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All Journal Proceedings of Annual International Conference Syiah Kuala University - Life Sciences & Engineering Chapter The Journal of Pure and Applied Chemistry Research Jurnal IPTEK Panrita Abdi - Jurnal Pengabdian pada Masyarakat Indonesian Journal of Chemical Analysis (IJCA) Jurnal Sains dan Teknologi Reaksi Industrial Engineering Journal (IEJ) International Journal of Engineering, Science and Information Technology Journal of Renewable Energy, Electrical, and Computer Engineering Chemical Engineering Journal Storage (CEJS) Jurnal Teknologi Kimia Unimal
Zulnazri Zulnazri
Chemical Engineering, Malikussaleh University, Kampus Bukit Indah, Lhokseumawe
Astronomy 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 Education Electrical & Electronics Engineering Energy Engineering Environmental Science Industrial & Manufacturing Engineering Library & Information Science Materials Science & Nanotechnology Mathematics Mechanical Engineering Medicine & Pharmacology Physics Social Sciences Transportation Other

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PERBANDINGAN KETEBALAN FILLER TERHADAP KEKUATAN FLEKSURAL DAN IMPACK PADA KOMPOSIT YANG DIBUAT DARI LIMBAH TERMOPLASTIK PET, PP, DAN PE Suryani, Suryati; Zulnazri, Zulnazri
Jurnal Sains dan Teknologi Reaksi Vol 11, No 2 (2013): Jurnal Sains dan Teknologi Reaksi
Publisher : Politeknik Negeri Lhokseumawe

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30811/jstr.v11i2.160

Abstract

Penelitian ini melaporkan tentang perbandingan kekuatan fleksural dan impack terhadap komposit Polietilenateraptalat (PET), Polipropilen (PP) dan Polietilen (PE) yang menggunakan filler fiber glass dengan berbagai variabel. Dimana untuk komposit PET menggunakan softenning agent o-klorofenol sedangkan untuk PP dan PE menggunakan waiting agent xilena. Penelitian ini dilakukan dengan menggunakan metode pengepresan dengan hot press, temperatur leleh maksimum yang didapatkan untuk masing-masing bahan termoplastik yaitu PET 265 oC, PP 167 oC, dan PE 135 oC. Nilai fleksural yang terbaik pada masing-masing komposit diperoleh pada PET - 3 lapis serat 533.33 Mpa, PP - 2 lapis serat 566.66 Mpa, dan PE - 2 lapis serat 600,00 Mpa. Untuk uji impact diperoleh nilai terbaik masing-masing pada komposit PET - 3 lapis serat 25,5 Mpa, komposit PP-2 lapis serat 29,5 Mpa, dan komposit PE - 2 lapis serat 21,5 Mpa.Kata kunci : Komposit, Poplietilenteraptalat, Polipropilen, Polietilen, Fiber Glass
Modification of Recycled HDPE Composite with OPEFB Microfibers Through the Melt Blend Extruder Process Zulnazri, Zulnazri; Dewi, Rozanna; Sylvia, Novi
Jurnal IPTEK Vol 24, No 2 (2020)
Publisher : LPPM Institut Teknologi Adhi Tama Surabaya (ITATS)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31284/j.iptek.2020.v24i2.928

Abstract

Oil palm empty fruit bunches (OPEFB), have not many been used as a have economic value material. OPEFB fiber content can be using as a filler to composites fabrication. The fiber contained in the OPEFB can be increase composites quality because have high thermal and mechanical properties. SEM analysis shows that OPEFB waste with a size of 63 and 90 ?m is suitable to be use as a filler because of the compatibility of the fiber and matrix matrix. As with the results of the DSC analysis, the melting point of HDPE-TKKS composite with 63 ?m fiber size reaches 133.58 0C while the melting point of HDPE-TKKS composite with 90 ?m fiber size reaches 134.41 0C. The FTIR test results also show that the indications of the two samples have the same chemical composition, namely lignicellulose. The best tensile strength is obtained which is equal to 21.11 MPa and the force required to break the composite is 391.56 N, these results were obtained from composites with a ratio of 60: 40 (matrix : filler) and 90 µm fiber size.Key words: Plastic, HDPE, fiber, OPEFB, composite 
Hydrolysis of coffee pulp as raw material for bioethanol production: sulfuric acid variations Mawaddah, Mawaddah; Setiawan, Adi; Zulnazri, Zulnazri; Putri, Almia Permata; Khan, Naseer A.; Jain, Vishal
Journal of Renewable Energy, Electrical, and Computer Engineering Vol 2, No 1 (2022): March 2022
Publisher : Institute for Research and Community Service, Universitas Malikussaleh, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29103/jreece.v2i1.6382

