scholarly journals Biodiesel Hasil Transesterifikasi Minyak Biji Nyamplung (Calophyllum inophyllum) Dengan Metanol

2017 ◽  
Vol 4 (2) ◽  
pp. 394-401 ◽  
Author(s):  
Rustam Musta ◽  
Aceng Haetami ◽  
Mimi Salmawati
Keyword(s):  
Moisture Content ◽  
Sample Preparation ◽  
Phosphoric Acid ◽  
Water Content ◽  
Seed Oil ◽  
Quality Parameter ◽  
Calophyllum Inophyllum ◽  
Good Concentration ◽  
Biodiesel Quality ◽  
Parameter Test

Study of the transesterification of Calophyllum innophyllum seed oil from Kendari with methanol has been conducted. The purpose of the research to determine of the yield of ester produced in transesterification process with methanol, the viscosity of biodiesel produced, moisture content of biodiesel produced, density of biodiesel produced. The methods used in this study are sample preparation, transesterification process, biodiesel quality parameter test consisting of viscosity, moisture content and density. The results showed that good concentration of phosphoric acid was used to remove the gum is 85%, the yield of ester produced in the process of transesterification with methanol is 111,647%, parameter of biodiesel quality measured that viscosity = 0,315 mm2/ s not fulfill Indonesian National Standart (INS), water content is 0.02 meets the INS and the density = 0.8725 g / cm3 meets the INS standard

scholarly journals Minyak Biji Nyamplung (Calophyllum inophyllum) Dengan Etanol

2017 ◽  
Vol 4 (2) ◽  
pp. 406-412
Author(s):  
Rezki Rezki ◽  
Rustam Musta ◽  
Aceng Haetami
Keyword(s):  
Moisture Content ◽  
Phosphoric Acid ◽  
Acid Concentration ◽  
Final Stage ◽  
Seed Oil ◽  
Research Result ◽  
Quality Parameter ◽  
Ester Yield ◽  
Biodiesel Quality ◽  
Phosphoric Acid Concentration

A study has been conducted on the transesterification of Calophyllum innophyllum seed oil with ethanol. The purpose of this research is to determine the comparison of concentration of phosphoric acid used to remove the gum on the oil, ester content is produced in the process of transesterification with ethanol, the ester yield obtained after the final stage of the transesterification process, the viscosity of the biodiesel produced, moisture content of biodiesel is produced, and density of biodiesel was produced. This research is taken based on consideration production biodiesel by direct transesterification process. Based on research result of good phosphoric acid concentration used to remove oil gum is 85%, volume of biodiesel produced at transesterification equal to 150 mL with yield 80,89%, biodiesel quality parameter measured that viscosity = 0,05 mm2 / s not fulfill Indonesian National Standart (INS), moisture content = 0.045 meets the INS and the density = 0.881 g / cm3 meets the INS

scholarly journals Pemanfaatan Ampas Tahu Sebagai Bahan Baku Pembuatan Biodiesel

2017 ◽  
Vol 5 (3) ◽  
pp. 140
Author(s):  
Trisnawati Trisnawati ◽  
Daud K. Walanda ◽  
Irwan Said
Keyword(s):  
Methyl Ester ◽  
Moisture Content ◽  
Water Content ◽  
Vegetable Oil ◽  
Methyl Esters ◽  
Raw Material ◽  
National Standard ◽  
Biodiesel Quality ◽  
Pre Treatment

Biodiesel is an alternative raw material for fuel of diesel motor made from vegetable oil. This study attempted to utilize tofu dregs as raw material for biodiesel. This study aimed to determine the yield of biodiesel produced and the content of methyl esters in the biodiesel yield, and to analyze the quality of biodiesel produced based on Indonesian national standard (SNI). This study consisted of four stages: the provision of samples, pre-treatment, esterification and transesterification, and analysis of the quality of biodiesel produced which include the density at 15 °C, the viscosity at 40 °C, and the moisture content. The results showed that the yield of biodiesel was 4.01%, and the content of methyl ester shown by larger Rf (0.87) using eluent of hexane:diethylether:formic acid. Results of the analysis of biodiesel quality obtained the density at 15°C was 864 kg/m3, the viscosity at 40 °C was 2.57 mm2/s, and the water content was 4%. Based on the parameters ofthe density at 15 °C and the viscosity at 40 °C, the product of biodiesel met the requirements of SNI, while in term of the water content the product did not meet the requirements of SNI.

scholarly journals Uji Kelayakan Minyak Biji Ketapang sebagai Bahan Isolasi Cair Transformator

DIELEKTRIKA ◽  
2021 ◽  
Vol 8 (1) ◽  
pp. 21
Author(s):  
I Made Ari Nrartha ◽  
Julia Kamilatin ◽  
Warindi Warindi
Keyword(s):  
Moisture Content ◽  
Water Content ◽  
Seed Oil ◽  
Power Transformer ◽  
Environmentally Friendly ◽  
Electrical Equipment ◽  
Transformer Oil ◽  
Test Results ◽  
Insulating Material ◽  
Over Time

The transformer is an electrical equipment that functions to change the voltage of alternating current from one level to another. Inside the transformer, especially the power transformer, there is transformer oil which functions as a coolant which transmits heat to the fins of the transformer as well as an arc extinguisher in case of sparks in the transformer windings. Transformer oil is generally obtained from petroleum which is decreasing over time and is less environmentally friendly so that other alternatives are needed to overcome it. This research on the feasibility of ketapang seed oil as a liquid transformer insulating material is intended to determine the feasibility of ketapang seed oil based on the permitted used transformer oil specifications (SPLN 49-1: 1982 and IEC 60296: 2012). This test is carried out by several types of tests, namely testing the moisture content, density, viscosity, and testing the oil breakdown stress. From the test results, it was obtained that the water content of ketapang seed oil was 10 mg/kg, the density value was 0,921 gram/cm3, the viscosity value was 14,665 cSt and the breakdown stress value was 68,9 kV. From these results, based on the new transformer liquid insulating oil specifications, ketapang seed oil still does not meet the standards seen from the density value of the oil.

scholarly journals KARAKTERISTIK DAN SKRINING FITOKIMIA EKSTRAK ETANOL 70% BATANG KEPUH (Sterculia foetida L.)

