1,721,211 research outputs found
Penentuan Kadar Besi dari Air Boiler dengan Metode Spektrofotometri
No full textExperimental determination of iron content in boiler water in PT.SOCI MAS was done spectrophotometrically with pharo 300 spectrometer instrument at 510 nm wavelength. Results obtained during the period February 13 to February 20, 2017 showed that Fe content before the water is fed into the boiler is 0.07 ppm to 0.08 ppm when the boiler water is added the Fe content is 0.10 ppm up to 0.142 ppm. This indicates the requirements set by PT. SOCI MAS is Fe content before water is inserted into boiler 0,5 ppm when water is released Fe content is > 0,2 ppm.Telah dilakukan percobaan penentuan kadar besi pada air boiler pada PT. SOCI MAS secara spektrofotometri dengan alat spektrometer pharo 300 pada panjang gelombang 510 nm. Hasil yang diperoleh selama periode 13 Februari sampai dengan 20 Februari 2017 menunjukkan bahwa kandungan Fe sebelum air dimasukkan kedalam boiler adalah 0,07 ppm sampai dengan 0,08 ppm dan pada saat air boiler dimasukkan kandungan Fe adalah 0,10 ppm sampai dengan 0,142 ppm. Hal ini menunjukkan persyaratan yang ditetapkan oleh PT. SOCI MAS yaitu kandungan Fe sebelum air dimasukkan kedalam boiler 0,5 ppm dan pada saat air dikeluarkan kandungan Fe adalah > 0,2 ppm.Kertas Karya Diplom
Penggunaan Kitosan Silver sebagai Pengisi dalam Pembuatan Sabun Transparan Antibakteri
No full textThis study aims to determine the use of chitosan silver as a filler in the manufacture of transparent antibacterial soap with no chitosan, the addition of chitosan and the addition of chitosan silver. Chitosan is a compound derived from the process of chitin deacetylation and is a natural antimikroba compound, and is widely used in the cosmetic field the process of making transparent soaps by semi-heat method at 700C. Transparent soap quality analyzes included water content, pH, free fatty acid and free alkali levels and antibacterial activity test of Staphylococcus aureus and Escherichia coli. The results of transparent soap that meet the SNI standards are found in the addition of silver chitosan that is 11,25%, 8,00, 1,8% and for the free alkali level is not detected the results of testing of transparent soap antibacterial activity against Staphylococcus aureus and Escherichia coli bacteria found in the addition of chitosan Ag is 23,05 and 35,65 nm.Penelitian ini bertujuan untuk mengetahui pengunaan kitosan silver sebagai pengisi dalam pembuatan sabun transparan antibakteri dengan tanpa kitosan, penambahan kitosan dan penambahan kitosan silver. Kitosan adalah senyawa yang diperoleh dari proses deasetilasi khitin dan merupakan senyawa antimikroba alami, dan banyak dimanfaatkan dalam bidang kosmetik. Proses pembuatan sabun transparan dengan metode semi-panas pada suhu ± 700C. Analisis mutu sabun transparan meliputi pengujian kadar air, pH, asam lemak bebas dan kadar alkali bebas dan pengujian aktivitas antibakteri Staphylococcus aureus dan Escherichia coli. Hasil sabun transparan yang memenuhi standar SNI terdapat pada penambahan kitosan silver yaitu 11,25%, 8,00, 1,8% dan untuk kadar alkali bebas tidak terdeteksi. Hasil pengujian aktivitas antibakteri sabun transparan terhadap bakteri Staphylococcus aureus dan Escherichia coli terdapat pada penambahan kitosan Ag yaitu 23,05 dan 35,65 nm.Skripsi Sarjan
Pengaruh Penambahan SO2 terhadap Bubur Pulp yang Telah Diputihkan pada Proses Pulp Machine di Pt. Toba Pulp Lestari, Tbk – PORSEA
No full textThe objective of this study was to find out the effect of Sulfur Dioxide (SO2) adding
on the bleached pulp in the bleaching process that was going to be sent to the pulp
machine.In this unit stage, the pulp that was received from the bleaching unit would
be processed and printed into dried pulp layers. The layers, this, would be processed
into bales which are ready to sell in the market. The main function of the pulp
machine process is to remove as much as possible the water lies beneath the pulp
without damaging the pulp layers. Beside the water removing, it was necessary to do
pH lkevel controlling for the level of 5 - 7. The adding of SO2 was aimed to control