Abstract

Indonesia has enormous biomass resources due to its land territory is mostly surrounded by forests and agricultural area. One of the main agricultural commodities is Gayo Arabica coffee. Coffee agro-residue such as coffee-pulp contains glucose, organic matter, protein, nitrogen and high minerals. Therefore, coffee pulp can be a potential raw material for bioethanol production. In order to develop an effective technology for bioethanol production from coffee-pulp, it is necessary to investigate in early the way of glucose can be effectively prepared. In this preliminary investigation, glucose products ware prepared using two methods, i.e. method-I under several main-stages including extraction, delignification, and hydrolysis. While, under method-II, the sample was directly hydrolyzed at 100°C for 4 h. Under both methods, hydrolysis process to get glucose was performed by adding sulfuric acid (H2SO4) at various concentrations (8 wt.%, 10 wt.% and 12 wt.%). Based on analysis results, the highest glucose level, i.e. 17 % was obtained from method-II by adding 8 wt.% sulfuric acid. The less the amount of sulfuric acid added, the higher the glucose level produced. No difference in pH was found from both methods. The color of glucose produced under method-I is clearer compared to those prepared under method-II.
Comparison of Composite Quality from PP Plastic with Recycled HDPE Through The Screw Extruder Process Z Zulnazri; W Atmaja; S Maliki; A Muarif; F Noviansyah; C Ramadhan
International Journal of Engineering, Science and Information Technology Vol 1, No 2 (2021)
Publisher : Master Program of Information Technology, Universitas Malikussaleh, Aceh Utara, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (661.685 KB) | DOI: 10.52088/ijesty.v1i2.123

Abstract

This study examines the composite quality of PP and HDPE plastic waste materials using Microfiber Oil palm empty fruit bunches (OPEFB) as filler, the fiber used is 90 µm. The ratio of matrix: filler used is 60:40 and 70:30 for each type of PP and HDPE polymer. The method used is a melt blending screw extruder, where plastic and fiber materials are dissolved with a compatibilizer and then melt blended in an extruder by providing temperatures of 160 and 170 oC. Tensile tests showed the strength of the PP composite with a filler ratio of 60:40 and 70:30, respectively, of 313.25 N and 336.35 N, while the HDPE composite with a filler ratio of 60:40 and 70:30, respectively are 392.93 N and 187.90 N. The maximum force required to break HDPE composites reaches 21.10 Mpa while for PP composites it reaches 18.56 Mpa. From the morphology of the PP and HDPE composite samples, the overall surface structure of HDPE looks regular with a width from 1 to 13.5 mm. The PP composite shows a uniform and regularly arranged surface structure and the bond between the fibers and the filler looks more compatible but the surface pores are rougher. Heat resistance can be seen from the melting point of PP composites which can reach 163.81oC while HDPE composites only reach 134.21oC.
High density polyetylene (HDPE) - oil palm empty fruit bunch filled micro composites using melt blending process . ZULNAZRI; . SURYATI; . AZHARI; B. WIRJOSENTONO; HALIMATUD DAHLIANA
Proceedings of The Annual International Conference, Syiah Kuala University - Life Sciences & Engineering Chapter Vol 4, No 1 (2014): Engineering
Publisher : Syiah Kuala University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (641.19 KB)

