Pengujian Permeabilitas Tanah Di Kecamatan Tuah Madani Kota Pekanbaru

ABSTRACT The development of infrastructure development in Indonesia is increasing in various areas such as the construction of reservoirs, ponds, dams and other constructions. One of the important things that form the basis of development is the land because almost all buildings stand on the ground. Therefore, it is necessary to know the type of soil used and the permeable nature of the soil. …

Pembuatan Lilin Aromaterapi Dengan Penambahan Larutan Ekstrak Minyak Serai Wa…

ABSTRACT Aromatherapy candles are an alternative application of inhalation, namely the inhalation of aroma vapors produced from a few drops of oil derived from plant extracts. The aroma used is citronella oil extract solution obtained from soxhletation extraction of citronella with ethanol solvent. This study aims to make aromatherapy candles with citronella oil extract and to perform characte…

Efektivitas Penjerapan Ion Cu2+ Menggunakan Karbon Aktif Batang Singkong (Man…

ABSTRACT The rapid development of the industry has led to an increasing amount of waste generated, including in the electroplating industry. The electroplating process produces liquid waste, which causes environmental pollution. The generated liquid waste contains heavy metals, such as copper (Cu). The maximum allowable concentration of copper ions (Cu2+) in the environment, based on Regulatio…

Efektivitas Penjerapan Ion Cu2+ Menggunakan Karbon Aktif Batang Singkong (Man…

ABSTRACT The rapid development of the industry has led to an increasing amount of waste generated, including in the electroplating industry. The electroplating process produces liquid waste, which causes environmental pollution. The generated liquid waste contains heavy metals, such as copper (Cu). The maximum allowable concentration of copper ions (Cu2+) in the environment, based on Regulatio…

Pembuatan Lilin Aromaterapi Dengan Penambahan Larutan Ekstrak Minyak Serai Wa…

ABSTRACT Aromatherapy candles are an alternative application of inhalation, namely the inhalation of aroma vapors produced from a few drops of oil derived from plant extracts. The aroma used is citronella oil extract solution obtained from soxhletation extraction of citronella with ethanol solvent. This study aims to make aromatherapy candles with citronella oil extract and to perform characte…

Proses Pirolisis Limbah Plastik High Density Polyethylene (Hdpe) Menjadi Baha…

ABSTRACT The high-density polyethylene (HDPE) plastic bags, more commonly known as "kantong kresek" in Indonesian, have become the most prevalent plastic waste polluting the environment. The plastic, composed of long-chain hydrocarbon molecules, is highly resistant to natural degradation, necessitating technologies that can manage plastic waste without creating new waste. The pyrolysis pro…

Proses Pirolisis Limbah Plastik High Density Polyethylene (Hdpe) Menjadi Baha…

ABSTRACT The high-density polyethylene (HDPE) plastic bags, more commonly known as "kantong kresek" in Indonesian, have become the most prevalent plastic waste polluting the environment. The plastic, composed of long-chain hydrocarbon molecules, is highly resistant to natural degradation, necessitating technologies that can manage plastic waste without creating new waste. The pyrolysis pro…

Pembuatan Lilin Aromaterapi (Ekstrak Oleoresin Daun Peppermint Dan Bunga Ceng…

ABSTRACT Aromatherapy candles are an alternative application of inhaling aroma vapor produced from a few drops of essential oil used, which produces an aroma that gives a therapeutic effect when burned to function as a sedative and room freshener. Clove flowers and peppermint leaves contain essential oils so they can be used as aromatherapy candles. This research studied the effect of adding p…

Analisa Perbedaan Nilai Porosity (Air Permeability) Offset Paper Dan Copy Pap…

ABSTRAK Porosity is defined as the amount of air (ml/min) that can be passed through from one side of the paper to the other. Paper porosity also affects the drying process and porosity needs to be maintained to make it easier to adjust printer ink and make it easier to vacuum feed on printing and copying machines. In the paper industry, there are two types of paper, that are offset paper and …

