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All Journal Eksergi KOVALEN: Jurnal Riset Kimia Jurnal Kimia Riset JC-T (Journal Cis-Trans): Jurnal Kimia dan Terapannya Dalton : Jurnal Pendidikan Kimia dan Ilmu Kimia FLUIDA Fullerene Journal of Chemistry Kumawula: Jurnal Pengabdian Kepada Masyarakat International Journal of Applied Technology Research Industrial Research Workshop and National Seminar
Sihombing, Rony Pasonang
Jurusan Teknik Kimia, Politeknik Negeri Bandung
Aerospace Engineering 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 Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mechanical Engineering Physics Social Sciences Other

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RANCANG BANGUN SISTEM PENGOLAHAN AIR JERNIH DI KAMPUNG WISATA SABLON Rony Pasonang Sihombing; Agustinus Ngatin; Joko Suryadi; Retno Dwi Jayanti; Yunus Tonapa Sarungu; Robby Sudarman
Kumawula: Jurnal Pengabdian Kepada Masyarakat Vol 5, No 1 (2022): Kumawula: Jurnal Pengabdian Kepada Masyarakat
Publisher : Universitas Padjadjaran

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24198/kumawula.v5i1.35907

Abstract

Air bersih yang memadai secara kuantitas, kualitas dan kontinuitas merupakan kebutuhan penting untuk kelangsungan hidup manusia. Oleh karenanya diperlukan suatu instalasi pengolahan air untuk menunjang kebutuhan ini. Air tanah merupakan air yang belum mengalami proses pengolahan dengan kriteria kualitas air yang sudah mendekati air bersih. Metode pengolahan air yang dilakukan menggunakan metode filtrasi fisik dan kimia sebelum digunakan untuk kebutuhan sehari-hari. Jenis filter yang digunakan adalah filter benang ukuran 10 µm, filter polipropilen (PP) 10 µm  dan filter karbon aktif. Berdasarkan hasil rancangan, air yang dihasilkan pada sistem rancang bangun diantaranya adalah air dengan kualitas kesadahan 2.3 NTU, masa pakai filter benang 14 hari/bulan, filter PP 2.4 hari/bulan, dan filter karbon aktif 30 hari/bulan. Untuk kemudahan operasional, sistem rancang bangun untuk filter PP dibuat paralel 3 agar perawatan dapat dilakukan setiap minggu.
Pengaruh Konsentrasi Surfaktan Non-Ionik Terhadap Viskositas Perekat Polivinil Asetat Berbasis Air: Effect of Non-Ionic Surfactant on Water-Based Adhesive Viscosity Rony Pasonang Sihombing; Robby Sudarman; Agustinus Ngatin
KOVALEN: Jurnal Riset Kimia Vol. 6 No. 3 (2020): Edisi Desember
Publisher : Chemistry Department, Mathematics and Natural Science Faculty, Tadulako University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22487/kovalen.2020.v6.i3.15278

Abstract

Substrate combining could be done by using adhesive. In Indonesia, especially industrial field, solvent base adhesives were still being developed. This kind of adhesive was not environmental friendly and not safe handling. Therefore, Polyvinyl Acetate (PVAc) water-based adhesive was prepared as an outcome of this research as one of solution to overcome the problem above. Effect of surfactant concentration on the viscosity was aimed at this research. Semi continuous polymerization with stirring motor rates on 50 – 500 rpm was used (optional). Pressure of 1 atm, 750C temperature, 5 – 6 hours reaction time for each was used as polymerization operation in this research. Vinyl Acetate Monomer (VAM), partial hydrolysis Polyvinyl Alcohol (PVOH), water, Ammonium Persulfate (APS) were prepared as raw material. NP-10 and NP-06 were non-ionic surfactants which each concentration was varied in this research. Water-based adhesive with NP-06 concentration variation resulting in viscosity from 98 m.Pa for 0.17 %wt concentration to 213 m.Pa for 0.68 %wt concentration. While NP-10 concentration variation resulting viscosity from 143 m.Pa for 0.17 %wt to 321 m.Pa for 0.68 %wt concentration. Therefore, adhesive with NP-10 surfactant concentration variable has a higher viscosity rate than NP-06 ones. Keywords: Water-based adhesive, non-ionic surfactant, adhesive viscosity
Konversi Karat Besi Menjadi Besi (III) Sulfat dan Pemanfaatannya Sebagai Adsorpsi Pewarna Tekstil: Iron Rust to Iron (III) Sulphate Conversion and the Utilization as Textile Dye Adsoption Ngatin Agustinus; Fatimah; Widya Fitria Nur Fauziah; Rony Pasonang Sihombing
KOVALEN: Jurnal Riset Kimia Vol. 6 No. 3 (2020): Edisi Desember
Publisher : Chemistry Department, Mathematics and Natural Science Faculty, Tadulako University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22487/kovalen.2020.v6.i3.15308

