1,721,023 research outputs found
Analisa Perbandingan Nilai PRI Darfi Produk Sir 20 dan Sir 3 untuk Temperatur yang Berbeda-Beda
No full textPlastisity Retention Index ( PRI ) was the measurement of rubber endurance of the heating
(oxidation) in the high temperature. The PRI value was measured from the pliancy size of still
backward raw rubber if the sample of this rubber was heated while 30 minutes in the temperature
of 1400
C. Plastisitas were the comparison between the value of the plasticity after the heating
towards the value of the plasticity of early before the heating. This grating was done with the
implement wallace plastimeter where being used by the temperature variation that differed that is
in the temperature 1350
C, 140 0
C and 1450 C.Variasi this temperature was carried out to know
rubber endurance of the high temperature so as to be able to be known by what temperature that
was appropriate to use.from results of the trial that was carried out were received that
temperature that was appropriate was used was in the temperature 1400
C that is 78 % and in
accordance with the SNI standard.44 HalamanKertas Karya Diplom
Pemanfaatan Cangkang Kelapa Sawit sebagai Arang Aktif dengan Menggunakan Aktivator H3PO4 pada Pusat Penelitian Kelapa Sawit (PPKS) Medan.
No full textIn the research of making activated charcoal from this oil palm shell using
chemical activation, with H3PO4 activator with concentration of 5 ; 10 and 20%.
Carbonation is carried out at temperatures of 2000C and 4000C for 20; 40 and 60
minutes. This study aims to determine the characteristics of palm shells as
activated charcoal through proximate test in the form of water content, ash content
and absorption of activated carbon to iodine number.
The research can be concluded on the method of analysis of the results obtained at
6000C carbonation temperature for 2 hours and 22 hours of soaking time to
produce activated charcoal with condition : moisture content of 0,020 - 0,077%,
ash content of 1,301- 1,445% and adsorption capasity of iodine 2,3 - 18,89%.47 HalamanKertas Karya Diplom
Analisa Kadar KMnO4, Warna, dan Kekeruhan pada Sumur Bor Terdapat Daerah Percut Sei Tuan, Perumnas Mandala, dan Desa Patumbak
No full textResearch on Organic Substance Analysis (KMO4), Color and Turbidity of Well Drilled Water at Perci Sei Tuan Area, Perumnas Mandala, and Patumbak Village were conducted. The purpose of this study is to conduct a wellbore water well check whether it is feasible to use according to PERMENKES RI number 416 / Menkes / Per / IX / 1990. Water samples that have been prepared from some point that is from Percut Sei Tuan, Perumnas Mandala, and Patumbak, prepared by the process of Test of permanganate Value with titrimetric titration and Tests of Turbidity and Color values using Spectro Pharo 300. The results obtained that the samples tested in the area of Perci Sei Tuan and Perumnas Mandala have passed the maximum standard of PERMENKES RI number 416 / Menkes / Per / IX / 1990. While in Patumbak Village still below maximum standards. The results of the Turbidity and Color Test as well as the Percussion Area and Perumnas Mandala have exceeded the maximum standard limit of PERMENKES RI number 416 / Menkes / Per / IX / 1990. This indicates that the Water Well Drilling at Perci Sei Tuan and Perumnas Mandala is not feasible to be used or consumed, because it can cause disruption to health and others.Telah dilakukan penelitian Analisa Kadar Zat Organik (KMO4), Warna, dan Kekeruhan pada Air Sumur Bor yang Terdapat di Daerah Percut Sei Tuan, Perumnas Mandala, dan Desa Patumbak. Tujuan dari penelitian ini adalah untuk melakukan pemeriksaan air sumur bor apakah sudah layak digunakan menurut PERMENKES RI nomor 416 / Menkes/ Per/ IX/ 1990. Sampel air yang sudah disiapkan dari beberapa titik yaitu dari Percut