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All Journal Jurnal Ilmu Kebencanaan : Program Pascasarjana Unsyiah Jurnal Litbang Industri Warta IHP (Warta Industri Hasil Pertanian) ALCHEMY Jurnal Penelitian Kimia Jurnal Litbang Industri Jurnal Rekayasa Kimia & Lingkungan Jurnal Inovasi Ramah Lingkungan
Cut Meurah Rosnelly
Chemical Engineering Department Universitas Syiah Kuala
Agriculture, Biological Sciences & Forestry Chemical Engineering, Chemistry & Bioengineering Chemistry Control & Systems Engineering Education Energy Environmental Science Industrial & Manufacturing Engineering Materials Science & Nanotechnology

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(The Effect of Acetate Anhhhydrida Ratio in the Process of Cellulose Acetylation of Pulp from Sengon (Paraserianthe falcataria) on the Production of Cellulose Triacetate Polymer) Meurah Rosnelly, Cut; Aziz Darwis, Abdul; Noor, Erliza; -, Kaseno
Warta Industri Hasil Pertanian Vol 27, No 01 (2010)
Publisher : Balai Besar Industri Agro

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (6159.962 KB)

Abstract

Almost all of Cellulose acetate is produced by reaction of cellulose and acetic anhydride using strong acids as catalyst and acetic acid as a solvent. A typical industrial process requires very high quality cellulose raw materials having a high a-cellulose content. The cellulose used as a raw material in this research is wood pulp of sengon (Paraserianthes falcataria) due to fast growing species and has potential used as a raw material as if has a high cellulose content. The main objective of this research was to obtain condition for making cellulose triacetate by applying applying ratio levels of acetic anhydride toward cellulose in acetylation process. Cellulose triacetate flake was produced by activation and acetylation process. Activation was carried out by mixing cellulose of sengon pulp with glacial acetic in proportion  1:8 at 50oC about 15; 30; 60; 90, and 120 minutes. Acetylation is then conducted using reagents in following proportions relative to the pulp mass; variable of acetic anhydride ratio (3.35:1), (4:1), (5:1), and (6:1), acetic acid as solvent (4.5 : 1), sulfuric acid (0.015 : 1) as catalyst while controlling the reaction temperature at 50oC for 60 minutes. The result showed anhydride toward cellulose 3.35 in acetylation process.
(The Effect of Acetate Anhhhydrida Ratio in the Process of Cellulose Acetylation of Pulp from Sengon (Paraserianthe falcataria) on the Production of Cellulose Triacetate Polymer) Meurah Rosnelly, Cut; Aziz Darwis, Abdul; Noor, Erliza; -, Kaseno
Warta Industri Hasil Pertanian Vol 27, No 01 (2010)
Publisher : Balai Besar Industri Agro

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (6159.962 KB) | DOI: 10.32765/warta ihp.v27i01.2585

Abstract

Almost all of Cellulose acetate is produced by reaction of cellulose and acetic anhydride using strong acids as catalyst and acetic acid as a solvent. A typical industrial process requires very high quality cellulose raw materials having a high a-cellulose content. The cellulose used as a raw material in this research is wood pulp of sengon (Paraserianthes falcataria) due to fast growing species and has potential used as a raw material as if has a high cellulose content. The main objective of this research was to obtain condition for making cellulose triacetate by applying applying ratio levels of acetic anhydride toward cellulose in acetylation process. Cellulose triacetate flake was produced by activation and acetylation process. Activation was carried out by mixing cellulose of sengon pulp with glacial acetic in proportion  1:8 at 50oC about 15; 30; 60; 90, and 120 minutes. Acetylation is then conducted using reagents in following proportions relative to the pulp mass; variable of acetic anhydride ratio (3.35:1), (4:1), (5:1), and (6:1), acetic acid as solvent (4.5 : 1), sulfuric acid (0.015 : 1) as catalyst while controlling the reaction temperature at 50oC for 60 minutes. The result showed anhydride toward cellulose 3.35 in acetylation process.
ADSORPSI ION LOGAM Cr (VI) DENGAN MENGGUNAKAN KARBON AKTIF DARI TEMPURUNG KEMIRI (ALEURITES MOLUCCANA) M. Nasruddin; Cut Meurah Rosnelly; Farid Mulana
Jurnal Ilmu Kebencanaan : Program Pascasarjana Unsyiah Vol 4, No 4: November 2017
Publisher : Jurnal Ilmu Kebencanaan : Program Pascasarjana Unsyiah