Abstract

Iron rust was an iron oxide compound that was less attractive, dirty, brown in color, and could pollute the environment, causing water to turn brown. To minimize iron contamination, conversion was carried out into iron (III) sulfate which was useful as an adsorbent for textile dyes. The purpose of this study was to determine the effect of sulfuric acid concentration and volume of H2O2 10% used to convert iron rust into optimal iron (III) sulfate compounds. The method used was a laboratory experiment on a batch scale and the hydrate content in iron (III) sulfate was carried out by the gravimetric method and its ability as an adsorbent was carried out based on the adsorption of dyes using the spectrophotometric method. The results showed that a reactor filled with 3 grams of iron rust powder and 100 mL of sulfuric acid was stirred at 425 rpm at 80 0C for 30 minutes, added 15 ml 10% H2O2 followed by stirring and heating until the solution was saturated, cooled to form crystals. The crystalline yield in these conditions was the increase in sulfuric acid concentration which resulted in low process efficiency, namely 30.34% at 50% sulfuric acid concentration and 15 mL 10% H2O2. The addition of 10% H2O2 solution to 50 mL of 20% sulfuric acid solution and 3.0 grams of a carat as much as 5 mL-10 mL 10% H2O2 produced iron (III) sulfate with 26.53% process efficiency. Iron (III) sulfate is a white, light gray crystal with the chemical formula Fe2 (SO4)3.5 H2O which was a rhombic shaped crystal. and able to absorb the dye which showed that 1.0 g of iron (III) sulfate was able to absorb the highest amount of red dye in a volume of 100 mL of textile dye solution. Keywords: Iron rust, synthesis, iron (III), sulfuric acid, textile dyes
Kajian Pustaka Karakterisasi Perekat Polivinil Asetat Berbasis Air dengan Variabel Surfaktan: Water Base Polyvinyl Acetate Characterization with Surfactant Variable – a Review Rony Pasonang Sihombing; Dieni Nurul Fathiyyah; Nanda Liant Kumara; Agustinus Ngatin
KOVALEN: Jurnal Riset Kimia Vol. 7 No. 1 (2021): Edisi April
Publisher : Chemistry Department, Mathematics and Natural Science Faculty, Tadulako University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22487/kovalen.2021.v7.i1.15448

Abstract

Polyvinyl acetate (PVAc) is an applicative polymer used as an adhesive material for one to another. These polymers can be synthesized through an emulsion polymerization process. In the industrial world, the process of making adhesive still involves environmentally unfriendly organic compounds containing xylene, benzene, and toluene. Therefore, water-based adhesive was introduced as an alternative to the PVAc synthesis solution. The aim of this literature review is to identify the type of surfactants used and analyze the PVAc characterization. This literature study focuses on the characterization of water-based PVAc with non-ionic nonylphenol (NP) surfactants including: NP-06, NP-10, NP 10 + 30, NP-30 and NP-40. Another surfactant used in this literature study is anionic surfactant Sodium Lauryl Sulfate (SLS) in units of Critical Micelle Concentration (CMC) including 1 CMC, 3 CMC, 5 CMC, 10 CMC, and 15 CMC. The result is a similarity in phenomena between the two types of surfactants. There is an increase in viscosity and a decrease in the value of the particle size as the surfactant increasing concentration used. However, in terms of the particle size, there is an optimal value where the specific NP surfactant concentration produces specific particle size with grit and at the specific SLS surfactant concentration produces relatively similar particle size.
Pengaruh Asam Itakonat terhadap Properti Polimer Perekat Akrilik Berbasis Air: Effect of Itaconic Acid on the Properties of Acrylic Water Base Adhesive Polymer Rony Pasonang Sihombing; Agustinus Ngatin
KOVALEN: Jurnal Riset Kimia Vol. 7 No. 2 (2021): Edisi Agustus
Publisher : Chemistry Department, Mathematics and Natural Science Faculty, Tadulako University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22487/kovalen.2021.v7.i2.15507