Jurnal Kimia ◽  
2019 ◽  
Vol 13 (1) ◽  
pp. 22
Author(s):  
N. P. S. E. Cahyani ◽  
J. Susiarni ◽  
K. C.S. Dewi ◽  
N. L.P. Melyandari ◽  
K. W.A. Putra ◽  
...  
Keyword(s):  
Moisture Content ◽  
Water Content ◽  
Ethanol Extract ◽  
Phytochemical Screening ◽  
Residual Solvent ◽  
Solvent Content ◽  
Residual Content ◽  
Ethanol Level ◽  
Anti Inflammatory

Kepuh (Sterculia foetida L) is a type of kapok plant that has been scientifically proven to have activity as an anti-inflammatory and analgesic. 70% ethanol extract of stem stem is obtained by maceration using 70% ethanol. Examination of the characteristics of 70% ethanol extract of kepuh stem included organoleptic, of moisture content and determination of residual solvent content. Phytochemical screening of 70% ethanol extract of kepuh bark includes: alkaloid, flavonoid, saponin, tannin , polyphenol, and examination of glycosides. The results of the examination of the characteristics of 70% ethanol extract of kepuh stem obtained water content of 8.66 ± 0.748%, the residual content of the solvent had a 0 (zero) ethanol level. The results of phytochemical screening showed 70% ethanol extract of stem stem containing steroid compounds, triterpenoids, flavonoids, saponins, tannins and polyphenols. The identification using UV-Vis spectrophotometry produced ? 212, the absorbance was 1.8601 and ? 284, the absorbance was 0.42186.

Characterization of Shear Strength and Interface Friction of Organic Soil

2020 ◽  
Vol 857 ◽  
pp. 203-211
Author(s):  
Majid Hamed ◽  
Waleed S. Sidik ◽  
Hanifi Canakci ◽  
Fatih Celik ◽  
Romel N. Georgees
Keyword(s):  
Shear Stress ◽  
Shear Strength ◽  
Internal Friction ◽  
Moisture Content ◽  
Water Content ◽  
Friction Angle ◽  
Structural Materials ◽  
Organic Soil ◽  
Internal Friction Angle ◽  
Interface Friction

This study was undertaken to investigate some specific problems that limit a safe design and construction of structures on problematic soils. An experimental study was carried out to examine the influence of loading rate and moisture content on shear strength of organic soil. Influece of moisture content on interface friction between organic soil and structural materials was also attempted. A commonly used soil in Iraq was prepared at varying moisture contents of 39%, 57% and 75%. The experimental results showed that the increase in water content will decrease the shear stress and the internal friction angle. An increase of the shearing rate was found to decrease the shear stress and internal friction angle for all percetanges of water contents. Further, direct shear tests were carried out to detect the interface shear stress behavior between organic soil and structural materials. The results revealed that the increase in water content was shown to have significant negetavie effects on the interface internal friction and angle shear strength.

Dispersion studies on Gezira soil

1941 ◽  
Vol 31 (4) ◽  
pp. 466-478 ◽  
Author(s):  
T. N. Jewitt
Keyword(s):  
Moisture Content ◽  
Water Content ◽  
Initial Moisture Content ◽  
Degree Of Dispersion ◽  
Heavy Clay

1. The degree of dispersion on shaking of the heavy clay Gezira soil has been studied in relation to its initial moisture content when it is added to the water. A minimum dispersibility was found at about 7% initial moisture content. Such behaviour is different from that found with certain English soils by Puri & Keen.2. Spontaneous dispersion was studied using the same soil, and by this method it was found that the dispersion decreases with increasing moisture content over a range of zero to 9% moisture.3. This relation between dispersion and water content is discussed in relation to possible effects in the field of practice. Attention is drawn to possible seasonal and daily differences in the effect of rainfall.

scholarly journals KARAKTERISTIK SIFAT-SIFAT KIMIA DAN ORGANOLEPTIK KUE KERING BERBAHAN DASAR PATI SAGU, UBI KAYU, UBI JALAR DAN KELADI

2016 ◽  
Vol 5 (1) ◽  
pp. 1
Author(s):  
Febby J Polnaya ◽  
Rachel Breemer
Keyword(s):  
Moisture Content ◽  
Water Content ◽  
Sweet Potato ◽  
Sensory Analysis ◽  
Total Protein ◽  
Proximate Composition ◽  
Ash Content ◽  
Crude Fiber ◽  
Brownish Yellow ◽  
Color Texture

The purpose of this research was to characterize chemical and sensory properties (color, texture, taste and liking) of starch-based sago, cassava, sweet potato and cocoyam cookies. Analysis of cookies include moisture content, ash, fat, protein, crude fiber and sensory analysis including color, texture, taste and likeness). The proximate composition indicated that the water content of cookies varied between 1.48 to 2.05%, ash content of 0.65 to 0.72%, 19.23 to 21.76% of fat, crude fiber from 0.41 to 0.71% and 1.33 to 2.42% of total protein. Based on organoleptic tests, the color of cookies was yellow to brownish-yellow, with crispy texture, the taste was sweet and were mostly preferred.

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