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All Journal Jurnal Sains dan Teknologi Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Jurnal Sains dan Teknologi: Jurnal Keilmuan dan Aplikasi Teknologi Industri
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Model Kesetimbangan Adsorpsi Zat Warna Direct Brown Dengan Menggunakan Abu Terbang (Fly Ash) Batubara Sudung Sugiarto Siallagan; Rozanna Sri Irianty; Zultiniar Zultiniar
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 6 (2019): Edisi 1 Januari s/d Juni 2019
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains

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Abstract

The Increasing use of dyes in various industries causes environmental problems that must be addressed. Various methods have been done to reduce the dye waste, one of which is adsorption. Using of inexpensive and easily obtained adsorbents is one of the considerations in choosing the type of adsorbent used. The purpose of this research was to determine the ability of activated fly ash with HCl by adsorbing Direct Brown dyes at equilibrium with variations in concentration of dyes and adsorption temperature and determining the adsorption equilibrium model. This research was carried out by varying the concentration of dyes (10,20, and 30, ppm) and the adsorption temperature (27, and 37, oC). The result showed that the best temperature of adsorbent for adsorbing Direct Brown at 140 minutes was 37 oC with concentration of dyes 30 ppm with mass of adsorben 2 gram. And 96,59% of adsorption efectiveness. The adsorption mechanism meets the FreundLich isotherm model with a values of R2 equal to 1. The equilibrium curve Qe vs Ce showed that equilibrium model is freunlich model with smallest error correction. Key Words : adsorption, activation, dye waste, fly ash, Direct Brown.
Pemanfaatan Tanah Lempung Untuk Menurunkan Konsentrasi Logam Pb Dan Cr Dari Limbah Cair Industri Percetakan Koran Regina Giantika; Shinta Elystia; Zultiniar Zultiniar
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 2, No 2 (2015): Wisuda Oktober Tahun 2015
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains

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Characteristic of newspaper printing industry waste water has never been tested before, because there is still no waste water monitoring in an integerated way. This research utilizing clay to reduce heavy metal content of Cr contained in the waste water of newspaper printing industry. Preliminary analysis for Cr in waste water showed concentrations of these parameters exceed waste water quality standards of PERMENLH/5/2014. This study uses an ion exchange column with 5 cm diameter and 80 cm of height. The medium used is liquid waste newspaper printing and activated clay with a solution of H2SO4 2 M. The variation used is the calcination temperature is 200, 300, 400, and 500◦C and flow rate used is 2,7; 4; dan 5,3 ml/dt. The initial concentration Cr6+ ion is 0.838 mg/L. After processing the decline occurred in the ion concentration Cr6+ in every variation that is 0.334 to 0.582 mg/L. These results indicate that ion exchange method using activated clays are capable of removing concentration Cr6+ ion on wastewater printing. Overall, the variety used in this study to give effect to decreased levels of chromium and Lead in wastewater printing, also evidenced in Cr6+ ion removal efficiency ranged between 60.2% - 30.6%. KTK value of the clay is greater than the value of KA clay. Proving that the clays have a greater ability as compared to the ion exchange resin as an adsorbent.  Keywords: printing waste water, ion exchange, activated clay, temperature calcination and flow rate, KTK and KA.
Kinetika Adsorpsi Pada Penjerapan Ion TImbal (Pb+2) Terlarut Dalam Air Menggunakan Partikel Tricalcium Phosphate Indah Fitriani; Ahmad Fadli; Zultiniar Zultiniar
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 3, No 1 (2016): Wisuda Februari Tahun 2016
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains

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One of the heavy metals can pollute the waters is metal ion of Pb2+. Concentration of ions Pb2+ can be removed by adsorption method. The purposes of this research are to observe the effect of stirring rate and concentration on the adsorption of metal ions Pb2+ using adsorbents tricalciumphsphate (TCP) and determine a suitable adsorption kinetics model. Pb2+ solution (2,736 mg / L, 8,546 mg / L and 14,619 mg / L) of 500 mL were added 1 g of TCP in a glass beaker while stirred with variation of rate (100 rpm, 200 rpm and 300 rpm) at a temperature of 30oC. Pb2+ solution was taken at a certain time, then the solution filtered and analyzed by atomic absorption spectrophotometer (AAS). The result showed that rate of adsorption increased with concentration of adsorbat and stirring rate. Minimum constant value of adsorption kinetic was 0,865 g/mg.min obtained at adsorbate concentration of 2,736 mg/L and stirring rate of 100 rpm. Whereas maximum value of adsorption kinetics constant 3.045 g / mg.min obtained at a concentration 14.619 mg / L stirring rate 300 rpm.Key words : Kinetic, Adsorption, Timbale, Tricalcium phosphate
Sintesis Dan Karakterisasi Hidroksiapatit Dari Cangkang Kerang Darah Dengan Proses Hidrotermal Variasi Suhu Dan pH Bona Tua; Amun Amri; Zultiniar Zultiniar
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 3, No 2 (2016): Wisuda Oktober Tahun 2016
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains

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Hydroxyapatite (HAp) Ca10(PO4)6(OH)2 is a calcium phosphate compound which is bioactive ceramic material with high bioafinitas. It is one of bones and teeth constituent. In this research, HAp was synthesized by hydrothermal process with pH reaction of 8, 10, 12 and temperature reaction of 130, 150 and 170oC. Samples were characterized by Transform Infrared Spectroscopy (FTIR). The results of FTIR analysis revealed that synthesis of HAp with hydrothermal process showed the formation of hydroxyapatite with the presence of peaks PO43- and OH-. The best condition in this research at pH 12 with reaction temperature 170oC.Keywords: Blood cockle shell, characterization, hydroxyapatite, hydrothermal.
Efisiensi Penurunan Kadar Kalsium Pada Air Laut Dengan Metoda Penukar Ion Yang Memanfaatkan Tanah Roselyn Indah Kurniati; Shinta Elystia; Zultiniar Zultiniar
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 1, No 2 (2014): Wisuda Oktober Tahun 2014
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains

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Source of water in Bengkalis is difficult. Sea water can be a source of water in there. Once of alternative can be process sea water be clean water use ion exchange with clay. This experiment use coloumn with diameter 2 inchi and high 1,2 meter. Media who used is clay. Ratention time and particle measure used variation of this experiment. Rate of retention time are 60, 120, 180 minute and particle measure are -3+5, -5+10, -10+15 mesh. Concentration Ca before process is 128 mg/l and after process is 58,4-8,8 mg/l of variation. Over all, clay can be cause of concentration Ca. Finally, retention time and particle measure give to effect to cause metal in seawater with efisiensi Ca are 54,38-93,12%, with a CEC of clay is 122,93 meq / 100g.Keywords : Seawater, Ion Exchange, Clay, Ratention Time, Particle Measure
Pengaruh Suhu Reaksi Dan Kecepatan Pengadukan Pada Sintesa Hidroksiapatit Dari Kulit Kerang Darah (Anadara Granosa) Dengan Metode Hidrotermal Suhu Rendah Dewi Indah Pratiwi; Ahmad Fadli; Zultiniar Zultiniar
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 2, No 2 (2015): Wisuda Oktober Tahun 2015
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains

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Hydroxyapatite (HA) is a ceramic material that widely used for bone implants as biocompatible and bioactive properties. Sea shells can be used as a source of calcium to produce hydroxyapatite. The purpose of this research was to determine the effect of rate stirrer and the reaction temperature on the synthesis of hydroxyapatite from sea shells with a low temperature hydrothermal method. The procedure was started with calcining sea shells into CaO at a temperature of 1000oC for 24 hours. Then 55.63 g of NH4H2PO4 was dissolved in 600 mL of water and 45.91 g of CaO was added into the solution at temperature variation of 70°C, 80oC, 90oC and stirring rate of 200 rpm, 250 rpm, 300 rpm until it forms a paste. The paste was dried in an oven at 120oC for 15 hours. Then the dried paste was crushed and calcined at a temperature of 900oC for 1 hour. The results showed that the size of hydroxyapatite crystals at 70°C is 63.43 nm, while the crystal with the size of 52.48 nm obtained when the temperature was increased to 90oC. The rate of stirrer of 200 rpm, the crystal with the size of 62.92 nm obtained, it decrease to 52.48 nm when the stirring rate increased 300 rpm. FTIR analysis showed that the hydroxyapatite is formed at the calcination temperature of 900°C. HA at a reaction temperature of 90oC with the stirring rate of 300 rpm to meet the standards as a bone filler (bone filler) synthetic.  Keywords: Crystallinity, Hydrothermal, Hydroxyapatite and Sea Shells
Model Kesetimbangan Pada Adsorbsi Ion Zn2+ Menggunakan Partikel Tricalcium Phosphate Sebagai Adsorben Dovy Reyandi; Ahmad Fadli; Zultiniar Zultiniar
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 3, No 2 (2016): Wisuda Oktober Tahun 2016
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains

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Zinc metal pollution (Zn2+) can result in negative impacts on people's life. One effort to reduce the content of zinc metal that is the adsorption process. The objective of this research is to study the effect of temperature and string rate as well as determination of equilibrium model in the zinc ion adsorption using tricalcium phosphate (TCP) as the adsorbent. Zinc (Zn+2) solution with 3 mg/l was added with 1 g of TCP in a glass beaker with stirring rate of 100 rpm, 200 rpm, and 300 rpm at temperature 30°C, 40°C and 50°C. Zinc concentration in the liquid was analyzed using AAS. The adsorption temperature decreased when the adsorption capacity of TCP (Qe) increased. The calculation result of absorption capacity (Qe) at stirring rate of adsorption 100 rpm at temperature of adsorption 30°C, 40°C and 50°C were Qe 1.0133 mg/g, 0.9598 mg/g and 0.8771 mg/g respectively. The adsorption capacity (Qe) of adsorbent TCP increased as stirring rate adsorption increased. The adsorption capacity (Qe) of zinc at temperature adsorption 30°C for stirring rate of 300 rpm, 200 rpm, and 100 rpm were 1.3702 mg/g, 1.3426 mg/g, and 1.3047 mg/g respectively. Adsorption mechanism of zinc (Zn2+) with TCP is suitable with Freundlich isotherm model.Keywords: adsorption, zinc (Zn2+), equilibrium model, tricalcium phosphate
Adsorpsi Zat Warna Rhodamin B Menggunakan Abu Terbang (Fly Ash) Batubara Teraktivasi Dengan Variasi Massa Adsorben Dan Suhu Adsorpsi Riris Verawati; Rozanna Sri Irianty; Zultiniar Zultiniar
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 6 (2019): Edisi 1 Januari s/d Juni 2019
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains

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Abstract

The increasing use of dyes in various industries causes environmental problems that must be addressed. Various methods have been done to reduce the dye waste, one of which is adsorption. Using of inexpensive and easily obtained adsorbents is one of the considerations in choosing the type of adsorbent used. The purpose of this research was to determine the ability of activated fly ash with NaOH by adsorbing Rhodamine B dyes at equilibrium with variations in adsorbent mass and adsorption temperature and determining the adsorption equilibrium model. This research was carried out by varying the mass of the adsorbent and the adsorption temperature. The result showed that the best mass of adsorbent for adsorbing rhodamine B at 140 minutes was 5 grams at an adsorption temperature 55 to obtain 89% of adsorption efectiveness. The adsorption mechanism meets the FreundLich isotherm model with a values of R2 equal to 0,935.   Keywords: adsorption, activation, dye waste, fly ash, rhodamin B
Ekstrak Kulit Pisang (Musa Paradisiaca) Sebagai Green Corrosion Inhibitor Pada Baja Karbon Rendah Dalam Larutan Hcl 0.5 M Dan 1 M Sry Utami Pardede; Komalasari Komalasari; Zultiniar Zultiniar
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 6 (2019): Edisi 1 Januari s/d Juni 2019
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains

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Corrosion has been identified as one of the major problems in the chemical industry, especially in the pipeline’s system. The inhibitor is the most effective way to protect the metal against corrosion. The natural corrosion inhibitor is chosen as an alternative because it’s safe, widely available, low cost, biodegradable and environmentally friendly. This study aims to know the corrosion rate and the inhibition efficiency of banana peel extract for low carbon steel. Banana peel extract was obtained by soxhlet extraction using ethanol-water as the solvent. Corrosion rate were determined by using the weight loss method. Low carbon steel was immersed in HCl 0.5 m and 1 M with and without banana peel extract 0 g/L, 0.5 g/L, 1 g/L, 1.5 g/L and 2 g/L by immersion time 24 h. The result showed that corrosion rate decreases on increasing of concentration of the extract and increases the inhibition efficiency. The maximum efficiency was obtaining at 2 g/L of corrosion inhibitor in HCl 0.5 M with inhibition efficiency 82.19%.Keywords: banana peel extract, corrosion, HCl, inhibitor, low carbon steel
Perengkahan Katalitik PalmFatty Acid Distillate (PFAD) Menghasilkan Biofuel Menggunakan Katalis Abu Tandan Kosong Sawit (TKS) Dengan Variasi Temperatur Dan Kecepatan Pengadukan Sri Hidayanti; Yelmida Yelmida; Zultiniar Zultiniar
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 1, No 1 (2014): Wisuda Februari Tahun 2014
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains

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Ash of empty palm fruit bunches is the solid waste from process of making crude palm oil (CPO). Ash of empty palm fruit bunches have many component that make it can to be use as a catalyst. Palm fatty acid distillate (PFAD) is a byproduct from process of making cooking oil. PFAD potential to converted into biofuel with catalytic cracking process.  This study aims to utilize ash of empty fruit bunches and PFAD to be raw material of making biofuel, to know component of biofuel produced. Yield maximum biofuel obtained at a temperature of 410 0 C with  stirring speed 250 rpm that is equal to 57,14%. While the largest biofuel conversion obtained at stirring speed of 300 rpm and a temperature of 4100C in the amount of 50.671%.   Cracking results analyzed by GCMS and found the biofue produced more dominant is a constituent of gasoline fuel .  Keywords: Ash of empty palm fruit bunches, Biofuel, Catalytic Cracking, PFAD
Co-Authors Affananda Taufik Affandi Affandi Ahmad Fadli Aldi Okta Priyatna Amun Amri Ardago Lengga Muda Siregar Ari Wibowo Harahap Bahruddin Bona Tua Deska Deska Dewi Indah Pratiwi Dhini Octavianty Dian Anggraini Purba Dini Aulia Sari Ermal Dovy Reyandi Ekky Wahyudi Fachry Abda El Rahman Fadly Sitohang Hafiz Hafiz Idral Idral Indah Fitriani Jefry Soclin Sianipar Juniwarnis Juniwarnis Khamaluddin Aditya Khodijah Khodijah Komalasari Komalasari Lucy Rahmawati M. Fauzan Akbar Mohd. Rafiq Muhammad Yusro Annur Nurrassyidin Nurrassyidin Nuruzzaman Shiqhi Paul Destin Purba Putri Fatihah Zuhrah Rathesa Najela Regina Giantika Resty Maiyola Riris Verawati Roselyn Indah Kurniati Rozanna Sri Irianty Shinta Elystia Siska Priscillia Aledya Siti Sakinah Sri Hidayanti Sry Utami Pardede Sudung Sugiarto Siallagan Syafrima Wahyu Syafruddin Syafruddin Utami Khairunnisa Widiya Widiya Widya Pangestu Yelmida Azis Yusnimar Sahan Zuchra Helwani