ABSTRACT The sedimentation rate in a slurry is the speed at which solid particles settle out of the liquid due to the force of gravity. A dispersant is a dispersing agent used to ensure that the particles in the GCC slurry remain stable, do not clump together, and do not settle. This study aims to determine the effect of dispersant dosage on the sedimentation rate, viscosity, and solid con…
ABSTRACT The manufacturing process of Ground Calcium Carbonate (GCC) involves wet grinding which requires a certain energy known as Specific Grinding Energy (SGE). This energy is critical in achieving the desired particle size and has a direct impact on the quality of the final product as well as the efficiency of the energy used in the process. This study aims to analyze the effect of pow…
ABSTRACT The DA stage is an important stage in the process of increasing brightness because the DA stage is a delignification stage to damage and separate the remaining lignin structure in the pulp. This study aims to determine the effect of temperature and time on brightness, fiber morphology and tensile strength. In this study, the DA bleaching process was carried out using chlorine dioxide …
ABSTRACT Mangrove forests typically grow along coastlines and play a crucial role in protecting coastal areas from sea water-induced abrasion. Rangsang Island is located in a coastal region directly facing the Malacca Strait, making it vulnerable to coastal abrasion and shoreline changes. Google Earth Engine (GEE) is a platform that facilitates research related to shoreline changes caused …
ABSTRACT This study aims to evaluate the reliability of the SPI-3 (Standardized Precipitation Index) generated by Google Earth Engine (GEE) by comparing it with manual calculations using Microsoft Excel, as well as to analyze the correlation between SPI-3 and hotspot occurrences. SPI-3 monitoring is conducted due to the high fire susceptibility of peatlands during drought conditions, highl…
ABSTRACT Unpredictable earthquakes have a major impact on structures, especially without bracing which has low strength against seismic forces. This study aims to analyze the effect of bracing on the natural frequency and dynamic response of SDOF and MDOF structures using the time history method. The dimensions of the structural system modeling refer to data from previous laboratory studie…
ABSTRACT The University of Riau campus area frequently experiences inundation during the rainy season, highlighting the need for effective and sustainable flood mitigation strategies. This study aims to model the hydraulic system of interconnected lakes within the campus area to optimize water retention capacity and reduce flood risk. Data collection included topographic, rainfall, and oth…
ABSTRACT CV. Musbar Mie is a food industry company located on Jl. Arifin Ahmad Gang Pelangi, focusing on the production of fresh noodles and raw noodles for chicken noodles, with a daily capacity of 700 kg. This study uses the Systematic Layout Planning (SLP) method to analyze the production facility layout and recommends the implementation of the 5S method to improve work productivity. The in…
ABSTRACT This research aims to measure production capacity, design facility layouts, and improve working conditions. Based on calculations, it was found that the daily production capacity of UMKM Bumbu Masak Buya can consistently reach 200 kg by following a structured work schedule. Furthermore, UMKM Bumbu Masak Buya does not yet have an organized production area layout or adequate supporting …
ABSTRACT The advancement of Internet of Things (IoT) technology enables the automation of intelligent and efficient office systems. This thesis presents the design and implementation of an IoT-based Smart Office system consisting of two main components: an electronic device control system and an RFID-based employee attendance system. The system employs ESP32 and ESP8266 microcontrollers integr…
ABSTRACT We are entering an era of energy transition, in which the use of fossil fuels is being increasingly replaced by new renewable energy sources, which are considered to be environmentally friendly and low in carbon emissions. This can be seen in the increasing number of decentralised power plants (PT), which are integrated by new renewable energy plants, one of which is the solar power p…
ABSTRACT Activated carbon is widely known as an adsorbent material in various purification applications, including in the processing of liquid smoke. This study aims to determine the effect of temperature and activation time of activated carbon calcination on purification of liquid smoke. Dry oil palm frond waste with an amount of 6 kg was carbonized using the torrefaction method producing a c…
ABSTRACT Activated carbon is widely known as an adsorbent material in various purification applications, including in the processing of liquid smoke. This study aims to determine the effect of temperature and activation time of activated carbon calcination on purification of liquid smoke. Dry oil palm frond waste with an amount of 6 kg was carbonized using the torrefaction method producing a c…
ABSTRACT Oyster mushroom baglog waste is a residual growing medium left after oyster mushroom cultivation that is no longer productive if not managed properly, it can cause enviromental problems. This study aims to determine the effect of varying Promi concentrations and composting durations on the quality of compost produced from oyster mushroom baglog waste. The method used is anaerobic deco…
ABSTRACT This study aims to empirically determine the effect of managerial entrenchment, CEO overconfidence, and accrual earnings management on audit report readability in banking companies listed on the Indonesia Stock Exchange from 2021 to 2023. The population in this study are all banking companies listed on the Indonesia Stock Exchange in 2021-2023, namely 47 companies. The sample in this …
ABSTRACT Recausticizing is a process of chemical recovery plant that is tasked with converting green liquor into white liquor as the main product and lime mud as a by-product. Lime mud is one of the by-products of recycling in the pulp industry process produced from the recausticizing process which has a high CaCO3 content so that it can be used as the main material for the calcination process…
ABSTRACT The rotogravure printing technique is a direct printing technique. Printing techniques in deep printing or rotogravure include direct printing techniques, namely printing raw materials directly in contact with the gravure cylinder as an image carrier. During the production process, there are often production defects such as printing defects. The existence of printing defects in wrappi…
Narrow Barred Spanish Mackerel (Scomberomorus commersonii) is a high economic value fishery commodity in Indonesia, but its utilization is still limited to the meat, while the bones as waste have not been optimally utilized. Fish bones contain high calcium and protein so they have the potential to be used as nutritious food ingredients, one of which is as raw material for crackers. This study a…
ABSTRACT Wastewater treatment is an important part in supporting the sustainability of pulp and paper industry operations. One of the stages used to improve wastewater quality is the coagulation-flocculation process in tertiary treatment. This study aims to evaluate and compare the performance of two types of coagulants, namely aluminum sulfate (alum) and polyaluminium chloride (PAC), which ar…
Pasar Lama Pangkalan Kerinci is the main smoked fish trading center in Pelalawan Regency, Riau. The marketed smoked fish consists of various species such as catfish, baung, and catfish originating from Kampar, Langgam, and Kerinci areas. These products are traditionally processed with limited sanitation, potentially leading to quality degradation and microbiological contamination during storage…