Abstract

In this research,  high density  polyetylene (HDPE) reinforced oil palm empty fruit bunch fiber micro composites to improve the mechanical properties were prepared using melt blending and hot press technique. Oil palm empty fruit bunch fiber as a filler reduces in sizes 63, 75, 90, and 106 µm.  Oil palm empty fruit bunch fiber were mixed with in 10 mL MAPE 8% (in xylene) solution up evenly. The variation composition ratio of HDPE in filler is : (80: 20, 70:30 60:40, 50:50). The good results showed that composite boards are tested viable filler and matrix ratio 30%:70%, 3.969 to 12.243 Mpa of tensile strength, the value of the melting point (Tm) of 400.05 to 497, 07oC for thermal properties, FT-IR analysis results indicate that the groups contained in the matrix and the filler is still present in the composite board products.The SEM photograph tests showed that the best products are the smallest filler size is 63 µm, and 4943.4 J/m2 ofImpact strength test obtained. The results of this study can be applied as part of an electronic element and the casing, because high heat resistance, is a semiconductor, not easily broken and durable
Temperature Effect of Crystalinity in Cellulose Nanocrystal from Oil Palm Empty Fruit Bunch (OPEFB) using Sonication-Hydrothermal Methods Zulnazri Zulnazri; Fika Anjana; Achmad Roesyadi
The Journal of Pure and Applied Chemistry Research Vol 6, No 1 (2017): Edition of January - April 2017
Publisher : Chemistry Department, The University of Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (925.99 KB) | DOI: 10.21776/ub.jpacr.2017.006.01.296

Abstract

Production of cellulose nanocrystals (CNCs) from cellulose of oil palm empty fruit bunches (OPEFB) have been done. The delignification of OPEFB was mixed with 17,5% NaOH and carried out in the three-neck flask with refluxed for 2 hour at 80oC. Further the suspension was bleached with NaOCl 2% for 1 hour at 70oC. Then, to produce CNCs, Cellulose was firstly sonicated for 30 minutes at 40oC. After that cellulose was hydrolized at hydrothermal reactor for 0,1,2,3,4,5, hours at 110 and 120oC respectively. After filtration and washing, CNCs was analyzed by X-Ray Diffraction and the result shows that the grade of the highest CNCs crystalinity at consentration of HCL 2 M at a temperature of 110oC with reaction time of 2 hours is equal to 75.87%.  It can be concluded that sonication-hydrothermal can increase the grade of crystalinity of cellulose nanocrystal.
Modification of Recycled HDPE Composite with OPEFB Microfibers Through the Melt Blend Extruder Process Zulnazri Zulnazri; Rozanna Dewi; Novi Sylvia
Jurnal IPTEK Vol 24, No 2 (2020)
Publisher : LPPM Institut Teknologi Adhi Tama Surabaya (ITATS)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31284/j.iptek.2020.v24i2.928

Abstract

Oil palm empty fruit bunches (OPEFB), have not many been used as a have economic value material. OPEFB fiber content can be using as a filler to composites fabrication. The fiber contained in the OPEFB can be increase composites quality because have high thermal and mechanical properties. SEM analysis shows that OPEFB waste with a size of 63 and 90 ?m is suitable to be use as a filler because of the compatibility of the fiber and matrix matrix. As with the results of the DSC analysis, the melting point of HDPE-TKKS composite with 63 ?m fiber size reaches 133.58 0C while the melting point of HDPE-TKKS composite with 90 ?m fiber size reaches 134.41 0C. The FTIR test results also show that the indications of the two samples have the same chemical composition, namely lignicellulose. The best tensile strength is obtained which is equal to 21.11 MPa and the force required to break the composite is 391.56 N, these results were obtained from composites with a ratio of 60: 40 (matrix : filler) and 90 µm fiber size.Key words: Plastic, HDPE, fiber, OPEFB, composite 
PENERAPAN MANAJEMEN PENJADWALAN PADA PERKEBUNAN DAN USAHA PENYULINGAN MINYAK SEREH WANGI: Pengaruh Penerapan Manajemen Penjadwalan Terhadap Laju Produksi Minyak Sereh Wangi Adi Setiawan; Khairul Anshar; Zulnazri; Subhan
Panrita Abdi - Jurnal Pengabdian pada Masyarakat Vol. 5 No. 4 (2021): Jurnal Panrita Abdi - Oktober 2021
Publisher : LP2M Universitas Hasanuddin

