Siti Rizkyna Novia Putri Ananda Nugroho, Andreas Dwi Nuranisa, Ayunda Nurfitri, Viola Nurul Fadhilah Nury, Dennis Okta Priadi Oktasari, Anggi Pandiangan, Kamisah Delilawati Prahmana, Rico Aditia Pramahadi Febriyanto Prasetyo, Rizky Dimas Pribadi, Shelty Aty Purba, Sry Oktavianty Purwanti, Millennia Rischa Qarimah, Akhlatul Qorimah, Akhlatul Rahmadini, Gustia Ratih Ainun Mardiyah Reni Yuniarti Ridho Ramadhan Ridwan Pratama Yudha 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 Sida Mubin, Abror Simbolon, Firman Simbolon, Nur Indah Simbolon, Yusril Mahendra Simparmin br Ginting Sinaga, Kristomi Yahya Sinurat, Riristiani Stevence Manalu, Laurentsius SUHARTO Suharto Suharto Suharto Suharto Suharto Suharto Suharto Suharto Suharto Suharto Suharto Suharto Suhartono Suhartono Suhartono Suhartono Suhartono Suhartono Suhartono Sulaiman, Ali Khotib Suryanto, Ido Syarifah Aini Sylvia, Teny Tambunan, Yonathan Marasi Tampubolon, Yosi Anugrah S.M Ummul Habibah Hasyim Uzlifah Janah, Dikri Variyana, Yeni Wahyu Saputri, Laila Wardani Putri, Elfira Wiandini, Wandha Widiyanti Aprilia Wika Atro Auriyani Yazid Bindar Yudhanti, Tri Febri Yuli Darni Yuniar Luthfia Listyadevi Yunita Fahni Yusuf, Reggina Aulia Yusupandi, Fauzi Zaezarini, Nabhila Zahra, Nurul Afifah Zhofiroh, Nawrah Meisyah Muthi'ah Zuhri, Ahmad Azkal Azkiya