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Abstract

The purpose of the study was to find out the characteristics and morphology of adsorbent material from candlenut shell to absorbing Cr(VI) metal ion, the effect of stirring time, initial concentration and solution pH adsorbat  on efficiency and capacity of absorption, reaction kinetics, and isotherm adsorption. The fixed variables are adsorbent mass, adsorbate solution volume and stirrer speed.  While the variable that changes consists of the concentration of adsorbate solution, stirring time, and pH. Making activated carbon using NaOH activator with a ratio = 3: 1 and pyrolysis process at a temperature of 700oC for 1 hour. From the results of the adsorption equilibrium research achieved in 150 minutes, 25% absorption efficiency (100 mg/L), adsorption capacity of 3.6 mg/g (200 mg/L). The optimum absorption efficiency occurs in an acidic atmosphere with pH 2-4. Adsorption kinetics followed a second order kinetics model with R2 = 0.999, kenetic constant value (K2) of 8.329 min-1 and adsorption capacity value at equilibrium (qe) of 3.5714 mg/g. Adsorption isotherms follow Langmuir and Freundlich Isotherms because they have a large R2 value. SEM analysis shows that there are many pores on the surface of the activated carbon after the chemical activation process with sodium hydroxide.
Sintesis, Karakterisasi dan Kinerja Membran Hidrofobik Menggunakan Polyvinyl Pyrrolidone (PVP) sebagai Aditif Umi Fathanah; Mirna Rahmah Lubis; Zuhra Mahyuddin; Syawaliah Muchtar; Mukramah Yusuf; Cut Meurah Rosnelly; Sri Mulyati; Rina Hazliani; Devi Rahmanda; Suraiya Kamaruzzaman; Meuthia Busthan
ALCHEMY Jurnal Penelitian Kimia Vol 17, No 2 (2021): September
Publisher : UNIVERSITAS SEBELAS MARET (UNS)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20961/alchemy.17.2.48435.140-150

Abstract

Artikel ini melaporkan tentang sintesis, karakterisasi dan kinerja membran polyethersulfone (PES) yang dimodifikasi dengan aditif polyvinyl pyrrolidone (PVP) dengan tujuan untuk meningkatkan kinerja dan sifat antifouling membran. Membran PES modifikasi dibuat dengan penambahan 0,5% PVP sebagai aditif, menggunakan pelarut dimethyl sulfoxide (DMSO) dan n-methyl pyrrolidone (NMP). Pengaruh penambahan aditif dalam sistem membran dievaluasi dengan menganalisa perubahan struktur kimia menggunakan fourier transform infrared (FTIR), perubahan morfologi permukaan menggunakan scanning electron microscopy (SEM), uji kuat tarik menggunakan tensile strength meter, uji porositas membran dengan menggunakan metode gravimetri, serta pengujian kinerja filtrasi, dan sifat antifouling. Hasil analisa struktur membran dengan SEM menunjukkan adanya pengaruh jenis pelarut dan penambahan aditif terhadap perubahan morfologi membran. Selain itu modifikasi membran juga meningkatkan porositas, kinerja fluks permeasi serta sifat antifouling membran. Hasil uji filtrasi membran menunjukkan perolehan permeabilitas air pada membran D-0,5 dan N-0,5 masing masing sebesar 47,5 L/m2.jam.atm dan 41,5 L/m2.jam.atm dengan sifat antifouling membran modifikasi lebih besar dibandingkan dengan membran tanpa modifikasi. Synthesis, Characterization, and Performance of Hydrophobic Membranes Using Polyvinyl Pyrrolidone (PVP) as Additives. This paper discusses the synthesis, characterization and performance of polyethersulfone (PES) membranes modified with polyvinyl pyrrolidone (PVP) additives in order to improve the performance and antifouling properties of membranes. The modified PES membrane was prepared by adding 0.5% PVP as an additive, using dimethyl sulfoxide (DMSO) and n-methyl pyrrolidone (NMP) as solvents. The effect of adding additives to the membrane system was evaluated by analyzing changes in chemical structure using fourier transform infrared (FTIR), changes in surface morphology using scanning electron microscopy (SEM), tensile strength test using tensile strength meter, membrane porosity test using the gravimetric method, as well as testing the filtration performance and antifoulingproperties. The results of membrane structure analysis by SEM showed the influence of the type of solvent and additives on changes in membrane morphology. In addition, membrane modification also increases porosity, permeation flux performance, and membrane antifouling properties. The results of the membrane filtration test showed that the water permeability of D-0.5 and N-0.5 membranes was 47.5 L/m2.h.atm and 41.5 L/m2.h.atm, respectively, with modified membrane antifouling properties larger than the membrane without modification.
Kombinasi proses perebusan dan pengeringan bahan baku pada ekstraksi minyak alpukat menggunakan screw press Alfina Suci Cahyani; Nadia Putri Mauliza; Cut Meurah Rosnelly; Muhammad Dani Supardan
Jurnal Litbang Industri Vol 12, No 1 (2022)
Publisher : Institution for Industrial Research and Standardization of Industry - Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1878.656 KB) | DOI: 10.24960/jli.v12i1.7272.1-6

