ABSTRACT The rate of population growth in Indonesia every year is categorized as high, this causes a greater need for the use of water consumption which is in line with the amount of domestic wastewater produced. Domestic wastewater contains high organic matter, so it can reduce water quality if it is directly discharged into water bodies without prior treatment. One alternative treatment …
ABSTRAK Sago pulp is waste from the sago processing industry which is processed into sago flour and has the potential to be used as an alternative energy fuel. In this study, sago waste can be used as charcoal briquettes. Charcoal briquettes are made through several stages, namely composing, mixing with adhesive, pressing, and drying. Characteristics of the quality of briquettes include mo…
The rapid development of carbon-based two-dimensional nanomaterials has attracted the attention of researchers who are working on developing new materials with unique properties, one of which is graphene. As graphene continues to develop, researchers are persistently exploring various synthesis methods to produce high-quality graphene (with minimized layers and defects) in an economical ma…
The government has officially issued SNI 8966:2021 which contains standard parameters for biomass to be used as co-firing fuel. One of the biggest challenges of implementing co-firing is the unstable biomass supply. Therefore, by utilizing the abundant availability of palm frond waste, it is hoped that this problem can be overcome. This study was conducted to review whether oil palm fronds …
ABSTRACT The peat water has a high content of color and organic matter. One alternative for peat water treatment is coagulation-flocculation with natural coagulants. This study aims to determine the effect of pH and coagulant dose on the efficiency of removing color and organic matter from peat water using natural coagulants from melon seeds. The melon seeds were dried in the sun for 7 days an…
ABSTRACT The peat water quality found in the Riau Province does not meet the requirements for clean water, thus requiring treatment. The purpose of this research is to analyze the characteristics, organic matter and color adsorption efficiency of peat water, as well as to calculate the adsorption capacity and equilibrium model using crosslinked GLA chitosan beads. The method used is batch adso…
ABSTRACT Untreated liquid waste from tofu production, if directly disposed of without any treatment, will cause pollution. Therefore, it is necessary to treat the waste before it is discharged into the environment. The process used in the treatment of liquid tofu waste is biological treatment, utilizing the symbiosis of microalgae and bacteria to reduce pollutant parameters. This is achieved t…
ABSTRACT The ability to measure height is still fairly manual and requires sophisticated technology by just standing and knowing their height. Therefore, a device with a height detection system and audio output is required. The purpose of this research is to design a digital height measuring device using an ultrasonic sensor and an arduino uno-based buzzer. This tool is designed using Arduino …
ABSTRACT One of the most widely used electric motors as a drive is the 3-phase induction motor, because the construction is simpler and the rotation is relatively more constant with load changes compared to other types of electric motors. Based on the background above, the author is interested in understanding the principles and workings, designing and making and testing the ability of the des…
ABSTRACT Black liquor is a by-product of the remaining cooking solution in the Paper industry, which is a high viscosity organic alkaline mixture which contains water, lignin, cellulose, and inorganic sodium salts. Weak Black Liquor or WBL obtained from pulp washing generally contains 15-16% solid content. This WBL must be concentrated up to 80-82% or commonly called firing liquor and then sen…
ABSTRACT At this time, the development of the paper industry experienced a rapid increase, so that the paper industry was required to be able to meet the demand for quality paper for the needs of the global market. One way to meet paper quality is to go through several components in a paper machine and add chemicals to become paper that has the required quality. Chemicals added to meet paper q…
ABSTRACT Noise had the potential to affect comfort and health, especially from the operational activities of palm oil mill equipment. The risk of hearing damage to employees could be caused by noise exposure due to high noise levels or excessive cumulative exposure time. This study aimed to analyze the noise of the work environment at PT Bina Pitri Jaya, determined the maximum time of expo…
ABSTRACT Noise is an environmental hazard caused by excessive sound intensity. According to Minister of Environment Regulation No. 48 of 1996, noise refers to unwanted sounds from activities or operations that, at certain levels and durations, can disrupt human health and cause work accidents. This research aims to analyze environmental noise in the surroundings of Simpang Baru Panam Market, m…
ABSTRACT Pekanbaru City is one of the cities that has experienced an increase in the physical development of the city and the population. This results in higher population density. The pollutant that has a significant impact is falling dust. This study aims to determine the concentration of falling dust and Pb content in falling dust. The research method used was the gravimetric method and tes…
ABSTRACT The development of the tofu industry in Indonesia is very rapid along with the increasing consumption needs of the community, this can cause environmental problems due to the waste water produced. The high organic compounds contained in tofu liquid waste is evidence that COD concentrations are increasing and if discharged into waters without prior treatment it causes pollution. The so…
ABSTRACT The rapid development of the oil palm plantation industry is currently causing more and more waste to be formed, one of which is palm oil frond waste. Palm fronds have a carbon content of 81.25% which is quite high so that they can be used as activated carbon as an adsorbent which is useful for anticipating or minimizing Cu2+ ion pollution in the environment. This study aims to study …
ABSTRACT The rapid development of the oil palm plantation industry is currently causing more and more waste to be formed, one of which is palm oil frond waste. Palm fronds have a carbon content of 81.25% which is quite high so that they can be used as activated carbon as an adsorbent which is useful for anticipating or minimizing Cu2+ ion pollution in the environment. This study aims to study …
ABSTRACT The temperature of the human body can easily change according to the surrounding temperature. Indonesia's tropical climate and global warming are also other factors that make the weather unpredictable. To overcome this problem, a tool is needed to help stabilize the temperature in the human body. One of these auxiliary tools is a fan, but the fans that are widely used today are still …
ABSTRACT Microcontroller technology in industry is programmed in such a way as to be able to control equipment or machines automatically, in order to save time and human effort, for example problems in the parking system, can be controlled by technology, by designing a simple parking system using a microcontroller. Based on this, the researcher felt the need to make an automatic car parking r…
ABSTRACT Chip pin processing plays an important role in the pulping production process. Pin chip separation was carried out on the pin screen diamond roll acrowood machine which aims to separate pin chips from fines. A decrease in the performance of the diamond roll acrowood pin screen machine will reduce pulp production at PT RAPP. The purpose of this research is to study the factors influenc…