Garuda - Garba Rujukan Digital

p-Index From 2021 - 2026

3.035

P-Index

This Author published in this journals

All Journal VALENSI Seminar Nasional Informatika (SEMNASIF) Jurnal Sains Teknologi dan Lingkungan (JSTL) IJTI (International Journal Of Transportation And Infrastructure) Sains Natural: Journal of Biology and Chemistry Journal of Science Innovare EKOLOGIA : Jurnal Ilmiah Ilmu Dasar dan Lingkungan Hidup JKPK (Jurnal Kimia dan Pendidikan Kimia) Journal of Applied Sciences and Advanced Technology Helium: Journal of Science and Applied Chemistry al Kimiya : Jurnal Ilmu Kimia dan Terapan Jurnal Pengabdian Masyarakat Inovatif Jurnal Pengabdian Masyarakat Inovatif

Yulian Syahputri

Universitas Pakuan

Author-ID : 995294

Agriculture, Biological Sciences & Forestry Humanities Automotive Engineering Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Computer Science & IT Electrical & Electronics Engineering Energy Engineering Environmental Science Materials Science & Nanotechnology Mathematics Medicine & Pharmacology Public Health Social Sciences Transportation Other

Published : 37 Documents Claim Missing Document

Claim Missing Document

Articles

1 2 3 4

PENGARUH VARIASI TEMPERATUR HIDROCRACKING TERHADAP INDEKS BIAS PRODUK HIDROCRACKING MINYAK JARAK PAGAR DENGAN KATALIS Mo-ZAA Yulian Syahputri; Ady Mara
EKOLOGIA Vol 16, No 2 (2016): JURNAL ILMIAH ILMU DASAR DAN LINGKUNGAN HIDUP
Publisher : Universitas Pakuan

This research aim to determine the influence of hydrocracking temperature variation to refraction index of hydrocracking castor oil product by using Mo-active natural zeolite catalyst. Hydrocracking process of castor oil was conducted with variation of temperature 250oC, 300oC, 350oC, 400oC, 450oC, 500oC and 550oC, whereas the flow rate of hydrogen gases 3.5 mL/min and the weight of catalyst 1.5 g. The refraction index of hydrocracking product of castor oil was analysed by using refractometer instrument. The result of this research showed that the best value of refraction index was 1.4681 which operated at 300oC temperature of hydrocracking.Key words : hydrocracking, catalyst, castor oil, refraction index

SINTESIS KEMOSENSOR ION CN- BERBASIS TURUNAN PIRAZOLIN DENGAN LOGAM Cu Yulian Syahputri; Diah Indah Purwati; Sutanto Sutanto; Agus Taufiq
EKOLOGIA Vol 21, No 2 (2021): EKOLOGIA : Jurnal Ilmiah Ilmu Dasar dan Lingkungan Hidup
Publisher : Universitas Pakuan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33751/ekologia.v21i2.4208

One of the toxic anions such as cyanide (CN-) has a negative impact on living things. Pyrazoline derivatives can be complexed with transition metals and used as CN- ion fluorosensor, because pyrazoline derivatives have fluorescence properties. This study aims to synthesize of CN- ion chemosensors based on pyrazoline derivative namely para-di-2-(1-phenyl-3-pyridyl-4,5-dihydro-1H-pyrazole-5-yl)benzene with Cu metal. The resulting complex compounds were characterized using Spectrophotometer Infra Red (FTIR), Spectrophotometer UV-Visible, and Spectrofluorometer. Then, a complex compound chemosensor (fluorosensor) study of Cu2+ was carried out with the addition of CN- ions using a spectrofluorometer. The results showed that the synthesis of complex compound Cu2+ was successfully carried out and a brown precipitate was obtained with a yield of 43% with a melting point of 243.3°C. Based on the results of characterization by FTIR (cm-1) generates 3400 (Amine), 2920.88-2852.42 (C-H pyridine), 2360.38 (C=N), 1594.50-1490.39 (C=C aromatic), 1233.67-1021.17 (C-N), 982.66 (Cu-O), 348.00 (Cu-N), and 320-280 (Cu-Cl). The results of the spectroscopy UV-Visible analysis Cu2+ complex compounds at a concentration of 5x10-5 M obtained two absorption peaks, 242 nm and 306 nm. The result of the spectrofluorometer analysis of Cu2+ complex compound were 1516 a.u at a wavelength of 502 nm. The results of the chemosensor (fluorosensor) studies of the Cu2+ complex compound with the addition of CN- ions can be used as a turn on-off type fluorosensor.