Abstract

Acrylic-based polymer adhesive is a type of adhesive that can be used for pressure sensitive adhesive (PSA). Itaconic acid (IA) is a type of acid with 2 (two) OH groups which can form hydrogen bonds. The acrylic base can be used purely from its class. In some cases, however, the acrylic base can be used together with another base. Therefore acrylic-based adhesive with variable addition of itaconic acid was introduced in this study. In this application, the holding power property is one of the important parameters of a PSA. Therefore, holding power is the main parameter in this study. This research includes the preparation of tools and materials, mixing the main raw materials of acrylic monomer and itaconic acid with the types of surfactants and water, and product characterization. The polymerization process is carried out at a pressure of 1 atm with a temperature of 75°C - 80°C accompanied by stirring with a rotation rate of ± 500 rpm. The characterization of this research resulted in a PSA product with a holding power of 2 kg for 30 seconds to 620 minutes. While the resulting peel strength is 1.12 kgf / inc to 0.76 kgf / inc. Keywords: itaconic acid, acrylic PSA, holding power
Pemanfaatan Lumpur Minyak dengan Solar sebagai Energi Alternatif Bahan Bakar: Utilization of Oil Sludge with Diesel as Fuel Alternative Yunus Tonapa Sarungu; Rony Pasonang Sihombing
KOVALEN: Jurnal Riset Kimia Vol. 7 No. 2 (2021): Edisi Agustus
Publisher : Chemistry Department, Mathematics and Natural Science Faculty, Tadulako University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22487/kovalen.2021.v7.i2.15509

Abstract

Oil sludge resulting from crude oil processing in the petroleum industry could have a negative impact on the environment. Oil sludge could also be classified as hazardous waste and able to damage the environment and human health. Therefore, it was necessary to solve this issues. Oil sludge hydrocarbon utilizing to get higher value was one of solution offered by these research. In the utilization process, filtration method was used at first procedure and followed by diesel mixing at ratio 1:0.1, 1:0.2, 1:0.3, 1:0.4, and 1:0.5. The mixture was then analyzed for several parameters such as heating value, moisture content, ash content, and flashpoint. The results of heating values ranging from 5.966 calories/ gram to 7.210 calories/ gram, the flashpoint was from 38 ⁰C to 76 ⁰C, the water content was from 51.89% to 54.52%, the ash content was from 12.3% to 18.03%. The results showed that utilization of oil sludge could be used as liquid fuel alternative energy. Keywords: oil sludge, energy alternative, liquid fuel
Konversi Seng Dari Limbah Baterai Zn-C Menjadi Senyawa Seng Sulfat Agustinus Ngatin; Rony pasonang sihombing
JC-T (Journal Cis-Trans): Jurnal Kimia dan Terapannya Vol 5, No 2 (2021)
Publisher : State University of Malang or Universitas Negeri Malang (UM)

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (289.004 KB) | DOI: 10.17977/um0260v5i22021p013

