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All Journal Elkawnie Jurnal Litbang Industri Jurnal Serambi Engineering Jurnal Vokasi Jurnal Litbang Industri ADINDAMAS: Jurnal Pengabdian Kepada Masyarakat Aceh International Journal of Science and Technology Buletin Pengabdian JURNAL REKAYASA KIMIA & LINGKUNGAN
Sri Aprilia
Department Of Chemical Engineering, Universitas Syiah Kuala, Banda Aceh, Indonesia.
Agriculture, Biological Sciences & Forestry Humanities 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 Energy Engineering Environmental Science Industrial & Manufacturing Engineering Public Health Social Sciences

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Extraction of Tannin from Jamblang Leaves (Syzigium cumini) with Ethanol Solvent to Reduce Phenols in Phenol-Formaldehyde in Wood Adhesives Aprilia, Sri; Bakar, Abu; Fajria, Gebrina Rezky; Yuni, Elza; Amin, Amri; Fitriani, Fitriani; Bilad, Muhammad Roil
Jurnal Rekayasa Kimia & Lingkungan Vol 19, No 1 (2024): Jurnal Rekayasa Kimia & Lingkungan (June 2024 )
Publisher : Chemical Engineering Department, Syiah Kuala University, Banda Aceh, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23955/rkl.v19i1.27953

Abstract

Phenol formaldehyde is one of the adhesives often used in wood processing, such as panels, particle boards, fiberboards, plywood, and others. However, the implementation of phenol formaldehyde adhesive has been greatly limited because of its non-renewability and toxicity. Modifying phenol formaldehyde adhesives is needed to reduce formaldehyde emission by adding tannin to the adhesive mixture. This study aims to extract tannin compounds from Java plum leaves with ethanol as a solvent for adhesive mixture. The adhesive implementation on plywood was also prepared, with various tannin content in the range of 10%-50%. The obtained data from tannin extraction from Java plum leaves are tannin yield, functional groups, total phenolic content, viscosity, and compressive test on plywood. The highest tannin yield and content are 46.70% and 27.88 mg/L, respectively, obtained at the weight ratio 1:5. At the same time, products of tannin-phenol formaldehyde have a viscosity as SNI 1987 standards for wood adhesives, namely in the range of 0.68-0.71 poise, while the result of the compressive strength is in the range of 0.02-0.05 N/mm2 and has met the requirement of SNI 1998 standards. Therefore, the tannin from Java plum leaves is a promising substitution of phenol in phenol formaldehyde in some aspects of the wood processing industry.
PREPARATION AND CHARACTERIZATION OF FLY ASH ADDITIVE MODIFIED POLIESTER BASED MEMBRANE Efendi, Januar; Aprilia, Sri; Djuned, Fauzi M
Jurnal Rekayasa Kimia & Lingkungan Vol 18, No 2 (2023): Jurnal Rekayasa Kimia & Lingkungan (December, 2023 )
Publisher : Chemical Engineering Department, Syiah Kuala University, Banda Aceh, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23955/rkl.v18i2.26297

Abstract

Recently, Polyethersulfone (PES) polymer material based on flat sheet membranes reached much attention in membrane technology. However, PES polymer has low hydrophilicity. This study describes PES-based membranes incorporating fly ash as an additive. The first analysis was conducted by Fourier Transform Infrared, Scanning Electron Microscope, tensile strength, and porosity tests. Four membranes, including pure PES membranes, were prepared via the phase inversion process, namely MA0, MA0.1, MA1, and MS1. The characteristics of the membrane samples were analyzed in terms of chemical group, morphology, mechanical and membrane surface hydrophilicity. The characterization results show that additive incorporation increased pure water flux performance, and the highest pure water permeability increased up to 70% by the MA1 membrane. Moreover, it increased by 19% compared to pure silica-modified PES membrane (MS1). In addition, the MA-1 membrane at a pressure of 3 bar reached significant performance in the trend of pure water flux values because of these improvements in membrane characteristics. The membrane also shows a higher tensile strength with adding additives to the membrane prepared.
Effect of Acid Concentration on the Properties of Microcrystalline Cellulose from Pineapple Crown Leaf Fitriani, Fitriani; Aprilia, Sri; Arahman, Nasrul; Bilad, Muhammad Roil
Jurnal Rekayasa Kimia & Lingkungan Vol 17, No 1 (2022): Jurnal Rekayasa Kimia & Lingkungan (June, 2022)
Publisher : Chemical Engineering Department, Syiah Kuala University, Banda Aceh, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23955/rkl.v17i1.21010