Sei Tuan, Perumnas Mandala, dan Patumbak, sampel disiapkan melalui proses Uji Nilai permanganat dengan titrasi titrimetri dan Uji Nilai Kekeruhan serta Warna dengan menggunakan Spectro Pharo 300. Hasil yang diperoleh bahwa sampel yang di uji pada Daerah Percut Sei Tuan dan Perumnas Mandala sudah melewati standart maksimum dari PERMENKES RI nomor 416 / Menkes/ Per/ IX/ 1990. Sedangkan pada Desa Patumbak masih dibawah standar maksimum. Hasil Uji Kekeruhan dan Warna juga pada Daerah Percut sei Tuan dan Perumnas Mandala sudah melewati batas standar maksimum PERMENKES RI nomor 416 / Menkes/ Per/ IX/ 1990. Hal ini menunjukkan bahwa Air Sumur Bor di Percut Sei Tuan dan Perumnas Mandala tidak layak untuk digunakan ataupun dikonsumsi, karena dapat menyebabkan gangguan pada kesehatan dan lainnya.Kertas Karya Diplom
Pengaruh Temperatur terhadap Penyerapan So2 Oleh Chilled Water pada So2 Absorber Unit Chemical Plant PT. Toba Pulp Lestari, Tbk – Porsea
No full textObservations have been done in PT. Toba Pulp Lestari Tbk - Porsea on the effect
of temperature on the absorption of SO2 by chilled water on SO2 absorber.
Sampling was done by one hour once a day. At the unit's sulfur dioxide gas,
which determines the success of the stage production in terms of both quality and
quantity terms is the stage of absorption of sulfur dioxide. Absorption of SO2 in
this unit uses chilled water (cold water temperature target from 8.00 to 8.70 0C).
In accordance with the observations made, for the chilled water temperature by
8.70 0C then SO2 is absorbed as much as 60.76 kg. The higher the temperature of
the chilled water absorption of SO2 gas decreases and vice versa. Absorption
using chilled water indirectly so as to lower the temperature and increase the
solubility of SO2.57 HalamanKertas Karya Diplom
Analisa Kadar Protein Kasar dalam Kacang Kedelai, Kacang Tanah dan Kacang Hijau Menggunakan Metode Makro Kjeldhal Sebagai Bahan Makanan Campuran
No full textContent analysis has been carried crude protein content in soybean, peanut and green
been Kjeldhal macro method is through the determination of Nitrogen content in the
sample material. Nitrogen compounds converted to ammonium sulfate by
concentrated H2SO4. Ammonium sulfate that is formed are described with NaOH.
Ammonia is liberated tied with boric acid and the amount of nitrogen, so if can be
calculated % Nitrogen in sample. Sample used in this analysis were taken from
Simpang Limun market. From the result obtained by analizing levels of crude protein
per 100 gram : 31,8 g of soybean, peanut = 23,9 g and green beans = 23,7 g. It can be
concluded that the crude protein content in soybean, peanut and green been containing
the essential amino acid which is high enough, and can meet the numbers of protein
adequacy in children 1-6 years old is 23-32 g of protein (according to sources :
Almatsier, on table. 8).53 HalamanKertas Karya Diplom
Pengaruh Temperatur Pasta terhadap Mutu Anoda Di PT. Indonesia Asahan Aluminium
No full textIn the process of processing raw materials into anode common problems that can harm the company. Problems among the temperature pasta anode at the time of mixing will affect the level of quality anoda at the time used in the oven anoda reduction.
Ko-kneader function as a tool to mix the raw materials (coke, butt, pitch, green and scrap). In the process this raw material is mixed gradually. The first stage coke and butt first heated with the temperature 165o C in order to achieve optimum temperature during the mixing process, this is done in the preheater and then flowed to the co-kneader. The second green scraps and pitch directly entered into the co-kneader so that the pasta will be reduced. Which is the main problem is how to handle or attempt to use a temperature that is stable and achieve the desired quality anoda company.