FLUOROSENSOR OF Hg2+ AND Cu2+ HEAVY METAL IONS FROM COMPLEX COMPOUND OF Co2+ AND para-di-2-(1-phenyl-3-pyridyl-4,5-dihydro-1H-pyrazole-5-yl)benzene LIGAND Yulian Syahputri; Linda Jati Kusumawardani
JKPK (Jurnal Kimia dan Pendidikan Kimia) Vol 6, No 1 (2021): JKPK (Jurnal Kimia dan Pendidikan Kimia)
Publisher : Program Studi Pendidikan Kimia FKIP Universitas Sebelas Maret

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20961/jkpk.v6i1.50537

Industrial activities like waste disposals and domestic activities may produce wastes in form of heavy metal like Hg2+ and Cu2+. The purpose of this research is to synthesize the complex compound of metal ion Co2+ and para-di-2-(1-phenyl-3-pyridyl-4,5-dihydro-1H-pyrazole-5-il)benzene ligand and its potentials as the fluorosensor of Hg2+ and Cu2+ heavy metal ions. Complex compounds are characterized with fourier-transform infrared (FTIR), ultraviolet-visible (UV-Vis) spectrophotometer, and spectrofluorometer. After that, complex compound fluorosensor study is conducted by adding Hg2+ and Cu2+ heavy metal ions using spectrofluorometer. The results show that the synthesis of complex compound generates brownish yellow sediment with the yield of 36% and melting point of 243.2oC. The result of characterization with FTIR (KBr, cm-1) generates 3060.65 (C-H aromatic), 2851-2919.46 (C-H pyridine), 2363.23 and 1640.14 (C=N), 1493.24-1594.5 (C=C), and 1326.38-1019.74 (C-N). The result of ultraviolet-visible spectrophotometer scanning obtains two absorption peaks on 250 nm and 366 nm in the concentration of 5x10-5 M with the respective molar absorptivity of log Ɛ 4.44 and log Ɛ 4.23. High molar absorptivity value shows that the complex compound has high fluorescence intensity. It is proven with the generation of emission fluorescence intensity of 1150 a.u. at the wavelength of 470 nm. The study of complex compound fluorescence in the addition of Hg2+ and Cu2+ heavy metal ions with spectrofluorometer shows that the complex compound in the addition of Hg2+ heavy metal ion can be made as fluorosensor with turn-on type while the complex compound in the addition of Cu2+ heavy metal ion can be made as fluorosensor with turn-off type.

VALUE CHAIN PALM OIL INDUSTRY ANALYSIS ON THE POLYOL POLYESTER PATHWAY Adriana Sari Aryani; Yulian Syahputri; Hermawan Hermawan
IJTI International Journal of Transportation and Infrastructure eISSN 2597-4769 pISSN 2597-4734 Vol 2 No 2 (2019): March 2019
Publisher : NAROTAMA UNIVERSITY, Indonesia

Palm oil is one of important Indonesia's export commodities. In 2017, the export value of palm oil and its derivatives (excluding oleochemicals and biodiesel) penetrated US $ 22.97 billion. The bright prospect of the palm oil commodity in the world vegetable oil trade encouraged the Indonesian government to develop an integrated palm oil industry. On the other hand, some downstream petrochemical products have begun to experience difficulties in raw materials, including Polyurethane. Polyurethane is a polymeric material from polyols and isocyanates which are widely used as packaging. Polyol itself is a polyether produced from the petroleum fraction. The polyol industry can be developed in the industrial tree branch of glycerol / glycerin in the large palm oil industry tree. Glycerin is generally the most end product of the palm oil fractionation industry, after cooking oil, margarine, shortening, and soap. In addition, glycerin is also a by-product of fatty acid esterification during biodiesel production. The value chain analysis carried out in the palm oil industry chain shows that polyol production has added new pathways that can extend the palm oil downstream industry chain. Analysis carried out on the main chain and the combined oil palm industry chain has been successfully used to map the polyol industry value chain on the palm oil track. The extension of the palm oil industry value chain on the polyol industry pathway can unite the industry with the chain of production of the petrochemical industry, in this case polyurethane, which at least can help substitute raw materials. A more detailed analysis of the perceptions of the role of the polyol industry in two directions, namely the palm oil industry chain with the polyurethane industry shows that there is a very large intersection of interests. Almost all perceptions of the role of key value chain activities in the polyurethane industry can be covered by the role of the value chain main activities in the palm oil polyol industry. Both value chains can be said to complement and complement each other. The production of polyester polyols can be absorbed by the needs of the polyurethane industry.

