Carbon electrodes derived from palm leaf midrib biomass have the potential to be used as supercapacitor carbon electrodes. Supercapacitor electrodes from palm leaf midrib biomass were made through pre-carbonization process, chemical activation using a potassium hydroxide activator with a concentration of 1 M, then the carbonization process with variations in carbonization temperature of 650…
One of the geothermal systems in Riau is in Pawan Village, Rokan Hulu District. The geothermal system is stored in rocks beneath the earth's surface, so it is necessary to identify the subsurface lithology. The purpose of this study is to analyze the subsurface resistivity value and identify the lithology of rock layers in the Pawan Hot Spring Tourist attraction. The method used is Geoelect…
The existence of aquifer layer and water quality tests in Rimba Panjang, Kampar have been explored using geoelectric resistivity method with Wenner configuration and hydrogeochemical method. Geoelectrical method is one of geophysical methods to understand geological condition subsurface based on resistivity value of rock types. Hydrogeochemical method is a method for studying the chemical …
Geothermal is a natural resource that provides benefits to humans, hydrothermal are one of it. Identification to explore the existence of hydrothermal distribution, can using the geoelectric resistivity method of the Wenner configuration in the vicinity of Pawan Village, Rokan Hulu Regency, Riau Province which is located at coordinates 0°50'20" north latitude and 100°15'19" east longitude…
Methylene Blue is one of the synthetic dyes which is widely used in textile industry. Methylene Blue from textile industry produces a negative impact on health and the environment such as water contamination, therefore necessary to remove the methylne blue from contaminated water. The application of magnetite (Fe3O4) particles for degradation of Methylene Blue has been explored . The concentrat…
The decline in the quality of aquatic resources due to pollution from agricultural and industrial activities has become a particular concern in recent years. For this reason, prevention efforts are made by observing the determinants of water quality, one of which is the level of dissolved oxygen (DO). DO levels were detected using a biosensor module integrated with a microchip, namely the type …
This study aims to synthesize and characterize Gold Nanobipyramids (GNBPs) and to analyze their potential application to plasmonic sensors. Synthesis of GNBPs uses the Seed Mediated Growth Method (SMGM). GNBPs were characterized using Spectroscopy UV-Vis, X-Ray Difraction (XRD) and Field Emission Scanning Electron Microscope (FESEM) to determine their optical properties, crystaline and mor…
Research has been done in the area of Bukit Raya Subdistrict which aims to determine the potential for groundwater and underground lithology, determine the permeability of the soil layer, and determine the quality of well water and trench water around the research trajectory. The method used in this research is the geoelectric resistivity method of the Wenner Configuration by taking 2 lines…
Peat water is surface water which is often found in peatland or lowland areas, especially on the islands of Borneo and Sumatra. An analysis of the quality of peat water has been carried out using the slow sand filtering method around the Uin Suska Riau Campus in Pekanbaru City. Test samples were taken at 10 different points. Outputs from measurements are conductivity, pH and TDS, Fe and Mn valu…
This research of Underground Water and Hydrogeochemistry has been done sorrounding the Street Matoa Raya West Sidomulyo, Tampan District using the Geoelectric Method Schlumberger Configuration and water quality test at UPT Health and Environment Laboratory of Riau Province. This researchs was aimed to identify the subsurface lithology based on resistivity values of rocks in the research ar…
This search has been done manufacture and characterization of silver nanoparticles using red dragon skin extract as a methylene blue degradation. This research was aims to synthesize nanoparticles using red dragon fruit peel extract characterized using a UV-Vis spectrophotometer and characterization using TEM and determining the degradation activity of methylene blue which was tested absor…
This research was carried out to synthesize and functionalize amine to gold nanobipyramids it’s aims to increase the stability of the gold nanobipyramids properties. The gold nanobipyramids (GNBPs) have been successfully synthesized by seed mediated growth method. using growth solution which consists of 0.875 mL HAuCl4 0,01 M, 0.025 mL H2PtCl4 0,01 M, 20 mL CTAB 0,1 M, 0.2 mL AgNO3 0.01 …
Determination of size and composition variation of natural sand of Rokan river in Riau province have been done. Natural sand samples of Rokan river were collected from 5 points with each point 500 meters apart and a mass of 10 kg per point. Samples were dried under the sun before the separation between magnetic and non-magnetic particles using an Iron Sand Separator. The results of the sep…
Marpoyan Damai sub-district has the potential as a secondary crops agricultural land. However farmers in the area have difficulties in getting water in dry season for their farming activities. Because of this, study on potential ground water location in the area is very important. This study was aimed to identify the depth of the subsurface structures around the agricultural area. The data …
Magnetic properties and morphology of natural sand has been determined. The natural sand was collected from Logas Village, Kuantan Singingi Regency. Magnetic and non magnetic particles of the samples were separated using Iron Sand Separator (ISS) prior to ball milling process. The product of ISS was then milled for 90 hours with the milling ball diameter of 1.5 cm. The second step of milli…
The synthesis of activated carbon derived from avocado seed biomass waste (Persea americana mill) for supercapacitor electrodes have been performed through three different physical activation temperature. Preparation of activated carbon electrodes begins with a pre-carbonization process. Next, the samples were chemically activated with 0.1 M potassium hydroxide. The pyrolysis process was s…
Cancer is one of the leading causes of death in the world. One type of cancer is oral cancer, which is difficult to diagnose at an early stage so that it is fatal and can cause death. This study aims to synthesize and characterize gold nanorods and to analyze the potential applications of gold nanorods in the treatment of oral cancer cells. The method used to synthesize gold nanorods is the…
Activated carbon is an ideal material for supercapacitor electrodes. This is due to abundant, renewable, and cost-effective production. In this work,activated carbon monolith materials through carbonizing bamboo stems wastes and treating them with ZnCl2 in high-temperature pyrolysis as binder-free electrode of supercapacitor application have been developed. ZnCl2 impregnation was carried o…
Maharatu Village, Marpoyan Damai District in Pekanbaru City is known for its secondary crops agricultural activities. These activities can cause groundwater pollution or contamination due to excessive use of fertilizers. This study was aimed to determine the water qualities in surrounding area of Maharatu Village. The parameters measured were pH, COD, BOD and TDS value, Coli bacteria conten…
Determination of magnetic and morphological properties of sand from Kata Pariaman Beach, West Sumatera have been carried out using a Pasco Magnetic Probe and Scanning Electron Microscope test. The sand sample was dried first and then separated using Iron Sand Separator, before the crushing using Ball Milling 2 steps. The first step of Ball Milling was carried out for 40 hours with milling ball …