Abstract

Microcrystalline cellulose was first extracted from pineapple crown leaf waste which is used very rarely as an alternative material from agricultural residue and then characterized. Microcrystalline cellulose was extracted from this waste through acid hydrolysis with various concentrations. The effect of acidconcentrations with sulfuric acid (H2SO4) on microcrystalline cellulose properties was investigated to determine its potential application as a material. Pineapple crown leaf was hydrolyzed for 2 hours at 45 along with various sulfuric acid concentrations (1, 2, and 3 M). The properties of the cellulose were evaluated by Scanning electron microscopy (SEM), Fourier transforms infrared (FTIR) spectroscopy, X-ray diffraction (XRD), and thermogravimetric analysis (TGA). Among all the hydrolysis conditions carried out, the best hydrolysis condition was 3 M sulfuric acid. At this hydrolysis condition, the microcrystalline cellulose presented a rod-like shape, high crystallinity at 83.16%, and have average crystal size of 17.99 nm. The functional group and morphology analysis showed that the resulted product is maintained cellulose I structure and removal of non-cellulosic constituents and the chemical compositions. As for the thermal analysis, the temperature decreased from 177 (2 M sulfuric acid) to 149 (3 M sulfuric acid) because of the incorporation of sulfate groups after the hydrolysis process. Therefore, microcrystalline cellulose obtained from pineapple crown leaf waste has great potential as reinforcement in the manufacture of composites.
pemanfaatan selulosa dari limbah kulit buah pinang sebagai bahan baku pembuatan bioplastik Tamiogy, Wahyu Ramadhani; Kardisa, Anis; Hisbullah, Hisbullah; Aprilia, Sri
Jurnal Rekayasa Kimia & Lingkungan Vol 14, No 1 (2019): Jurnal Rekayasa Kimia & Lingkungan (June, 2019)
Publisher : Chemical Engineering Department, Syiah Kuala University, Banda Aceh, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23955/rkl.v14i1.11517

Abstract

Bioplastik adalah salah satu jenis plastik yang terbuat dari sumber biomassa terbarukan. Selulosa dari kulit buah pinang berpotensi sebagai bahan baku pembuatan bioplastik dengan menggunakan gliserol sebagai plastizicer. Tujuan penelitian ini untuk membuat film plastik biodegradable, dimana prosedur penelitian adalah isolasi alfa-selulosa dengan metode delignifikasi, pembuatan bioplastik dengan metode solution casting dan karakterisasi bioplastik. Selulosa yang telah diekstraksi dari kulit buah pinang digunakan untuk pembuatan film plastik. Ekstraksi selulosa menggunakan variasi konsentrasi NaOH saat delignifikasi sebesar 15%, 20%, dan 25% dan bleaching dengan NaOCl 3,5%. Sedangkan pembuatan film plastik menggunakan variasi perbandingan gliserol 0,5 gram, 1 gram, dan 1,5 gram. Dimana karakteristik bioplastik terbaik pada penelitian ini diperoleh pada konsentrasi pelarut NaOH 20% dengan penambahan gliserol 1,5 gram di dapat densitas sebesar 0,3 gr/ml, daya serap terhadap air 128,57%, kuat tarik sebesar 14,57 kgf/mm2, dan % elongasi sebesar 5,44%
Characterization of Polyether Sulfone (PES) Membranes Filled with Activated Carbon from Jatropha Seed Shell as Aditif for Elimination Peroxide Number and Free Fatty Acid in Used Cooking Oil Aprilia, Sri; Rosnelly, Cut Meurah; Ramadhani, Sri; Novarina, Lia; Fathanah, Umi; Djuned, Fauzi Muhammad; Amin, Amri
Jurnal Rekayasa Kimia & Lingkungan Vol 13, No 1 (2018): Jurnal Rekayasa Kimia & Lingkungan (June, 2018)
Publisher : Chemical Engineering Department, Syiah Kuala University, Banda Aceh, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23955/rkl.v13i1.10471

