Indonesian Government regulation No.5 in 2006, consumption of fossil fuel will be reduced from 52% (2015) to 20% (2025). The Government expects alternative energy can replace the fossil fuel. Galvanic cell is one of the alternative energy sources that can be developed to reduce dependence on fuel. Gavani cell can convert a chemical reaction into an electrical energy. In this research, power gen…
Crisis Fuel, which swept the world as a result of the high demand for oil and depleting oil reserves, this is the case also in Indonesia. Portable Power Plant Unit is one alternative that is very useful to generate energy for the people of Indonesia. The purpose of this research was to generate electrical energy using variations of the amount of AZ91 Magnesium plate on the performance of portab…
Durian (Durio zibethinus Murr) is one of plantation crops which has long been known by the public and used generally fruit only. Many people consume durian so produce waste in the form of durian seed and durian skin. This research aims to utilize waste durian seeds into starch and analyzed nutritional and organoleptic. In this study, the first process is drying durian seeds to dry. Further stri…
Soap is made with a cleaning chemical reaction between sodium or potassium bases with fatty acids from vegetable oils or animal fats. The main component of soap-making consist of a chain fatty acid C12 – C18 and sodium salts. Transparent soap is soap that has the highest level of transparency, emits light the spreads in the form of small particles, so that objects which are outside the soap w…
Stove gasification technology is the use of biomass as a fuel to convert it into a combustible gas which is subsequently converted into heat energy. Gasification is a technology-intensive conversion process materials into combustible gas. This study aimed to compare the rate of traditional fuel burning stove with stove gasification and analysis of the economic costs in the small industry. The r…
Corrosion is a metal reduction due to a chemical reaction of a metal with its environment. One way to reduce the rate of corrosion is by the addition of the inhibitor. The mangosteen rind contains tannins that can be used as an inhibitor. This research aims to know the value of the rate of metal corrosion inhibitor skin extracts using mangosteen. Sokletasi is used to extract tannin from the bar…
One result of waste or waste from processing whey tofu is the rest of the water out or clumping know. Whey tofu still contain some organic ingredients, one of which is the protein from soya. Through a simple biotechnological process whey tofu that still contains some nutrients and having acidic conditions, can be used to produce nata. Nata produced from whey media know called nata de soya. The …
Trash brings bad impact on the environment and human health .When carelessly discarded trash without proper management, it will cause serious negative impacts. It is necessary for management efforts in waste management, especially organic waste. One effort is the handling of organic waste with an organic liquid fertilizer. The purpose of this study is the use of microorganisms as a source of lo…
The pulp industry generally uses wood as raw material for pulp making. The limited number of wood raw materials causes a raw material crisis. Indonesia is a rich country of agricultural and plantation products, one of which is pineapple leaves. Pineapple leaves contain 71.5% cellulose content that can be used for pulp making. This research uses semi mechanical soda method. The fixed variable of…
Palm oil waste is the residual yield of empty palm oil plants not included in the main product or the result of the process of palm oil processing. Solid palm oil waste can be empty bunches of palm oil and palm kernel shells. For palm kernel shells can be used as carbon / activated charcoal, making liquid fertilizer of sulfate and fuel (biomass), briquettes. In palm oil bunches can be used as P…
Used paper is a waste material that can be recycled. One of the contents of used paper is cellulose that can be converted to glucose with hydrolysis process. The aim of this study are to determine the effect of hydrochloric acid concentration and hydrolysis time, then to calculate the amount of feed yield of glucose produced. Hydrolysis process using hydrochloric acid (HCl) as a catalyst which …
Peat water is the surface water of peat soil with a very striking characteristic because it is brownish red color, contains high organic matter and high enough iron, acid taste with pH 3-5 and low level of hardness. Peat water has potential as supply of nutrients in microalgae cultivation. Some microalgae growth factors are light intensity, CO2 and nutrients. The purpose of this study is to det…
Peat water is the surface water of peat soil with a very striking characteristic because it is brownish red color, contains high organic matter and high enough iron, acid taste with pH 3-5 and low level of hardness. Peat water has potential as supply of nutrients in microalgae cultivation. Some microalgae growth factors are light intensity, CO2 and nutrients. The purpose of this study is to det…
Galvani cells are one of the alternative energy sources that can convert chemical reaction into electrical energy. The purpose of this research is to utilize electronics scraps (Cannon ip 1680) for electrochemical cells by using variation of lime juice concentration (ie 1%, 3%, 5%, 7%, and 9%) with electrode pair (1 to 8 pairs). In this study, the power generating unit consists of circuit print…
Peat soil is an organic material that is formed from organic materials, peat soil has several macro nutrient content (N, P, K, Ca, Mg, Carbon (C)) and micro (Cu, Fe, Mn, Zn) (nutrient) . Microalgae are micro-sized plant groups, both single cells and colonies that live in all areas of freshwater and marine waters. Nutritional factors are one of the important factors that need to be considered in…
Peat soil is an organic material that is formed from organic materials, peat soil has several macro nutrient content (N, P, K, Ca, Mg, Carbon (C)) and micro (Cu, Fe, Mn, Zn) (nutrient) . Microalgae are micro-sized plant groups, both single cells and colonies that live in all areas of freshwater and marine waters. Nutritional factors are one of the important factors that need to be considered in…
Bromelien is one of the sulfihydryl protease enzymes obtained through the isolation process of bromelien enzymes capable of hydrolyzing the peptide bonds of proteins or polypeptides into smaller molecules of amino acids. This study aims to extract the enzyme bromelien from pineapple cobs and determine the activity of bromelien enzyme. The crude extract of bromelien enzyme was obtained by precip…
Currently, the siak water has yellows colour, smells, contains organic substances and acidic pH. People who live in the stream areas along the siak river using the water directly. They used it for bathing, washing without processing it in advance. In this research, the water was treated by using coagulation, floccculation, sedimentation and filtration processes. The purpose of this research was…
Biomass is an interesting source of energy to developed since its abundance and renewable properties. One of the sources of biomass is used paper. It can be utilized into glucose by hydrolysis process because it has holocelluloses. The aim of this study was to convert the used paper to glucose by using hydrolysis process with employed sulphuric acid as a catalyst, to determine the effect of sul…
Biodiesel is an alternative fuel that is similar to diesel. Previously many biodiesel developed using raw materials of vegetable oil, but for raw materials using animal fat is still not widely developed. One of animal fat that can be used as raw material for making biodiesel is chicken fat. In this study chicken fat will pass through the hydrolysis stage before transesterification into biodiese…