scholarly journals FORMULASI, KARAKTERISASI DAN UJI STABILITAS MIKROEMULSI MINYAK NILAM (Pogostemon cablin Benth.)

2021 ◽  
Vol 6 (2) ◽  
pp. 282-291
Author(s):  
Benni Iskandar ◽  
◽  
Anita Lukman ◽  
Raesa Tartilla ◽  
Meircurius Dwi Condro Surboyo ◽  
...  
Keyword(s):  
Particle Size Analysis ◽  
Size Analysis ◽  
Microemulsion System ◽  
Test Results ◽  
Dispersion Process ◽  
Patchouli Alcohol ◽  
Freeze And Thaw ◽  
Pogostemon Cablin ◽  
Main Component

Patchouli oil contains patchouli alcohol as the main component which is a tricyclic tertiary alcohol sesquiterpene compound that is insoluble in water. Microemulsion is a droplet dispersion technology that combines an insoluble liquid with another liquid. The role of surfactants in helping the dispersion process of microemulsion formulation is by reducing the interfacial tension. Microemulsion is a supersolvents carrier, so that both hydrophilic and lipophilic can be administered through a microemulsion system. The purpose of this study was to formulate patchouli oil into a stable microemulsion preparation. This research was conducted by making 4 preparations of patchouli oil microemulsion containing 5% (F1), 10% (F2), and 15% (F3) patchouli oil, and microemulsion without patchouli oil (F0). Evaluation of microemulsion preparations includes organoleptic test, pH measurement, density determination, viscosity test, freeze and thaw test, centrifugation test, and particle size analysis. The test results showed that the microemulsion containing 5% patchouli oil had the most stable characteristics compared to other formulas.

scholarly journals Isolasi dan Penentuan Kadar Minyak Nilam (Pogostemon cablin Benth) Asal Peunaron Kabupaten Aceh Timur Menggunakan GC-MS

2021 ◽  
Vol 4 (1) ◽  
pp. 14-22
Author(s):  
Ela Daniati ◽  
Mastura Mastura ◽  
Hasby Hasby
Keyword(s):  
Oil Content ◽  
Descriptive Analysis ◽  
Oil Quality ◽  
Research Data ◽  
Alcohol Content ◽  
Patchouli Alcohol ◽  
A Value ◽  
Pogostemon Cablin ◽  
Main Component

This study aims to determine the result of isolation of patchouli oil from Peunaron East Aceh and determine the quality of patchouli oil and to determine the levels contained in patchouli oil. Analysis of the results of the research data is described using quantitative and descriptive analysis. Based on research that has been done that the results of isolation of patchouli oil from Peunaron , East Aceh Regency, yields a value of 2,04%. Patchouli oil quality obtained shows yellow results with a specific gravity value of 0,950 that meets SNI standards. The determine of the refractive index produces a value of 1,50039 with results that do not meet SNI standards and the resulting patchouli oil content is 33 chemical compound components with the main component of patchouli alcohol content of 3,65%. It can be concluded that patchouli oil from Peunaron, East Aceh Regency still does not meet SNI standards. 

scholarly journals Effect of Micro- and Nanomagnetite on Printing Toner Properties

2014 ◽  
Vol 2014 ◽  
pp. 1-7 ◽  
Author(s):  
Maryam Ataeefard ◽  
Ebrahim Ghasemi ◽  
Mona Ebadi
Keyword(s):  
Particle Size ◽  
Particle Size Analysis ◽  
Control Agent ◽  
Size Analysis ◽  
Gradient Force ◽  
Scanning Calorimetry ◽  
Laser Scattering ◽  
X Ray ◽  
Main Component ◽  
Electrophotographic Printing

Toner is a main component of electrophotographic printing and copying processes. One of the most important ingredients of toner is magnetite (Fe3O4) which provides the tribocharging property for toner particles. In this study, nano- and microparticles of Fe3O4were synthesized using the coprecipitation method and different amounts of lauric acid as a surfactant. The synthesized nano and micro Fe3O4was then used as the charge control agent to produce toner by emulsion aggregation. The Fe3O4and toner were characterized by X-ray powder diffraction (XRD), atomic gradient force magnetometry (AGFM), dynamic laser scattering (DLS), particle size analysis, differential scanning calorimetry (DSC), and scanning electron microscopy (SEM). The results show that the optimum amount of surfactant not only reduced particle size but also reduced the magnetite properties of Fe3O4. It was found that the magnetite behavior of the toner is not similar to the Fe3O4used to produce it. Although small-sized Fe3O4created toner with a smaller size, toners made with micro Fe3O4showed better magnetite properties than toner made with nano Fe3O4.

Study on the Mineral Processing of Cassiterite from Flotation Tailings by a Combined Method

2014 ◽  
Vol 968 ◽  
pp. 185-189 ◽  
Author(s):  
Yi Qiang Liang ◽  
Sheng Jian ◽  
Cong Jie Zhu ◽  
Ji Bo Qiao
Keyword(s):  
Particle Size ◽  
Size Range ◽  
Particle Size Analysis ◽  
Size Analysis ◽  
Test Results ◽  
Combined Method ◽  
Gravity Concentration ◽  
Complex Composition ◽  
Flotation Process ◽  
Flotation Behavior

A tailings assaying 0.4% Sn is taken from a flotation process which is used to recover Cu, Pb and Zn. The cassiterite in the tailings is of fine dissemination and complex composition, which leads to difficulties to recover by traditional gravity concentration. In order to enhance the recovery of Sn and make good use of the tailings, particle size analysis and chemical analysis were conducted. Test results show that different flotation index under different size range can be obtained, and the flotation behavior of different size range was investigated. As a result, a reasonable process of gravity concentration and flotation after classification is proposed, which can enhance the Sn recovery remarkably.

