This research aims to determine the improvement of students ' learning achievement in the application of the Learning Discovery Learning model on the subject of ion equilibrium and pH of class salt solution XI SMA Negeri 10 Pekanbaru. This type of research is experimental research with draft research using the Randomized Control Group Pretest-Posttest Design. The population consists of 4 classe…
This research aims to develop an integrated STEM (Science, Technology, Engineering, and Mathematics) module on ionic equilibrium and pH of salt solutions materials for second grade Senior High School. STEM integrated learning is one of the learning methods that aims to improve the four competencies that students must have in the 21st century. The research design is a development research w…
Pyrazoline is known as a heterocyclic compound that has various biological activities such as antioxidant, antibacterial, antifungal, antimalarial, and anticancer. Pyrazoline is a five-ring heterocyclic compound with three carbon atoms and two adjacent nitrogen atoms. The various bioactivities of pyrazoline were caused by the presence of heteroatom. Pyrazoline analog, 5-(3- fluorophenyl)-3…
Pyrazoline is five ring heterocyclic compound with two nitogen atoms in adjacent position. These compound have diverse biological activities such as antimicrobial, antiinflammatory, antituberculosis, antimalarial and anticancer. This research was conducted to synthesize 5-(3-fluorophenyl)-3-(naphtalene-2-yl)-1-phenyl-4,5-dihydro-pyrazol (PF CN2-3F) using a one-pot three component reaction of …
ABSTRACT Oil Palm Empty Fruit Bunches (OPEFB) are biomaterials that have potential to be developed as a raw material for mushroom cultivation. Spent mushroom substrate, a renewable bio-waste from mushroom-growing industry, was used as a biosorbent to remove ion Fe metal and color in peat water. The purpose of this study was to determine metal removal efficiency of Fe and color in the peat …
ABSTRACT Pekanbaru City as the capital city of Riau Province has a high rate of growth, migration and urbanization. The increase in population in the city of Pekanbaru is very rapid, especially in development area V (WP V). The increase in population was followed by an increase in the number of vehicles as a transportation so it can directlyaffect the amount of CO2 emissions generated from…
ABSTRACT Peatlands are one type of wetland ecosystem. Indonesia's peat land area is about 14.95 million hectares spread across the island of Sumatra, Kalimantan. Microalgae are photosynthetic microorganisms capable of converting sunlight, water and carbon dioxide into biomass. In microalgae biomass contains beneficial essential ingredients, such as proteins, carbohydrates, lipids and nucl…
ABSTRACT The enhancement in the use of fossil energy sources causes energy sources to run low so it must be balanced with the supply of alternative energy that can be renewed. Palm oil mill sludge has high organic matter content but has not been utilized optimally. WWTP sludge in palm oil production with the addition of empty fruit bunch can be used as raw material for making briquettes th…
ABSTRACT Energy needs at this time still depend on fossil fuels that can not be renewed, therefore we need alternative fuels that are renewable, environmentally friendly and economical, one of which is briquettes. Palm empty fruit bunches and palm oil mill sludge can be utilized as raw material for making briquettes. In this study Oil Palm Empty Fruit Bunches were carbonated at 450 ° C fo…
ABSTRACT The problem of PET (Polyethylene Terephthalate) plastic bottles is currently a product that is recommended only for single use, then disposed of in the environment so that PET waste is very vulnerable to buildup and disturb the environmental ecosystem. This study aims to recycle PET waste into a mixture in the manufacture of ecological bricks (brick) so that it can minimize PET wa…
ABSTRACT The country of Indonesia is currently published as the second largest contributor of plastic waste in the world, amounting to 28.4 thousand tons of plastic waste / day. Plastic has caused problems in the environment and become waste that is difficult to be reprocessed. Ecobricks (environmentally friendly brick) are made from plastic waste so that it can reduce environmental pollut…
ABSTRACT Metal Cr (VI) is a metal found in high concentrations of liquid waste electroplating, so it is toxic can cause acute and chronic poisoning. Using fungi biomass become an alternative to solving environment pollution problems caused by heavy metals. The research purposed to learn the ability of C. comatus fungi biosorbent to set aside the metal Cr (VI) through the process of biosorb…
ABSTRACT Empty fruit bunch and WWTP mud palm oil production is a source biomass energy which has not been utilized optimally yet. This study aims determine the effect of differences in the compotition of raw materials and the addition of crude glycerol adhesive to the quality of briquettes produced using the carbonization process. The proses of making briquettes in this study with variying…
ABSTRACT Organic matter contained in the hotel wastewater can be utilized by microalgae Chlorella sp. as a source of nutrition for its growth so its reduce COD and total nitrogen levels. One of the wastewater treatment processes that can increase the growth of microalgae is the Moving Bed Biofilm Reactor (MBBR). MBBR in principly is suspended growth that is increased by adding biocarriers …
ABSTRACT Oil Palm frond extract is a potential waste as a source of bioethanol formation substrate because of the simple sugar composition. Use Saccharomyces cerevisiae in the production of bioethanol has the advantage because Saccharomyces cerevisiae is the best microbe for bioethanol fermentation. Fermentation type is determined by several factors, one of which acidity (pH). Certain pH r…
ABSTRACT Tembilahan coal-fired power plant operation produces emissions that one of the parameters is SO2 and NO2. SO2 and NO2 emissions can have an impact on the environment and health. In addition to measuring the concentration of pollutants directly in the field, one way to find out the specific distribution of SO2 and NO2 pollutants can be done using AERMOD View software. The purpose o…
ABSTRACT One innovation in making biodiesel is from microalgae. The use of microalgae as a source of raw materials for biodiesel production requires biomass and high lipid content. The lipid content of microalgae can be converted into biodiesel. The purpose of this study is to look at the effect of the addition of micronutrients on the growth rate and lipid content of indigenous microalgae…
ABSTRACT Hotel wastewater contains pollutants such as BOD, COD and Total Nitrogen if discharged directly the environment has a harmful effect on the environment. If not processed it will cause excessive growth of algae or aquatic plants (eutrophication). The study was conducted to determine the efficiency of waste treatment hotel in reducing the parameter of COD and Total Nitrogen using th…
ABSTRACT Magnetic biochar is rich carbon solid from biomass with the addition of magnetic and pyrolysis properties. It has a potential application as adsorbent. The purpose of this research is to synthesize magnetic biochar from palm kernell shells and to study the effect of magnetic biochar dosage and contact time on removal of color, organic substances, and Fe in peat water. Magnetic bio…
ABSTRACT The generation data, composition and characteristics of waste are needed in planning the potential for waste recycling. This research was conducted in the Development Areas II and III Pekanbaru City with a total sample of 41 and 43 samples. The study was conducted based on SNI 19-3964-1994 for eight consecutive days. Average waste generation in Development Region II is (0,747 l/or…