Pengaruh Density, Temperature, Dan Weak Wash Liquor (Wwl) Terhadap Total Titr…

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2007024982

Menentukan Optimum Dosis Penggunaan Wet End Oba (Optical Brightenic Agent) Te…

ABSTRACT Optical Brightenic Agent (OBA) is a compound that can give a light effect to an object that is exposed to light, so that the object will be whiter and luminous. Utilization of OBA at PT RAPP is used as an auxiliary material in achieving paper optical properties that comply with specified standards. OBA consists of three types, namely disulpho (wet end), tetrasulpho, and hexasulpho…

Analisis Pengaruh Kecepatan Thickener Terhadap Konsistensi Broke Dan Arus Lis…

ABSTRACT Broke System is one of the important materials in paper making. Broke is a fiber obtained from a sheet of paper obtained from a process on a paper machine. This fiber is called secondary fiber, because broke is a source of fiber obtained from recycled reject paper. Apart from paper breaks, broke can also be obtained from paper trim (even distribution of paper edges). Broke is divi…

Efisiensi Proses Absorpsi Gas Clo2 Di Clo2 Absorber #5 Pt Riau Andalan Pulp A…

ABSTRACT Chlorine dioxide (ClO2) is a chemical used as a bleaching agent in the bleaching pulp process. At PT RAPP's Integrated ClO2 Plant, Chlorine dioxide solution with a concentration of 10 ± 0.2 g/L was obtained through the absorption process of ClO2 gas with chilled water in the Absorber. The concentration of the desired solution is determined by how efficiently the absorption proces…

Pengaruh Dan Efektivitas Cleaning Super Concentrator Pada Evaporator #5

ABSTRACT Evaporator #5 is a unit used to thicken black liquor from 15% to 80% solid content before it is incinerated in recovery boiler. Black liquor is rich in sodium salts content, therefore in thickening process these salts exceed its solubility limit then precipitated in form of scale that decrease the evaporator’s performance. Scales in evaporator #5 can be removed using weak black liqu…

Analisis Perhitungan Energy Balance Heat Exchanger Shell And Tube Dan Mass Ba…

ABSTRACT Heat exchangers 411E104 and 411E237 are types of shell and tube heat exchangers. The shell part is filled with the cold medium, which is soft water, and the tube part is filled with the hot medium, which is black liquor. Soft water is a type of water with low levels of calcium and magnesium, while black liquor is the residual liquor after the cooking process. Soft water is purchased f…

Analisis Active Alkali Charge Terhadap Yield Pada Kraft Pulp A Model Fiberlin…

ABSTRACT Active alkali charge is the combined concentration of sodium hydroxide (NaOH) and sodium sulfide (Na2S) solutions in white liquor. The active alkaline charge in white liquor is useful for degrading lignin and other compounds (extractive) in wood and dissolving simple sugar groups that are still united in the pulp. This study aims to determine the effect of active alkaline charge on yi…

Strategi Shade Change Dari Shade 04 Ke 08

ABSTRACT World paper consumption increases every year. Currently, the world's need for paper is around 394 million tons, the growth in world paper demand is estimated to grow by an average of 2.1 percent per year so that the paper industry is required to produce paper in accordance with production targets and meet the paper quality set by Riau Andalan Kertas (RAK) technical. One way to achieve…

Analisis Pengaruh Parameter Pemasakan Continuous Digester Terhadap Kappa Numb…

ABSTRACT The cooking process of pulp can be considered successful if the desired kappa target is achieved. There has been technological change in the pulp making process, particularly in the cooking process which includes a shift from using a super batch digester to continuous digester, requiring a reassessment of each cooking parameter that affect kappa number. Through this research, the infl…

Pengaruh Natrium Karbonat (Na2co3) Dalam Intermediate Black Liquor (Ibl) Terh…

ABSTRACT This content can have a bad impact on the evaporator, which can cause scale. The purpose of observation from this final project is to determine the effect of the amount of sodium carbonate (Na2CO3) in the intermediate black liquor (IBL) on running time, and determine the optimal running time on evaporator #3. In the evaporator, running time is the period of time when the evaporator un…

Improve Old Soft Water To Fiberline #1 Zero Hardness

ABSTRACT One of the departments under the auspices of Riau Prima Energi's business unit is the Power Side Water Treatment Plant division. Soft Water in Fiberline is used as dilution in bleaching process. The quality of Soft Water parameters (total hardness) must be maintained because the content of Ca and Mg will affect the next process. The regeneration process in Soft Water is carried out by…