Abstract

Screw press merupakan salah satu alat yang dapat digunakan untuk memisahkan minyak dari daging buah dengan cara mendorong dan menekan bahan baku sehingga terjadi pengekstrakan. Penelitian ini bertujuan untuk mempelajari kinerja kombinasi proses perebusan dan pengeringan bahan baku daging buah alpukat pada ekstraksi minyak alpukat menggunakan screw press. Proses perebusan bahan bertujuan untuk menghilangkan getah pada buah alpukat dengan cara mengikat fosfor yang terkandung dalam getah menggunakan air atau larutan CaCO3. Pengeringan adalah proses mengeluarkan sebagian air dari suatu bahan dengan cara menguapkan air tersebut dengan menggunakan energi panas. Variabel penelitian yang digunakan yaitu metode proses perebusan bahan baku (menggunakan air, CaCO3, dan kontrol) dan metode pengeringan bahan baku  (menggunakan microwave, oven, dan sinar matahari). Kombinasi proses perebusan menggunakan air dan pengeringan bahan menggunakan microwave menghasilkan yield minyak alpukat tertinggi yaitu 48,98% b/b. Sementara itu yield terendah dihasilkan pada perlakuan kontrol (tanpa perebusan) dengan pengeringan menggunakan sinar matahari yaitu 37,92% b/b. Karakteristik minyal alpukat yang dihasilkan hampir sama dengan minyak alpukat komersial dan telah memenuhi memenuhi syarat mutu minyak goreng sesuai Standar Nasional Indonesia (SNI) No. 3741:2013.
Kombinasi proses perebusan dan pengeringan bahan baku pada ekstraksi minyak alpukat menggunakan screw press Alfina Suci Cahyani; Nadia Putri Mauliza; Cut Meurah Rosnelly; Muhammad Dani Supardan
Jurnal Litbang Industri Vol 12, No 1 (2022)
Publisher : Institution for Industrial Research and Standardization of Industry - Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24960/jli.v12i1.7272.1-6

