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All Journal Jurnal Rekayasa Proses Jurnal Sains dan Seni ITS IPTEK The Journal of Engineering World Chemical Engineering Journal JURNAL INTEGRASI PROSES Konversi Jurnal Chemurgy Jurnal Rekayasa Proses Reka Buana : Jurnal Ilmiah Teknik Sipil dan Teknik Kimia Jurnal Tekno Insentif Jurnal Abdi Masyarakat (JAM) Jurnal Teknik Industri Terintegrasi (JUTIN) Equilibrium Journal of Chemical Engineering Jurnal Riset Teknologi Pencegahan Pencemaran Industri REACTOR : Journal of Research On Chemistry And Engineering Warta Perkaretan Jurnal Teknologi Kimia Unimal Jurnal Ilmiah Berkala Sains dan Terapan Kimia CHEMTAG Journal of Chemical Engineering JURNAL KIMIA SAINTEK DAN PENDIDIKAN Journal of Industrial Community Empowerment SAINTI: Majalah Ilmiah Teknologi Industri Jurnal Agrifoodtech Jurnal Teknologi Kimia Mineral Journal of Energy, Materials, & Manufacturing Technology Majalah Teknik Industri Communication in Food Science and Technology Maximus: Journal of Biological and Life Sciences Journal Of Chemical Process Engineering Jurnal Polimesin Jurnal Rekayasa Proses PATRIOTIK: Jurnal Inovasi dan Pemberdayaan Masyarakat Industrial Innovation
Dennis Farina Nury
Politeknik Industri Petrokimia Banten
Aerospace Engineering Agriculture, Biological Sciences & Forestry Arts 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 Economics, Econometrics & Finance Education Electrical & Electronics Engineering Energy Engineering Environmental Science Immunology & microbiology Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mechanical Engineering Social Sciences Other

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PENGARUH LAJU UMPAN MASUK DECANTER TERHADAP LOSSES WATER PHASE DAN SOLID PHASE Maulana, Akmal; Nurmalasari, Enny; Luthfi, Muhammad Zulfikar; Nury, Dennis Farina
Jurnal Teknologi Kimia Unimal Vol. 14 No. 1 (2025): Jurnal Teknologi Kimia Unimal - May 2025
Publisher : Chemical Engineering Universitas Malikussaleh

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29103/jtku.v14i1.20824

Abstract

Decanter merupakan alat yang digunakan untuk mengutip kembali kandungan minyak yang masih terdapat di dalam sludge dengan metode sentrifugal. Jika decanter tidak bekerja dengan efisien, maka kadar air, minyak, dan solid akan meningkat, yang dapat merugikan pihak pabrik. Penelitian ini bertujuan untuk mengevaluasi pengaruh laju alir umpan terhadap persentase kehilangan minyak di water phase dan solid phase pada decanter. Adapun variasi laju alir umpan yang digunakan adalah 21, 22, dan 23 ton/jam. Penelitian ini dilakukan dengan memvariasikan laju alir umpan ke dalam decanter pada 21, 22, dan 23 ton/jam. Evaluasi dilakukan untuk menentukan losses pada water phase dan solid phase dari keluaran decanter. Hasil penelitian menunjukkan bahwa losses pada solid phase tertinggi terjadi pada laju umpan 23 ton/jam dengan rata-rata selama seminggu sebesar 3,38%, sedangkan losses terendah terjadi pada laju umpan 21 ton/jam dengan rata-rata selama seminggu sebesar 3,27%. Ini menunjukkan bahwa laju umpan 21 ton/jam memiliki pemisahan antara minyak dan solid yang lebih efisien dibandingkan dengan laju umpan 23 ton/jam. Pada water phase, losses tertinggi terjadi pada laju umpan 23 ton/jam dengan rata-rata selama seminggu sebesar 0,81%, sedangkan losses terendah terjadi pada laju umpan 21 ton/jam dengan rata-rata selama seminggu sebesar 0,80%. Hasil ini sejalan dengan losses pada solid phase decanter.
Paper Waste Hydrolysis with Stepwise Sulfuric Acid Catalyst Panjaitan, Jabosar Ronggur Hamonangan; Nury, Dennis Farina; Hutabarat, Fransisco Xala; Hutabarat, Monalisa
Reka Buana : Jurnal Ilmiah Teknik Sipil dan Teknik Kimia Vol 8, No 2 (2023): EDISI SEPTEMBER 2023
Publisher : Universitas Tribhuwana Tunggadewi Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33366/rekabuana.v8i2.5023

