ABSTRACT The manufacture of ship propellers is one of the important aspects in the shipping industry. because it functions as the main propulsion of the ship in the water. The efficiency and durability of the propeller greatly affect the overall performance of the ship. Therefore, the selection of the right materials and manufacturing processes is a key factor. The methodology consists of seve…
ABSTRACT Coconut plants (Cocos nucifera L.) are multipurpose plants where all parts of the plant can be used to meet human needs. Coconuts have a strategic role in the national economy.In the process of peeling coconut skin, many still use manual methods and some also use coconut peeling machines. But there are still shortcomings in peeling young coconut skin. Therefore, a revision of the mech…
ABSTRACT Infrastructure development, high-rise buildings, bridges, highways, toll roads, housing and so on require cement mixers (Molen). For small-scale construction such as casting house floors, terraces, bathrooms, cement mixing is usually done manually (using a hoe) which requires manpower/workers and a long time and increased costs for workers' wages. The use of a 25 kg type cement mixer …
ABSTRACT Infrastructure development, high-rise buildings, bridges, highways, toll roads, housing and so on require cement mixers (Molen). For small-scale construction such as casting house floors, terraces, bathrooms, cement mixing is usually done manually (using a hoe) which requires manpower/workers and a long time and increased costs for workers' wages. The use of a 25 kg type cement mixer …
ABSTRACT Sauce is a liquid or semi-liquid processed product commonly used as a complement to various types of food. Innovation in processing papaya-based sauce offers a promising alternative in the development of functional food products. However, most small and medium enterprises (SMEs) still produce sauce manually, resulting in low efficiency, inadequate hygiene standards, and high labor cos…
ABSTRACT Sauce is a liquid or semi-liquid processed product commonly used as a complement to various types of food. Innovation in processing papaya-based sauce offers a promising alternative in the development of functional food products. However, most small and medium enterprises (SMEs) still produce sauce manually, resulting in low efficiency, inadequate hygiene standards, and high labor cos…
ABSTRACT This study aims to design and create a prototype of an automatic sliding roof utilizing a mechanism based on a rack and pinion gear, driven by a DC motor, and controlled by sensors and microcontrollers. The results of making the tool components: a fixed frame measuring 1750 mm long x 800 mm wide and 250 mm high, a sliding frame measuring 900 mm long x 800 mm wide, gear design, fiber r…
ABSTRACT The increasing amount of household organic waste requires an efficient solution in its management. One effort that can be made is to design a simple and easy-to-maintain household-scale organic waste shredder. The purpose of this design is to produce a shredder that is able to crush organic waste such as food scraps, leaves, and grass into smaller sizes so that it is easier for the co…
ABSTRACT The increasing amount of household organic waste requires an efficient solution in its management. One effort that can be made is to design a simple and easy-to-maintain household-scale organic waste shredder. The purpose of this design is to produce a shredder that is able to crush organic waste such as food scraps, leaves, and grass into smaller sizes so that it is easier for the co…
ABSTRACT Bay leaf tea is a herbal drink that has many benefits for human health as an anti-virus, anti-oxidant and can reduce symptoms of hypertension and gout. This study aims to study the effect of temperature variations and drying time in producing simple drugs and to analyze the tea content of bay leaves and compare it with the SNI standard No. 01-3143- 2011. The method used is drying …
ABSTRACT Oyster mushroom baglog waste that is not utilized properly will cause problems such as environmental pollution and can also be a source of pollution for cultivated oyster mushrooms. Making biobriquettes from mushroom baglog waste is an alternative for managing oyster mushroom baglog waste. However, the briquettes produced must also be of good quality, the quality of biobriquettes …
ABSTRACT The rapid development of industry has contributed greatly to economic growth, but has also had a negative impact on the environment, especially in the form of water pollution due to industrial wastewater. One of the common pollutants is methylene blue dye, which is widely used in the textile industry. This substance is toxic, difficult to degrade, and can cause disruption to aquatic e…
ABSTRACT The rapid development of industry has contributed greatly to economic growth, but has also had a negative impact on the environment, especially in the form of water pollution due to industrial wastewater. One of the common pollutants is methylene blue dye, which is widely used in the textile industry. This substance is toxic, difficult to degrade, and can cause disruption to aquatic e…
ABSTRACT Biomass is a fuel that can be used directly or processed first into solid, liquid or gas fuel through a certain process. Liquid smoke produced from the torrefaction process is a condensation liquid that comes from heating biomass without oxygen. The clarification of liquid smoke used as a food preservative must be carried out through a distillation and adsorption process first. The ob…
ABSTRACT Biomass is a fuel that can be used directly or processed first into solid, liquid or gas fuel through a certain process. Liquid smoke produced from the torrefaction process is a condensation liquid that comes from heating biomass without oxygen. The clarification of liquid smoke used as a food preservative must be carried out through a distillation and adsorption process first. The ob…
ABSTRACT Salicylic acid has the chemical structure C7H6O3, is crystalline, white in color, has a sweet taste and is stable in free air. Salicylic acid and its derivatives are chemicals that are quite important in daily use. In the pharmaceutical field, salicylic acid is used as an analgesic, antipyretic, antioxidant, antimicrobial, antiproliferative and cytotoxic agent. In the field of cosmeti…
ABSTRACT The issue of heavy metal contamination in industrial wastewater, particularly ferrous ions (Fe²⁺), poses a serious threat to the environment and human health. One effective and eco-friendly solution is the adsorption method using biomass-based adsorbents. Coffee grounds, an organic waste rich in lignocellulose, show great potential as a raw material for biomass adsorbents. Chemical…
ABSTRACT The issue of heavy metal contamination in industrial wastewater, particularly ferrous ions (Fe²⁺), poses a serious threat to the environment and human health. One effective and eco-friendly solution is the adsorption method using biomass-based adsorbents. Coffee grounds, an organic waste rich in lignocellulose, show great potential as a raw material for biomass adsorbents. Chemical…
ABSTRACT Sodium Silicate is a raw material that is widely used as a filler in the detergent, soap and toothpaste industries. Sodium silicate can be synthesized from silica (SiO2), which can be obtained through an extraction process from materials containing silica such as sand, clear glass bottle waste and fly ash. In this study, the synthesis of sodium silicate was carried out using silic…
ABSTRACT The ripple mill mechine is a tool for breaking and separating palm kernels from their shells, in this mechine there is a rotor part that rotates on the ripple plate, the stationary part, the seeds enter between the rotor and the ripple plate so that they collide and break the shell from the core. The risk that is often experienced by the ripple mill machine is the occurrence of fallin…