Abstract

Minyak goreng adalah bahan konsumsi yang penting dalam rumah tangga dan industri makanan. Sayangnya, sering digunakan berulang kali karena mahal. Tindakan ini mungkin tidak hanya berbahaya bagi kesehatan manusia, tetapi juga mempengaruhi nilai gizi dan mengurangi kualitas makanan. Kualitas reduksi ditunjukkan dengan meningkatnya jumlah peroksida dan jumlah asam lemak. Penelitian ini menggunakan membran PES yang dimodifikasi dengan penambahan karbon aktif dari kulit biji jarak sebagai aditif untuk mengurangi fouling dalam minyak goreng olahan. Membran diproduksi dengan metode presipitasi perendaman. Sementara, karbon diaktivasi dengan larutan KOH 0,1% dan dipanaskan dalam furnace pada temperatur 600oC.Membran dan karbon aktif dianalisis menggunakan metode FTIR. Analisis SEM menghasilkan membran asimetris dengan lapisan atas berpori dan lapisan bawah padat. Tiga campuran dalam penelitian ini dibuat dengan melarutkan PES yang dimodifikasi dengan karbon aktif pada 0%,3%, dan 5% (b/b) dalam N-methylpirrolidone. Pada penambahan karbon aktif 5% (b/b) dalam campuran membran menghasilkan koefisien permeabilitas tertinggi (L/P) sebesar 9,682 L m2bar-1h-1, pengurangan bilangan peroksida adalah 45% dan pengurangan asam lemak bebas adalah 72% dapat tercapai.
Membran Polisulfon untuk Pengolahan Air: Dengan dan Tanpa Pra Perlakuan Koagulasi secara Ultrafiltrasi Arifin, Bastian; Aprilia, Sri
Jurnal Rekayasa Kimia & Lingkungan Vol 10, No 1 (2014): Jurnal Rekayasa Kimia & Lingkungan
Publisher : Chemical Engineering Department, Syiah Kuala University, Banda Aceh, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23955/rkl.v10i1.2172

Abstract

Membran polisulfon untuk pengolahan air telah dilakukan untuk mengurangi warna air dengan proses koagulasi dan tanpa proses koagulasi. Membran ultrafiltrasi polisulfone telah dikarakte-risasi dengan mengukur fluks, permeability (Lp), dan MWCO dengan bebagai variasi berat molekul dekstran. Morfologi membran diobservasi dengan scanning electron microscopy (SEM). Analisis SEM dilakukan terhadap permukaan membran dan penampang melintang membran. Proses koagulasi optimum dilakukan dengan menggunakan alat jar test, diperoleh kondisi optimum pada 50 ppm Al2(SO4)3 dan pH 7. Indeks warna rejeksi diperoleh dengan koagulasi adalah 85% dan tanpa koagulasi adalah 62%.
Kombinasi Proses Koagulasi dan Sistem Ultrafiltrasi dengan Membran Poliakrilonitril untuk Pemurnian Air Berwarna Aprilia, Sri; Arifin, Bastian; Anugerah, Ricky Rivaldi; Safriadi, Indra
Jurnal Rekayasa Kimia & Lingkungan Vol 9, No 4 (2013): Jurnal Rekayasa Kimia & Lingkungan
Publisher : Chemical Engineering Department, Syiah Kuala University, Banda Aceh, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23955/rkl.v9i4.1230