Abstract

The need for paper results in a lot of paper waste. Paper waste, which is lignocellulosic, can be hydrolyzed using an acid catalyst to produce various cellulose degradation products. In this study, the effect of the sulfuric acid catalyst addition method on the waste paper hydrolysis process was investigated. The addition of the catalyst was carried out in three types. The Type-1 method was sulfuric acid addition in the 0th minute. The Type-2 method was sulfuric acid addition in the 0th and 30th minutes. The Type-3 method was sulfuric acid addition every 10 minutes. The results showed that the lowest residual mass of waste paper hydrolyzed was produced using the Type-3 method. This showed that the Type-3 method, sulfuric acid addition every 10 minutes, had an effect on the residual mass of the hydrolyzed sample. The Type-3 method was the most effective type of sulfuric acid catalyst addition compared to other types. On the other hand, variations in the concentration of the sulfuric acid catalyst affect the residual mass of the waste paper hydrolyzed sample, where higher sulfuric acid concentration will lower residual mass. The catalyst concentration of 2% sulfuric acid with The Type-3 addition method resulted in the highest conversion which was 38.27%.
EVALUASI KINERJA KOLOM STRIPPER PADA PROSES CO₂ REMOVAL DI UNIT AMONIA Saragih, Juro Dufan; Nury, Dennis Farina
CHEMTAG Journal of Chemical Engineering Vol 6, No 2 (2025): CHEMTAG Journal of Chemical Engineering
Publisher : Universitas 17 Agustus 1945 (UNTAG) Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.56444/cjce.v6i2.6320

Abstract

Proses produksi amonia memerlukan tahapan penghilangan karbon dioksida (CO₂) agar gas sintesis terbebas dari senyawa pengganggu yang dapat merusak katalis. Salah satu unit penting dalam proses ini adalah kolom stripper yang berfungsi untuk melepaskan CO₂ dari larutan semi-lean agar dapat digunakan kembali dalam siklus penyerapan. Penelitian ini bertujuan untuk mengevaluasi kinerja stripper berdasarkan perbandingan data desain dan data aktual yang diperoleh dari Distributed Control System (DCS) dan analisis laboratorium selama lima bulan. Evaluasi mencakup perhitungan neraca massa, neraca energi, efisiensi termal, dan persen CO₂ yang berhasil dipisahkan. Hasil studi menunjukkan bahwa efisiensi stripper mengalami fluktuasi dengan rata-rata sebesar 90,11%, yang masih dalam batas toleransi desain. Fluktuasi ini diduga disebabkan oleh variasi kondisi operasi, akumulasi fouling, serta performa peralatan yang tidak optimal. Evaluasi ini memberikan dasar untuk optimasi operasional dan pemeliharaan yang lebih baik di masa mendatang.
Sintesa dan Karakterisasi Bioplastik Dari Tandan Kosong Kelapa Sawit Dengan Modifikasi Penambahan Plasticizer Gliserol dan Sorbitol Luthfi, Muhammad Zulfikar; Miftahurrahmah; Sutri, Reni; Nury, Dennis Farina
REACTOR: Journal of Research on Chemistry and Engineering Vol. 6 No. 1 (2025)
Publisher : Politeknik ATI Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.52759/reactor.v6i1.168

