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All Journal Jurnal Teknik Kimia USU Eksergi: Chemical Engineering Journal JURNAL INTEGRASI PROSES Jurnal Ilmiah Pangabdhi Konversi Jurnal Penelitian Karet Jurnal Tekno Insentif Jurnal Teknik Kimia USU Journal of Industrial Community Empowerment Communication in Food Science and Technology TeknoKreatif: Jurnal Pengabdian kepada Masyarakat Jurnal Rekayasa Proses Jurnal Bioteknologi & Biosains Indonesia (JBBI) Jurnal Bioteknologi & Biosains Indonesia
Reni Yuniarti
Institut Teknologi Sumatera
Agriculture, Biological Sciences & Forestry Humanities Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Computer Science & IT Control & Systems Engineering Economics, Econometrics & Finance Education Engineering Environmental Science Health Professions Industrial & Manufacturing Engineering Materials Science & Nanotechnology Social Sciences Other

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Produksi Karboksimetil Selulosa dari Nata De Coco dan Limbah Kertas Napitupulu, Lukas Fernando; Panjaitan, Jabosar Ronggur Hamonangan; Simanjuntak, Tiurmaida Gebryela; Herlambang, Aldillah; Yuniarti, Reni; Nury, Dennis Farina
Jurnal Tekno Insentif Vol 18 No 1 (2024): Jurnal Tekno Insentif
Publisher : Lembaga Layanan Pendidikan Tinggi Wilayah IV

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36787/jti.v18i1.1388

Abstract

Abstrak Limbah kertas dan nata de coco merupakan material yang mengandung selulosa. Selulosa yang terdapat pada limbah kertas dan nata de coco dapat dimanfaatkan untuk memproduksi produk dengan nilai jual tinggi yaitu karboksimetil selulosa (CMC). Pada penelitian ini diteliti produksi CMC dari limbah kertas dan nata de coco serta membandingkan nilai derajat subsitusi (DS) yang dihasilkan nya. Berdasarkan penelitian yang telah dilakukan diperoleh bahwa CMC dari nata de coco memiliki derajat subsitusi tertinggi yaitu 0,661 dengan konsentrasi NaOH dan natrium monokloroasetat (NaMCA) yang digunakan sebesar 20% dan 16 gram. Sedangkan CMC dari bahan baku limbah kertas memiliki derajat subsitusi terendah yaitu 0,066 dengan konsentrasi NaOH dan NaMCA yang digunakan sebesar 10% dan 10 gram. Konsentrasi NaOH dan NaMCA mempengaruhi nilai DS CMC, dimana semakin tinggi konsentrasi NaOH dan NaMCA yang digunakan akan menghasilkan nilai DS CMC yang tinggi. Pada penelitian ini diperoleh nilai DS CMC nata de coco lebih tinggi dibandingkan dengan DS CMC limbah kertas. Nilai DS pada CMC dapat diperoleh maksimal dengan adanya proses pretreatment bahan baku dan optimasi jumlah NaOH dan NaMCA pada proses produksi CMC. Abstract Paper waste and nata de coco contain cellulose. The cellulose which found in paper waste and nata de coco can be used to produce products with high selling value, namely carboxymethyl cellulose (CMC). In this research, CMC production from paper waste and nata de coco was examined and the value of degree of substitution (DS) produced was compared. Based on research that has been carried out, it was found that CMC from nata de coco had the highest DS, namely 0.661 with NaOH and sodium monochloroacetate (NaMCA) concentration used were 20% and 16 grams. Meanwhile, CMC from paper waste raw had the lowest DS, namely 0.066 with NaOH and NaMCA concentration used were 10% and 10 grams. The concentration of NaOH and NaMCA affects the DS CMC value, where higher NaOH and NaMCA concentration used will produce higher DS CMC value. In this study, the DS CMC of nata de coco was higher than the DS CMC of paper waste. The maximum DS value in CMC can be obtained by raw materials pretreatment and optimizing the amount of NaOH and NaMCA in the CMC production process.
UTILIZATION OF PINEAPPLE PROCESSING LIQUID WASTE IN BIODEGRADATION OF DISPOSABLE FACE MASK BY BACTERIA FROM LAMPUNG BAY Deviany, Deviany; Zhofiroh, Nawrah Meisyah Muthi'ah; Febrina, Yane Fita; Yusuf, Reggina Aulia; Achmad, Feerzet; Yuniarti, Reni; Istiadi, Khaerunissa Anbar
Jurnal Bioteknologi & Biosains Indonesia (JBBI) Vol. 11 No. 2 (2024)
Publisher : BRIN - Badan Riset dan Inovasi Nasional