Abstract

Penelitian pengolahan air berwarna berdasarkan proses koagulasi dan ultrafiltrasi dengan membran poliakrilonitril (PAN) telah dilakukan. Studi ini bertujuan untuk membuat dan mengevaluasi karakteristik membran PAN untuk aplikasi pada pengolahan air berwarna. Membran PAN berbentuk plat dibuat dengan melarutkan polimer PAN kedalam dimetilformamida (DMF). Konsentrasi PAN divariasikan pada 15, 20, dan 25 (% berat). Membran yang dihasilkan selanjutnya dikarakterisasi untuk parameter struktur morfologi dengan scanning electron microscopy (SEM), fluks dan rejeksi larutan menggunakan modul filtrasi tipe dead-end. Selanjutnya dilakukan uji molecular weight cut-off (MWCO) membran menggunakan larutan dekstran dengan berat molekul 9500, 19500, dan 39000 Da. Hasil uji SEM menunjukkan bahwa membran mempunyai pori dengan struktur asimetrik. Uji ultrafiltrasi yang diawali dengan proses koagulasi dapat merejek warna air 92,5%, dengan perolehan fluks mencapai 364,8 ml/m2.s.
Pembuatan Membran Komposit Khitosan-Selulosa dari Limbah Kulit Kepala Udang Aprilia, Sri
Jurnal Rekayasa Kimia & Lingkungan Vol 5, No 1 (2006): Jurnal Rekayasa Kimia & Lingkungan
Publisher : Chemical Engineering Department, Syiah Kuala University, Banda Aceh, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

Khitosan adalah produk yang dapat diasetilasi dari khitin, dan banyak terdapat di alam. Khitin diisolasi dari limbah kulit udang yang merupakan polimer alam yang mempunyai struktur mirip dengan selulosa. Khitosan ini bersifat hidrofilik dan merupakan material biodegradable. Dengan pesatnya teknologi pemisahan, maka khitosan telah digunakan sebagai bahan pembuat membran. Membran khitosan bersifat hidrofilik yang memiliki kemampuan yang tinggi dalam melewatkan permeat berupa air. Pada penelitian ini khitosan diisolasi dari khitin pada temperatur 120oC dan waktu deasetilasi 120 menit. Kandungan air yang diperoleh adalah 7% dan kandungan abu adalah 1,28%. Membran komposit khitosan dan selulosa dibuat dengan metode inversi fasa dan teknik polimerisasi antar muka. Hasil peneletian dilakukan karakterisasi membran dengan permeasi pelarut. Fluks besar diperoleh pada membran dengan konsentrasi khitosan terkecil yaitu 0,25%. Koefisien permeabilitas (Lp) terbesar diperoleh pada membran dengan konsentrasi khitosan 0,25%, yaitu sebesar 1,522 l/m2jam bar.
Sintesis dan Karakterisasi Membran untuk Proses Ultrafiltrasi Aprilia, Sri; Amin, Amri
Jurnal Rekayasa Kimia & Lingkungan Vol 8, No 2 (2011): Jurnal Rekayasa Kimia & Lingkungan
Publisher : Chemical Engineering Department, Syiah Kuala University, Banda Aceh, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

Asymmetric ultrafiltration (UF) membranes were prepared from three kinds of polymer namely polyacrilonitryle (PAN), polysufone (PS), and cellulose acetate (CA) by phase inversion method. Water was used as non-solvent. These membranes were charachterized for ultrafiltration membranes i.e measurement of solvent permeability (Lp), Molecular Weight Cut Off membranes (MWCO) with various molecular weight of solute dekstran, and morphology of the membrane by Scanning Electron Microscopy (SEM). SEM analysis includes surface area and cross section area. Membranes with polymer low concentration 10% as PAN-1, PS-1 and CA-1 have the larger Lp from PAN-2, PS-2, and CA-2 that have concentration 15% for the same type of polymer. These occur because of the larger pore membrane than high concentration of polymer. SEM analysis showed a homogeneous distribution in the surface membrane and pore of membran like sponge structure from cross section area. Membranes CA-1, CA-2, FS-1 and FS-2 have Molecular Weight Cut off (MWCO) for the solute dextran 40000 Da. For PS-2 and PS-2 membranes have MWCO of dextran above 20000 Da.Keywords: ultrafiltration membrane, solvent permeability coeficient, MWCO, membrane morphology
Upaya berkelanjutan: peningkatan pupuk kompos plus berbasis limbah nilam dan abu sekam padi di Gampong Teungoh Geunteut, Aceh Besar (Sustainable efforts: enhancing compost plus fertilizer based on patchouli waste and rice husk ash in Teungoh Geunteut Village, Aceh Besar) Bashair, Fathul; Rida, Muhammad Rasyid; Idrus, Nabila Fardina; Malau, Anisa; Aprilia, Sri; Umam, Muhammad Khalil
Buletin Pengabdian Vol 3, No 3 (2023): Bull. Community. Serv.
Publisher : Universitas Syiah Kuala