Abstract

Screw press merupakan salah satu alat yang dapat digunakan untuk memisahkan minyak dari daging buah dengan cara mendorong dan menekan bahan baku sehingga terjadi pengekstrakan. Penelitian ini bertujuan untuk mempelajari kinerja kombinasi proses perebusan dan pengeringan bahan baku daging buah alpukat pada ekstraksi minyak alpukat menggunakan screw press. Proses perebusan bahan bertujuan untuk menghilangkan getah pada buah alpukat dengan cara mengikat fosfor yang terkandung dalam getah menggunakan air atau larutan CaCO3. Pengeringan adalah proses mengeluarkan sebagian air dari suatu bahan dengan cara menguapkan air tersebut dengan menggunakan energi panas. Variabel penelitian yang digunakan yaitu metode proses perebusan bahan baku (menggunakan air, CaCO3, dan kontrol) dan metode pengeringan bahan baku  (menggunakan microwave, oven, dan sinar matahari). Kombinasi proses perebusan menggunakan air dan pengeringan bahan menggunakan microwave menghasilkan yield minyak alpukat tertinggi yaitu 48,98% b/b. Sementara itu yield terendah dihasilkan pada perlakuan kontrol (tanpa perebusan) dengan pengeringan menggunakan sinar matahari yaitu 37,92% b/b. Karakteristik minyal alpukat yang dihasilkan hampir sama dengan minyak alpukat komersial dan telah memenuhi memenuhi syarat mutu minyak goreng sesuai Standar Nasional Indonesia (SNI) No. 3741:2013.
Removal of Fe (II) ions from Aqueous solution using Rice-husk Adsorbents in fixed-bed column Cut Meurah Rosnelly; Lia Meiriza - Meiriza; Husni - Husin; Muhammad - Zaki; Muhammad Aqilussalim E; Syariful - Maliki; Nurul - Aflah; Zeinhom M El-Bahy
Jurnal Rekayasa Kimia & Lingkungan Vol 16, No 2 (2021): Jurnal Rekayasa Kimia & Lingkungan (December, 2021)
Publisher : Chemical Engineering Department, Syiah Kuala University, Banda Aceh, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (593.119 KB) | DOI: 10.23955/rkl.v16i2.22274

Abstract

Rice husk has been converted into activated carbon for the adsorbent to remove the heavy metal from the aqueous solution. This study aimed to convert rice husk to activated carbon (AC) for use in the adsorption of Fe ions in a fixed-bed column. Rice husk was first pyrolyzed in an atmosphere of nitrogen gas at 400 oC, then a chemical activation method using sodium hydroxide. The rice husk activated carbon (RH-AC) was characterized using Fourier transform infrared (FTIR) and Scanning electron microscope (SEM) to identify the functional group and microstructure of carbon. The performance of the carbon was tested on the Fe removal from an aqueous solution in a continuous column. The adsorption process was carried out using Fe solution with an initial concentration of 3 mg/L as an artificial sample. The amount of carbon is 25, and 50 g were filled in an adsorber column with a diameter of 5.4 cm and height of 40 cm. SEM images revealed that the activated carbons shown with well-developed pore sizes and pore structure were produced after the chemical activation.  The FTIR absorption bands observed in the RH-AC sample confirmed the presence of hydroxyl (-OH), carbonyl, and carboxylic (-COOH) groups of RH-AC adsorbent. The highest Fe removal efficiencies were 91.9% on chemically activated carbon and column mass 50 g at 400 minutes. The overall study revealed the potential value of chemically activated RH-AC as a possible commercial adsorbent in a continuous column wastewater treatment strategy.
Pengaruh Rasio Aditif Polietilen Glikol Terhadap Selulosa Asetat pada Pembuatan Membran Selulosa Asetat Secara Inversi Fasa Cut Meurah Rosnelly
Jurnal Rekayasa Kimia & Lingkungan Vol 9, No 1 (2012): Jurnal Rekayasa Kimia & Lingkungan
Publisher : Chemical Engineering Department, Syiah Kuala University, Banda Aceh, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (216.367 KB)

Abstract

Preparation of cellulose acetate (CA) membranes with ultrafiltration process had be done by phase inversion using dimethylformamide (DMF) as solvent. Poliethylene glycol (PEG) 1450 Da, as additive, was added with 10, 20, and 30% rasio of celluose acetate. The thin film of polymer solution was immersed on water bath coagulation at room temperature. The analysis of membrane morphology structure by Scanning Electron Microscope (SEM) JSM – 5310 LV, Jeol-Japan showed the asymetric of membrane. The addition of PEG can improve the performance of the membrane. In resulting flux is higher than membranes without PEG. Increasing of PEG/CA ratio resulted in the higher flux with lower of rejection. The higher fluxes of water, dextran, and BSA are 146, 114, and 96 L/m2hr with 52,938 and 75,716% rejection for dextran and BSA.Keywords: cellulose acetate membranes, polyethylene glycol, ultrafiltration
Pengolahan Limbah Cair Laundry Menggunakan Membran Selulosa Diasetat Berbasis Selulosa Pulp Kayu Sengon (Paraserianthes falcataria) Vera Roni Setiawan; Cut Meurah Rosnelly; Darmadi Darmadi
Jurnal Rekayasa Kimia & Lingkungan Vol 9, No 3 (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 | Full PDF (263.319 KB) | DOI: 10.23955/rkl.v9i3.782