Abstract

Plastic waste is a global environmental issue due to its non-biodegradable nature. One potential solution is the development of eco-friendly bioplastics derived from natural materials. This study aims to develop bioplastics based on sago starch with the addition of microfibrillated cellulose (MFC) from empty palm oil fruit bunches as a reinforcing filler to enhance mechanical properties. Additionally, plasticizers such as glycerol and sorbitol were added to improve the elasticity of the bioplastic. The plasticizer concentrations used were 1, 5, 10, 20, and 30% w/w. Characterization was conducted through mechanical property tests (tensile strength, elastic modulus, and elongation percentage), morphological analysis using SEM, and structural analysis with Fourier Transform Infrared Spectroscopy (FTIR spectroscopy). The results showed that the addition of 5% glycerol produced a tensile strength of 26.39 MPa with an elongation of 1.2%, while 20% sorbitol yielded a tensile strength of 25.35 MPa with an elongation of 6.2%. Based on the Indonesian National Standard (SNI) for plastics, the combination of sago starch and MFC with 20% sorbitol provided the best mechanical properties, with a tensile strength of 25.35 MPa and an elongation percentage of 5.6%. In conclusion, sago starch-based bioplastic with MFC from oil palm empty fruit bunches has the potential to serve as an environmentally friendly alternative to synthetic plastics
Pengelolaan Sampah Plastik Dengan Mesin Pencacah di Infrastruktur Industri Pengolahan Sampah Terpadu Asari Rahayu, Puji; Tutuka, Rachmadi; Pasaribu, Monita; Jerry, Jerry; Ikhsandy, Ferry; Luthfi, Muhammad Zulfikar; Betariani, Khairunisa; Nury, Dennis Farina; Zulkipli, Rohiman Ahmad; Nugroho , Muhammad Erwin Cahyo
PATRIOTIKA: Jurnal Inovasi dan Pemberdayaan Masyarakat Vol 1 No 1 (2025): May 2025
Publisher : Universitas Nahdlatul Ulama Sumatera Utara

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

Abstract

The increasing problem of plastic waste has become one of the biggest environmental challenges in the world today. To overcome this problem, the development of plastic shredding technology is an effective solution to support the plastic recycling process. This study aims to design and develop an efficient and environmentally friendly plastic waste shredding machine, which is able to reduce the volume of plastic waste and facilitate the recycling process. The research methodology includes identifying user needs, literature studies, developing design concepts, detailed design using software, prototyping, and testing and evaluating machine performance. The designed shredding machine has a shredding capacity of 50 kg/hour with lower energy consumption compared to existing commercial shredding machines. Consistent machine testing in producing plastic flakes with uniform sizes, which are suitable for further recycling processes. Performance analysis relates to machines that are able to process various types of plastic, including PET, HDPE, and PP, with high shredding efficiency. The developed plastic shredding machine is able to provide a practical solution for plastic waste management by optimizing the recycling process and reducing negative impacts on the environment. The development of this plastic shredding machine is expected to contribute significantly to efforts to reduce plastic waste and support environmental sustainability.
Pengolahan Kelapa Menjadi Virgin Coconut Oil (VCO) dengan Metode Fermentasi Sederhana Nury, Dennis Farina; Fahni, Yunita; Yuniarti, Reni; Achmad, Feerzet; Deviany; Variyana, Yeni
Journal of Industrial Community Empowerment Vol. 2 No. 2 (2023)
Publisher : Politeknik ATI Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.52759/jice.v2i2.215

Abstract

Coconut plant is frequently referred to as the plant of life since every part of it may be utilized and turned into a product. One of the commercial processed product by coconut is virgin coconut oil (VCO), which has many benefits to health properties. VCO is extracted from coconut milk from coconut fresh. The introduction of virgin oil (VCO) to partners aimed about VCO's advantages and development of appropriate technology that can be applied to local communities in Negeri Katon, Lampung Selatan. This community service activity program introduced fermentation method using yeast to convert coconut milk into VCO. The activity were conducted in three steps: i.e presentation of VCO process production and discussion, demonstration of making VCO together, and evaluation based on pre and post-test form results. Several analysis have been conducted including the percentage yield, density, viscosity and pH of the VCO. The evaluation of this activity was obtained from pre and post-test results. The results of the pre-test showed that among 50% the people of Negeri Katon really needs to the activity of making VCO by fermentation together. Based on the highest post-test result of 91%, it can be concluded that the VCO-making activities are very useful. Further development of activities, such as intensive practice in making VCO and training in packaging and selling VCO is very needed. Based on the results obtained, it can be concluded that the activity of making VCO by fermentation for the community of Negeri Katon is very necessary to be carried out in terms of utilizing coconut into VCO and creating business opportunities for the future.
Implementasi Pupuk Cair Organik Masaro Terhadap Produktivitas Jagung Manis di Sabah Balau Nury, Dennis Farina; Satria , Arysca Wisnu; Deviany, Deviany; Mustafa , Mustafa; Abidin, Akhmad Zainal
Journal of Industrial Community Empowerment Vol. 2 No. 1 (2023)
Publisher : Politeknik ATI Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.52759/jice.v2i1.150