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20956/pa.v5i4.12182

Abstract

KM.6 Village is a village where most of its area functions as oil palm, rubber, and areca nut plantations. Citronella oil farmer community in Kec. Simpang Keuramat is the driving farmer who has initiated to grow fragrant lemongrass as one of the essential oil raw materials. The processing of fragrant lemongrass leaves into citronella oil significantly increases the economic value. In the field, things that affect the quality and quantity of citronella oil produced are found because farmers, as workers, are unskilled and inexperienced in the refining process and unscheduled harvesting and refining operations. To improve this situation, guidance was carried out as a form of community service from Malikussaleh University. The implementation of this service activity is by providing counseling and assistance in making harvest and distillation schedules. The scheduling guidance aims to produce more citronella oil. More citronella oil can be achieved by minimizing idle time, thereby increasing the effectiveness of farmers and workers, which leads to increased productivity of citronella oil refining. From the changes in harvest and production scheduling made, there was an increase in the yield of citronella oil refined by 6% for one month planning period. The main hope of this activity is to improve the welfare of local farming communities by cultivating and processing fragrant lemongrass plants so that they can earn a living and fulfill their proper needs. --- Desa KM.6 merupakan desa yang sebagian besar wilayahnya difungsikan sebagai perkebunan sawit, karet, dan pinang. Masyarakat petani minyak sereh wangi di Kec. Simpang Keuramat merupakan petani penggerak yang menginisiasi menanam tanaman sereh wangi sebagai salah satu bahan baku minyak atsiri. Proses pengolahan daun sereh wangi menjadi minyak sereh wangi meningkat nilai ekonomis secara signifikan. Namun, kualitas dan kuantitas minyak sereh wangi yang dihasilkan kurang baik karena petani tidak terampil dan tidak berpengalaman dalam proses penyulingan serta pelaksanaan panen dan penyulingan yang tidak terjadwal. Untuk memperbaiki situasi tersebut, maka dilaksanakan bimbingan penjadwalan panen dan produksi sebagai bentuk pengabdian masyarakat. Pelaksanaan kegiatan pengabdian ini dilakukan dengan memberikan penyuluhan dan pendampingan pembuatan jadwal panen dan penyulingan. Bimbingan penjadwalan yang dilakukan bertujuan menghasilkan minyak sereh wangi dengan kuantitas yang lebih banyak. Hasil yang lebih banyak dapat diraih dengan meminimalisir waktu kosong (idle time) sehingga meningkatkan efektivitas petani dan pekerja yang berujung pada peningkatan produktivitas penyulingan minyak sereh wangi. Dari perubahan penjadwalan panen dan produksi yang dilakukan, terjadi penambahan hasil penyulingan minyak sereh wangi sebanyak 6% untuk periode perencanaan satu bulan. Harapan utama dari kegiatan ini adalah meningkatkan kesejahteraan masyarakat petani lokal dengan budidaya dan pengolahan tanaman sereh wangi sehingga mendapatkan penghidupan serta pemenuhan kebutuhan yang layak.
Perbandingan Ketebalan Serat Terhadap Tensile Strength pada Komposit Plastik Daur Ulang(PET,PP DAN PE) dengan Menggunakan Penguat Fiber Glass Zulnazri Zulnazri
Industrial Engineering Journal Vol 2, No 2 (2013)
Publisher : Faculty of Engineering, Universitas Malikussaleh

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.53912/iejm.v2i2.78

Abstract

Penelitian ini memaparkan tentang perbandingan kualitas komposit yang diolah dari limbah plastik Polietilenateraptalat (PET), Polipropilen (PP) dan Polietilen (PE) dengan menggunakan penguat fiber glass dan bahan pelunak softenning agent o-kloro fenol serta xilena. Penelitian ini dilakukan di laboratorium USU dengan menggunakan metode pengepresan dengan hot press. Temperatur leleh maksimum yang didapatkan untuk masing-masing limbah plastik tersebut yaitu PET 265 oC, PP 167 oC, dan PE 135 oC. Tensile Strenght yang terbaik diperoleh terhadap masing-masing komposit antara lain, untuk komposit PET - 1 lapis serat 121.70 Mpa, PET – 2 lapis serat 209.40 Mpa, PET - 3 lapis serat 394,96 Mpa, sedangkan untuk komposit PP – 1 lapis serat 142.50 Mpa, PP - 2 lapis serat 254,40 Mpa, PP - 3 lapis serat 197.50 Mpa, serta untuk komposit PE - 1 lapis serat 110.00 Mpa, PE - 2 lapis serat 122.20 Mpa, komposit PE - 3 lapis serat 227,5 Mpa.
Hydrolysis of coffee pulp as raw material for bioethanol production: sulfuric acid variations Mawaddah Mawaddah; Adi Setiawan; Zulnazri Zulnazri; Almia Permata Putri; Naseer A. Khan; Vishal Jain
Journal of Renewable Energy, Electrical, and Computer Engineering Vol 2, No 1 (2022): March 2022
Publisher : Institute for Research and Community Service, Universitas Malikussaleh, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29103/jreece.v2i1.6382