Abstract

The improvement of laundry activity brought a negative effect on the environment because laundry wastewater have a high content pollutants such as phosphate, surfactants, mineral, nitrogen, COD and other components, so the treatment is needed before being discharged into terristorial water. Laundry wastewater treatment has been conducted by membrane technology. Preparation of cellulose diacetate  membranes with ultrafiltration process had be done by phase inversion using dimethylformamide (DMF) as a solvent. The filtration experiment showed that the highest membrane flux was 77,408 L/m2.h at TMP 3 bar. While the lowest flux at TMP 1 bar was 55.649 L/m2.h. Rejection of membrane ultrafiltration for parameters of COD, phosphate, and surfactant were 67%, 72%, and 63% respectively.Keywords: cellulose diacetate membranes, laundry wastewater, flux, rejection
Transesterifikasi Minyak Biji Buta-Buta menjadi Biodiesel pada Katalis Heterogen Kalsium Oksida (CaO) Muhammad Zaki; Husni Husin, M.T.; Pocut Nurul Alam; Darmadi Darmadi; Cut Meurah Rosnelly; Nurhazanah Nurhazanah
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 | Full PDF (387.723 KB) | DOI: 10.23955/rkl.v14i1.13495

Abstract

Penelitian ini menggunakan katalis padat CaO untuk reaksi transesterifikasi minyak biji buta-buta menjadi biodiesel. Minyak biji buta-buta diekstraksi menggunakan alat press. Katalis CaO disiapkan dari cangkang kerang dengan cara dipijar pada suhu 850 oC. Sampel katalis dikarakterisasi dengan metode scanning electron microscopy (SEM) dan x-ray diffractometer (XRD). Katalis cangkang kerang memiliki ukuran partikel antara 200-2000 nm. Hal ini karena pemanasan cangkang pada 850 oC menyebabkan terjadi aglomerasi. Dari rekaman XRD teridentifikasi bahwa katalis didominasi oleh senyawa CaO dan terdapat sedikit CaCO3. Reaksi transesterifikasi dilangsungkan dalam reaktor batch dengan variasi suhu (55 oC, 60 oC, 65oC, dan 70oC), rasio metanol terhadap minyak: 3:1, 6:1, 9:1, 12:1, dan 15:1. Reaksi dilangsungkan selama 3 jam dan katalis didispersi 6 % berat dari minyak. Perolehan metil ester maksimum dicapai 96,7% pada kondisi reaksi, yaitu: molar metanol:minyak 12:1 dan suhu reaksi 65 oC. Karakteristik biodiesel hasil penelitian ini memenuhi sifat-sifat bahan bakar berkualitas tinggi sesuai dengan standar SNI dan ASTM. Proses transesterifikasi minyak biji buta-buta dan metanol menggunakan CaO sebagai katalis basa heterogen layak diaplikasikan secara komersial untuk produksi biodiesel dalam skala industri.
Co-Authors - Darmadi -, Kaseno Akhar Ilhamdi Alfina Suci Cahyani Aulia Rahmad Lubis Aziz Darwis, Abdul Darmadi Darmadi Devi Rahmanda Erliza Noor FARID MULANA Husni - Husin Husni Husin, M.T. Izzan Nur Aslam Justaman Arifin Karo karo Lia Meiriza - Meiriza M. Nasruddin Meuthia Busthan Mirna Rahmah Lubis Muhammad Aqilussalim E Muhammad Dani Supardan Muhammad Irsyad Mahadi Lubis Muhammad Zaki Mukramah Yusuf Nadia Putri Mauliza Nurhazanah Nurhazanah Nurul - Aflah Pocut Nurul Alam Pocut Nurul Alam Raiyan Soekarno Rina Hazliani Sri Mulyati Suraiya Kamaruzzaman Syariful - Maliki Syawaliah Muchtar Umi Fathanah Vera Roni Setiawan Zeinhom M El-Bahy Zuhra