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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
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

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STUDIES ON PREPARATION OF Fe(III)/TiO2 BY SOL-GEL METHOD Linda J Kusumawardani; Yulian Syahputri
Journal of Science Innovare Vol 2, No 1 (2019): Journal of Science Innovare, Volume 02 Number 01 2019
Publisher : Universitas Pakuan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33751/jsi.v2i01.1523

Abstract

In this study, Fe/TiO2 powder was synthesized by sol-gel method using mixture of Titanium Tetraisopropoxide (TTIP) as precursor and FeCl3 as iron source of 10% (w/w). The Fe/TiO2 powder was calcined at 500 °C for 1 hour. The sample of Fe/TiO2 was characterized using FTIR anad DRS measurements. FTIR analysis showed that Fe was successfully doped on TiO2 and then DRS analysis proved that the visible light was absorbed by Fe/TiO2 with its band gap energy up to 2.3 eV
DEVELOPMENT OF COD (CHEMICAL OXYGEN DEMAND) ANALYSIS METHOD IN WASTE WATER USING UV-VIS SPECTROPHOTOMETER Uswatun Hasanah; Ade Heri Mulyati; Sutanto .; Diana Widiastuti; Siti Warnasih; Yulian Syahputri; Tri Panji
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.v3i2.3007

Abstract

The COD (Chemical Oxygen Demand) analysis method based on the Indonesian National Standard (SNI) is a revision of SNI 06-6989.2-2004, Water and wastewater - Part 2: Method of testing for chemical oxygen demand (COD) with closed reflux spectrophotometrically. This SNI uses references from international standard methods, namely Standard Methods for the Examination of Water and Wastewater, 21st Edition, editor of LS Clesceri, AE Greenberg, AD Eaton, APHA, AWWA and WEF, Washington DC, 2005, Methods 5220 D (Closed Reflux, Colorimetric Methods). The purpose of this study was to validate the total method for testing chemical oxygen demand (COD) in water and wastewater with the reduction of Cr2O7 2- spectrophotometrically in the range of COD values of 100 mg / L to 900 mg / L measurements were made at a wavelength of 600 nm. and COD values less than or equal to 90 mg / L measurements were made at a wavelength of 420 nm. The results showed that the method SNI 06-6898.2- 2009  has good validation results including the r results obtained from the calibration curve equation of 0.998, a precision of 1.82%, an accuracy of 98.25% and LOD and LOQ of 12.27 mg / L and 25, 61 mg / L.
Potential of Cassava Peel as Cr Metal Biosorbent in Laboratory COD Waste Farhan Fatur Rachman; Yulian Syahputri; Sutanto Sutanto
Helium: Journal of Science and Applied Chemistry Vol 3, No 1 (2023): Helium: Journal of Science and Applied Chemistry
Publisher : Universitas Pakuan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33751/helium.v3i1.7932

Abstract

Cassava peel is an agricultural residual waste that can be found from industrial processing in Indonesia. Cassava peel contains cellulose which can be used as a biosorbent. The aim of this study was to optimize the adsorption of cassava peel waste on chromium metal ions and then to determine the adsorption capacity and adsorption constant values of the Langmuir model and the Freundlich model. The research was divided into four stages, namely manufacture, optimization conditions, maximum capacity, and application to waste. Optimization conditions for weight ratio, optimum concentration, pH, and contact time. Determination of chromium content, standard series, and testing using the APHA method SSA ed. 23rd 3030 D 3111 B, 2017 at a wavelength of 357.78 nm. Determination of adsorption isotherms of Langmuir and Freundlich models. The optimum condition results at a weight ratio of 1 gram in 10 ml of solution, a concentration of 10 ppm, pH 2, and a contact time of 180 minutes. The adsorption capacity is 0.10216 mg Cr/gram cassava peel biosorbent. Application to chrome contamination laboratory waste obtained an adsorbed concentration of 20.681 ppm. In the Langmuir and Freundlich isothermal model, the R2 value is 0.9668 and 0.9985, the n value is 0.73964.
STUDI PEMANFAATAN Mo-ZAA SEBAGAI KATALIS DAN PENGARUH VARIASI TEMPERATUR HIDROCRACKING TERHADAP PRODUK HIDROCRACKING MINYAK JARAK PAGAR Yulian Syahputri; Adi Mara
Ekologia: Jurnal Ilmiah Ilmu Dasar dan Lingkungan Hidup Vol 15, No 2 (2015): Ekologia : Jurnal Ilmiah Ilmu Dasar dan Lingkungan Hidup
Publisher : Universitas Pakuan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33751/ekol.v15i2.196