Abstract

Baterai seng-karbon terdiri dari seng (Zn) tempat karbon (C) yang diselubungi mangan dioksida (MnO2) dan amonium klorida (NH4Cl) yang berupa pasta. Baterai Zn-C merupakan baterai primer yang  akhirnya akan dibuang sebagai limbah. Limbah baterai Zn-C mengandung limbah B3 yang membahayakan lingkungan. Untuk mengurangi limbah B3 ini dilakukan konversi pelat seng menjadi senyawa seng sulfat yang bermanfaat. Tujuan penelitian ini adalah menentukan jumlah asam sulfat yang diperlukan untuk mengkonversi  pelat seng menjadi seng sulfat dan dan efisiensi persen hasilnya. Proses konversi meliputi pre-treatment, pelarutan seng dalam bervariasi konsentrsi asam sulfat (5%, 10%, 15%, 20% , 25%, dan 30%) dalam volume 80 mL, pengadukan dengan 450 rpm,  dan pemanasan,  filtrasi,  dan kristalisasi. Kristal seng sulfat hepta hidrat terbentuk pada suhu ruangan. Hasil maksimum dicapai pada konsentrasi asam sulfat 30% dengan rasio seng dan asam sulfat 1: 1 dengan sedikit asam sulfat berlibih. Kondisi tersebut kristal ZnSO4.7H2O dihasilkan  sekitar 18,39 gram. dengan efisiensi. 83,71%.
Studi Literatur Pengaruh Pirolisis, Jenis Adsorban serta Aktivator dalam Karakterisasi Asap Cair Rony Pasonang Sihombing; Keryanti Keryanti; Fitria Yulistiani; Ayu Ratna Permanasari
Jurnal Kimia Fullerene Vol 6 No 1 (2021): Fullerene Journal of Chemistry
Publisher : Fakultas Matematika dan Ilmu Pengetahuan Alam

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37033/fjc.v6i2.234

Abstract

Liquid smoke is a preservative solution that can be used safely. This grade 1 product can be also used as food preservative. The aim of this article is to discuss and examine the previous experiment’s results by literature review. The outcome of this article is expected to be regenerated by other research using the existing variable which is discussed on this article or using new variable. Based on the result. There are some variables that effect the final quality of liquid smoke. Some of them are pyrolisys temperature, pyrolisys time, adsorbant type and activator type. Pyrolisys temperature used was arround 250 °C – 300 °C with resulted pH 1.41 to 2.25. While for pyrolisys temperature was arround 4 – 5 hours with phenol content arround 3.04% to 4.08%. The type of adsorbant used was zeoilte and quartz sand, which the acid total having both increment and decrement phenomenon. Activator type used were salt activator such as NaCl , NaHCO, CaCl2, Na2SO4 and base activator (NaOH) which producing the most percent acid total.
PENGARUH KONSENTRASI GARAM TERHADAP VISKOSITAS SABUN CAIR BERBASIS SURFAKTAN ANIONIK Robby Sudarman; Alisya Nurbaits; Rony Pasonang Sihombing
Dalton : Jurnal Pendidikan Kimia dan Ilmu Kimia Vol 4, No 1 (2021): (Mei) Dalton : Jurnal Pendidikan Kimia dan Ilmu Kimia
Publisher : Universitas Islam Kalimantan MAB Banjarmasin

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (300.722 KB) | DOI: 10.31602/dl.v4i1.4875

Abstract

Sabun cair merupakan salah satu jenis pembersih yang cukup banyak digunakan di dalam aspek kehidupan. Material ini berfungsi sebagai bahan penghilang kotoran dan lemak pada berbagai perkakas. Tujuan dilaksanakannya penelitian ini adalah untuk dasar pengaturan viskositas sabun cair bagi penelitian-penelitian selanjutnya. Surfaktan Sodium Lauril Sulfat (SLS) digunakan sebagai bahan baku utama dan garam NaCl sebagai pengatur viskositas. Konsentrasi NaCl yang digunakan dalam penelitian ini dimulai dari 0.45 % wt hingga 2.2% wt. Metode yang digunakan adalah metode reaksi batch. Hasil penelitian menunjukkan terjadi peningkatan viskositas sabun cair dari 300 cps hingga 5000 cps. Oleh karenanya, pengaturan viskositas dapat dilakukan dengan menggunakan konsentrasi garam sesuai kebutuhan.
Modifikasi Homopolimer Poli (Vinil Asetat) dengan Variabel Hidrofobisitas Emulsifier untuk Aplikasi Perkayuan Rony Pasonang Sihombing; Agustinus Ngatin
Fluida Vol 12 No 2 (2019): FLUIDA
Publisher : Jurusan Teknik Kimia, Politeknik Negeri Bandung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35313/fluida.v12i2.1620

