ABSTRACT Spray drying is an effective method to convert liquid coconut milk into powder; however, conventional cyclone separators still face challenges in particle separation efficiency due to re-entrainment phenomena. This study aims to design and analyze the performance of a cyclone separator modified with a Circumfluent Cyclone (CFC) configuration and the addition of a Convergent Vortex Fin…
ABSTRACT Spray drying is a widely used drying method to convert liquid feed into powder, especially for heat-sensitive materials such as coconut milk. However, this process often encounters the issue of wall deposition, where particles adhere to the drying chamber walls, reducing drying efficiency and product quality. This study aims to analyze the temperature and airflow velocity distribution…
ABSTRACT Implementation of development on a project scale has great potential for environmental damage to occur. The building and construction sector contributed approximately 32% of global energy consumption and 34% of energy-related carbon dioxide (CO2) emissions in 2023. There has been an increase in the average daily temperature of at least 0.74ºC per year over the past two decades with t…
ABSTRACT Oyster mushroom baglog waste can produce 1 to 2 tons of waste in one harvest cycle. This waste has a fairly high lignocellulose content so that it has the potential to be used as a basic material for making activated carbon. This study aims to determine the effect of variations in NaOH activation concentration on the adsorption capacity of activated carbon from baglog waste in rem…
ABSTRACT Home cleaning service is a cleaning service that can be ordered online through a mobile application. This service offers a variety of options at different price levels, depending on the type and scope of service requested. The main purpose is to assist families or individuals with busy routines who lack the time to clean or regularly maintain their homes, especially vacant houses, to …
ABSTRACT The advancement of information technology has driven digital transformation across various sectors, including the culinary industry. Rajo Coffee, a growing coffee shop in Pekanbaru, faces operational challenges due to its reliance on manual systems for transactions, inventory management, and financial reporting. These issues include long queues during peak hours, transaction recording…
ABSTRACT EMP Bentu Ltd – EMP Korinci Baru Ltd is an entity engaged in the energy sector, particularly in natural gas, and is currently carrying out various important projects on-site. In monitoring the progress of these projects, the company still relies on WhatsApp and email, which leads to difficulties in tracking progress, risks of miscommunication, and scattered documentation. This resea…
ABSTRCT Population growth and transportation energy needs in Indonesia continue to increase, while the use of fossil fuel vehicles exacerbates pollution and relies on non-renewable resources. Electric cars are an environmentally friendly solution because they do not produce exhaust emissions. PWM is the process of comparing a carrier signal and a modulation signal to produce a square signa…
ABSTRACT This study analyzes the performance of the Shinobi Video NVR server based on Raspberry Pi and Docker PC in managing IP CCTV video using parameters such as bitrate, latency, jitter, packet loss, CPU and RAM usage, system temperature, network connection status, and storage usage. The results show that the Docker PC delivers more stable and efficient performance compared to the Raspberry…
ABSTRACT Dispersion power fading is one of the main problems in fiber optic communication systems, especially in long-distance transmission with high data rates. This phenomenon is caused by chromatic dispersion which causes a phase shift between signal spectra, resulting in signal power degradation and transmission quality. One effective solution to overcome this problem is the use of Dispers…
ABSTRACT Vinyl chloride is generally produced as a material for making polymers, especially polyvinyl chloride (PVC). The aim of establishing a vinyl chloride factory is to increase domestic production capacity and build Indonesia's ability to become an exporter. Vinyl chloride is produced through a direct chlorination process with the main raw materials being ethylene and chlorine. This proce…
ABSTRACT The surfactant industry in Indonesia is still very limited, even though its use is increasing. According to data from the Chemistry Center of the Indonesian Institute of Sciences (LIPI), Indonesia needs around 95 thousand tons of surfactants per year while domestic production capacity is only around 55 thousand tons per year so that as much as 44 thousand tons of surfactants are still…
ABSTRACT The preliminary design of a diisopropyl ether plant with a fixed bed reactor as the main equipment has a production capacity of 56,000 tons per year. The raw materials used in this plant design are acetone (C₃H₆O) and hydrogen (H₂). The production process of diisopropyl ether involves hydrogenation and etherification. The preparation of raw materials begins by adjusting the …
ABSTRACT Vinyl chloride monomer (VCM) is a primary raw material in the production of polyvinyl chloride (PVC), widely used across various sectors such as automotive, construction, and household applications. The demand for VCM in Indonesia continues to rise annually, yet a significant portion is still met through imports. To reduce import dependence and support domestic industrial growth, a vi…
ABSTRACT 1,3 Butadiene has the chemical formula C₄H₆ and the structural formula CH₂=CH-CH=CH₂. It is a conjugated diene compound, also known as buta-1,3-diene, biethylene, erythrene, and vinylethylene. 1,3 Butadiene is a colorless, non-corrosive, highly flammable, and reactive compound with a distinctive light gasoline-like aroma. It is widely used in the chemical industry, particularl…
ABSTRACT Acrylonitrile is a clear, colorless liquid with a slightly pungent odor. It is used as a chemical intermediate in the production of acrylic fibers, plastics, synthetic rubber, and numerous other products. The fluidized bed manufacturing process for acrylonitrile was developed by scientists at The Standard Oil Company (SOHIO). To meet the demand for acrylonitrile, a production plant wi…
ABSTRACT Erosion and sedimentation can reduce the capacity of waterways, so to overcome the problem of sedimentation in irrigation canals, a mud interceptor building is needed. Therefore, in this research, a sandtrap dimension planning is planned. This research aims to design an effective and efficient santrap design in accordance with the existing conditions in the Sei Tibun Dam irrigation ne…
ABSTRACT This study aims to analyze the productivity of heavy equipment in embankment and granular pavement work on Jalan Kampus Universitas Riau. In the construction of road infrastructure, the efficiency and effectiveness of heavy equipment use greatly affect the implementation time and cost of the project. This study compares two alternatives for the use of heavy equipment: the equipment us…
ABSTRACT Excessive use of groundwater will have an impact on reducing groundwater levels. To overcome this, implementing environmentally friendly drainage is one solution to prevent shallowing of groundwater levels. At Annajim Housing, changes in land use will increase surface runoff and reduce water infiltration into the ground, thereby potentially causing flooding and decreasing environmenta…
ABSTRACT Lemang is a traditional Indonesian food cooked by roasting glutinous rice in bamboo over an open fire. The manual roasting process requires a long duration and constant attention to ensure even cooking, often resulting in inefficiencies and uneven doneness. To address these issues, a closed-type rotary lemang roasting machine was designed and developed in this final project. The aim o…