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Sumatera selatan
INDONESIA
IJFAC (Indonesian Journal of Fundamental and Applied Chemistry)
Published by Universitas Sriwijaya
ISSN : 25409395     EISSN : 25409409     DOI : -
Core Subject : Science, Social,
Biochemistry, Genetics & Molecular Biology Chemistry Environmental Science
Indonesian Journal of Fundamental and Applied Chemistry (IJFAC) is an international research journal and invites contributions of original research articles as well as review articles in several areas of chemistry. The journal aims to publish refereed, high-quality research papers with significant novelty and short communications in all branches of chemistry. Papers which describe novel theory and its application to practice are welcome, as are those which illustrate the transfer of techniques from other disciplines. IJFAC calls for papers that cover the following fields: Biochemistry Inorganic chemistry Physical chemistry Organic chemistry Analytical chemistry Applied Chemistry All papers are peer reviewed by at least two referees. Papers presented at conferences are peer reviewed and selected with the same standards as individually submitted papers. They therefore have the same archival value. Article should be submitted by the Online Submission Module at www.ijfac.unsri.ac.id or email to ijfac@unsri.ac.id
Arjuna Subject : -
Articles 5 Documents
 1 
Search results for , issue "Vol 6, No 1 (2021): February 2021" : 5 Documents clear
Cadmium in Water Samples determined by Atomic Absorption Spectrometry after Solid Phase Extraction using DOWEX 50WX2 resin Yuniar Yuniar; Siti Nuraini
IJFAC (Indonesian Journal of Fundamental and Applied Chemistry) Vol 6, No 1 (2021): February 2021
Publisher : IJFAC (Indonesian Journal of Fundamental and Applied Chemistry)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24845/ijfac.v6.i1.14

Abstract

Pre concentration of  Cd(II)  in water samples was carried out by using  column solid phase extraction  DOWEX 50WX2 prior to flame atomic absorption spectrometry analized. The optimum  extraction conditions such as pH (5),  sample flow rate (1 mL min−1), volume of eluent HNO3 1N (10 mL) and sample volume (50 mL) was determined. The limit of detections was found 0.2697  µg L−1. The accuracy was determined by analyzid spiked water samples used Cd CRM 0.1 mg L-1 traceable to SRM standard solution NIST. Percent recovery and relative standard deviation were found 93% and  6%, respectively. Conclusion this preparation method effective for determination of ion Cd (II) in water with flame-SSA..Keywords: SPE,Cd, Dowex 50WX2, Flame-SSA
Synthesis and Characterization of Amorphous TiO2 Anode Prepared by Anodizing Method for Na-ion Batteries Dwi Indrawati; Nirwan Syarif; Dedi Rohendi
IJFAC (Indonesian Journal of Fundamental and Applied Chemistry) Vol 6, No 1 (2021): February 2021
Publisher : IJFAC (Indonesian Journal of Fundamental and Applied Chemistry)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24845/ijfac.v6.i1.20

Abstract

Sodium ion battery (SIB) has engage sustainable alternative on replacing lithium ion batteries. The lower potential and larger ionic value has demanded on seeking a potential anode materials. Amorphous TiO2 prepared by electrochemical anodisation technique has provide a suitablility as anode SIB materials, which approved by conducting XRD, FTIR, and SEM-EDX measurements. Electrochemical performance was tested with variations in the concentration of NaOCl4 electrolyte in propylene carbonate (PC) solvent. Diffractogram of TiO2 showed the only peaks of Ti was observed at 2θ = 40.34. The TiO2 IR spectrogram shows that the absorption band at 507 cm-1 is the peak of the vibration characteristics of the Ti-O bond and the peak of 975 cm-1 corresponds to Ti-O-Ti bond. SEM-EDX image analysis showed the morphology of TiO2 was smooth without pore with a ratio of Ti: O elemental composition of 1: 2. Voltammogram showed the anodes in 0.5 M NaOCl4 electrolyte in PC solvent has a good stability potential windows with the high current density 1.2 mA and the capacity of 0.037 F/g
Utilization of Bottom Ash Coal and Agarwood in Waste Water Treatment in Palembang Jumputan Fabric Eis Sri Hartati; Muhammad Hatta Dahlan; Tuti Indah Sari
IJFAC (Indonesian Journal of Fundamental and Applied Chemistry) Vol 6, No 1 (2021): February 2021
Publisher : IJFAC (Indonesian Journal of Fundamental and Applied Chemistry)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24845/ijfac.v6.i1.01