the pH level of the pulp to meet the expected pH level in the final product of the pulp
layers.56 HalamanKertas Karya Diplom
Synthesis and Characterization of Carboxymethyl Chitosan with Nanogold in Moisture Gel Preparations as A Whitening Agent
No full textThe development of cosmetics from time to time has made significant advances, especially in the preparation of moisture in gel form. Moisture gel is a semisolid system consisting of a suspension made up of small organic particles or large organic molecules, penetrated by a liquid, gel or also known as jelly. jelly. Gel has the ability to moisturize with ingredients that contain lots of water, has a cooling effect which is good for use in hot weather and is suitable for oily skin, so it is very suitable for use on Indonesian skin. Carboxymethyl chitosan has more carboxyl groups so that hydrogen bonds occur with water molecules, so it can hind water more strongly which has the potential to keep facial skin moisturised. Nano gold in the preparation has a function as an antidote to free radicals and anti-bacterial. In the study, Niacinamide was used as a whitening agent or anti-stain in the preparation of moisture gel. The purpose of this study was to formulate and evaluate a moisture gel preparation using nanogold and carboxymethyl chitosan containing niacinamide as a whitening agent or anti-stain. Moisture gel formadation was carried out by preparing a concentration of 20 ppm nanogold, 0.20% carboxymethyl chitosan and 3% concentration of niacinamide which were then mixed with a gel base with a concentration of 0.30% Evaluation of moisture gel preparations containing nanogold, carboxymethyl chitosan and niacinamide includes stability test pH test, homogeneity text, viscosity test, irritation test, anti-stain effectiveness test (moisture, smoothness, pores, stains and wrinkles), antioxidant test and antibacterial test. The results of the evaluation of the moisture gel were stable in storage for 4 weeks at room temperature. pH 5.6-4.5: homogeneous, viscosity 64.5 mPs; does not irritate the skin. The effectiveness of anti-staining moisturizing gel preparations gives percent moisture recovery 13.33%-83.33%, smoothness 17.64%-50%, pore 54.54%-86.36%, stain 76.92%-96.29%, and wrinkles 61.11% -88.88%, the zone of inhibition for S. aureus and P. acnes bacteria with optimum values were 8.5 mm and 12.5 mm respectively and the percentage of antioxidant activity was 53.49% Thus it
can be concluded that nanogold and carboxymethyl chitosan containing niacinamide
as whitening agents can be formulated into cosmetic moisture gel preparations.113 PagesSkripsi Sarjan
Penentuan Kadar Sulfat dalam Air Sumur Bor dan Air Filter Medan Permai dengan Menggunakan Alat Spektrofotometer Portable Dr-2010
No full textThe research about determination of sulphate content in drilled well water and water filter of Medan Permai at PDAM Tirtanadi Sumatera Utara was carried out. Determination of sulphate content is done by using Spectrophotometer DR-2010. The purposes of this research is to know the sulphate content in drilled water and water filter of Medan Permai and comparing it with drinking water quality requirement according to the minister of health of the Republic of Indonesia No.492/MENKES/PER/IV/2010. The results show that the sulphate content of drilled well water is 0,9602 mg/L and sulphate content of water filter is 0,9602 mg/L. All of those data prove that the sulphate content of drilled well water and water filter produced by Medan Permai meet drinking water quality requirement according to the health minister of the Republic Indonesia No.492/MENKES/PER/IV/2010.Penelitian tentang penentuan kadar Sulfat dalam air sumur bor dan air filter Medan Permai di PDAM Tirtanadi Sumatera Utara telah dilakukan. Penentuan kadar Sulfat dilakukan dengan menggunakan alat Spektrofotometer DR-2010. Tujuan dari penelitian ini adalah untuk mengetahui kadar sulfat dalam air sumur bor dan air filter Medan Permai dan membandingkannya dengan persyaratan kualitas air minum menurut Menteri Kesehatan Republik Indonesia No.492/MENKES/PER/IV/2010. Hasil penelitian menunjukkan bahwa kadar sulfat dari air sumur bor adalah 0,9602 mg/L dan kadar sulfat air filter adalah 0,9602 mg/L. Hasil-hasil tersebut membuktikan bahwa kadar sulfat dari air sumur bor dan air filter Medan Permai memenuhi persyaratan kualitas air minum menurut Menteri Kesehatan Republik Indonesia No.492/MENKES/PER/IV/2010.Kertas Karya Diplom