COFFEE GROUND ACTIVATED CHARCOAL AND ITS POTENTIAL AS AN ADSORBENT OF Ca2+ AND Mg2+ IONS IN REDUCING WATER HARDNESS Achmad Khaerul Mustaqim; Sutanto Sutanto; Yulian Syahputri
Helium: Journal of Science and Applied Chemistry Vol 1, No 2 (2021): Helium: Journal of Science and Applied Chemistry
Publisher : Universitas Pakuan

Residents of Ciaruteun Udik Village experienced complaints about the well water they use, namely the presence of scale on cooking utensils, soap is difficult to foam, and indigestion due to consuming hard water. One way to reduce water hardness is by adsorption. Coffee grounds can be used as activated charcoal and function as an adsorbent for calcium and magnesium metal ions. The purpose of this study was to determine the optimum contact time, pH, and weight of coffee grounds in the maximum adsorption of hardness in water. This study begins with the preparation of samples in hard water and coffee grounds, namely by activation with HCl, then the FTIR test of coffee grounds before and after activation. Activated coffee grounds charcoal was tested for adsorption capacity against hardness in water with variations in contact time, pH, and weight of the adsorbent. The results showed that coffee grounds activated charcoal can be used as an adsorbent in reducing water hardness. The optimum pH and contact time of coffee grounds activated charcoal in adsorption of hardness in water was at a contact time of 75 minutes and pH 7 with a hardness level in water of 565.17 mg CaCO3/L decreasing to 56 mg CaCO3/L. The optimum weight of coffee grounds activated charcoal in adsorption of hardness in water was 10 grams with hardness levels in water from 565.17 mg CaCO3/L decreasing to 12 mg CaCO3/L.

Hg (II) and Cd (II) Heavy Metal Ions Detection Based On Fluorescence Using Zn (II) Metal Ion Complex with Pyrazoline Derivatives Ligand Yulian Syahputri; Sutanto Sutanto; Riza Shabrina Zamzani
Helium: Journal of Science and Applied Chemistry Vol 2, No 1 (2022): Helium: Journal of Science and Applied Chemistry
Publisher : Universitas Pakuan

Pyrazoline derivatives can be used as ligands because they have photophysical properties and can chelate metal ions which cause very strong absorption, emission and have a fluorescence properties. Therefore, in recent years, pyrazoline ligands and their derivatives have been widely used for chemosensors. This research aims to detect fluorescence-based heavy metal ions Hg2+ and Cd2+ using a metal ion complex compound Zn2+ with pyrazoline derivative ligand. The research was started by synthesizing pyrazoline-derived ligands, then synthesizing complex compounds. Complex compounds were characterized using Fourier Transform Infra Red (FTIR), UV-Vis Spectrophotometer, and Spectrofluorometer. Then, a fluorescence study was carried out to determine the type of fluorosensor for complex compounds with the addition of heavy metal ions Cd2+ and Hg2+. The last stage is UV-Vis spectroscopy study on the addition of heavy metal ions Hg2+ and Cd2+. Pyrazoline derivative ligand obtained as para-di-2-(1-phenyl-3-pyridyl-4,5-dihydro-1H-pyrazole-5-yl)benzene is a yellow solid. The metal ion complex compound Zn2+ with pyrazolin derivative ligand is a brown colored compound, has a yield of 45 % and a melting point is 245 oC. The FTIR spectrum showed the presence of functional groups such as amine, C-H aromatic, C=N, C=C aromatic, C-N, Zn-N and Zn-Cl. Analysis with UV-Vis spectrophotometer showed that there was a shift in the maximum wavelength from the ligand to the Zn(II)-ligand complex, namely 240 nm to 246 nm and 363 nm with molar absorptivity values (log ) of 4.56 and 4.28, respectively. For fluorescence analysis, two absorbance peaks were obtained, namely at a wavelength of 370 nm with an intensity of 3644 a.u and 478 m at 8216 a.u. The results of fluorescence chemosensor studies on the addition of heavy metal ions Hg2+ and Cd2+ showed that the metal ion complex compound Zn2+ with pyrazoline-derived ligands can detect heavy metal ions Hg2+ and Cd2+ with a turn-on type.