Abstract

Liquid waste is easily recognized because of the presence of dyes. Waste containing dyes can cause visual pollution and increase the risk of environmental and health damage. The aim of this study was to determine the operating conditions of the best jumputan liquid waste treatment using bottom ash batubara and agarwood with variations in feed flow rate (1, 2, and 3 l/minutes), filtration time (30, 60, 90, and 120 minutes), and treatment. The results of jumputan liquid waste treatment are compared with the parameters of Biochemical Oxygen Demand (BOD), Chemical Oxygen Demand (COD), Total Suspended Solids (TSS), and pH of clean water quality standards for jumputan industry businesses and/or activities regulated in the Governor’s of Sumatera Selatan Regulation Number 16 of 2005 concerning Wastewater Quality Standards. The initials analysis of jumputan liquid waste before processing showed that jumputan liquid waste did not meet these quality standards, except pH and turbidity levels. In this study, jumputan liquid waste was pre-treated using coal bottom ash and activated carbon, then filtered. Biodegradation of jumputan liquid waste by konvensional method. The best of BOD, COD, TSS, pH, and the percentage of color rejection in the study were obtained in the treatment of jumputan  liquid waste using bottom ash batubara and activated carbon at a 120 minutes filtration time and a 1 l/minutes feed flow rate namely BOD 5.98 mg/l, COD 15 mg/l, TSS 22.3 mg/l, pH 7.32, color 5 Pt-Co, and 0 NTU turbidity. The filtration with bottom ash coal  and agarwood can removed the coloring from dyes.
Characterization of Electrode with Cu2O-ZnO/C and Pt-Ru/C Catalyst for Electrochemical Reduction CO2 to CH3OH Dea Radestia Rahmah; Dedi Rohendi; Nirwan Syarif; Addy Rachmat; Nyimas Febrika Sya'baniah; Dwi Hawa Yulianti
IJFAC (Indonesian Journal of Fundamental and Applied Chemistry) Vol 6, No 1 (2021): February 2021
Publisher : IJFAC (Indonesian Journal of Fundamental and Applied Chemistry)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24845/ijfac.v6.i1.08

Abstract

Electrode characterization has been carried out with Cu2O-ZnO/C and Pt-Ru/C catalysts to convert carbon dioxide to methanol. Characterization are carried out with XRD analysis, Cyclic Voltammetry (CV) and Electrochemical Impedance Spectroscopy (EIS). The electrodes are made by distributing Cu2O-ZnO/C and/or Pt-Ru/C catalyst by spraying method. The results of XRD analysis showed that the characteristic peak of platinum was 2θ = 39.7⁰ - 40.74⁰ with an intensity of 970 cps and 1384 cps and the diffraction peak of Ru oxide was found at 47.02⁰ with an intensity of 923 cps. The peak of Cu2O characteristics appeared at 36.12⁰ with an intensity of 88 cps and the peak for ZnO characteristics at 68.2⁰ with an intensity of 13 cps. The test results with the cyclic voltammetry method showed that the electrode with a Cu2O-ZnO/C catalyst obtained the highest ECSA value which was 26.044 cm2/g, with an electrical conductivity value of 3.4 x 10-3 S/cm and a total real resistance of 5.9425 Ω .
Corrosion Analysis On Internal Plastic Coating Drill Pipe 5 Inch 19.50 PPF Grade G-105 Ario Oktora; Eka Sri Yusmartini; Muhammad Faizal
IJFAC (Indonesian Journal of Fundamental and Applied Chemistry) Vol 6, No 1 (2021): February 2021
Publisher : IJFAC (Indonesian Journal of Fundamental and Applied Chemistry)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24845/ijfac.v6.i1.27

Abstract

In the oil, gas and geothermal drilling industry, the use of a drill pipe is vital for its use as an addition to the length of the drilling depth. Another function of the drill pipe is to channel high pressure drilling mud (drilling fluid / fluid) to the drill bit. During the drill pipe operation, several problems were encountered, such as broken, bent, and leaking or wash-out drill pipes. This is very detrimental to the company because the time to replace a new drill pipe will take a long time, and will disrupt the drilling program which will result in high drilling operational costs. This study analyzes the corrosion of the drill pipe which can cause damage to the drill pipe. The analysis on the drill pipe includes analysis of thickness, corrosion rate, remaining life, internal plastic coating damage, and SEM. The results show that the storage and use of drill pipes greatly affect the conductivity of the drill pipe.

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