ABSTRACT The reliability of the distribution system is a key factor in ensuring a stable supply of electricity to customers. A reliable electricity distribution system has the ability to avoid or minimize power outages, and is able to quickly restore power supply in situations of blackouts. In order to measure and analyze the level of reliability of the electricity distribution system, the met…
ABSTRACT The effluent treatment process at PT RAPP is divided into two treatment steps, which are primary treatment and secondary treatment. This process is basically an aerobic process, which converts organic carbon dioxide into CO2 and H2O, NH4 and new biomass cells. Oxygen is supply by mechanical blowing of air. The most general and extensive wastewater treatment system is the activated slu…
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 Peat water has special characteristics, namely brownish color, high organic matter, low pH between 2-5, so it needs to be processed so that it can be used for daily needs. Treatment that can be used is coagulation-flocculation. The coagulants used in this study were cowpea and PAC. The purpose of this study was to determine the efficiency of using cowpea for removal of organic mat…
ABSTRACT Research on river water treatment has been carried out using the coagulation-flocculation method by using of natural coagulants. Soybeans can be used as natural coagulants because they contain protein, and the results obtained will be compared with PAC coagulants. The purpose of this study was to determine the efficiency of using soybeans for turbidity and TDS removal in river water, …
ABSTRACT Oil consumption has increased every year in line with the increase in motorized vehicles. This resulted in the amount of used oil produced also increased. Used oil is included in the waste of Hazardous and Toxic Materials which have a bad impact on the environment. One of the technologies that can be utilized in processing used oil is refining because used oil contains base oil so…
ABSTRACT Cadmium (Cd) is a heavy metal that is found in many aquatic environments and has a high level of toxicity. The adsorption method can be used as an alternative in removing the metal. One of the adsorbents that can be used to remove Cd metal is magnetic biochar made from palm fronds. Palm fronds have the potential to be used as a base material for magnetic biochar because they contain c…
ABSTRACT Microplastics are generally defined as synthetic polymers that are under 5 mm in size. Microplastics that accumulate in water will have a negative impact on aquatic ecosystems. This study aims to analyze the abundance and types of microplastics in water and digestive organs in the Tangkerang River, Pekanbaru. The Tangkerang River is a tributary that will empty into the Sail and Siak R…
ABSTRACT Environmental regulatory agencys use dispersion modeling to integrate scientific understanding of pollutant emissions with regulatory requirements of environmental and health standards. AERMOD is one of the most advanced multiple source models presently being developed by the US-EPA and the AMS (American Meteorology Society). The AERMOD modeling validation findings indicate a strong c…
ABSTRACT Used oil is a material that is widely used by motorized vehicles, so that lubricating oil or oil becomes waste generated from motorized vehicles. The use of used oil waste is an environmentally friendly and renewable alternative fuel. Utilization of used lubricating oil will overcome the problem of waste from used lubricating oil which cannot be reprocessed and simply thrown away, and…
ABSTRACT Used oil waste has become one of the environmental issues that needs to be swiftly and accurately addressed. Used oil contains considerable energy and still holds potential as an alternative fuel for diesel engines. One of the methods for processing used oil involves the acid and clay technique. This study focuses on purification using the acid and clay method, with variations in zeol…
ABSTRACT The growth of the population leads to an increase in population mobility and the number of vehicles. The rise in motorized transportation results in an increasing demand for motor vehicle lubricating oil. The increased need for oil is directly proportional to the waste produced, namely used oil. One of the technologies that can be utilized in processing used oil is purification, as it…
ABSTRACT Microplastics are generally defined as synthetic polymers that are under 5 mm in size. Microplastics that accumulate in water will have a negative impact on aquatic ecosystems. This study aims to analyze the abundance and types of microplastics in water and digestive organs in the Sail River, Pekanbaru. The Sail River is a tributary that will empty into the Siak River. High activity a…
ABSTRACT The growth of the population in Pekanbaru city each year has led to an increase in the number of motor vehicles, resulting in a rise in noise intensity. The aim of this research is to measure and map the noise level during peak hours at the intersection of Kaharuddin Nasution Street and Soekarno Hatta Street in Pekanbaru city, analyze the relationship between the number of vehicles an…
ABSTRACT Peat water has a brownish red color because it contains high organic matter. Adsorption using zeolite as an adsorbent is one of the peat water treatment methods. POBA (Palm Oil Bottom Ash) is a solid waste from the disposal of oil palm boilers. POBA has a high silica content which can be used as a base for zeolite manufacture. The use of POBA as a low-cost adsorbent is one of the solu…
ABSTRACT Domestic wastewater has become an important issue that arises in line with the increasing human population. Domestic wastewater contains high organic matter, so it can reduce water quality if it is directly discharged into water bodies. According to the Indonesian Ministry of Environment in 2014 around 60-70% of rivers in Indonesia have been polluted by domestic wastewater. For this r…
ABSTRACT Dimethyl carbonate (DMC) is a compound that exhibits versatile reactivity and is widely used in chemical transformation reactions such as methylation, carbonylation, and methoxycarbonylation. Dimethyl carbonate (DMC) is also considered one of the alternative additive substances capable of replacing conventional additives due to its environmentally friendly nature compared to other add…
ABSTRACT Trisodium phospate is a product needed in the industrial, medical, and household world. Trisodium phospate is the most complex compound and commercial products generally vary in composition and often contain excess sodium hydroxide. Trisodium phospate is a strong base, most uses of trisodium phospate depend on its own characteristics. For example, many heavy cleaners contain trisodium…
ABSTRACT The polymer industry produces various types of plastic products, synthetic rubber, synthetic fibers and so on. In the process of making polymers, besides requiring resin as the main raw material, it also requires plasticizers as additional materials. Plasticizers are materials added to resin to make it soft and easy to shape. Dimethyl phthalate is one type of plasticizer used. Dimethy…
ABSTRACT Styrene (C6H5CH=CH2) is the simplest aromatic monomer and is a petrochemical product that is widely used to make synthetic rubber and plastics. Styrene is known commercially as styrene monomer (SM), styrene is produced in large quantities for polymerization. In this design, a styrene plant will be built with a capacity of 50,000 tons/year in the industrial area of Dumai City, Riau. S…