The way to maintain the temperature at the time of mixing pasta remain stable with the way each time marlotherm hot oil stream to the wall - a wall-ko kneader until the paste is ready for printing.44 HalamanKertas Karya Diplom
Analisa Kadar Asam Lemak Bebas (Alb) dan Kadar Air Crude Palm Oil(CPO) Pada Unit Vacuum Drier di Stasiun Klarifikasi di Pt Socfin Indonesia Perkebunan Tanah Gambus
No full textStudies have been conducted on the analysis of the levels of free fatty acids (FFA)
and water content of crude palm oil (CPO) on the unit at the factory vacuum drier
Socfin Indonesian oil palm plantation land PT psaltery. The study was conducted
through direct observation in the palm oil mill and through analysis examples of
palm oil prodused in the laboratory by taking parameter quality as an object of
analysis. Factors that affect the quality of palm oil harvesting them on time, the
process of collecting and transporting the fruit, and the degree of ripeness of the
fruit during processing in the factory. Levels of FFA and water content aretaken
from the analyzed sample of oil production in a row is 1.81-2.28% and 0.11-
0.14%, levels of FFA and water content were determined by the maximum factory
2.30% and 0.15%. Then the value of the FFA content and water content that it
meets the factory standards.50 HalamanKertas Karya Diplom
Pengaruh Silika Gel terhadap Sifat Fisik dan Mekanik Papan Partikel dari Polipropilena dan Serbuk Batang Kelapa Sawit dengan Perendaman Asam Kloroasetat 3%
No full textResearch on the effect of Silica Gel on the physical and mechanical properties of
Particle Boards from Polypropylene and Palm Oil Trunk that has been soaked with
Chloroacetic Acid 3%, which the Palm Oil Trunk has been soaked for 24 hours using
Chloroacetic Acid 3% solution then filtered and rinsed until neutral. Furthermore,
Polypropylene which functionalized with Maleic Anhydride was refluxed to form PP-g-AM
then characterized by using a melting point test, determination of the degree of grafting and
Spectroscopy Fourier Transform Infra-Red (FTIR) analysis. PP-g-AM formed has a grafting
degree of 9.506% and has a melting point of 162.06˚C which is used as an adhesive material
on the particle board. Then, in the manufacture of particle board by using the composition of
Palm Oil Trunk, Polypropylene, PP-g-AM , Benzoyl Peroxide, Divinylbenzene and Silica Gel
with ratios of (70:40:30:2:3:0) g, (70:40:30:2:3:3) g, (70:40:30:2:3:6) g, (70:40:30:2:3:9)
g, (70:40:30:2:3:12) g, (70:40:30:2:3:15) g respectively as specimens I, II, III, IV, V, VI. The
particle board then tested for physical and mechanical properties based on SNI 03-2105-
2006 which included density test, moisture content test, thick development test, Modulus of
Rupture (MoR) test, Modulus of Elasticity (MoE) test. Analysis of particle board broken
fragment using Scanning Electron Microscopy (SEM). The results of SEM morphology
showed the influence of Silica Gel on the particle board and the overall test showed the best
composition is found in specimen III, where all the physical test and mechanical test values
were in accordance with the particle board quality standards of MoR values was 86,502
KgF/cm2 and MoE values was 32438,531 KgF/cm2.Penelitian mengenai pengaruh Silika Gel terhadap sifat fisik dan mekanik papan
partikel dari Polipropilena dan serbuk Batang Kelapa Sawit dengan perendaman Asam
Kloroasetat 3% telah dilakukan, di mana serbuk Batang Kelapa Sawit direndam selama 24
jam menggunakan larutan Asam Kloroasetat 3% kemudian disaring dan dicuci hingga netral.
