ABSTRACT Print quality is affected by the quality of the paper used. To get the desired paper quality, it is necessary to modify the fibers mechanically in the refining process which is the heart in the paper-making process. In addition to refining, the use of filler ratios will also affect the quality of the paper according to the desired paper grade. Fillers are natural minerals added to…
ABSTRACT The bleaching process is the final stage of bleached kraft pulp process using bleaching chemicals in the form of ClO2, NaOH, O2, and H2O2. The pulp bleaching system used by PT.RAPP is the Elemental Chlorine Free (ECF) system that is chlorine dioxide (ClO2). Bleaching sequence in Fiberline 1 consists of three stages, that is D0, EOP, and D1. The success of the bleaching process can…
ABSTRACT Thickness is the perpendicular (thickness) between two paper surfaces by measuring using a thickness measuring instrument, namely AutoLine 400 or L&W Micrometer. In this final project, the author observed and analyzed the factors that influenced the thickness of the MR080800 copier paper. Observations were made using secondary data contained in PMIS (Project Management Information…
ABSTRACT The Demin Plant produces pure mineral-free water which is used as boiler feed water. One of the units in the Demin Plant is strong acid cation (SAC) to remove cation ions using Dowex HCR-S cation resin. At certain times, this resin will be saturated so that it needs to be regenerated. The effective regeneration of the resin is an important aspect to ensure optimal performance of t…
ABSTRACT The quality of chips produced with the size of the pulp mill specification is called accept chip. The uniformity of chips length produced by a disc chipper is keys to increase pulping performance. A chipper which produced fewer pin chips and fine chips, while achieving a more consistent length to thickness ratio, would significantly improve pulping uniformity and pulp consistency.…
ABSTRACT One of the divisions in Riau Prima Energi is a water treatment plant which aims to process Kampar river water into clean water for the mill operation and townsite. The processing of raw water is a coagulation-flocculation process and uses a poly aluminum chloride (PAC) coagulant and polymer flocculant. In the coagulation-flocculation process, the impurities contained in the raw wa…
ABSTRACT The stringent competition in industry may demand all this producer always giving the best contribution in quality which best with no defect. This research aims to evaluate defect of In House Packaging. Using the Lean Six Sigma method analysis DMAIC (define, measure, analyze, improve and control). In define resulting 7 Critical to Quality (CTQ) could not be accepted in product. In …
ABSTRACT The consumer's need for electrical power varies from time to time which causes the mechanical load borne by the turbine to vary. This change in mechanical load causes a direct change to the work performed by the turbine shaft. Each turbine has a different efficiency value, depending on operational conditions. One of the operational conditions that influence is the steam pressure a…
ABSTRACT Currently the pulp and paper industry is experiencing rapid development. On the other side, raw materials are increasingly difficult to obtain. Therefore, the use of raw materials must be regulated as optimally as possible. The production process is regulated as efficiently as possible in order to reduce company expenses. The observations made this time discuss the effect of surface s…
ABSTRACT Cellular Lightweight Concrete (CLC) is a material obtained by introducing air bubbles into the CLC mixture, which the air grains are able to maintain the bubble structure in the curing processs. CLC can reduce construction costs and make it easier to work on. This research, aims to make CLC with addition graphene as an additive to determine the effect of adding graphene on compres…
ABSTRACT Ethylene oxide (C2H4O) which is also known as oxirane is an organic compound of the ether group. Ethylene oxide is a colorless gas, has a sweet smell, is flammable at room temperature and is a highly reactive compound. The main raw materials used in the manufacture of ethylene oxide by the Dow Meteor process are ethylene and oxygen. This plant is planned to operate for 330 days/ye…
ABSTRACT Bioethanol is one of the alternative energy substitutes for petroleum. the wasted of sago can be used for bioethanol production. The main component of sago is used for the production of bioethanol is lignocellulose which consist of cellulose, hemicellulose and lignin. Ethanol is made by hydrolisiys and fermentation with the help of an acid catalyst and saccharomyces cerevisiae. Th…
The study is the development of an e-module as an effort to reduce the students' misconceptions on ion equilibrium and pH of salt solution for 11th grade of SMA/MA. This study is motivated by the teacher saying that the ion equilibrium and pH of the salt solution was one of the materials that were difficult for students to understand and often misconceptions occurred. The teacher used fewer med…
ABSTRACT Fillers are natural minerals that are added to cellulose fibers to enhance the properties of paper. Fillers will fill the empty cavities between the fibers so that fillers can have a positive or negative impact on the sheet. In this final project, an analysis conducted on the effect of Precipitated Calcium Carbonate (PCC) & Ground Calcium Carbonate (GCC) ratio on offset paper char…
ABSTRACT A boiler or steam boiler is a device in the form of a closed vessel used to produce steam. Power Boilers use a variety of solid fuels ranging from Coal, Bark, Empty Fruit Bunch (EFB), Sludge, and Brown Fiber. Fuel is a substance that when heated will undergo a chemical reaction with an oxidizing agent (usually oxygen in air) to release heat. Observations in this final project have…
ABSTRACT Chips are the main raw material for pulp making, while logs are the raw material for making chips. To support increased chip production and good quality, it is very important to pay attention to the factors that influence it. Hauling is one of the processes that affects chip production. Hauling is the process of taking wood from the block to the chipping line, this process is clos…
ABSTRACT Biological treatment of wastewater with suspended systems has been widely used and worldwide for its treatment. This process is principally an aerobic process which organic compounds are oxidized to CO2 and H2O, NH4, and new biomass cells. To supply oxygen is done by blowing air mechanically. The most common and widely used wastewater treatment process is the Activated Sludge Proc…
ABSTRACT Analyzing the influence of cooking parameters on quality parameter pre-O2 viscosity is one of the important endeavors in order to increase dissolving pulp production grade in PT RAPP. The purpose of this research was to understand the effect of cooking parameters (H-Factor, cooking temperature, cooking time, equalizing temperature, HWL add volume) on quality parameter like dissolv…
ABSTRACT Linear Alkyl Benzene (LAB) is one of the organic chemicals in the form of clear liquids with the formula of mokelul C6H5CnH2n+1. LAB is used as raw material in detergent industry. LAB is chosen because it has a high rate of degradation so it is environmentally friendly (biodegradable). In 1995, UOP/CEPSA introduced a method of creating LAB using solid catalysts, called Detal Proce…
Bioactive compounds as drugs from microorganisms in today's era are needed, because the growth and production of the desired compounds from microorganisms can be controlled. This study aims to obtain antimicrobial bioactive compounds by isolating and purifying the secondary metabolite ethyl acetate extract of Fusarium LBKURCC41 isolates from fermentation using Huang's media by changing the carb…