The Role of Particle Characterization in Advanced Wastewater Treatment

1993 ◽  
Vol 27 (10) ◽  
pp. 131-139 ◽  
Author(s):  
Avner Adin ◽  
Giora Alon
Keyword(s):  
Particle Size ◽  
Particle Size Analysis ◽  
Size Analysis ◽  
Particle Characterization ◽  
Particle Size Distributions ◽  
Direct Filtration ◽  
Wastewater Filtration ◽  
Improved Design ◽  
Filtration Model

This article discusses the application of particle size analysis to better understanding and improved design of the direct filtration process (no chemical pretreatment) of secondary municipal effluents. Particle size distributions (PSD) of various plant effluents are described and interpreted. Results from laboratory experiments are presented, pointing out a major divergence of effluent filtration from classical water filtration theory. A mathematical model introducing the PSD function into a “classical” filtration model is presented exemplifying PSD application to improved wastewater filtration.

Industrial Experiment Research on a Vibration Lamella Thickener’s Application to Concentration of Tailings

2014 ◽  
Vol 522-524 ◽  
pp. 1476-1479
Author(s):  
Chang Cheng Shang Guan ◽  
Xing Long Zhou ◽  
Dong Yang Sun ◽  
Peng Xiang Zhang
Keyword(s):  
Particle Size ◽  
Unit Area ◽  
Particle Size Analysis ◽  
Test Equipment ◽  
Size Analysis ◽  
Test Results ◽  
Experiment Research ◽  
Test Parameter ◽  
Industrial Experiment

In order to test the performance of a vibration lamella thickener, a ZXN32 was applied to a industry experiment.We carried out a series of experiment and measured the test parameter of the equipment which was based on particle size analysis and settlement experiment.The test results show that the calculation of the capacity meets with the practical capacity.The test equipment runs stably and compares with the thickener used in the plant,the test equipment is 2.7~2.8 times as much as thickener in capacity per unit area at the same conditions.

scholarly journals Development of nickel and silver ceramic filters supported on K10 montmorillonite clay for water disinfection

Cerâmica ◽  
2020 ◽  
Vol 66 (380) ◽  
pp. 474-482
Author(s):  
L. T. de Moraes ◽  
E. M. Paiva ◽  
S. F. Rodrigues ◽  
J. H. G. Rangel ◽  
M. M. Oliveira
Keyword(s):  
Pechini Method ◽  
Particle Size Analysis ◽  
Water Disinfection ◽  
Size Analysis ◽  
Test Results ◽  
X Ray Diffraction ◽  
Ceramic Filters ◽  
Heat Treated ◽  
Escherichia Coli Bacteria ◽  
Total Elimination

Abstract This study aimed to obtain ceramic filters with bactericidal action for water disinfection. For this, aqueous suspensions of montmorillonite K10 clay were prepared at concentrations of 48%, 50%, and 52%. Later, these were impregnated into polymeric sponges in order to form the ceramic skeletons by using the replica technique. The ceramic filters were submerged in nickel resins doped with 0.25 and 0.50 mol% silver. These resins were obtained by the Pechini method and heat-treated at 600 and 700 ºC for 2 h. Moreover, techniques such as X-ray diffraction, particle size analysis, scanning electron microscopy, energy dispersive spectroscopy, compressive strength, water absorption, and apparent porosity were used to characterize the filters, and their performance was analyzed by a bactericidal test. The bactericidal test results showed that the filters impregnated with the resin containing 0.50 mol% of silver promoted the total elimination of the Staphylococcus aureus and Escherichia coli bacteria.

scholarly journals Role of Microscopy as the Reference Method for Particle Size Analysis in Drug Development

2011 ◽  
Vol 17 (S2) ◽  
pp. 1146-1147 ◽  
Author(s):  
L DiMemmo ◽  
M Hubert ◽  
B Sarsfield ◽  
B Shekunov
Keyword(s):  
Particle Size ◽  
Drug Development ◽  
Reference Method ◽  
Particle Size Analysis ◽  
Size Analysis

Extended abstract of a paper presented at Microscopy and Microanalysis 2011 in Nashville, Tennessee, USA, August 7–August 11, 2011.

Preparation of Nano-TiO2 in Inverse Microemulsion System with TiOSO4 as Raw Material

2012 ◽  
Vol 174-177 ◽  
pp. 747-750
Author(s):  
Xing Xin Jia ◽  
Wen Yuan Gao ◽  
Mei Hong Niu
Keyword(s):  
Particle Size Analysis ◽  
Raw Material ◽  
Synthesis Process ◽  
Size Analysis ◽  
Microemulsion System ◽  
Mass Ratio ◽  
X Ray Diffraction ◽  
X Ray ◽  
Inverse Microemulsion ◽  
Average Size

The nanosized TiO2was prepared by microemulsion process in the system of cyclohexane/[Span80 combine with Tween40]/water with TiOSO4as raw material. The synthesis process of the powder was investigated by differential thermal analysis (DTA), X-ray diffraction (XRD) and laser particle size analysis (LPSA). The results showes that TiO2with the average size of 19.5nm and narrow size distribution was prepared under these conditions of Span80 of 8g and Tween40 of 2g as the emulsifier, water/oil mass ratio of 1/4, amount of TiOSO4of 10mL with the consistency of 0.8mol/L, calcination temperature of 480 °C for 20min.

Sign in / Sign up

Export Citation Format

Share Document