Synthesis of Ligand para-di-2-(1-phenyl-3-pyridyl-4,5-dihydro-1H-pyrazol-5-yl) benzene by Aldol Condensation Method Yulian Syahputri; Sutanto Sutanto; Linda Jati Kusumawardani
Helium: Journal of Science and Applied Chemistry Vol 1, No 1 (2021): Helium: Journal of Science and Applied Chemistry
Publisher : Universitas Pakuan

Synthesis of pyrazoline derivative ligand para-di-2-(1-phenyl-3-pyridyl-4,5-dihydro-1H-pyrazol-5-yl)benzene has been successfully carried out by aldol condensation method using 2-acetyl pyridine and terephthalaldehyde in ethanol solution. The synthesis results are then reacted with excess phenyl hydrazine. The yield of ligand obtainedwas 63.10% of ayellow solid. The ligand was characterized using 1H-NMR spectroscopy, ultraviolet-visible (UV-Vis) spectroscopy, fourier transform infra-red (FTIR) spectroscopy and spectrofluorometer. The characterization with UV-Vis spectrophotometer results shows ligand has a large value of molar absorptivity (Îµ) at wavelength 236 nm and concentration 5x10-5 M.The results indicates that the ligand has a strong fluorescence intensity. It proved by peak emission at 467.5 nm (I = 4055 a.u).

Metal Ion Complex Compound Fe(III) with Pyrazoline Derivative Ligand as Cd(II) and Zn(II) Heavy Metal Ion Sensor Based on Fluorescence Yulian Syahputri; Ani Iryani; Linda Jati Kusumawardani; Shinta Safitri
JKPK (Jurnal Kimia dan Pendidikan Kimia) Vol 7, No 2 (2022): JKPK (Jurnal Kimia dan Pendidikan Kimia)
Publisher : Program Studi Pendidikan Kimia FKIP Universitas Sebelas Maret

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20961/jkpk.v7i2.55419

The purpose of this research is to synthesize the complex compound of ion Fe3+ with para-di-2-(1-phenyl-3-pyridyl-4,5-dihydro-1H-pyrazole-5-yl)benzene ligand and its potentials as the sensor of Cd2+ and Zn2+ heavy metal ions based on fluorescence. Complex compounds are characterized with a Fourier-Transform Infrared (FTIR) Spectrophotometer, Ultraviolet-Visible (UV-Vis) Spectrophotometer and Spectrofluorometer. Then, a complex compound fluorosensor study is conducted by adding Cd2+ and Zn2+ heavy metal ions using a UV-Vis Spectrophotometer and Spectrofluorometer. The results show that the synthesis of the complex compound formed by reacting Fe metal and pyrazoline derived ligands generates brown precipitate with a yield of 51.25% and a range of melting points of 252.2-253.2 . The result of characterization with FTIR (cm-1) generates 3380.20 (tertiary amine), 2922.31-2852.42 (C-H pyridine), 2360.38 (C=C aromatic), 1595.93-1451.88 (C=N), 1232.25-982.66 (C-N pyrazoline), 751.61-690.29 (C-H aromatic) and 366.54-339.44 (Fe-N). The Uv-Vis spectrophotometer study with a concentration of 5x10-5 M showed two absorption peaks at 246 nm, 354 nm, and 440 nm. The resulting fluorescence intensity of 813.1 a.u. at the wavelenght of 500 nm. The study of complex compound fluorescence shows that the addition of Cd2+ heavy metal ion can be made as fluorosensor with turn-on (enhancement) type, while the complex compound in the addition of Zn2+ heavy metal ion can be made as fluorosensor with turn off-on (quenching-enhancement) type.