Formulations and Characterisations of Body Scrub Carboksimetil Toxics as Antibacteries
No full textChitosan has a well-developed function in a variety of fields and products. One of the interesting functional properties of the chitosan to develop is its properties as antibacterial that can remove dead skin cells and also as an antioxidant. Skin damage can be reduced by using body scrub because it can remove dead skin cells and lock moisture on the skin. The study aims to formulate a body scrub where the concentrations of carboxymethyl chitosan added vary between 0.5%, 1% and 1.5%, which can inhibit the activity of gram-positive bacteria Staphylococcus epidermidis. The determination of optimal stability and formula was obtained from the body scrub evaluation which included pH tests, viscosity tests, emulsion stability tests and hedonic tests, volunteer irritation tests, and antibacterial tests. The results of the 8 week study showed that the body scrub meets the pH test requirements (4,5-8) of SNI 16-4339-1996, the viscosity test (2,000-50,000 cP) is improved and qualifies SNI16-4399-1996. For the test of the highest antibacterial activity at a concentration of 1,5% chitosan for bacteria Staphylococcus epidermidis with a barrier zone diameter of 10,12 mm.64 PagesSkripsi Sarjan
Penentuan Bilangan Iodin pada Hydrogenated Palm Kernel Oil (Hpko) dan Refined Bleached Deodorized Palm Kernel Oil (Rbd Pko)
No full textHave been conducted Determination of Iodin Value by method titration to some
Hydrogenated Palm Kernel Oil (HPKO) and Refined Bleached Deodorized Palm
Kernel Oil (RBDPKO). The result of analysis obtained the Iodin Value in
Hydrogenated Palm Kernel Oil (A) = 0,16 gr I2/100gr, Hydrogenated Palm Kernel
Oil (B) = 0,20 gr I2/100gr, Hydrogenated Palm Kernel Oil (C) = 0,24 gr I2/100gr.
And in Refined Bleached Deodorized Palm Kernel Oil (A) = 17,51 gr I2/100gr,
Refined Bleached Deodorized Palm Kernel Oil (B) = 18,10 gr I2/100gr, Refined
Bleached Deodorized Palm Kernel Oil (C) = 17,58 gr I2/100gr.41 HalamanKertas Karya Diplom
Analisis Kadar Nitrat (No3) dan Nitrit (No2) dari Limbah Cair Industri Karet dengan Menggunakan Spektrofotometer pada Balai Riset Standardisasi Industri Medan
No full textMany rivers now that can not simply be used, because of contamination by human activities. Sources of sewage pollution can be either domestic or non domestic waste is a liquid. Liquid waste is discharged into the river, if excessive can cause environmental damage. One of the chemicals contained in waste water is Nitrate (NO3) and Nitrite (NO2). Nitrate (NO3) and Nitrite (NO2) is a chemical compound that is toxic to the environment. In this analysis, determination of nitrate and nitrite in the waste rubber spectrophotometer. From analysis of obtained results has been done for levels of Nitrate (NO3) was 1,6 mg / L ; 7,3 mg / L and 35,6 mg / L, while for the levels of Nitrite (NO2) is 0,053 mg / L ; 0,062 mg / L and 0,109 mg / L. From the results it is known that liquid waste from the rubber industry in the third week exceeds the quality standard set by the Minister of Environment No 51 in 1995 that is 20 mg / L for Nitrate (NO3) and Nitrite (NO2) 1 mg / L.51 HalamanKertas Karya Diplom
Pengaruh Penggunaan Poly Aluminium Chloride (PAC) pada Penjernihan Air Baku Sungai Deli terhadap pH dan TDS (Total Dissolved Solid) di PDAM Tirtanadi