Abstract

Study of utilization of Natural Zeolites Active-Mo (Mo-ZAA) as a catalyst and influence of temperature variation on hydrocracking product temperature hydrocracking has done. Castor oil hydrocracking process done with a variation of the temperature of 250oC, 300oC, 350oC, 400oC, 450oC, 500oC and 550oC, flow rate of hydrogen gas 3.5 mL/minute and weighs 1.5 g catalysts. Hydrocracking castor oil products have been analyzed including the burning heat, density and viscosity by using the bom kalorimeter, picnometer and Ostwald viscometer instrument. The results of this study showed that the best value of the burning heat, density and viscosity in a row is on the 53.0003 kJ/g; 0.9698 g/mL and peace of 3.1691, each of which is operated at a temperature of 350oChydrocracking. Using the Mo-ZAA as a catalyst also plays a role in the process of hydrocracking. This can be seen from the value of the heat of combustion, the density and viscosity of castor oil hydrocracking product is better than the heat of combustion, density and viscosity prior hydrocracking. Key Words : Hydrocracking, Catalyst, Active Natural Zeolite, Castor Oil
SINTESIS KEMOSENSOR ION CN- BERBASIS TURUNAN PIRAZOLIN DENGAN LOGAM Cu Yulian Syahputri; Diah Indah Purwati; Sutanto Sutanto; Agus Taufiq
Ekologia: Jurnal Ilmiah Ilmu Dasar dan Lingkungan Hidup 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

Abstract

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.
PENGARUH VARIASI TEMPERATUR HIDROCRACKING TERHADAP INDEKS BIAS PRODUK HIDROCRACKING MINYAK JARAK PAGAR DENGAN KATALIS Mo-ZAA Yulian Syahputri; Ady Mara
Ekologia: Jurnal Ilmiah Ilmu Dasar dan Lingkungan Hidup Vol 16, No 2 (2016): Ekologia : Jurnal Ilmiah Ilmu Dasar dan Lingkungan Hidup
Publisher : Universitas Pakuan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33751/ekol.v16i2.746

Abstract

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
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

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33751/helium.v1i2.4537

Abstract

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.
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

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33751/helium.v1i1.2953

Abstract

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 (ε) 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).
Photodegradation Of Methyl Orange (MO) Using TiO2/Zeolite From Coal Fly Ash Waste Under Acidic Conditions and H2O2 Addition Prakoso, Muhamad Iqbal; Maharani, Khairy Yunda; Ariq, Muhammad Rizki; Indah, Amalia Nurul; Apriansyah, Apriansyah; Iryani, Ani; Kusumawardani, Linda Jati; Syahputri, Yulian
Helium: Journal of Science and Applied Chemistry Vol 4, No 1 (2024): Helium: Journal of Science and Applied Chemistry
Publisher : Universitas Pakuan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33751/helium.v4i1.9503

Abstract

This study aims to degrade methyl orange dye by a photocatalytic method using TiO2/zeolite nanocomposite. The zeolite used is sourced from coal waste fly ash. While the TiO2/Zeolite nanocomposites were synthesized by the sol-gel method and analyzed using UV-Vis DRS to determine the band gap energy. The band gap energy obtained from calculation results of the Kubelka-Munk formula shows a value of 2.0 eV. This indicates that the working area of methyl orange photodegradation using TiO2/zeolite is in visible light. Optimization of the methyl orange photodegradation process in this study will be carried out in an acidic environment by varying the nanocomposite dose (0.05; 0.1; 0.2; 0.3; and 0.4 g) and the length of time of irradiation (15; 30; 45; 60; and 75 minutes). This study also conducted a study on the effect of adding H2O2. The optimum yield of percent degradation (%D) of methyl orange (MO) obtained was 98.37% from initial concentration 10 mg/L to 0,16 mg/L with varying doses of TiO2/zeolite 0.1 g and 30 minutes in an acidic environment and the addition of H2O2.
Air Quality Analysis of Nitrogen Dioxide and Ozone (NO2 and O3) In The Chemistry Laboratory of Universitas Pakuan Bogor Pekerti, Unggul Tri; Widyatama, Awang; Imawati, Naufa Dea; Syahputri, Yulian
Helium: Journal of Science and Applied Chemistry Vol 3, No 2 (2023): Helium: Journal of Science and Applied Chemistry
Publisher : Universitas Pakuan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33751/helium.v3i2.9470

Abstract

Universitas Pakuan is one of the universities in Bogor which has a chemistry education laboratory for practical purposes. In this study, the room tested is the instrument room and preparation room. Air testing of this work environment refers to the Minister of Manpower Regulation No. 05 of  2018. The test results for the instrument room and preparation room found that the levels of nitrogen dioxide (NO2) and ozone (O3) in the two rooms do not show any indication of  NO2 and O3 pollution with result values below the detection limit testing (0.0066 ppm and 0.0491 ppm).
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