Abstract

Indonesia has enormous biomass resources due to its land territory is mostly surrounded by forests and agricultural area. One of the main agricultural commodities is Gayo Arabica coffee. Coffee agro-residue such as coffee-pulp contains glucose, organic matter, protein, nitrogen and high minerals. Therefore, coffee pulp can be a potential raw material for bioethanol production. In order to develop an effective technology for bioethanol production from coffee-pulp, it is necessary to investigate in early the way of glucose can be effectively prepared. In this preliminary investigation, glucose products ware prepared using two methods, i.e. method-I under several main-stages including extraction, delignification, and hydrolysis. While, under method-II, the sample was directly hydrolyzed at 100°C for 4 h. Under both methods, hydrolysis process to get glucose was performed by adding sulfuric acid (H2SO4) at various concentrations (8 wt.%, 10 wt.% and 12 wt.%). Based on analysis results, the highest glucose level, i.e. 17 % was obtained from method-II by adding 8 wt.% sulfuric acid. The less the amount of sulfuric acid added, the higher the glucose level produced. No difference in pH was found from both methods. The color of glucose produced under method-I is clearer compared to those prepared under method-II.
Co-Authors . AZHARI . Suryati . Wusnah A Muarif Achmad Roesyadi Adi Setiawan Adriyan Jondra Agam Muarif Alfathan Anshori Almia Permata Putri Almia Permata Putri Andrie Kurniawan Indra Angga Tri Agusna PA Anggi Dwi Safitri Annisa Ramadina Azhari Azhari Azhari Azhari B. WIRJOSENTONO C Ramadhan Chintiara Desriani Desma Rina Dewi Lestari Dwi Pratiwi Eddy Kurniawan Eddy Kurniawan Eddy Kurniawan Eki Supratiwi Evi Maulida F Noviansyah Faisal Faisal Faisal Faisal Fika Anjana HALIMATUD DAHLIANA Iqbal Kamar Iqbal Kamar Ishak Ibrahim Ishak Ishak Ishak Ishak Ishak Ishak Jain, Vishal Jalaluddin Jalaluddin Jalaluddin Jalaluddin Jalaluddin Jalaluddin Jalaluddin Jalaluddin Jalaluddin Jalaluddin Jalaluddin Jalaluddin Khairul Anshar Khan, Naseer A. Lamkaruna Rizki Lidia Manik Lukman Hakim Lukman Hakim Lukman Hakim M syarief Hidayatullah M. Asyabul Zikki Mahfuddara Mahfuddara Masrullita Masrullita Masrullita Masrullita Mawaddah Mawaddah Mawaddah Mawaddah, Mawaddah Medyan Riza Meriatna Muammar Khadafi Muarif, Agam Muhammad Ikhwanul Adha Muhammad Muhammad Muhammad Muhammad Muhammad Muhammad Muhammad Muhammad Mutiara Pujana Pujana Nabila Adhani Narul ZA Naseer A. Khan Nasrul ZA Nasrul Za Za Novi Sylvia Novi Sylvia Nur Annisa Putri, Almia Permata Rafika Rafika Rahma Daniati Raudhatul Ulfa Rizka Mulyawan Rizka Nurlaila Rizka Nurlaila Rizka Nurlaila Rizzki Andira Rozanna Dewi Rozanna Dewi Rozanna Dewi Rozanna Dewi, Rozanna S Maliki Samsul Bahri Seli Novianna Brutu Siti Aishah Hasbullah siti hardiana daulay Sri Dea Varissa Sry Rahmadani Sry Wahyuni Damanik Subhan A Gani Sulastri Sulastri Sulhatun Sulhatun Sulhatun Sulhatun Sulhatun Sulhatun Sulhatun Sulhatun Sulhatun Sulhatun Suryani, Suryati Syamsul Bahri Syamsul Bahri Syamsul Bahri Syamsul Bahri Vishal Jain W Atmaja Waizul Fahri Purba Wawan Atmaja Willy W Yopi Aji Akbar Zahrol Hilmi Zainuddin Ginting