Selanjutnya, Polipropilena yang difungsionalisasi dengan Anhidrida Maleat direfluks
sehingga membentuk PP-g-AM yang kemudian dikarakterisasi dengan menggunakan uji titik
leleh, penentuan derajat grafting dan analisa Spectroscopy Fourier Transform Infra-Red
(FTIR). PP-g-AM yang terbentuk memiliki derajat grafting 9,506% dan memiliki titik leleh
162,06˚C yang digunakan sebagai bahan perekat pada papan partikel. Kemudian, pada
pembuatan papan partikel dengan menggunakan komposisi serbuk Batang Kelapa Sawit,
Polipropilena, PP-g-AM, Benzoil Peroksida, Divinilbenzena dan Silika Gel dengan
perbandingan (70:40:30:2:3:0)g, (70:40:30:2:3:3)g, (70:40:30:2:3:6)g, (70:40:30:2:3:9)g,
(70:40:30:2:3:12)g, (70:40:30:2:3:15)g berturut-turut sebagai spesimen I, II, III, IV, V, VI.
Papan partikel kemudian diuji sifat fisik dan mekaniknya berdasarkan SNI 03-2105-2006
yang meliputi uji kerapatan, uji kadar air, uji pengembangan tebal, uji Modulus Of Rupture
(MoR), uji Modulus of Elasticity (MoE). Analisa patahan papan partikel dengan
menggunakan Scanning Electron Microscopy (SEM). Hasil dari morfologi SEM
menunjukkan adanya pengaruh Silika Gel terhadap papan partikel dan keseluruhan uji
menunjukkan komposisi yang paling baik terdapat pada spesimen III, di mana semua nilai uji
fisik dan uji mekaniknya sesuai dengan standar mutu papan partikel dengan nilai MoR
sebesar 86,502KgF/cm2 dan MoE sebesar 32438,531KgF/cm2.Skripsi Sarjan
Perbandingan Konsentrasi Sianida (Cn-) dan Ph pada Inlet dan Outlet dari Instalasi Pengolahan Air Limbah (Ipal) Industri Pengolahan Tepung Tapioka
No full textHave to determine cyanide concentration (CN-) and pH value at waste water
treatment plant tapioca flour processing industry. pH value determine using pH
paper whereas concentration of cyanide determine by spectroquant nova 60. pH
value from WWTP inlet PT.Sinar Intan Tapioka is 4, at PT. Florindo Makmur is
5, at PT. Sari Tani Sumatra is 5, at PT. Deli Sari Murni is 5, while pH value
WWTP outlet PT. Sinar Intan Tapioka is 8, at PT. Florindo Makmur is 8, at PT.
Sari Tani Sumatra is 7, at PT. Deli Sari Murni is 4. Whereas concentration of
cyanide (CN-) from WWTP inlet PT. Sinar Intan Tapioka is 0,432 mg/L, at PT.
Florindo Makmur is 0,622 mg/L,at PT. Sari Tani Sumatra is 0,552 mg/L, at PT.
Deli Sari murni is 0,444 mg/L. While concentration of cyanide (CN-) from
WWTP outlet PT.Sinar Intan Tapioka is 0,136 mg/L, at PT.Florindo Makmur is
0,119 mg/L, at PT.Sari Tani Sumatra is 0,061 mg/L, at PT. Deli Sari Murni is
0,444 mg/L. pH value and cyanide concentration of the sample at PT. Sinar Intan
Tapioka, PT. Florindo Makmur, PT. Sinar Intan Tapioka still meet the
requirements quality standart of waste water tapioca flour processing industry
according to KEP-51/MENLH/10/1995 appendix B VIII, while pH value and
cyanide concentration from waste water at PT. Deli Sari Murni exceeds quality
standart of waste water tapioca flour according KEP-51/MENLH/10/1995
appendix B VIII that is 0,3 mg/L.45 HalamanKertas Karya Diplom
Studi Pemanfaatan Bahan Pengemulsi Berbasis Minyak Kelapa untuk Produk Film Lateks Pekat Karet Alam dengan Agen Vulkanisasi Sulfur dan Dikumil Peroksida
No full textEmulsifying ingredient commonly used for latex on rubber plantations is ammonium
laurate (AL). Unfortunately, this agent had to be imported from abroad with the high
price. The usage of AAL combined with ALS as an emulsifier for natural rubber latex
has already been done. Both of the chemicals were added to the concentrated latex
with the various concentration of 0 v/v.%; 0,03 v/v.%; 0,05 v/v.%; 0.07 v/v.% and
0.09 v/v.% with the storage time of 0; 5;10; 15; 20 and 25 days. In this work, AL is
used as standard. The use of this emulsifier on the concentrated latex material
provided optimum value of MST at concentration of 0.07 v/v.% with storage time of
10-25 days and the outcome is in compliance with ASTM standards and ISO 2004.