DEVELOPMENT OF COD (CHEMICAL OXYGEN DEMAND) ANALYSIS METHOD IN WASTE WATER USING SPECTRODIRECT Ade Heri Mulyati; Leny Heliawati; Sutanto .; Uswatun Hasanah; Diana Widiastuti; Siti Warnasih; Yulian Syahputri
Journal of Science Innovare Vol 3, No 2 (2020): Journal of Science Innovare, Volume 03 Number 02 2020
Publisher : Universitas Pakuan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33751/jsi.v3i2.3006

Increased human activities will cause various problems, one of which is water pollution in water sources because it receives a pollution load that exceeds its carrying capacity. In the context of environmental conservation, the government has set quality standards for liquid waste produced by various industries and other activities in a Decree of the State Minister for the Environment. COD (Chemical Oxygen Demand) is one of the most important parameters in wastewater quality standards. This study aims to validate the COD analysis method which refers to COD Thermoreactor System (LOVIBOND brand) at Pakuan University Service Laboratory, to ensure the validity of COD analysis results at Pakuan University Service Laboratory. Spectrodirect COD analysis method provides results that meet the requirements of accuracy, precision, LOD, and LOQ which is quite good. The results of the Coefficient of Variation give good results with a value of 1.8841% indicating the accuracy of the analysis method is good. The accuracy parameter also gives good results and meets the requirements with a% recovery value of 98.70351%. Overall, it can be stated that the spectrodirect analysis method tested is an accurate, precise, simple, and economical method for determining COD levels

Utilization Of White-Meat, Red-Meat And Super Red Dragon Fruit (Hylocereus sp) Skin Waste As An Alternative Food Source Yulian Syahputri; Diana Widiastuti
Journal of Science Innovare Vol 1, No 1 (2018): Journal of Science Innovare, Volume 01 Number 01 2018
Publisher : Universitas Pakuan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33751/jsi.v1i01.679

Dragon fruit skin, waste material (dragon fruit waste), will have a profitable sale value if it can be used as a food raw material. Dragon fruit skin waste contains relatively high dietary fiber so it can be used as a food raw material. This study aims to utilize dragon fruit skin waste for the manufacture of dragon fruit skin flour as an alternative food source. Some tests are made on white-meat dragon fruit skin, red-meat dragon fruit skin and super red dragon fruit skin. The preliminary study is the soaking of the three types of dragon fruit skin in two solutions, namely 0.1% sodium citrate and 0.1% sodium metabisulfite to prevent the browning effect on flour. Dragon fruit skin flour from the soaking with both solutions is then characterized physically, including its texture, color, flavor and rendement. The best physical characterization is followed by chemical characterization, including the contents of water, ash, protein, fat, carbohydrate, dietary fiber, minerals (Fe, Na, K, Ca and P), and also microbiological characterization of Escherichia coli, molds and Bacillus cereus. The chemical and microbiological characterization shows that the red-meat dragon fruit skin flour has better results than the white-meat and super red dragon fruit skin flour does. The red-meat dragon fruit skin flour contains 8.80% water, 0.20% ash, 2.35% fat, 7.69%, protein, 68,29% carbohydrate and 28,72% dietary fiber as well as 4.40 mg K, 8.76 mg Na , 0.65 mg Fe , 10.20 mg Ca and 32.58 mg P. Keywords: Waste, Dragon Fruit Skin, Dragon Fruit Skin Powder, Alternative Food Source

Co-Authors . Apriansyah Achmad Khaerul Mustaqim Ade Heri Mulyati Ade Heri Mulyati, Ade Heri Adi Mara Adriana Sari Aryani Ady Mara, Ady Agel Figo Alfarosi Agus Taufiq Ani Iryani Ariq, Muhammad Rizki Diah Indah Purwati Diana Widiastuti Farhan Fatur Rachman Hermawan Hermawan Imawati, Naufa Dea Indah, Amalia Nurul Iryani, Ani Jati Kusumawardani, Linda Kotim Subandi Leny Heliawati Linda Jati Kusumawardani M. Daud Mahmudin Maharani, Khairy Yunda Mara, Adi Mohammad Rommy Izha Ramadhan Muhammad Fathurrahman Muhammad Rizki Saputra, Muhammad Rizki Pekerti, Unggul Tri Prakoso, Muhamad Iqbal Purnama, Dicky Budhi Ramadhini, Dania Riza Shabrina Zamzani Sawarni Hasibuan Shinta Safitri Siti Warnasih Sutanto Sutanto . Sutanto Sutanto Sutanto Sutanto Sutanto Sutanto Sutanto Sutanto Tri Panji Uswatun Hasanah Uswatun Hasanah Widyatama, Awang

Title

Found 37 Documents
Search

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Title Search

Found 37 Documents Search

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Title

Found 37 Documents
Search