Abstract

Perekat (lem) merupakan salah satu media yang sangat penting untuk menyatukan kayu yang satu dengan lainnya dan berbasis pada pelarut. Umumnya, pelarut yang digunakan adalah pelarut organik golongan BTX (Benzena, Toluene, dan Xylene) yang merupakan pelarut berbahaya bagi lingkungan dan kesehatan. Untuk itu perekat berbasis air yang berbahan baku vinil asetat akan diperkenalkan pada penelitian ini. Pengaruh hidrofobisitas surfaktan yang digunakan terhadap viskositasnya dijadikan tujuan dari penelitian ini. Vinil asetat dan polivinil alkohol digunakan sebagai bahan baku. Asam tartrat dan amonium persulfat digunakan sebagai bahan pendukung proses. Proses polimerisasi dilakukan di dalam reaktor dilengkapi kondensor, termometer, dan motor pengaduk dengan laju 50 – 500 rpm (opsional, hingga terbentuk vorteks). Water bath dipanaskan pada tekanan 1 atm dan suhu sekitar 750C. Perekat yang dihasilkan dilakukan uji viskositas dan total NVC . Hasil penelitian adalah sintesis perekat melalui proses polimerisasi vinil asetat dengan polivinil alkohol berhasil dibuat, dengan hasil perekat tanpa menggunakan surfaktan memiliki viskositas (13.400 cps) di antara NP-10 (14.500 cps) dan NP-06 (5.500 cps), sehingga perekat dengan surfaktan NP-10 memiliki viskositas paling tinggi dengan nilai 14.500 cps dari ketiga perekat yang dihasilkan.
Co-Authors Adi Rizki Nugraha Ageng Priyambudi Ahmad Fauzan Ahmad Fauzan Alfiana Adhitasari Alfonsius Perdija Tamba Alisya Nurbaits Alizza Asry Zafarina Althafa Muntaqin Angelina Putri Angely Luviana Angely Luviana Anisa Nidaulhusna Annisa Nurlatifah Ari Marlina Bambang Soeswanto Bambang Soeswanto Bambang Soeswanto C. Yudha Hidayatulloh Calvin Aditya Renata Cecep Yudha Hidayatullah Dava Maulana Malik Desti Fitriani Dieni Nurul Fathiyyah Emma Hermawati Emma Hermawati Muhari Emma Hermawati Muhari Faradila Anindita Fatimah Fauzan, Rizky Idham Kholid Ibrahim Ikhsan Akmal Alatif Intan Salsabila Isma Afifah Ramadhani Iva Najwa Salsabilla Jasinta Putri Alamsari Jayanti, Retno Dwi Joko Suryadi Keira Khalisha Keryanti, Keryanti Lutfiah Rahmasari Muchamad Raihan Surya Rusmana Muhammad Fadly Wiryawan Kautsar, Muhammad Zikri Ramadhan Muhari, Emma Hermawati Mukhtar Gozali Nanda Liant Kumara Naufal Alip Cahya Ramadan Ngatin, Agustinus Nidaa’ Rihhadatul ‘Aisya Komara Nina Puspita Ninik Lintang Edi Wahyuni Nurcahyo Nurcahyo Nurcahyo Paramitha, Tifa Permanasari, Ayu Ratna Putri Utami Dita Cahya Rafila Chika Azzahra Rahma Nurulgina Rahma Puspa Permatasari Ramadhana Suci Fajriati Randi Reynaldi Restu Adji Alif Asyari Restu Adji Alif Asyari Retno Indarti Retno Indarti Rijal Muyasar Fahmi Rispiandi Rispiandi Robby Sudarman Salsabila Nisrina Junaedi Santy Nurhasanah Shafira Salsabila Solehuddin Al-Ayubi Solehudin Al-Ayubi Sri Puji Rahmawati Sudrajat Harris Abdulloh Suminar, Dian Ratna Suryadi, Joko Tiara Devita Risnandar Tri Hariyadi Unung Leoanggraini Vira Rizki Anisa Wahyu Wibisono Widya Fitria Nur Fauziah Wina Maulida Yulistiani, Fitria Yunus Tonapa Sarungu Yusmardhani Yusuf Yusmardhany Yusuf Yusmardhany Yusuf Yusmardhany Yusuf