Natural rubber latex films used in this work were vulcanised using sulfur by drying it
at a temperature of 1000
C for 30 minutes. At the same treatment the films were
vulcanised using dicumil peroxide at 1300
C. The resulting film are characterised in
term of their mechanical properties, morphology (SEM), swelling index, as well as
FTIR. The results of mechanical tests showed that the optimum tensile strength was
obtained at the addition of emulsifiers AL at 0.07 0 v/w.% of 1.09 MPa and the
elongation at break of 783%. Swelling index test decreased on the addition of
emulsifiers AL and AAL until a minimum value of 1.80 mm and 1.79 mm.
Morphological characteristics showed that without the addition of emulsifiers formed
aggregate increases. This result is different when compared with the addition of
emulsifiers. FTIR spectra did not show any chemical interaction between the
molecules of rubber and emulsifying agent and there is no significant change in
structureBahan pengemulsi lateks yang biasa digunakan pada perkebunan karet adalah
amonium laurat (AL). Amonium laurat ini diimpor dari mancanegara dengan harga
yang tinggi. Pada penelitian ini telah dilakukan penggunaan amida asam lemak
campuran berbasis minyak kelapa (AAL) dan amonium lauril sulfat (ALS) sebagai
bahan pengemulsi alternatif pada lateks karet alam. AAL dan ALS tersebut
ditambahkan pada lateks pekat dengan konsentrasi 0 v/v.%; 0,03 v/v.%; 0,05 v/v.%;
0.07 v/v.% dan 0.09 v/v.% dengan waktu penyimpanan 0; 5;10; 15; 20 dan 25 hari.
Standar yang digunakan adalah amonimum laurat (AL). Penggunaan bahan
pengemulsi pada lateks pekat adalah memberikan nilai optimum MST pada
konsentrasi 0,07 v/v.% dengan waktu penyimpanan 10-25 hari dan hasil ini
memenuhi standar ASTM D.1076 dan ISO 2004. Film lateks karet alam yang
digunakan divulkanisasi dengan sulfur dengan cara mengeringkannya pada suhu
100o
C selama 30 menit. Pada suhu 130o
C film lateks karet alam divulkanisasi
dengan menggunakan dikumil peroksida selama 30 menit. Hasil yang diperoleh
diamati dengan pengujian sifat-sifat mekanis, morfologi (SEM), uji swelling indeks
and FTIR. Hasil uji mekanik menunjukkan bahwa kekuatan tarik optimum diperoleh
pada penambahan bahan pengemulsi AL 0,07 v/v.% sebesar 1,09 MPa dan
perpanjangan putus 783%. Uji swelling indeks menurun pada penambahan bahan
pengemulsi AAL dan AL sampai nilai minimum sebesar 1,80 mm and 1,79 mm.
Karakter morfologi memperlihatkan bahwa tanpa penambahan bahan pengemulsi
agregat yang terbentuk meningkat dibandingkan dengan penambahan bahan
pengemulsi. Kemudian analisis spectrum FTIR tidak menujukkan adanya interaksi
kimia antara molekul karet dengan bahan pengemulsi sehingga tidak ditemukan
perubahan struktur secara signifikan.131 HalamanDisertasi Dokto
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