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…
This study aims to determine the effect of tilapia bone meal fortification on the quality of crispy brownies and to determine the concentration of tilapia bone meal on the quality of cispy brownies. The method used in this research is an experiment with anon-factorial completerandomized design with fourtreatment levels, namely without tilapia bone meal fortification 0% (B0), tilapia bone meal f…
This study analyzed the productivity and business feasibility of folding bubu capture fisheries in Patam Lestari Village, Batam. Data were obtained through surveys and interviews with fishermen related to the number of catches, operational costs, and productivity factors. The results showed that the highest productivity per trip reached 7 kg, while the efficiency per gear was higher for fisherm…
This study aims to assess the level of satisfaction among fishermen regarding port authority services at the Nizam Zachman Oceanic Fishing Port (PPS Nizam Zachman) in Jakarta. As Indonesia’s largest oceanic fishing port, PPS Nizam Zachman plays a crucial role in supporting national capture fisheries activities, particularly for tuna fishermen. A survey method was employed, collecting primary…
This study assesses the pollution load capacity of the Tapung Kiri River, Kampar Regency, Riau Province, Indonesia, using the QUAL2Kw model to evaluate its ability to assimilate organic and inorganic pollutants under anthropogenic pressures. The study was conducted along a 29 km river stretch from Petapahan village (upstream) to Bencah Kelubi (downstream). Field data collected from three sampli…
Mass transportation plays an important role in community mobility in Indonesia. Therefore, predicting the level of use of mass transportation is crucial in planning and policy making. This study aims to forecast the number of mass transportation users in Indonesia using the Autoregressive Integrated Moving Average (ARIMA) method. The results of this study show that the ARIMA (1,1,0) model on ai…
Rainfall is a crucial element in meteorology that plays a significant role in various sectors such as agriculture, disaster mitigation, and spatial planning. At BMKG Sultan Syarif Kasim II Meteorological Station in Pekanbaru, the previous rainfall data visualization process was still conducted manually using QGIS software, which was relatively inefficient. This final project aims to develop a w…
Lubuk Larangan is a local wisdom that serves as an effort to conserve fish resources and aquatic ecosystems. Management of natural resources and the environment based on local wisdom such as Lubuk Larangan Padang Sawah Village. This research aims to determine the existing conditions and the condition of the Subayang River in Padang Sawah Village. This research was conducted in May-June 2024 in …
This study aims to see the types and content of microplastics in water and marine sediments in the Apar Beach area of Pariaman City. This study was conducted in February-March 2025 in the Apar Beach area of Pariaman City, West Sumatra Province. This study used a survey method and direct sampling to the research location using 3 sampling stations with 3 repetitions within a period of every 1 wee…
Quality feed is one factor affecting the growth and survival of Asian redtail catfish (Hemibagrus nemurus) larvae. Fish oil from pangasius catfish mesenteric fat waste can be commercial feed enrichment material. However, the high-fat content makes fish oil susceptible to oxidation. BHT emerged as an antioxidant added to fish feed to limit pangasius catfish oil autoxidation. This study aimed to …
Ikan bawal air tawar (Colossoma macropomum) merupakan komoditas perikanan air tawar yang bernilai ekonomis tinggi, namun kualitas air dalam budidaya sering menjadi kendala. Pemanfaatan biofilter alami seperti kijing Taiwan (Anodonta woodiana) dalam sistem polikultur diharapkan dapat memperbaiki kualitas air dan meningkatkan performa pertumbuhan ikan. Penelitian ini bertujuan untuk mengevaluasi …