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55981/jbbi.2024.8192

Abstract

The designation of COVID-19 as a global pandemic led to an increased use of single-use face masks, which result in waste that is difficult to degrade and has the potential to release microplastic fibers into the environment. This study aims to examine the im-pact of adding pineapple peel liquid waste (LCN) as a growth medium for the biodeg-radation of single-use face masks by bacterial isolates obtained from the waters of the Lampung Bay. The study investigates how LCN affects the efficiency of mask degra-dation by microorganisms, as well as how the ratio of LCN mixed with other growth media, such as Nutrient Broth (NB), influences the degradation process. The biodeg-radation process was carried out using a biostimulation technique, where bacterial iso-lates were incubated in media containing LCN at a 1:1 ratio. The degradation process lasted for 15 days, with the results being analyzed using gravimetry and Fourier-Transform Infrared Spectroscopy (FTIR). Gravimetric results showed a greater weight reduction in treated masks compared to the control masks. FTIR analysis also indicat-ed changes in the intensity of functional groups in the degraded layers of the masks, as well as the emergence of C≡C functional groups in the second and third layers. This study demonstrates that the addition of LCN can accelerate the biodegradation of sin-gle-use face masks, offering a new approach for managing mask waste.
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.
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.
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.
Co-Authors AA Sudharmawan, AA Aldillah Herlambang Amelia, Devita Andri Sanjaya Angeline Nauli Asyifa Duwiyan Nuril Huda Auriani, Wika Atro Auriyani, Wika Atro Ayu Pratiwi, Ayu Az-zahra, Syifa Damayanti Damayanti Dennis Farina Nury Desi Riana Saputri Deviany Deviany Deviany, Deviany Diana Catur Pratiwi Dyra Raihan Fauziah Early Akhalisty Inge Abigail Br Simanjuntak Faalih Pandu Wicaksono Hadi Fahni, Yunita Fauzi Yusupandi Febrina, Yane Fita Feerzet Achmad Fikrah, Faizatul Glen Bower Vebrianto Siregar Hottua Ernest Fortunatus Hukama, Ikhwan Ikhlas, Fikri Rahmatul Jabosar Ronggur Hamonangan Panjaitan Jayawarsa, A.A. Ketut Khaerunissa Anbar Istiadi Khofifah Anggitiya Ningrum Lisa Angraini Lisnurani, Lisnurani Listyadevi, Yuniar Luthfia Marlina, Titi Misbahudin Alhanif Muhammad Alfarizi Tazkia Muhammad Idham Kamil Muhammad Raihan Adiwidya Muhammad Triyogo Adiwibowo Mustafa Mustafa Naldi, Roy Napitupulu, Lukas Fernando Putra, Muhammad Alparidi Pamungkas Putri Jesika Adelia Qarimah, Akhlatul Rahmadini, Gustia Rifka Noor Azizah Rifqi Sufra Safitra, Edwin Rizki Saputri, Desi Riana Satria, Arysca Wisnu setiawan, Darma Sida Mubin, Abror Simanjuntak, Tiurmaida Gebryela Simbolon, Yusril Mahendra Sinaga, Kristomi Yahya Siti Rizkyna Noorsaly SUHARTO Suharto Suharto Suharto Suharto Suharto Suharto Suhartono Suhartono Suhartono Suhartono Tambunan, Yonathan Marasi Ummul Habibah Hasyim Uzlifah Janah, Dikri Vania Nur Wahdani Variyana, Yeni Wahyu Saputri, Laila Wardani Putri, Elfira Wiandini, Wandha Wika Atro Aryani Yazid Bindar Yuliana Daulay Yuniar Luthfia Listyadevi Yunita Fahni Yusuf, Reggina Aulia Yusupandi, Fauzi Zaezarini, Nabhila Zega, Fidel Abdiman Zhofiroh, Nawrah Meisyah Muthi'ah