No full textExperimental Effect of using Poly Aluminum Chloride on the raw water purification of Deli River to pH and TDS (Total Dissolved Solid) used by PDAM Tirtanadi water treatment. The concentration of use of Poly Aluminum Chloride (PAC) in raw water has an average valuable pH of 7.1 and TDS of 150 mg/l. Concentration of PAC use in raw water is respectively 30 ppm, 32.5 ppm, 35 ppm, 37,5 ppm, 40 ppm, 42, 5 ppm, stirred with agiator contained in Jar Test tool with a fast rotation speed of 140 rpm for 5 minutes and then a long rotation speed of 50 rpm for 10 minutes, then the agiator is stopped so that the floc-floc formed settles after that water is quited for 20 minutes. Then measured TDS by using TDStester11+ and pH measured with a pH comperator. From the experimental results obtained pH value obtained after the addition of coagulant PAC is about 7.0-6.6 and Total Dissolved Solid (TDS) range from 131-115 mg / L. The pH and Total Dissolved Solid (TDS) value of the experiments on river water is feasible to use because it meets the quality standard according to the Minister of Health Decree No.494/Menkes/Per/IV/ 2010.Telah dilakukan percobaan Pengaruh Penggunaan Poly Aluminium Chloride (PAC) pada Penjernihan Air Baku Sungai Deli terhadap pH dan Total Dissolved Solid (TDS) yang digunakan oleh Instalasi Pengolahan Air PDAM Tirtanadi. Air baku sebelum penambahan PAC memiliki pH rata-rata 7,1 dan TDS rata-rata yaitu 150 mg/L. Konsentrasi penggunaan Poly Aluminium Chloride(PAC) dalam air baku masing-masing 30 ppm, 32,5 ppm, 35 ppm, 37,5 ppm, 40 ppm, 42,5 ppm, yang diaduk dengan agiator yang terdapat pada alat Jar Test dengan kecepatan putaran cepat 140 rpm selama 5 menit dan kemudian kecepatan putaran lama 50 rpm selama 10 menit, lalu agiator dihentikan sehingga flok-flok yang terbentuk mengendap, setelah itu didiamkan selama 20 menit. Kemudian diukur TDS dengan menggunakan TDSTester11+ dan pH diukur dengan komperator pH.Dari hasil percobaan diperoleh nilai pH yang didapat setelah penambahan koagulan PAC adalah sekitar 7,0-6,6 dan kadar Total Dissolved Solid (TDS) berkisar 131-115 mg/L. Nilai pH dan Total Dissolved Solid (TDS) dari percobaan pada air baku Sungai Deli memenuhi standar baku mutu menurut Permenkes No.494/Menkes/Per/IV/2010.Kertas Karya Diplom
Penyediaan Kitosan Oligomer dari Limbah Kulit Udang Lipan (Squilla Mantis) sebagai Efek Anti Mikroba
No full textWe report the provision of chitosan oligomers from shrimp shell waste(Squilla Mantis) centipede as anti-microbial effect. Chitosan oligomer obtained by adding 1 ml of 0.5M NaNO2 in chitosan solution and then incubated for one night at room temperature. Depolymerization of chitosan can be determined by looking at a decrease in its viscosity by using viscometer oswald and molecular weight using the equation Kuhn-Mark-Houwink. Antibacterial test was determined by agar diffusion method. The results showed that the viscosity value of the viscosity standard oligomers with the addition of 1 ml of NaNO2 decreased by 76,49% and the molecular weight decreased by 80.94%. Antimicrobial Test uses two microbesstaphylococcus aureus and Escherichia coli with variations in the concentration of 0,5%, 1%, 1.5%, 2% and 2,5% chitosan oligomers, anti-microbial test results obtained the largest clear zone on chitosan oligomers with a concentration of 1% is equal to 12.6 in Escherichia coli and 14.9 in staphylococcus aureus.Telah dilakukan penelitian mengenai penyediaan kitosan oligomer dari limbah kulit udang lipan (Squilla Mantis)sebagai efek anti mikroba. Kitosan oligomer diperoleh dengan menambahkan 1 ml NaNO2 0,5M pada larutan kitosan kemudian di inkubasi selama satu malam pada suhu ruang. Depolimerisasi kitosan dapat diketahui dengan melihat penurunan viskositas nya dengan menggunakan viskosimeter oswald dan berat molekul dengan menggunakan persamaan Mark-Kuhn-Houwink. Uji antibakteri ditentukan dengan metode difusi agar. Hasil penelitian menunjukkan bahwa nilai viskositas oligomer dari viskositas standart dengan penambahan 1 ml NaNO2 mengalami penurunan sebesar 76,49% dan nilai berat molekul mengalami penurunan sebesar 80,94%. Uji anti mikroba menggunakan dua mikroba staphylococcus aureus dan escherichia coli dengan variasi konsentrasi 0,5%. 1%, 1,5%, 2% dan 2,5% kitosan oligomer, dari hasil uji anti mikroba di peroleh zona bening terbesar pada kitosan oligomer dengan konsentrasi 0,5% yaitu sebesar 12,6 pada escherichia coli dan 14,9 pada staphylococcus aureus.62 HalamanSkripsi Sarjan
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