Abstract

This community service activity aims to increase corn production in Sabah Balau using POCI (Special Liquid Organic Fertilizer) products from Masaro. POCI is used as an organic fertilizer and its farming produces a higher production number, higher quality product, faster production rate while its production cost is lower. On the other hand, the problem of Indonesia is that national agriculture is stuck in inorganic chemical fertilization that has an impact on accelerating the degradation of agricultural land fertility. This matter can occur due to various problems, especially the culture of using chemical fertilizers that have been going on for too long. The activities carried out include socializing about recycling organic waste with POCI Masaro, conducting outreach activities about the benefits of POCI Masaro and practicing composting for corns. The results showed the enthusiasm of the community in participating to make POCI Masaro and demonstration plots. The output of this activity: Increased corn production, increased of knowledge and skills of community in making and applying POCI Masaro on plant and motivation of farmers to independently develop alternative organic fertilizers that are in accordance with farmers' needs.
Penyuluhan dan Pembuatan Sabun Cair Berbasis Minyak Goreng Bekas di Desa Trisnomaju, Kabupaten Pesawaran, Lampung Selatan Nury, Dennis Farina; Auriyani, Wika Atro; Achmad, Feerzet; Luthfi, Muhammad Zulfikar
Journal of Industrial Community Empowerment Vol. 1 No. 1 (2022)
Publisher : Politeknik ATI Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.52759/jice.v1i1.93

Abstract

Due to the many uses of cooking oil for household needs, it generates a huge residue called waste cooking oil or jelantah. Waste cooking oil can cause health and environmental problems. The conversion of waste cooking oil will help to reduce environmental damage. One of the conversion is making the waste cooking oil into valuable product as liquid soap. Liquid soap is made from Potassium hydroxide (KOH) reaction that produces salt (soap), water and glycerin. The saponification process was produced liquid soap using hydrolysis of waste cooking oil into fatty acids and glycerol in the KOH to hydrolyze. The waste cooking oil (jelantah) can ben converted into liquid soap by using the mixture of waste cooking oil, KOH solution, water and scent oil. This study aimed to educate the housewives about the problems of using waste cooking oil repeatly and to make liquid soap with a short training in Desa Trisnomaju, Kabupaten Pesawaran, Lampung Selatan. This activity consists of discussions, demonstrations and handson practice liquid soap. The results showed the the housewives were verry happy and enthusiastic during training. It can be concluded that the housewives are good and focus in making liquid soap, were increased in survey score from pretest to post test, 59,72% to 81,67%, respectively.
Parameter pH pada Gula Cair untuk Produksi High Fructose Syrup (HFS) dari Pati Singkong Nury, Dennis Farina; Luthfi, Muhammad Zulfikar
Communication in Food Science and Technology Vol. 2 No. 2 (2023): Communication in Food Science and Technology
Publisher : Lembaga Penelitian dan Pengabdian Masyarakat, Institut Teknologi Sumatera