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24815/bulpengmas.v3i3.34704

Abstract

Teungoh Geunteut Village is one of the enormous patchouli cultivation centers in Aceh. The high quality of the patchouli oil produced creates great potential for the community to carry out agriculture. However, the large number of patchouli farmers in Teungoh Geunteut Village has resulted in a massive accumulation of patchouli waste thrown out from distillation using steam boilers. The patchouli waste has not yet been utilized properly, resulting in environmental problems. To overcome the uncontrolled accumulation of patchouli waste, PKM-PM teams took the initiative to utilize the patchouli waste into compost plus fertilizer. Compost plus fertilizer can overcome environmental problems and be an alternative solution to replace the undersupply of subsidized fertilizer the government provides. Producing compost plus fertilizer can be enhanced by adding bio silica from rice husk ash. Bio silica contained in rice husk ash has an important role in absorbing the nutrients plants need to initiate quality compost plus fertilizer. The service activities were carried out in August-September 2023 in Teungoh Genteut Village on one of the residents' lands. In carrying out this activity, the team carried out 3 series of stages, namely: (1) socialization on making compost plus fertilizer, (2) direct practice on making solid and liquid compost plus fertilizer, and (3) packaging compost plus fertilizer. The results achieved in this activity are solid and liquid compost fertilizer products that can be used as commercial materials to improve the economy of the Teungoh Geunteut community. Apart from that, this service activity can be used as a forum to increase residents' knowledge and understanding regarding the processing of agricultural waste into compost and techniques for marketing strategies.
Co-Authors Abu Bakar Amri Amin Amri Amin Anis Kardisa Atmaja, Noorulviah Beredhawati Bashair, Fathul Bastian Arifin Bastian Arifin Bastian Arifin Bilad, Muhammad Roil Bulan, Ramayanty Cut Meurah Rosnelly Cut Rahmawati Darwanis Darwanis Deasy Amanda Valentine Dedy Hariadi Devianti, Devianti Djuned, Fauzi M Djuned, Fauzi Muhammad Efendi, Januar Eryani Eryani Fajria, Gebrina Rezky Farid Mulana Fauzi M Djuned Fauzi M. Djuned Fitriani Fitriani Hariadi, Dedy Hisbullah Hisbullah Hisbullah Hisbullah Idrus, Nabila Fardina Indra Mawardi Indra Safriadi Indra Safriadi Kardisa, Anis M. Faisal M. Saleh*, Sofyan Malau, Anisa Maria Ulfah Mirna Rahmah Lubis Muhfadzallah Muhfadzallah Mukramah Yusuf Nasrul Arahman Novarina, Lia R. Anwar Yamin R. Anwar Yamin Ramadhani, Sri Ratna Ratna Ricky Rivaldi Anugerah Ricky Rivaldi Anugerah Rida, Muhammad Rasyid Rizal, Samsul Saepudin, Ahmad Sofyan M. Saleh Sri Mulyati Suparno Suparno Supriadi, Cucu Syaifullah Muhammad Syawaliah Muchtar Tamiogy, Wahyu Ramadhani Taufiq Saidi Teuku Budi Aulia Titien Sara Umam, Muhammad Khalil Umi Fathanah Umi Fathanah Wahyu Ramadhani Tamiogy Wahyu Rinaldi yunardi, yunardi Yuni, Elza Zuhra Zuhra