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35472/cfst.v2i2.1572

Abstract

Sebagai tanaman pangan pokok di beberapa daerah tropis, singkong memiliki potensi besar untuk digunakan dalam produksi gula cair seperti glukosa atau sirup fruktosa. Dengan menggunakan asam sulfat, asam klorida, hidrolisis enzimatik, atau kombinasi dari metode-metode ini, pati dapat dihidrolisis untuk menghasilkan sirup glukosa. Hidrolisis enzimatik oleh α-amylase dan glukoamilase dapat menghasilkan glukosa. Pembuatan gula cair dari pati singkong dilakukan dalam dua tahapan yaitu likuifikasi dan sakarifikasi. Pada tahapan likuifikasi didapatkan pH optimum yaitu 5 dengan konsentrasi gula reduksi tertimggi 142 gr/L dimana aktivitas enzim α-amilase bekerja pada range pH asam lemah hingga pH netral. Pada tahapan sakarifikasi didapatkan pH optimum 6 dan waktu sakarifikasi dihitung dari 0-36 jam. Salah satu faktor yang mempengaruhi proses hidrolisis enzimatik adalah pH, dimana pada proses sakarifikasi diamati pada rentang pH 3 hingga 8, didapatkan hasil optimum yaitu pada pH 5 dengan konsentrasi gula reduksi 192 gr/L.
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.
Co-Authors AA Sudharmawan, AA Abdul Halim Adelia, Putri Jesika Adna Ivan Ardian Agnesia Putri Rini Agustian, Mertza Fitra Agustina, Amelia Naomi Ahmad Rifqiyan Farohi Aji Hafiz Talaga Akhmad Zainal Abidin Akhmad Zainal Abidin, Akhmad Zainal Aldillah Herlambang Alfan Sarifudin Alfira Putri Damayanti Amelia Naomi Agustina Andhini Putri Trianita Andri Sanjaya Andri Saputra Andri Saputra Arum, Amalia Sekar Auriyani, Wika Atro Aziz, Arizal Abdul Betariani, Khairunisa Choerudin, Choerudin Damayanti Damayanti Damayanti, Alfira Putri Denanda Clarasati Puteri Desi Riana Saputri Deviany Deviany Deviany, Deviany Didik Supriyadi, Didik Diva Yustika Endrigo Chrystover Enny Nurmalasari Fahni, Yunita Fajar Dwi Febriyanto, Pramahadi Feerzet Achmad Ferry Ikhsandy Firman Ayub Fitriyani, Vira Fredy Kurniawan Hafidz Naufal Handik Hendratama Hendra Setyawan Hendri Kurniawan Hidayah , Rahmat Taufik Hutabarat, Fransisco Xala Hutabarat, Monalisa Ihsan Wiratama Ismi, Lisa Anggraini Jabosar Ronggur Hamonangan Panjaitan Janah, Dikri Uzlifah Jerry Jerry Jerry, Jerry Kurniawati, Intan Wahyuning Lisa Anggraini Ismi Maghfira Arum Lestari Mahesa Niko Manurung, Martin Sugiarto Maulana, Akmal Mayastuti, Sherina Melani Putri Miftahul Khairati Miftahurrahmah Miftahurrahmah, Miftahurrahmah Misbahul Huda Monita Pasaribu Monita Pasaribu Muhamad Iqbal Putra Muhammad Fajri Muhammad Iqbal Putra Muhammad Luthfi Muhammad Nasyarudin Iqbal Muhammad Nasyarudin Iqbal, Muhammad Nasyarudin Muhammad Zulfikar Luthfi Mustafa , Mustafa Mustafa Mustafa Nainggolan, Denny Hendrik Napitupulu, Lukas Fernando Naulina, Rosada Yulianti Ningrum, Khofifah Anggitiya Nugroho , Muhammad Erwin Cahyo Nugroho, Muhammad Erwin Cahyo Nurul Ulfa Safitri Oktavianto, Putra Okti Ulandari Oldy Fahlovi Prahmana, Rico Aditia Pramahadi Febriyanto Puji Rahayu Puji Rahayu Rahmat Taufik Hidayah Regna Tri Jayanti Reni Yuniarti Ritonga, Jhordan Rizky Ibnufaatih Arvianto Saputra, Danang Cahya Eka Saragih, Juro Dufan Satria , Arysca Wisnu Satria, Arysca Wisnu Setiadi, Tjandra Simanjuntak, Tiurmaida Gebryela Siti Zullaikah Suharto Suharto Suharto Suharto Suhartono Suhartono Suhirman Suhirman Suhirman Sutri, Reni Tamaratritania Citta Trisnantari Tampubolon, Yosi Anugrah S.M Tri Widjaja Triya Yuli Andini Tulusma Basana Simaremare Tutuka, Rachmadi Variyana, Yeni Windiastuti, Septiyana Yohanes Tri Handoko Yunita Fahni Zulkipli, Rohiman Ahmad Zullaikah, Siti